// Original C++ solution (slower):
//#pragma GCC optimize("Ofast")

#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>

#include <ext/pb_ds/tree_policy.hpp>

using namespace std;

using namespace std::chrono;

#define int long long

#define ll long long

auto start_time = system_clock::now();



//@formatter:off

#ifdef _DEBUG

//区間削除は出来ない

template<class T> struct my_pbds_tree {    set<T> s;    auto begin() { return s.begin(); }    auto end() { return s.end(); }    auto rbegin() { return s.rbegin(); }    auto rend() { return s.rend(); }    auto empty() { return s.empty(); }    auto size() { return s.size(); }    void clear() { s.clear(); }    template<class U> void insert(U v) { s.insert(v); }template<class U> void operator+=(U v) { insert(v); }    template<class F> auto erase(F v) { return s.erase(v); }    template<class U> auto find(U v) { return s.find(v); }    template<class U> auto lower_bound(U v) { return s.lower_bound(v); }    template<class U> auto upper_bound(U v) { return s.upper_bound(v); }    auto find_by_order(ll k) {        auto it = s.begin();        for (ll i = 0; i < k; i++)it++;        return it;    }    auto order_of_key(ll v) {        auto it = s.begin();        ll i=0;        for (;it != s.end() && *it <v ; i++)it++;        return i;    }};

#define pbds(T) my_pbds_tree<T>

//gp_hash_tableでcountを使えないようにするため

template<class T,class U> struct my_unordered_map{    unordered_map<T,U> m;    my_unordered_map(){};    auto begin(){        return m.begin();    }    auto end(){return m.end();}    auto cbegin(){return m.cbegin();}    auto cend(){return m.cend();}    template<class V>auto erase(V v){return m.erase(v);}    void clear(){m.clear();}    /*countは gp_hash_tableに存在しない*/    /*!= m.end()*/    template<class V>auto find(V v){return m.find(v);}    template<class V>auto & operator [](V n) { return m[n] ;}};

#define unordered_map my_unordered_map

#define umapi unordered_map<ll,ll>

#define umapp unordered_map<P,ll>

#define umapip unordered_map<ll,P>



#else

#define unordered_map __gnu_pbds::gp_hash_table

//find_by_order(k) k番目のイテレーター

//order_of_key(k)  k以上が前から何番目か

#define pbds(U) __gnu_pbds::tree<U, __gnu_pbds::null_type, less<U>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>



#define umapi unordered_map<ll,ll,xorshift>

#define umapp unordered_map<P,ll,xorshift>

#define umapip unordered_map<ll,P,xorshift>



#endif

struct xorshift {    static uint64_t splitmix64(uint64_t x) {        x += 0x9e3779b97f4a7c15;        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;        return x ^ (x >> 31);    }    size_t operator()(uint64_t x) const {        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();        return splitmix64(x + FIXED_RANDOM);    }    size_t operator()(std::pair<ll, ll> x) const {        ll v=((x.first) << 32) | x.second;        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();        return splitmix64(v + FIXED_RANDOM);    }};

template<class U, class L> void operator+=(__gnu_pbds::tree<U, __gnu_pbds::null_type, less<U>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> &s, L v) { s.insert(v); }

//衝突対策

#define ws wszzzz



template<class A, class B, class C>struct T2 {A f;B s;C t;T2() { f = 0, s = 0, t = 0; }T2(A f, B s, C t) : f(f), s(s), t(t) {}bool operator<(const T2 &r) const {        return f != r.f ? f < r.f : s != r.s ? s < r.s : t < r.t;        /*return f != r.f ? f > r.f : s != r.s ?n s > r.s : t > r.t; 大きい順 */   }    bool operator>(const T2 &r) const {        return f != r.f ? f > r.f : s != r.s ? s > r.s : t > r.t;        /*return f != r.f ? f > r.f : s != r.s ? s > r.s : t > r.t; 小さい順 */   }    bool operator==(const T2 &r) const {        return f == r.f && s == r.s && t == r.t;    }    bool operator!=(const T2 &r) const {        return f != r.f || s != r.s || t != r.t;    }};

template<class A, class B, class C, class D> struct F2 {    A a;    B b;    C c;    D d;    F2() { a = 0, b = 0, c = 0, d = 0; }    F2(A a, B b, C c, D d) : a(a), b(b), c(c), d(d) {}    bool operator<(const F2 &r) const {        return a != r.a ? a < r.a : b != r.b ? b < r.b : c != r.c ? c < r.c : d < r.d;    /*    return a != r.a ? a > r.a : b != r.b ? b > r.b : c != r.c ? c > r.c : d > r.d;*/    }    bool operator>(const F2 &r) const {        return a != r.a ? a > r.a : b != r.b ? b > r.b : c != r.c ? c > r.c : d > r.d;/*        return a != r.a ? a < r.a : b != r.b ? b < r.b : c != r.c ? c < r.c : d < r.d;*/    }    bool operator==(const F2 &r) const {        return a == r.a && b == r.b && c == r.c && d == r.d;    }    bool operator!=(const F2 &r) const {        return a != r.a || b != r.b || c != r.c || d != r.d;    }    ll operator[](ll i) {        assert(i < 4);        return i == 0 ? a : i == 1 ? b : i == 2 ? c : d;    }};

typedef T2<ll, ll, ll> T;

typedef F2<ll, ll, ll, ll> F;

T mt(ll a, ll b, ll c) {return T(a, b, c);}



//@マクロ省略系 型,構造

#define double long double

#define ull unsigned long long

using dou = double;

using itn = int;

using str = string;

using bo= bool;

#define au auto

using P = pair<ll, ll>;

#define fi first

#define se second

#define beg begin

#define rbeg rbegin

#define con continue

#define bre break

#define brk break

#define is ==

#define el else

#define elf else if

#define wh while

#define upd update



#define maxq 1

#define minq -1



#define ZERO(a) memset(a,0,sizeof(a))

#define MINUS(a) memset(a,0xff,sizeof(a))

#define MALLOC(type, len) (type*)malloc((len) * sizeof(type))

#define lam(right) [&](ll& p){return p right;}



//マクロ省略系 コンテナ

using vi = vector<ll>;

using vb = vector<bool>;

using vs = vector<string>;

using vd = vector<double>;

using vc = vector<char>;

using vp = vector<P>;

using vt = vector<T>;



#define vec vector

#define o_vvt(o1, o2, o3, o4, name, ...) name

#define vvt0(t) vec<vec<t>>

#define vvt1(t,a) vec<vec<t>>a

#define vvt2(t,a, b) vec<vec<t>>a(b)

#define vvt3(t,a, b, c) vec<vec<t>> a(b,vec<t>(c))

#define vvt4(t,a, b, c, d) vec<vec<t>> a(b,vec<t>(c,d))



#define vvi(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(ll,__VA_ARGS__)

#define vvb(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(bool,__VA_ARGS__)

#define vvs(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(string,__VA_ARGS__)

#define vvd(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(double,__VA_ARGS__)

#define vvc(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(char,__VA_ARGS__)

#define vvp(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(P,__VA_ARGS__)

#define vvt(...) o_vvt(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(T,__VA_ARGS__)



template<typename T> vector<T> make_v(size_t a) { return vector<T>(a); }

template<typename T, typename... Ts> auto make_v(size_t a, Ts... ts) {return vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));}

#define vni(name, ...) auto name = make_v<ll>(__VA_ARGS__)

#define vnb(name, ...) auto name = make_v<bool>(__VA_ARGS__)

#define vns(name, ...) auto name = make_v<string>(__VA_ARGS__)

#define vnd(name, ...) auto name = make_v<double>(__VA_ARGS__)

#define vnc(name, ...) auto name = make_v<char>(__VA_ARGS__)

#define vnp(name, ...) auto name = make_v<P>(__VA_ARGS__)



#define PQ priority_queue<ll, vector<ll>, greater<ll> >

#define tos to_string

using mapi = map<ll, ll>;

using mapp = map<P, ll>;

using mapd = map<dou, ll>;

using mapc = map<char, ll>;

using maps = map<str, ll>;

using seti = set<ll>;

using setd = set<dou>;

using setc = set<char>;

using sets = set<str>;

using qui = queue<ll>;

#define uset unordered_set

#define useti unordered_set<ll,ll,xorshift>

#define mset multiset

#define mseti multiset<ll>

#define umap unordered_map

#define mmap multimap



template<class T> struct pq {    priority_queue<T, vector<T>, greater<T> > q;/*小さい順*/    T su = 0;    void clear() {q = priority_queue<T, vector<T>, greater<T> >();su = 0;}    void operator+=(T v) {su += v;q.push(v);}    T sum() {return su;}    T top() {return q.top();}    void pop() {su -= q.top();q.pop();}    T poll() {T ret = q.top();su -= ret;q.pop();return ret;}    ll size() {return q.size();}};

template<class T> struct pqg {    priority_queue<T> q;/*大きい順*/    T su = 0;    void clear() {q = priority_queue<T>();su = 0;}    void operator+=(T v) {su += v;q.push(v);}    T sum() {return su;}    T top() {return q.top();}    void pop() {su -= q.top();q.pop();}    T poll() {T ret = q.top();su -= ret;q.pop();return ret;}    ll size() {return q.size();}};

#define pqi pq<ll>

#define pqgi pqg<ll>

//マクロ 繰り返し

#define o_rep(o1, o2, o3, o4, name, ...) name

# define rep1(n) for(ll rep1i = 0,rep1lim=n; rep1i < rep1lim ; ++rep1i)

# define rep2(i, n) for(ll i = 0,rep2lim=n; i < rep2lim ; ++i)

#define rep3(i, m, n) for(ll i = m,rep3lim=n; i < rep3lim ; ++i)

#define rep4(i, m, n, ad) for(ll i = m,rep4lim=n; i < rep4lim ; i+= ad)

#define rep(...) o_rep(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)



#define rer2(i, n) for(ll i = n; i >= 0 ; i--)

#define rer3(i, m, n) for(ll i = m,rer3lim=n; i >= rer3lim ; i--)

#define rer4(i, m, n, dec) for(ll i = m,rer4lim=n; i >= rer4lim ; i-=dec)

#define rer(...) o_rep(__VA_ARGS__,rer4,rer3,rer2,)(__VA_ARGS__)



#define reps2(i, j, n) for(ll i = 0,reps2lim=n; i < reps2lim ;++i)for(ll j = 0; j < reps2lim ; ++j)

#define reps3(i, j, k, n) for(ll i = 0,reps3lim=n; i < reps3lim ; ++i)for(ll j = 0; j < reps3lim ; ++j)for(ll k = 0; k < reps3lim ; ++k)

#define reps4(i, j, k, l, n) for(ll i = 0,reps4lim=n; i < reps4lim ; ++i)for(ll j = 0; j < reps4lim ; ++j)for(ll k = 0; k < reps4lim ; ++k)for(ll l = 0; l < reps4lim ; ++l)

#define o_reps(o1, o2, o3, o4, o5, name, ...) name

#define reps(...) o_reps(__VA_ARGS__,reps4,reps3,reps2,rep2,)(__VA_ARGS__)



#define repss(i, j, k, a, b, c) for(ll i = 0; i < a ; ++i)for(ll j = 0; j < b ; ++j)for(ll k = 0; k < c ; ++k)

#define repv(i, j, A) rep(i,sz(A))rep(j,sz(A[0]))



#define fora(a, b) for(auto&& a : b)

//インデックスを前後含めて走査

#define fori(i, s, len) for (int i = s, prev = (s == 0) ? len - 1 : s - 1, next = (s == len - 1) ? 0 : s + 1, cou = 0; cou < len; cou++, prev = i, i = next, next = (next == len - 1) ? 0 : next + 1)

//vectorの中身を先頭から見る

#define foriv(i, v, d) int i=0;for (auto prev = d[sz(d)-1],next=d[1],v = d[0]; i < sz(d); i++, prev = v, v = next, next = (i>=sz(d)-1?d[0]:d[i+1]))

#define form(st, l, r) for (auto &&it = st.lower_bound(l); it != st.end() && (*it).fi < r; ++it)

#define forit(st, l, r) for (auto &&it = st.lower_bound(l); it != st.end() && (*it) < r;)



//マクロ 定数

#define k3 1010

#define k4 10101

#define k5 101010

#define k6 1010101

#define k7 10101010

const ll inf = (ll) 1e9 + 100;

const ll linf = (ll) 1e18 + 100;

const char infc = '{';

const string infs = "{";

const double eps = 1e-9;

const double PI = 3.1415926535897932384626433832795029L;



//マクロ省略形 関数等

#define arsz(a) (sizeof(a)/sizeof(a[0]))

#define sz(a) ((ll)(a).size())

#define mp make_pair

#define pb pop_back

#define pf push_front

#define eb emplace_back

#define all(a) (a).begin(),(a).end()

#define rall(a) (a).rbegin(),(a).rend()



constexpr bool ev(ll a) { return !(a & 1); }

constexpr bool od(ll a) { return (a & 1); }

//@拡張系 こう出来るべきというもの



//埋め込み 存在を意識せずに機能を増やされているもの

namespace std {

    template<> class hash<std::pair<signed, signed>> { public:size_t operator()(const std::pair<signed, signed> &x) const { return hash<ll>()(((ll) x.first << 32) | x.second); }};

    template<> class hash<std::pair<ll, ll>> { public:/*大きいllが渡されると、<<32でオーバーフローするがとりあえず問題ないと判断*/size_t operator()(const std::pair<ll, ll> &x) const { return hash<ll>()(((ll) x.first << 32) | x.second); }};

}

//stream まとめ

istream &operator>>(istream &iss, P &a) {    iss >> a.first >> a.second;    return iss;}template<typename T> istream &operator>>(istream &iss, vector<T> &vec) {    for (T &x: vec) iss >> x;    return iss;}template<class T, class U> ostream &operator<<(ostream &os, pair<T, U> p) {    os << p.fi << " " << p.se;    return os;}ostream &operator<<(ostream &os, T p) {    os << p.f << " " << p.s << " " << p.t;    return os;}ostream &operator<<(ostream &os, F p) {    os << p.a << " " << p.b << " " << p.c << " " << p.d;    return os;}template<typename T> ostream &operator<<(ostream &os, vector <T> &vec) {    for (ll i = 0; i < vec.size(); ++i)os << vec[i] << (i + 1 == vec.size() ? "" : " ");    return os;}template<typename T,typename U> ostream &operator<<(ostream &os, vector <pair<T,U>> &vec) {    for (ll i = 0; i < vec.size(); ++i){os << vec[i]; if(i!=vec.size()-1)os<<endl;}   return os;}template<typename T> ostream &operator<<(ostream &os, vector <vector<T>> &vec) {    for (ll i = 0; i < vec.size(); ++i) {        for (ll j = 0; j < vec[i].size(); ++j) { os << vec[i][j] << " "; }        os << endl;    }    return os;}template<typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &m) {    for (auto &&v:m) os << v;    return os;}template<class T> ostream &operator<<(ostream &os, set<T> s) {    fora(v, s) { os << v << " "; }    return os;}template<class T> ostream &operator<<(ostream &os, deque<T> a) {    fora(v, a)os << v << " ";    return os;}ostream &operator<<(ostream &os, vector <vector<char>> &vec) {    rep(h, sz(vec)) {        rep(w, sz(vec[0])) { os << vec[h][w]; }        os << endl;    }    return os;}

template<typename W, typename H> void resize(vector<W> &vec, const H head) { vec.resize(head); }template<typename W, typename H, typename ... T> void resize(vector<W> &vec, const H &head, const T ... tail) {vec.resize(head);for (auto &v: vec)resize(v, tail...);}

template<typename T, typename F> bool all_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool all_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (!all_of2(v[i], f))return false; }    return true;}

template<typename T, typename F> bool any_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool any_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (any_of2(v[i], f))return true; }    return false;}

template<typename T, typename F> bool none_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool none_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (none_of2(v[i], f))return false; }    return true;}

template<typename T, typename F> bool find_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll find_if2(vector<T> &v, F f) {    rep(i, sz(v)) { if (find_if2(v[i], f))return i; }    return sz(v);}

template<typename T, typename F> bool rfind_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll rfind_if2(vector<T> &v, F f) {    rer(i, sz(v) - 1) { if (rfind_if2(v[i], f))return i; }    return -1;}

template<class T> bool contains(string &s, const T &v) { return s.find(v) != string::npos; }

template<typename T> bool contains(vector<T> &v, const T &val) { return std::find(v.begin(), v.end(), val) != v.end(); }

template<typename T, typename F> bool contains_if2(vector<T> &v, F f) { return find_if(v.begin(), v.end(), f) != v.end(); }

template<typename T, typename F> ll count_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll count_if2(vector<T> &vec, F f) {    ll ret = 0;    fora(v, vec)ret += count_if2(v, f);    return ret;}

template<typename T, typename F> void for_each2(T &v, F f) { f(v); }

template<typename T, typename F> void for_each2(vector<T> &vec, F f) { fora(v, vec)for_each2(v, f); }

template<typename W> ll count_od(vector<W> &a) {return count_if2(a,[](ll v){return v&1 ;});}

template<typename W> ll count_ev(vector<W> &a) {return count_if2(a,[](ll v){return !(v&1) ;});}

#define all_of(a,right) all_of2(a,lam(right))

#define any_of(a,right) any_of2(a,lam(right))

#define none_of(a,right) none_of2(a,lam(right))

#define find_if(a,right) find_if2(a,lam(right))

#define rfind_if(a,right) rfind_if2(a,lam(right))

#define contains_if(a,right) contains_if2(a,lam(right))

#define count_if(a, right) count_if2(a,lam(right))

#define for_each(a, right) do{fora(v,a){v right;}}while(0)





template<class T, class U> void replace(vector<T> &a, T key, U v) { replace(a.begin(), a.end(), key, v); }

void replace(str &a, char key, str v) { if (v == "")a.erase(remove(all(a), key), a.end()); }

void replace(str &a, char key, char v) { replace(all(a), key, v); }

//keyと同じかどうか01で置き換える

template<class T, class U> void replace(vector<T> &a, U k) { rep(i, sz(a)) a[i] = a[i] == k; }

template<class T, class U> void replace(vector<vector<T >> &a, U k) { rep(i, sz(a))rep(j, sz(a[0])) a[i][j] = a[i][j] == k; }

template<class T> void replace(T &a) { replace(a, '#'); }

void replace(str &a, str key, str v) {stringstream t;ll kn = sz(key);std::string::size_type Pos(a.find(key));ll l = 0;while (Pos != std::string::npos) {t << a.substr(l, Pos - l);t << v;l = Pos + kn;Pos = a.find(key, Pos + kn);}t << a.substr(l, sz(a) - l);a = t.str();}

template<class T> bool includes(vector<T> &a, vector<T> &b) {vi c = a;vi d = b;sort(all(c));sort(all(d));return includes(all(c), all(d));}

template<class T> bool is_permutation(vector<T> &a, vector<T> &b) { return is_permutation(all(a), all(b)); }

template<class T> bool next_permutation(vector<T> &a) { return next_permutation(all(a)); }

void iota(vector<ll> &ve, ll s, ll n) {ve.resize(n);iota(all(ve), s);}

vi iota(ll s, ll len) {vi ve(len);iota(all(ve), s);return ve;}

template<class A, class B> auto vtop(vector<A> &a, vector<B> &b) {    assert(sz(a) == sz(b));    /*stringを0で初期化できない  */  vector<pair<A, B>> res;    rep(i, sz(a))res.eb(a[i], b[i]);return res;}

template<class A, class B> void ptov(vector<pair<A, B>> &p, vector<A> &a, vector<B> &b) {    a.resize(sz(p)), b.resize(sz(p));    rep(i, sz(p))a[i] = p[i].fi, b[i] = p[i].se;}

template<class A, class B, class C> auto vtot(vector<A> &a, vector<B> &b, vector<C> &c) {    assert(sz(a) == sz(b) && sz(b) == sz(c));    vector<T2<A, B, C>> res;    rep(i, sz(a))res.eb(a[i], b[i], c[i]);    return res;}

template<class A, class B, class C, class D> auto vtof(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    assert(sz(a) == sz(b) && sz(b) == sz(c) && sz(c) == sz(d));    vector<F2<A, B, C, D>> res;    rep(i, sz(a))res.eb(a[i], b[i], c[i], d[i]);    return res;}

enum pcomparator { fisi, fisd, fdsi, fdsd, sifi, sifd, sdfi, sdfd };

enum tcomparator {    fisiti, fisitd, fisdti, fisdtd, fdsiti, fdsitd, fdsdti, fdsdtd,    fitisi, fitisd, fitdsi, fitdsd, fdtisi, fdtisd, fdtdsi, fdtdsd,    sifiti, sifitd, sifdti, sifdtd, sdfiti, sdfitd, sdfdti, sdfdtd,    sitifi, sitifd, sitdfi, sitdfd, sdtifi, sdtifd, sdtdfi, sdfdfd,    tifisi, tifisd, tifdsi, tifdsd, tdfisi, tdfisd, tdfdsi, tdfdsd,    tisifi, tisifd, tisdfi, tisdfd, tdsifi, tdsifd, tdsdfi, tdsdfd};

template<class A, class B> void sort(vector<pair<A, B>> &a, pcomparator type) {    typedef pair<A, B> U;    if (type == fisi) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi < r.fi : l.se < r.se; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi < r.fi : l.se > r.se; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi > r.fi : l.se < r.se; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi > r.fi : l.se > r.se; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se < r.se : l.fi < r.fi; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se < r.se : l.fi > r.fi; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se > r.se : l.fi < r.fi; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se > r.se : l.fi > r.fi; });};template<class U> void sort(vector<U> &a, pcomparator type) {    if (type == fisi) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f > r.f; });};template<class A, class B, class C, class D> void sort(vector<F2<A, B, C, D> > &a, pcomparator type) {    typedef F2<A, B, C, D> U;    if (type == fisi) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a > r.a; });};template<class U> void sort(vector<U> &a, tcomparator type) {    if (type == 0) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s < r.s : l.t < r.t; });    else if (type == 1) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s < r.s : l.t > r.t; });    else if (type == 2) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s > r.s : l.t < r.t; });    else if (type == 3) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s > r.s : l.t > r.t; });    else if (type == 4) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s < r.s : l.t < r.t; });    else if (type == 5) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s < r.s : l.t > r.t; });    else if (type == 6) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s > r.s : l.t < r.t; });    else if (type == 7) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s > r.s : l.t > r.t; });    else if (type == 8) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t < r.t : l.s < r.s; });    else if (type == 9) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t < r.t : l.s > r.s; });    else if (type == 10) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t > r.t : l.s < r.s; });    else if (type == 11) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t > r.t : l.s > r.s; });    else if (type == 12) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t < r.t : l.s < r.s; });    else if (type == 13) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t < r.t : l.s > r.s; });    else if (type == 14) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t > r.t : l.s < r.s; });    else if (type == 15) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t > r.t : l.s > r.s; });    else if (type == 16) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f < r.f : l.t < r.t; });    else if (type == 17) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f < r.f : l.t > r.t; });    else if (type == 18) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f > r.f : l.t < r.t; });    else if (type == 19) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f > r.f : l.t > r.t; });    else if (type == 20) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f < r.f : l.t < r.t; });    else if (type == 21) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f < r.f : l.t > r.t; });    else if (type == 22) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f > r.f : l.t < r.t; });    else if (type == 23) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f > r.f : l.t > r.t; });    else if (type == 24) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t < r.t : l.f < r.f; });    else if (type == 25) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t < r.t : l.f > r.f; });    else if (type == 26) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t > r.t : l.f < r.f; });    else if (type == 27) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t > r.t : l.f > r.f; });    else if (type == 28) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t < r.t : l.f < r.f; });    else if (type == 29) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t < r.t : l.f > r.f; });    else if (type == 30) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t > r.t : l.f < r.f; });    else if (type == 31) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t > r.t : l.f > r.f; });    else if (type == 32) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == 33) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == 34) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == 35) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == 36) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == 37) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == 38) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == 39) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == 40) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == 41) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == 42) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == 43) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s > r.s : l.f > r.f; });    else if (type == 44) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == 45) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == 46) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == 47) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s > r.s : l.f > r.f; });}template<class A, class B, class C, class D> void sort(vector<F2<A, B, C, D>> &a, tcomparator type) {    typedef F2<A, B, C, D> U;    if (type == 0) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b < r.b : l.c < r.c; });    else if (type == 1) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b < r.b : l.c > r.c; });    else if (type == 2) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b > r.b : l.c < r.c; });    else if (type == 3) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b > r.b : l.c > r.c; });    else if (type == 4) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b < r.b : l.c < r.c; });    else if (type == 5) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b < r.b : l.c > r.c; });    else if (type == 6) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b > r.b : l.c < r.c; });    else if (type == 7) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b > r.b : l.c > r.c; });    else if (type == 8) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c < r.c : l.b < r.b; });    else if (type == 9) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c < r.c : l.b > r.b; });    else if (type == 10) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c > r.c : l.b < r.b; });    else if (type == 11) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c > r.c : l.b > r.b; });    else if (type == 12) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c < r.c : l.b < r.b; });    else if (type == 13) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c < r.c : l.b > r.b; });    else if (type == 14) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c > r.c : l.b < r.b; });    else if (type == 15) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c > r.c : l.b > r.b; });    else if (type == 16) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a < r.a : l.c < r.c; });    else if (type == 17) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a < r.a : l.c > r.c; });    else if (type == 18) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a > r.a : l.c < r.c; });    else if (type == 19) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a > r.a : l.c > r.c; });    else if (type == 20) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a < r.a : l.c < r.c; });    else if (type == 21) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a < r.a : l.c > r.c; });    else if (type == 22) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a > r.a : l.c < r.c; });    else if (type == 23) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a > r.a : l.c > r.c; });    else if (type == 24) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c < r.c : l.a < r.a; });    else if (type == 25) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c < r.c : l.a > r.a; });    else if (type == 26) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c > r.c : l.a < r.a; });    else if (type == 27) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c > r.c : l.a > r.a; });    else if (type == 28) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c < r.c : l.a < r.a; });    else if (type == 29) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c < r.c : l.a > r.a; });    else if (type == 30) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c > r.c : l.a < r.a; });    else if (type == 31) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c > r.c : l.a > r.a; });    else if (type == 32) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == 33) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == 34) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == 35) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == 36) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == 37) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == 38) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == 39) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == 40) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == 41) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == 42) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == 43) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b > r.b : l.a > r.a; });    else if (type == 44) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == 45) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == 46) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == 47) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b > r.b : l.a > r.a; });}



void sort(string &a) { sort(all(a)); }

template<class T> void sort(vector<T> &a) { sort(all(a)); }

//P l, P rで f(P) の形で渡す

template<class U, class F> void sort(vector<U> &a, F f) { sort(all(a), [&](U l, U r) { return f(l) < f(r); }); };

template<class T> void rsort(vector<T> &a) { sort(all(a), greater<T>()); };

template<class U, class F> void rsort(vector<U> &a, F f) { sort(all(a), [&](U l, U r) { return f(l) > f(r); }); };

//F = T<T>

//例えばreturn p.fi + p.se;

template<class A, class B> void sortp(vector<A> &a, vector<B> &b) {    auto c = vtop(a, b);    sort(c);    rep(i, sz(a)) a[i] = c[i].fi, b[i] = c[i].se;}template<class A, class B, class F> void sortp(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    sort(c, f);    rep(i, sz(a)) a[i] = c[i].fi, b[i] = c[i].se;}template<class A, class B> void rsortp(vector<A> &a, vector<B> &b) {    auto c = vtop(a, b);    rsort(c);    rep(i, sz(a))a[i] = c[i].first, b[i] = c[i].second;}template<class A, class B, class F> void rsortp(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    rsort(c, f);    rep(i, sz(a))a[i] = c[i].first, b[i] = c[i].second;}

template<class A, class B, class C> void sortt(vector<A> &a, vector<B> &b, vector<C> &c) {    auto d = vtot(a, b, c);    sort(d);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class F> void sortt(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    sort(d, f);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C> void rsortt(vector<A> &a, vector<B> &b, vector<C> &c) {    auto d = vtot(a, b, c);    rsort(d);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class F> void rsortt(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    rsort(d, f);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class D> void sortf(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    auto e = vtof(a, b, c, d);    sort(e);    rep(i, sz(a)) a[i] = e[i].a, b[i] = e[i].b, c[i] = e[i].c, d[i] = e[i].d;}

template<class A, class B, class C, class D> void rsortf(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    auto e = vtof(a, b, c, d);    rsort(e);    rep(i, sz(a)) a[i] = e[i].a, b[i] = e[i].b, c[i] = e[i].c, d[i] = e[i].d;}

//sortindex 元のvectorはソートしない

template<class T> vi sorti(vector<T> &a) {    auto b = a;    vi ind = iota(0, sz(a));    sortp(b, ind);    return ind;}/*indexの分で型が変わるためpcomparatorが必要*/template<class T> vi sorti(vector<T> &a, pcomparator f) {    auto b = a;    vi ind = iota(0, sz(a));    sortp(b, ind, f);    return ind;}template<class T, class F> vi sorti(vector<T> &a, F f) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(a[x]) < f(a[y]); });    return ind;}template<class T> vi rsorti(vector<T> &a) {    auto b = a;    vi ind = iota(0, sz(a));    rsortp(b, ind);    return ind;}template<class T, class F> vi rsorti(vector<T> &a, F f) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(a[x]) > f(a[y]); });    return ind;}template<class A, class B, class F> vi sortpi(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(c[x]) < f(c[y]); });    return ind;}template<class A, class B> vi sortpi(vector<A> &a, vector<B> &b, pcomparator f) {    vi ind = iota(0, sz(a));    auto c = a;    auto d = b;    sortt(c, d, ind, f);    return ind;}template<class A, class B> vi sortpi(vector<A> &a, vector<B> &b) { return sortpi(a, b, fisi); };template<class A, class B, class F> vi rsortpi(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(c[x]) > f(c[y]); });    return ind;}template<class A, class B> vi rsortpi(vector<A> &a, vector<B> &b) { return sortpi(a, b, fdsd); };template<class A, class B, class C, class F> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(d[x]) < f(d[y]); });    return ind;}template<class A, class B, class C> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c, pcomparator f) {    vi ind = iota(0, sz(a));    auto d = vtof(a, b, c, ind);    sort(d, f);    rep(i, sz(a))ind[i] = d[i].d;    return ind;}template<class A, class B, class C> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) {        if (a[x] == a[y]) {            if (b[x] == b[y])return c[x] < c[y];            else return b[x] < b[y];        } else {            return a[x] < a[y];        }    });    return ind;}template<class A, class B, class C, class F> vi rsortti(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(d[x]) > f(d[y]); });    return ind;}template<class A, class B, class C> vi rsortti(vector<A> &a, vector<B> &b, vector<C> &c) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) {        if (a[x] == a[y]) {            if (b[x] == b[y])return c[x] > c[y];            else return b[x] > b[y];        } else {            return a[x] > a[y];        }    });    return ind;}

template<class T> void sort2(vector<vector<T >> &a) { for (ll i = 0, n = a.size(); i < n; ++i)sort(a[i]); }

template<class T> void rsort2(vector<vector<T >> &a) { for (ll i = 0, n = a.size(); i < n; ++i)rsort(a[i]); }



template<typename A, size_t N, typename T> void fill(A (&a)[N], const T &v) { rep(i, N)a[i] = v; }template<typename A, size_t N, size_t O, typename T> void fill(A (&a)[N][O], const T &v) { rep(i, N)rep(j, O)a[i][j] = v; }template<typename A, size_t N, size_t O, size_t P, typename T> void fill(A (&a)[N][O][P], const T &v) { rep(i, N)rep(j, O)rep(k, P)a[i][j][k] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, typename T> void fill(A (&a)[N][O][P][Q], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)a[i][j][k][l] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, typename T> void fill(A (&a)[N][O][P][Q][R], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)a[i][j][k][l][m] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S, typename T> void fill(A (&a)[N][O][P][Q][R][S], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)rep(n, S)a[i][j][k][l][m][n] = v; }

template<typename W, typename T>void fill(W &xx, const T vall) {    xx = vall;}template<typename W, typename T>void fill(vector<W> &vecc, const T vall) {    for (auto &&vx     : vecc)fill(vx, vall);}

template<typename W,typename T>void fill(vector<W> &xx,const T v,ll len) {rep(i, len)xx[i]=v;}

template<typename W,typename T>void fill(vector<vector<W>> &xx,const T v,ll lh,ll lw) {rep(i, lh)rep(j,lw)xx[i][j]=v;}

template<class T,class U>void fill(vector<T> &a,U val,vi& ind) {fora(v,ind)a[v]=val;}



template<typename A, size_t N> A sum(A (&a)[N]) {    A res = 0;    rep(i, N)res += a[i];    return res;}template<typename A, size_t N, size_t O> A sum(A (&a)[N][O]) {    A res = 0;    rep(i, N)rep(j, O)res += a[i][j];    return res;}template<typename A, size_t N, size_t O, size_t P> A sum(A (&a)[N][O][P]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)res += a[i][j][k];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q> A sum(A (&a)[N][O][P][Q]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)res += a[i][j][k][l];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R> A sum(A (&a)[N][O][P][Q][R]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)res += a[i][j][k][l][m];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S> A sum(A (&a)[N][O][P][Q][R][S]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)rep(n, S)res += a[i][j][k][l][m][n];    return res;}

//@汎用便利関数 入力

ll in() {ll ret;cin >> ret;return ret;}

string sin() {string ret;cin >> ret;return ret;}

template<class T>  void in(T &head) { cin >> head; }template<class T, class... U>  void in(T &head, U &... tail) {cin >> head;in(tail...);}



#define o_din(o1, o2, o3, o4, o5, o6, name, ...) name

#define din1(a) ll a;cin>>a

#define din2(a, b) ll a,b;cin>>a>> b

#define din3(a, b, c) ll a,b,c;cin>>a>>b>>c

#define din4(a, b, c, d) ll a,b,c,d;cin>>a>>b>>c>>d

#define din5(a, b, c, d, e) ll a,b,c,d,e;cin>>a>>b>>c>>d>>e

#define din6(a, b, c, d, e, f) ll a,b,c,d,e,f;cin>>a>>b>>c>>d>>e>>f

#define din(...) o_din(__VA_ARGS__,din6,din5,din4,din3,din2 ,din1)(__VA_ARGS__)



#define o_dins(o1, o2, o3, o4, o5, o6, name, ...) name

#define dins1(a) str a;cin>>a

#define dins2(a, b) str a,b;cin>>a>> b

#define dins3(a, b, c) str a,b,c;cin>>a>>b>>c

#define dins4(a, b, c, d) str a,b,c,d;cin>>a>>b>>c>>d

#define dins5(a, b, c, d, e) str a,b,c,d,e;cin>>a>>b>>c>>d>>e

#define dins6(a, b, c, d, e, f) str a,b,c,d,e,f;cin>>a>>b>>c>>d>>e>>f

#define dins(...) o_dins(__VA_ARGS__,dins6,dins5,dins4,dins3,dins2 ,dins1)(__VA_ARGS__)



#define o_dind(o1, o2, o3, o4, name, ...) name

#define din1d(a) din1(a);a--

#define din2d(a, b) din2(a,b);a--,b--

#define din3d(a, b, c) din3(a,b,c);a--,b--,c--

#define din4d(a, b, c, d) din4(a,b,c,d);a--,b--,c--,d--

#define dind(...) o_dind(__VA_ARGS__,din4d,din3d,din2d ,din1d)(__VA_ARGS__)



template<class T> void out2(T &&head) { cout << head; }

template<class T, class... U> void out2(T &&head, U &&... tail) {    cout << head << " ";    out2(tail...);}

template<class T, class... U> void out(T &&head, U &&... tail) {    cout << head << " ";    out2(tail...);    cout << "" << endl;}

template<class T> void out(T &&head) {    cout << head  << endl;}

void out() {    cout << ""  << endl;}

#ifdef _DEBUG

template<class T> string out_m(vector<T> &a, ll W = inf) {stringstream ss;    if (W == inf)W = min(sz(a), 12ll);   if(sz(a)==0)return ss.str();   rep(i, W) { ss << a[i] << " "; }    ss << "" << endl;    return ss.str();}

template<class T> string out_m(vector<vector<T> > &a, ll H = inf, ll W = inf, int key = -1) {

    H = min({H, sz(a), 12ll});

    W = min({W, sz(a[0]), 12ll});

    stringstream ss;

    ss << endl;

    if (key == -1)ss << " *|"; else ss << " " << key << "|";

    rep(w, W)ss << std::right << std::setw(4) << w;

    ss << "" << endl;

    rep(w, W * 4 + 3)ss << "_";

    ss << "" << endl;

    rep(h, H) {

        ss << std::right << std::setw(2) << h << "|";

        rep(w, min(sz(a[h]),12ll)) { if (abs(a[h][w]) == linf) ss << "   e" << ""; else ss << std::right << std::setw(4) << a[h][w]; }

        ss << "" << endl;

    }

    ss << endl;

    return ss.str();

}

/*@formatter:off*/

template<class T> string out_m(vector<vector<vector<T> > > &a, ll H = inf, ll W = inf, ll U = inf) {stringstream ss;    if (H == inf)H = 5;    H = min(H, sz(a));    rep(i, H) {        ss << endl;        ss << out_m(a[i], W, U, i);    }    ss << endl;    return ss.str();}

string out_m(int a) {stringstream ss;ss << a << endl;return ss.str();}

template<class T> string out_m(T &a) {stringstream ss;ss << a << endl;return ss.str();}

template<class T> void outv(vector<T> &a, ll W=inf) {cout << out_m(a,W) << endl;}

template<class T> void outv(vector<vector<T> > &a, ll H = linf, ll W = linf,int key=-1) {    cout << out_m(a,H,W,key) << endl;}

template<class T> void outv(vector<vector<vector<T> > > &a, ll H = linf, ll W = linf,ll U = linf) {cout << out_m(a,H,W,U)<< endl;}

#else

template<class T> void outv(vector<T> &a, ll W = inf) {

    rep(i, min(W, sz(a))) { cout << a[i] << " "; }

    cout << "" << endl;

}

template<class T> void outv(vector<vector<T> > &a, ll H = linf, ll W = linf, int key = -1) { rep(i, min(H, sz(a))) { outv(a[i], W); }}

template<class T> void outv(vector<vector<vector<T> > > &a, ll H = linf, ll W = linf, ll U = linf) { ; }

#endif

template<class T> void outl(vector<T> &a, int n = inf) { rep(i, min(n, sz(a)))cout << a[i] << endl; }

//テーブルをスペースなしで出力

template<class T> void outt(vector<vector<T>>&a){    rep(i,sz(a)){        rep(j,sz(a[i])){            cout<<a[i][j];        }        cout<<endl;    }}

//int型をbit表記で出力

void outb(int a){cout << bitset<20>(a) << endl;}

template<class T> void na(vector<T> &a, ll n) {    a.resize(n);    rep(i, n)cin >> a[i];}

#define dna(a, n) vi a(n); rep(dnai,n) cin >> a[dnai];

#define dnad(a, n) vi a(n); rep(dnai,n) cin >> a[dnai],a[dnai]--;

template<class T> void nao(vector<T> &a, ll n) {    a.resize(n + 1);    a[0] = 0;    rep(i, n)cin >> a[i + 1];}

template<class T> void naod(vector<T> &a, ll n) {    a.resize(n + 1);    a[0] = 0;    rep(i, n)cin >> a[i + 1], a[i + 1]--;}

template<class T> void nad(vector<T> &a, ll n) {    a.resize(n);    rep(i, n)cin >> a[i], a[i]--;}

template<class T, class U> void na2(vector<T> &a, vector<U> &b, ll n) {    a.resize(n);    b.resize(n);    rep(i, n)cin >> a[i] >> b[i];}

#define dna2(a, b, n) vi a(n),b(n);rep(dna2i, n)cin >> a[dna2i] >> b[dna2i];

template<class T, class U> void nao2(vector<T> &a, vector<U> &b, ll n) {    a.resize(n + 1);    b.resize(n + 1);    a[0] = b[0] = 0;    rep(i, n)cin >> a[i + 1] >> b[i + 1];}

#define dna2d(a, b, n) vi a(n),b(n);rep(dna2di, n){cin >> a[dna2di] >> b[dna2di];a[dna2di]--,b[dna2di]--;}

template<class T, class U> void na2d(vector<T> &a, vector<U> &b, ll n) {    a.resize(n);    b.resize(n);    rep(i, n)cin >> a[i] >> b[i], a[i]--, b[i]--;}

template<class T, class U, class W> void na3(vector<T> &a, vector<U> &b, vector<W> &c, ll n) {    a.resize(n);    b.resize(n);    c.resize(n);    rep(i, n)cin >> a[i] >> b[i] >> c[i];}

#define dna3(a, b, c, n) vi a(n),b(n),c(n);   rep(dna3i, n)cin >> a[dna3i] >> b[dna3i] >> c[dna3i];

template<class T, class U, class W> void na3d(vector<T> &a, vector<U> &b, vector<W> &c, ll n) {    a.resize(n);    b.resize(n);    c.resize(n);    rep(i, n)cin >> a[i] >> b[i] >> c[i], a[i]--, b[i]--, c[i]--;}

#define dna3d(a, b, c, n) vi a(n),b(n),c(n);  rep(dna3di, n){cin >> a[dna3di] >> b[dna3di] >> c[dna3di];a[dna3di]--,b[dna3di]--,c[dna3di]--;}

template<class T, class U, class W, class X> void na4(vector<T> &a, vector<U> &b, vector<W> &c, vector<X> &d, ll n) {a.resize(n);    b.resize(n);    c.resize(n);    d.resize(n);    rep(i, n)cin >> a[i] >> b[i] >> c[i] >> d[i];}

#define dna4(a, b, c, d, n) vi a(n),b(n),c(n),d(n);   rep(dna4i, n)cin >> a[dna4i] >> b[dna4i] >> c[dna4i]>>d[dna4i];

#define dna4d(a, b, c, d, n) vi a(n),b(n),c(n),d(n);   rep(dna4i, n)cin >> a[dna4i] >> b[dna4i] >> c[dna4i]>>d[dna4i],--a[dna4i] ,-- b[dna4i],-- c[dna4i],--d[dna4i];

#define nt(a, h, w) resize(a,h,w);rep(nthi,h)rep(ntwi,w) cin >> a[nthi][ntwi];

#define ntd(a, h, w) resize(a,h,w);rep(ntdhi,h)rep(ntdwi,w) cin >> a[ntdhi][ntdwi], a[ntdhi][ntdwi]--;

#define ntp(a, h, w) resize(a,h+2,w+2);fill(a,'#');rep(ntphi,1,h+1)rep(ntpwi,1,w+1) cin >> a[ntphi][ntpwi];

//デバッグ

#define sp << " " <<



#define debugName(VariableName) # VariableName



#define deb1(x)  debugName(x)<<" = "<<out_m(x)

#define deb2(x, ...) deb1(x) <<", "<< deb1(__VA_ARGS__)

#define deb3(x, ...) deb1(x) <<", "<< deb2(__VA_ARGS__)

#define deb4(x, ...) deb1(x) <<", "<< deb3(__VA_ARGS__)

#define deb5(x, ...) deb1(x) <<", "<< deb4(__VA_ARGS__)

#define deb6(x, ...) deb1(x) <<", "<< deb5(__VA_ARGS__)

#define deb7(x, ...) deb1(x) <<", "<< deb6(__VA_ARGS__)

#define deb8(x, ...) deb1(x) <<", "<< deb7(__VA_ARGS__)

#define deb9(x, ...) deb1(x) <<", "<< deb8(__VA_ARGS__)

#define deb10(x, ...) deb1(x) <<", "<< deb9(__VA_ARGS__)



#define o_ebug(o1, o2, o3, o4, o5, o6, o7, o8, o9, o10, name, ...) name



#ifdef _DEBUG

#define deb(...)  cerr<< o_ebug(__VA_ARGS__,deb10,deb9,deb8,deb7,deb6,deb5,deb4,deb3,deb2,deb1)(__VA_ARGS__) <<endl

#else

#define deb(...) ;

#endif





#define debugline(x) cerr << x << " " << "(L:" << __LINE__ << ")" << '\n'





//@formatter:off

//よく使うクラス、構造体

struct unionfind {

    vector<ll> par;

    vector<ll> siz;

    vector<ll> es;

    ll n, trees;//連結グループの数(親の種類)

    unionfind(ll n) : n(n), trees(n) {        par.resize(n);        siz.resize(n);        es.resize(n);        for (ll i = 0; i < n; i++) {            par[i] = i;            siz[i] = 1;        }    }

    ll root(ll x) { if (par[x] == x) { return x; } else { return par[x] = root(par[x]); }}

    bool unite(ll x, ll y) {

        x = root(x);

        y = root(y);

        es[x]++;

        if (x == y) return false;

        if (siz[x] > siz[y]) swap(x, y);

        trees--;

        par[x] = y;

        siz[y] += siz[x];

        es[y] += es[x];

        return true;

    }

    bool same(ll x, ll y) { return root(x) == root(y); }

    ll size(ll x) { return siz[root(x)]; }

    ll esize(ll x) { return es[root(x)]; }

    vi sizes(){        vi cou(n);        vi ret;        ret.reserve(n);        rep(i, n){            cou[root (i)]++;        }        rep(i, n){            if(cou[i])ret.push_back(cou[i]);        }        return ret;    }

    //つながりを無向グラフと見なし、xが閉路に含まれるか判定

    bool close(ll x) { return esize(x) >= size(x); }

    vec<vi> sets() {        vi ind(n, -1);        ll i = 0;        vvi(res, trees);        rep(j, n) {            ll r = root(j);            if (ind[r] == -1)ind[r] = i++;            res[ind[r]].push_back(j);        }        rep(i, trees) {            ll r = root(res[i][0]);            if (res[i][0] == r)continue;            rep(j, 1, sz(res[i])) {                if (res[i][j] == r) {                    swap(res[i][0], res[i][j]);                    break;                }            }        }        return res;    }

};//@formatter:off





using bll =__int128;

using u32 = unsigned;

using u64 = unsigned long long;

using u128 = __uint128_t;



std::ostream &operator<<(std::ostream &dest, __int128_t value) {    std::ostream::sentry s(dest);    if (s) {        __uint128_t tmp = value < 0 ? -value : value;        char buffer[128];        char *d = std::end(buffer);        do {            --d;            *d = "0123456789"[tmp % 10];            tmp /= 10;        } while (tmp != 0);        if (value < 0) {            --d;            *d = '-';        }        ll len = std::end(buffer) - d;        if (dest.rdbuf()->sputn(d, len) != len) { dest.setstate(std::ios_base::badbit); }    }    return dest;}

//__int128 toi128(string &s) {    __int128 ret = 0;    for (ll i = 0; i < s.length(); ++i)        if ('0' <= s[i] && s[i] <= '9')            ret = 10 * ret + s[i] - '0';    return ret;}





//エラー

void ole() {

#ifdef _DEBUG

    debugline("ole");    exit(0);

#endif

    string a = "a";    rep(i, 30)a += a;    rep(i, 1 << 17)cout << a << endl;    cout << "OLE 出力長制限超過" << endl;    exit(0);}

void re() {    assert(0 == 1);    exit(0);}

void tle() { while (inf)cout << inf << endl; }



//便利関数



//テスト用

char ranc() { return (char) ('a' + rand() % 26); }

ll rand(ll min, ll max) {    assert(min <= max);    if (min >= 0 && max >= 0) { return rand() % (max + 1 - min) + min; } else if (max < 0) { return -rand(-max, -min); } else { if (rand() % 2) { return rand(0, max); } else { return -rand(0, -min); }}}

vi ranv(ll n, ll min, ll max) {    vi v(n);    rep(i, n)v[i] = rand(min, max);    return v;}

str ransu(ll n) {    str s;    rep(i, n)s += (char) rand('A', 'Z');    return s;}

str ransl(ll n) {    str s;    rep(i, n)s += (char) rand('a', 'z');    return s;}

//単調増加

vi ranvinc(ll n, ll min, ll max) {    vi v(n);    bool bad = 1;    while (bad) {        bad = 0;        v.resize(n);        rep(i, n) {            if (i && min > max - v[i - 1]) {                bad = 1;                break;            }            if (i)v[i] = v[i - 1] + rand(min, max - v[i - 1]); else v[i] = rand(min, max);        }    }    return v;}

//便利 汎用



void ranvlr(ll n, ll min, ll max, vi &l, vi &r) {    l.resize(n);    r.resize(n);    rep(i, n) {        l[i] = rand(min, max);        r[i] = l[i] + rand(0, max - l[i]);    }}

vp run_length(vi &a) {    vp ret;    ret.eb(a[0], 1);    rep(i, 1, sz(a)) { if (ret.back().fi == a[i]) { ret.back().se++; } else { ret.eb(a[i], 1); }}    return ret;}

vector<pair<char, ll>> run_length(string &a) {    vector<pair<char, ll>> ret;    ret.eb(a[0], 1);    rep(i, 1, sz(a)) { if (ret.back().fi == a[i]) { ret.back().se++; } else { ret.eb(a[i], 1); }}    return ret;}

template<class F> ll mgr(ll ok, ll ng, F f) {    if (ok < ng)        while (ng - ok > 1) {            ll mid = (ok + ng) / 2;            if (f(mid))ok = mid; else ng = mid;        }    else        while (ok - ng > 1) {            ll mid = (ok + ng) / 2;            if (f(mid))ok = mid; else ng = mid;        }    return ok;}

//strを整数として比較

string smax(str &a, str b) {    if (sz(a) < sz(b)) { return b; }    else if (sz(a) > sz(b)) { return a; }    else if (a < b)return b;    else return a;}

//strを整数として比較

string smin(str &a, str b) {    if (sz(a) > sz(b)) { return b; }    else if (sz(a) < sz(b)) { return a; }    else if (a > b)return b;    else return a;}

template<typename W, typename T> ll find(vector<W> &a, const T key) {    rep(i, sz(a))if (a[i] == key)return i;    return -1;}

template<typename W, typename T> P find(vector<vector<W >> &a, const T key) {    rep(i, sz(a))rep(j, sz(a[0]))if (a[i][j] == key)return mp(i, j);    return mp(-1, -1);}

template<typename W, typename U> T find(vector<vector<vector<W >>> &a, const U key) {    rep(i, sz(a))rep(j, sz(a[0]))rep(k, sz(a[0][0]))if (a[i][j][k] == key)return mt(i, j, k);    return mt(-1, -1, -1);}





template<typename W, typename T> ll count2(W &a, const T k) { return a == k; }

template<typename W, typename T> ll count2(vector<W> &a, const T k) {    ll ret = 0;    fora(v, a)ret += count2(v, k);    return ret;}

template<typename W, typename T> ll count(vector<W> &a, const T k) {    ll ret = 0;    fora(v, a)ret += count2(v, k);    return ret;}

ll count(str &a, str k) {    ll ret = 0, len = k.length();    auto pos = a.find(k);    while (pos != string::npos)pos = a.find(k, pos + len), ++ret;    return ret;}

vi count(str &a) {    vi cou(26);    char c = 'a';    if ('A' <= a[0] && a[0] <= 'Z')c = 'A';    rep(i, sz(a))++cou[a[i] - c];    return cou;}

#define couif count_if

//algorythm





ll rev(ll a) {    ll res = 0;    while (a) {        res *= 10;        res += a % 10;        a /= 10;    }    return res;}

template<class T> void rev(vector<T> &a) { reverse(all(a)); }

template<class U> void rev(vector<vector<U>> &a) {    vector<vector<U> > b(sz(a[0]), vector<U>(sz(a)));    rep(h, sz(a)) rep(w, sz(a[0]))b[w][h] = a[h][w];    a = b;}

void  rev(string &a) { reverse(all(a)); }

constexpr ll p10[] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000ll, 100000000000ll, 1000000000000ll, 10000000000000ll, 100000000000000ll, 1000000000000000ll, 10000000000000000ll, 100000000000000000ll, 1000000000000000000ll};



ll get(ll a, ll keta) { return (a / (ll) pow(10, keta)) % 10; }

ll keta(ll v) { if (v < p10[9]) { if (v < p10[4]) { if (v < p10[2]) { if (v < p10[1]) return 1; else return 2; } else { if (v < p10[3]) return 3; else return 4; }} else { if (v < p10[7]) { if (v < p10[5]) return 5; else if (v < p10[6])return 6; else return 7; } else { if (v < p10[8])return 8; else return 9; }}} else { if (v < p10[13]) { if (v < p10[11]) { if (v < p10[10]) return 10; else return 11; } else { if (v < p10[12]) return 12; else return 13; }} else { if (v < p10[15]) { if (v < p10[14]) return 14; else if (v < p10[15])return 15; else return 16; } else { if (v < p10[17])return 17; else return 18; }}}}

ll dsum(ll v,ll sin=10) {    ll ret = 0;    for (; v; v /= sin)ret += v % sin;    return ret;}



struct sint {

    ll v;

    sint(ll v) : v(v) {}

    operator ll() { return v; }

    //下からi番目

    ll operator[](ll i) { return (v / p10[i]) % 10; }

    ll back(ll i) { return operator[](i); }

    //上からi番目

    ll top(ll i) {

        ll len = keta(v);

        return operator[](len - 1 - i);

    }

    //先頭からi番目にセット

    ll settop(ll i, ll k) {

        ll len = keta(v);

        return set(len - 1 - i, k);

    }

    ll set(ll i, ll k) {

        if (i < 0)return settop(abs(i) - 1, k);

        return v += p10[i] * (k - (v / p10[i]) % 10);

    }

    ll add(ll i, ll k = 1) { return v += p10[i] * k; }

    ll addtop(ll i, ll k = 1) { return v += p10[keta(v) - i - 1] * k; }

    ll dec(ll i, ll k = 1) { return v -= p10[i] * k; }

    ll dectop(ll i, ll k = 1) { return v -= p10[keta(v) - i - 1] * k; }

#define op(t, o)template<class T> t operator o(T r){return v o r;}

    op(ll, +=);    op(ll, -=);    op(ll, *=);    op(ll, /=);    op(ll, %=);    op(ll, +);    op(ll, -);    op(ll, *);    op(ll, /);    op(ll, %);    op(bool, ==);    op(bool, !=);    op(bool, <);    op(bool, <=);    op(bool, >);    op(bool, >=);

#undef op

    template<class T>  ll operator<<=(T r) { return v *= p10[r]; }

    template<class T>  ll operator<<(T r) { return v * p10[r]; }

    template<class T>  ll operator>>=(T r) { return v /= p10[r]; }

    template<class T>  ll operator>>(T r) { return v / p10[r]; }

};

ll mask10(ll v) { return p10[v] - 1; }

//変換系

//[v] := iとなるようなvectorを返す

//存在しない物は-1

template<class T> auto keys(T& a) {    vector<decltype((a.begin())->fi)> res;    for (auto &&k :a)res.push_back(k.fi);    return res;}

template<class T> auto values(T& a) {    vector<decltype((a.begin())->se)> res;    for (auto &&k :a)res.push_back(k.se);    return res;}

template<class T, class U>  bool chma(T &a, const U &b) {    if (a < b) {        a = b;        return true;    }    return false;}

template<class T, class U>  bool chmi(T &a, const U &b) {    if (b < a) {        a = b;        return true;    }    return false;}

template<class T>  T min(T a, signed b) { return a < b ? a : b; }

template<class T>  T max(T a, signed b) { return a < b ? b : a; }

template<class T>  T min(T a, T b, T c) { return a >= b ? b >= c ? c : b : a >= c ? c : a; }

template<class T>  T max(T a, T b, T c) { return a <= b ? b <= c ? c : b : a <= c ? c : a; }

template<class T>  T min(vector<T>& a) { return *min_element(all(a)); }

template<class T>  T mini(vector<T>& a) { return min_element(all(a)) - a.begin(); }

template<class T>  T min(vector<T>& a, ll n) { return *min_element(a.begin(), a.begin() + min(n, sz(a))); }

template<class T>  T min(vector<T>& a, ll s, ll n) { return *min_element(a.begin() + s, a.begin() + min(n, sz(a))); }

template<class T>  T max(vector<T>& a) { return *max_element(all(a)); }

template<class T,class U>  T max(vector<T>& a,vector<U>& b) { return max(*max_element(all(a)),*max_element(all(b))); }

template<class T>  T maxi(vector<T>& a) { return max_element(all(a)) - a.begin(); }

template<class T>  T max(vector<T>& a, ll n) { return *max_element(a.begin(), a.begin() + min(n, sz(a))); }

template<class T>  T max(vector<T>& a, ll s, ll n) { return *max_element(a.begin() + s, a.begin() + min(n, sz(a))); }

template<typename A, size_t N>  A max(A (&a)[N]) {    A res = a[0];    rep(i, N)res = max(res, a[i]);    return res;}template<typename A, size_t N, size_t O>  A max(A (&a)[N][O]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P>  A max(A (&a)[N][O][P]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q>  A max(A (&a)[N][O][P][Q], const T &v) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R>  A max(A (&a)[N][O][P][Q][R]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S>  A max(A (&a)[N][O][P][Q][R][S]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}

template<typename A, size_t N>  A min(A (&a)[N]) {    A res = a[0];    rep(i, N)res = min(res, a[i]);    return res;}template<typename A, size_t N, size_t O>  A min(A (&a)[N][O]) {    A res = min(a[0]);    rep(i, N)res = min(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P>  A min(A (&a)[N][O][P]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q>  A min(A (&a)[N][O][P][Q], const T &v) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R>  A min(A (&a)[N][O][P][Q][R]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S>  A min(A (&a)[N][O][P][Q][R][S]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}

template<class T> T sum(vector<T> &v, ll s, ll t) {    T ret = 0;    rep(i, s, min(sz(v), t))ret += v[i];    return ret;}template<class T> T sum(vector<T> &v, ll t=inf) {    return sum(v, 0, t);}template<class T> T sum(vector<vector<T> > &v) {    T ret = 0;    rep(i, sz(v))ret += sum(v[i]);    return ret;}template<class T> T sum(vector<vector<vector<T> > > &v) {    T ret = 0;    rep(i, sz(v))ret += sum(v[i]);    return ret;}template<class T> T sum(vector<vector<vector<vector<T> > > > &v) {    T ret = 0;    rep(i, sz(v))ret += sum(v[i]);    return ret;}template<class T> T sum(vector<vector<vector<vector<vector<T> > > > > &v) {    T ret = 0;    rep(i, sz(v))ret += sum(v[i]);    return ret;}template<class T> auto sum(priority_queue<T, vector<T>, greater<T> > &r) {    auto q = r;    T ret = 0;    while (sz(q)) {        ret += q.top();        q.pop();    }    return ret;}template<class T> auto sum(priority_queue<T> &r) {    auto q = r;    T ret = 0;    while (sz(q)) {        ret += q.top();        q.pop();    }    return ret;}

//template<class T, class U, class... W>  auto sumn(vector<T> &v, U head, W... tail) {    auto ret = sum(v[0], tail...);    rep(i, 1, min(sz(v), head))ret += sum(v[i], tail...);    return ret;}

vi v_i(vi &a) {    int n = max(a) + 1;    vi ret(n, -1);    rep(i, sz(a)) {        ret[a[i]] = i;    }    return ret;}

void clear(PQ &q) { q = PQ(); }

template<class T> void clear(queue<T> &q) { while (q.size())q.pop(); }

template<class T> T *negarr(ll size) {    T *body = (T *) malloc((size * 2 + 1) * sizeof(T));    return body + size;}

template<class T> T *negarr2(ll h, ll w) {    double **dummy1 = new double *[2 * h + 1];    double *dummy2 = new double[(2 * h + 1) * (2 * w + 1)];    dummy1[0] = dummy2 + w;    for (ll i = 1; i <= 2 * h + 1; ++i) { dummy1[i] = dummy1[i - 1] + 2 * w + 1; }    double **a = dummy1 + h;    return a;}

//imoは0-indexed

//ruiは1-indexed

template<class T> vector<T> imo(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)ret[i + 1] += ret[i];    return ret;}

//kと同じものの数

template<class T, class U> vi imo(vector<T> &a, U k) {vector<T> ret = a;rep(i, sz(ret))ret[i] = a[i] == k;rep(i, sz(ret) - 1)ret[i + 1] += ret[i];return ret;}

template<class T> vector<T> imox(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)ret[i + 1] ^= ret[i];    return ret;}

//漸化的に最小を持つ

template<class T> vector<T> imi(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)chmi(ret[i + 1], ret[i]);    return ret;}

template<class T> struct ruiC {    const vector<T> rui;    ruiC(vector<T> &ru) : rui(ru) {}    T operator()(ll l, ll r) {        if (l > r) {            cerr<<"ruic ";deb(l, r);assert(0);        }        return rui[r] - rui[l];    }    T operator[](ll i) { return rui[i]; }    T back() { return rui.back(); }    ll size() { return rui.size(); }};

template<class T> struct rruic {    const T *rrui;    rruic(T *ru) : rrui(ru) {}     T operator()(ll l, ll r) {        assert(l >= r);        return rrui[r] - rrui[l];    }     T operator[](ll i) { return rrui[i]; }};

template<class T>ostream &operator<<(ostream &os, ruiC<T> a) {fora(v,a.rui)os<<v<<" ";return os;}

template<class T> vector<T> ruiv(vector<T> &a) {    vector<T> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + a[i];    return ret;}

template<class T> ruiC<T> ruic(vector<T> &a) {    vector<T> ret = ruiv(a);    return ruiC<T>(ret);}

vector<ll> ruiv(string &a) {    if (sz(a) == 0)return vi(1);    ll dec = ('0' <= a[0] && a[0] <= '9') ? '0' : 0;    vector<ll> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + a[i] - dec;    return ret;}

ruiC<ll> ruic(string &a) {    vector<ll> ret = ruiv(a);    return ruiC<ll>(ret);}

//kと同じものの数

template<class T, class U> vi ruiv(T &a, U k) {    vi ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + (a[i] == k);    return ret;}

template<class T, class U> ruiC<ll> ruic(T &a, U k) {    vi ret = ruiv(a, k);    return ruiC<ll>(ret);}

//xor

template<class T> struct ruixC {    const vector<T> rui;    ruixC(vector<T> &ru) : rui(ru) {}    T operator()(ll l, ll r) {        if (l > r) {            cerr << "ruiXc ";            deb(l, r);            assert(0);        }        return rui[r] ^ rui[l];    }    T operator[](ll i) { return rui[i]; }    T back() { return rui.back(); }    ll size() { return rui.size(); }};

template<class T> vector<T> ruix(vector<T> &a) {    vector<T> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] ^ a[i];    return ret;}

template<class T> ruixC<ll> ruixc(vector<T>  &a) {vi ret = ruix(a);return ruixC<ll>(ret);}

template<class T> vector<T> ruim(vector<T> &a) {    vector<T> res(a.size() + 1, 1);    rep(i, a.size())res[i + 1] = res[i] * a[i];    return res;}

//漸化的に最小を1indexで持つ

template<class T> vector<T> ruimi(vector<T> &a) {    ll n = sz(a);    vector<T> ret(n + 1);    rep(i, 1, n) {        ret[i] = a[i - 1];        chmi(ret[i + 1], ret[i]);    }    return ret;}

//template<class T> T *rrui(vector<T> &a) {

//右から左にかけての半開区間 (-1 n-1]

template<class T> rruic<T> rrui(vector<T> &a) {    ll len = a.size();    T *body = (T *) malloc((len + 1) * sizeof(T));    T *res = body + 1;    rer(i, len - 1)res[i - 1] = res[i] + a[i];    return rruic<T>(res);}

//掛け算

template<class T> T *rruim(vector<T> &a) {    ll len = a.size();    T *body = (T *) malloc((len + 1) * sizeof(T));    T *res = body + 1;    res[len - 1] = 1;    rer(i, len - 1)res[i - 1] = res[i] * a[i];    return res;}

template<class T, class U> void inc(T &a, U v = 1) { a += v; }

template<class T, class U> void inc(vector<T> &a, U v = 1) { for (auto &u:a)inc(u, v); }

template<class T, class U> void dec(T &a, U v = 1) { a -= v; }

template<class T, class U> void dec(vector<T> &a, U v = 1) { for (auto &u :a)dec(u, v); }

template<class U> void dec(string &a, U v = 1) { for (auto &u :a)dec(u, v); }

template<class T> void dec(vector<T> &a) { for (auto &u :a)dec(u, 1); }

template<class T,class U> void dec(vector<T> &a,vector<U> &b) { for (auto &u :a)dec(u, 1);for (auto &u :b)dec(u, 1); }

template<class T,class U,class W> void dec(vector<T> &a,vector<U> &b,vector<W>&c ) { for (auto &u :a)dec(u, 1);for (auto &u :b)dec(u, 1);for (auto &u :c)dec(u, 1); }

bool ins(ll h, ll w, ll H, ll W) { return h >= 0 && w >= 0 && h < H && w < W; }

bool ins(ll l, ll v, ll r) { return l <= v && v < r; }

template<class T> bool ins(vector<T> &a, ll i, ll j = 0) { return ins(0, i, sz(a)) && ins(0, j, sz(a)); }

ll u(ll a) { return a < 0 ? 0 : a; }

template<class T> vector<T> u(const vector<T> &a) {    vector<T> ret = a;    fora(v, ret)v = u(v);    return ret;}

#define MIN(a) numeric_limits<a>::min()

#define MAX(a) numeric_limits<a>::max()



//添え字を返す

template<class F> ll goldd_l(ll left, ll right, F calc) {    double GRATIO = 1.6180339887498948482045868343656;    ll lm = left + (ll) ((right - left) / (GRATIO + 1.0));    ll rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));    ll fl = calc(lm);    ll fr = calc(rm);    while (right - left > 10) {        if (fl < fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + (ll) ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    ll minScore = MAX(ll);    ll resIndex = left;    for (ll i = left; i < right + 1; ++i) {        ll score = calc(i);        if (minScore > score) {            minScore = score;            resIndex = i;        }    }    return resIndex;}

template<class F> ll goldt_l(ll left, ll right, F calc) {        double GRATIO = 1.6180339887498948482045868343656;        ll lm = left + (ll) ((right - left) / (GRATIO + 1.0));        ll rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));        ll fl = calc(lm);        ll fr = calc(rm);        while (right - left > 10) {            if (fl > fr) {                right = rm;                rm = lm;                fr = fl;                lm = left + (ll) ((right - left) / (GRATIO + 1.0));                fl = calc(lm);            } else {                left = lm;                lm = rm;                fl = fr;                rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));                fr = calc(rm);            }        }    if (left > right) {        ll l = left;        left = right;        right = l;    }    ll maxScore = MIN(ll);    ll resIndex = left;    for (ll i = left; i < right + 1; ++i) {        ll score = calc(i);        if (maxScore < score) {            maxScore = score;            resIndex = i;        }    }    return resIndex;}

/*loopは200にすればおそらく大丈夫 余裕なら300に*/

template<class F> dou goldd_d(dou left, dou right, F calc, ll loop = 200) {    dou GRATIO = 1.6180339887498948482045868343656;    dou lm = left + ((right - left) / (GRATIO + 1.0));    dou rm = lm + ((right - lm) / (GRATIO + 1.0));    dou fl = calc(lm);    dou fr = calc(rm);    /*200にすればおそらく大丈夫*/    /*余裕なら300に*/    ll k = 141;    loop++;    while (--loop) {        if (fl < fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    return left;}

template<class F> dou goldt_d(dou left, dou right, F calc, ll loop = 200) {    double GRATIO = 1.6180339887498948482045868343656;    dou lm = left + ((right - left) / (GRATIO + 1.0));    dou rm = lm + ((right - lm) / (GRATIO + 1.0));    dou fl = calc(lm);    dou fr = calc(rm);    loop++;    while (--loop) {        if (fl > fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    return left;}

//l ~ rを複数の区間に分割し、極致を与えるiを返す time-20 msまで探索

template<class F> ll goldd_ls(ll l, ll r, F calc, ll time = 2000) {    auto lim = milliseconds(time - 20);    ll mini = 0, minv = MAX(ll);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        ll haba = (r - l + k) / k;/*((r-l+1) + k-1) /k*/        ll nl = l;        ll nr = l + haba;        rep(i, k) {            ll ni = goldd_l(nl, nr, calc);            if (chmi(minv, calc(ni))) mini = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return mini;}

template<class F> ll goldt_ls(ll l, ll r, F calc, ll time = 2000) {    auto lim = milliseconds(time - 20);    ll maxi = 0, maxv = MIN(ll);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        ll haba = (r - l + k) / k;/*((r-l+1) + k-1) /k*/        ll nl = l;        ll nr = l + haba;        rep(i, k) {            ll ni = goldt_l(nl, nr, calc);            if (chma(maxv, calc(ni))) maxi = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return maxi;}

template<class F> dou goldd_d_s(dou l, dou r, F calc, ll time = 2000) {    /*20ms余裕を持つ*/    auto lim = milliseconds(time - 20);    dou mini = 0, minv = MAX(dou);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        dou haba = (r - l) / k;        dou nl = l;        dou nr = l + haba;        rep(i, k) {            dou ni = goldd_d(nl, nr, calc);            if (chmi(minv, calc(ni))) mini = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return mini;}

template<class F> dou goldt_d_s(dou l, dou r, F calc, ll time = 2000) {    /*20ms余裕を残している*/    auto lim = milliseconds(time - 20);    dou maxi = 0, maxv = MIN(dou);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        dou haba = (r - l) / k;        dou nl = l;        dou nr = l + haba;        rep(i, k) {            dou ni = goldt_d(nl, nr, calc);            if (chma(maxv, calc(ni))) maxi = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return maxi;}

template<class T> T min(vector<vector<T >> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, *min_element(all(a[i])));    return res;}

template<class T> T max(vector<vector<T >> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, *max_element(all(a[i])));    return res;}

constexpr bool bget(ll m, ll keta) {

    #ifdef _DEBUG

        assert(keta<=62);//オーバーフロー 1^62までしか扱えない

    #endif

    return (m >> keta) & 1; }

ll bget(ll m, ll keta, ll sinsuu) {    m /= (ll) pow(sinsuu, keta);    return m % sinsuu;}

constexpr ll bit(ll n) {

    #ifdef _DEBUG

        assert(n<=62);//オーバーフロー 1^62までしか扱えない

    #endif

    return (1LL << (n)); }

ll bit(ll n, ll sinsuu) { return (ll) pow(sinsuu, n); }

ll mask(ll n) { return (1ll << n) - 1; }

//aをbitに置きなおす

ll bit(vi&a){    int m=0;    for(auto&& v:a) m|=bit(v);    return m;}

#define bcou __builtin_popcountll

//最下位ビット

ll lbit(ll n) { return n & -n; }

ll lbiti(ll n) { return log2(n & -n); }

//最上位ビット

ll hbit(ll n) {    n |= (n >> 1);    n |= (n >> 2);    n |= (n >> 4);    n |= (n >> 8);    n |= (n >> 16);    n |= (n >> 32);    return n - (n >> 1);}

ll hbiti(ll n){return log2(hbit(n));}

ll hbitk(ll n) {    ll k = 0;    rer(i, 5) {        ll a = k + (1ll << i);        ll b = 1ll << a;        if (b <= n)k += 1ll << i;    }    return k;}

//初期化は0を渡す

ll nextComb(ll &mask, ll n, ll r) {    if (!mask)return mask = (1LL << r) - 1;    ll x = mask & -mask; /*最下位の1*/    ll y = mask + x; /*連続した下の1を繰り上がらせる*/    ll res = ((mask & ~y) / x >> 1) | y;    if (bget(res, n))return mask = 0; else return mask = res;}

//n桁以下でビットがr個立っているもののvectorを返す

vi bitCombList(ll n, ll r) {    vi res;    ll m = 0;    while (nextComb(m, n, r)) { res.push_back(m); }    return res;}

//masの立ってるindexを見る

#define forbit(i, mas) for (int forbitj = lbit(mas), forbitm = mas, i = log2(forbitj); forbitm; forbitm = forbitj ? forbitm ^ forbitj : 0, forbitj = lbit(forbitm), i = log2(forbitj))



char itoal(ll i) { return 'a' + i; }

char itoaL(ll i) { return 'A' + i; }

ll altoi(char c) {    if ('A' <= c && c <= 'Z')return c - 'A';    return c - 'a';}

ll ctoi(char c) { return c - '0'; }

char itoc(ll i) { return i + '0'; }

ll vtoi(vi &v) {    ll res = 0;    if (sz(v) > 18) {        debugline("vtoi");        deb(sz(v));        ole();    }    rep(i, sz(v)) {        res *= 10;        res += v[i];    }    return res;}

vi itov(ll i) {    vi res;    while (i) {        res.push_back(i % 10);        i /= 10;    }    rev(res);    return res;}

vi stov(string &a) {    ll n = sz(a);    vi ret(n);    rep(i, n) { ret[i] = a[i] - '0'; }    return ret;}

//基準を満たさないものは0になる

vi stov(string &a, char one) {    ll n = sz(a);    vi ret(n);    rep(i, n)ret[i] = a[i] == one;    return ret;}

vector<vector<ll>> ctoi(vector<vector<char>> s, char c) {    ll n = sz(s), m = sz(s[0]);    vector<vector<ll>> res(n, vector<ll>(m));    rep(i, n)rep(j, m)res[i][j] = s[i][j] == c;    return res;}

#define unique(v) v.erase( unique(v.begin(), v.end()), v.end() );

//[i] := vを返す

//aは0~n-1で置き換えられる

vi compress(vi &a) {    vi b;    ll len = a.size();    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) { a[i] = lower_bound(all(b), a[i]) - b.begin(); }    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, umap<ll, ll> &map) {    vi b;    ll len = a.size();    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) {        ll v = a[i];        a[i] = lower_bound(all(b), a[i]) - b.begin();        map[v] = a[i];    }    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, vi &r) {    vi b;    ll len = a.size();    fora(v, a)b.push_back(v);    fora(v, r)b.push_back(v);    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) a[i] = lower_bound(all(b), a[i]) - b.begin();    for (ll i = 0; i < sz(r); ++i) r[i] = lower_bound(all(b), r[i]) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, vi &r, vi &s) {    vi b;    ll len = a.size();    fora(v, a)b.push_back(v);    fora(v, r)b.push_back(v);    fora(v, s)b.push_back(v);    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) a[i] = lower_bound(all(b), a[i]) - b.begin();    for (ll i = 0; i < sz(r); ++i) r[i] = lower_bound(all(b), r[i]) - b.begin();    for (ll i = 0; i < sz(s); ++i) r[i] = lower_bound(all(b), s[i]) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vector<vi> &a) {    vi b;    fora(vv, a)fora(v, vv)b.push_back(v);    sort(b);    unique(b);    fora(vv, a)fora(v, vv)v = lower_bound(all(b), v) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vector<vector<vi >> &a) {    vi b;    fora(vvv, a)fora(vv, vvv)fora(v, vv)b.push_back(v);    sort(b);    unique(b);    fora(vvv, a)fora(vv, vvv)fora(v, vv)v = lower_bound(all(b), v) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

void compress(ll a[], ll len) {    vi b;    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) { a[i] = lower_bound(all(b), a[i]) - b.begin(); }}

//要素が見つからなかったときに困る

#define binarySearch(a, v) (binary_search(all(a),v))

#define lowerIndex(a, v) (lower_bound(all(a),v)-a.begin())

#define lowerBound(a, v) (*lower_bound(all(a),v))

#define upperIndex(a, v) (upper_bound(all(a),v)-a.begin())

#define upperBound(a, v) (*upper_bound(all(a),v))

#define rlowerIndex(a, v) (upper_bound(all(a),v)-a.begin()-1)

#define rlowerBound(a, v) *(--(upper_bound(all(a),v)))

#define rupperIndex(a, v) (lower_bound(all(a),v)-a.begin()-1)

#define rupperBound(a, v) *(--(lower_bound(all(a),v)))

#define next2(a) next(next(a))

#define prev2(a) prev(prev(a))



//狭義の単調増加列 長さを返す

template<class T> int lis(vector<T> &a) {    int n = sz(a);    vi tail(n + 1, MAX(T));    rep(i, n) {        int id = lowerIndex(tail, a[i]);/**/        tail[id] = a[i];    }    return lowerIndex(tail, MAX(T));}

template<class T> int lis_eq(vector<T> &a) {    int n = sz(a);    vi tail(n + 1, MAX(T));    rep(i, n) {        int id = upperIndex(tail, a[i]);/**/        tail[id] = a[i];    }    return lowerIndex(tail, MAX(T));}



//iteratorを返す

//valueが1以上の物を返す 0は見つけ次第削除

//vを減らす場合 (*it).se--でいい

template<class T, class U, class V> auto lower_map(map<T, U> &m, V k) {    auto ret = m.lower_bound(k);    while (ret != m.end() && (*ret).second == 0) {        ret = m.erase(ret);    }    return ret;}

template<class T, class U, class V> auto upper_map(map<T, U> &m, V k) {    auto ret = m.upper_bound(k);    while (ret != m.end() && (*ret).second == 0) {        ret = m.erase(ret);    }    return ret;}

//存在しなければエラー

template<class T, class U, class V> auto rlower_map(map<T, U> &m, V k) {    auto ret = upper_map(m, k);    assert(ret != m.begin());    ret--;    while (1) {        if ((*ret).second != 0)break;        assert(ret != m.begin());        auto next = ret;        --next;        m.erase(ret);        ret = next;    }    return ret;}

template<class T, class U, class V> auto rupper_map(map<T, U> &m, V k) {    auto ret = lower_map(m, k);    assert(ret != m.begin());    ret--;    while (1) {        if ((*ret).second != 0)break;        assert(ret != m.begin());        auto next = ret;        --next;        m.erase(ret);        ret = next;    }    return ret;}



template<class T> void fin(T s) { cout << s << endl, exit(0); }



//便利 数学 math

ll mod(ll a, ll m) { return (a % m + m) % m; }

ll pow(ll a) { return a * a; };

ll fact(ll v) { return v <= 1 ? 1 : v * fact(v - 1); }

dou factd(int v){static vd fact(2,1);    if(sz(fact)<=v){        rep(i,sz(fact),v+1){            fact.push_back(fact.back()*i);        }    }    return fact[v];}



ll comi(ll n, ll r) {    assert(n < 100);    static vvi(pas, 100, 100);    if (pas[0][0])return pas[n][r];    pas[0][0] = 1;    rep(i, 1, 100) {        pas[i][0] = 1;        rep(j, 1, i + 1)pas[i][j] = pas[i - 1][j - 1] + pas[i - 1][j];    }    return pas[n][r];}

double comd2(ll n, ll r) {    static vvd(comb, 2020, 2020);    if (comb[0][0] == 0) {        comb[0][0] = 1;        rep(i, 2000) {            comb[i + 1][0] = 1;            rep(j, 1, i + 2) { comb[i + 1][j] = comb[i][j] + comb[i][j - 1]; }        }    }    return comb[n][r];}

double comd(int n, int r) {    if (r < 0 || r > n) return 0;    if (n < 2020)return comd2(n, r);    static vd fact(2, 1);    if (sz(fact) <= n) { rep(i, sz(fact), n + 1) { fact.push_back(fact.back() * i); }}    return fact[n] / fact[n - r] / fact[r];}



ll gcd(ll a, ll b) {while (b) a %= b, swap(a, b);return abs(a);}

ll gcd(vi b) {ll res = b[0];rep(i, 1, sz(b))res = gcd(b[i], res);return res;}

ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }

ll lcm(vi a) {ll res = a[0];rep(i, 1, sz(a))res = lcm(a[i], res);return res;}

ll ceil(ll a, ll b) {if (b == 0) {debugline("ceil");deb(a, b);ole();return -1;} else if (a < 0) { return 0; } else { return (a + b - 1) / b; }}

ll lower_remi__bx_a(ll kei, ll rem, ll x) {if (rem >= x) return 0;return (x - rem + kei - 1) / kei;}

ll lower_remv__bx_a(ll kei, ll rem, ll x) {if (rem >= x) return rem;return (x - rem + kei - 1) / kei * kei + rem;}

ll upper_remi__bx_a(ll kei, ll rem, ll x) {if (rem > x) return 0;return (x - rem + kei) / kei;}

ll upper_remv__bx_a(ll kei, ll rem, ll x) {if (rem > x) return rem;return (x - rem + kei) / kei * kei + rem;}

//v * v >= aとなる最小のvを返す

ll sqrt(ll a) {if (a < 0) {debugline("sqrt");deb(a);ole();}ll res = (ll) std::sqrt(a);while (res * res < a)++res;return res;}

double log(double e, double x) { return log(x) / log(e); }

ll sig(ll t) { return ((1 + t) * t) >> 1; }

ll sig(ll s, ll t) { return ((s + t) * (t - s + 1)) >> 1; }





//機能拡張

constexpr int bsetlen = k5*2;

#define bset bitset<bsetlen>

bool operator<(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] < b[i])return true;if (a[i] > b[i])return false;}return false;}

bool operator>(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] > b[i])return true;if (a[i] < b[i])return false;}return false;}

bool operator<=(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] < b[i])return true;if (a[i] > b[i])return false;}return true;}

bool operator>=(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] > b[i])return true;if (a[i] < b[i])return false;}return true;}

string operator~(string &a) {string res = a;for (auto &&c:res) {if (c == '0')c = '1';else if (c == '1')c = '0';else {cerr << "cant ~" << a << "must bit" << endl;exit(0);}}return res;}



template<class T, class U> void operator+=(pair<T,U> &a, pair<T,U> & b) {a.fi+=b.fi;a.se+=b.se;}

template<class T, class U> pair<T,U> operator+(pair<T,U> &a, pair<T,U> & b) {return pair<T,U>(a.fi+b.fi,a.se+b.se);}



template<typename CharT, typename Traits, typename Alloc>basic_string<CharT, Traits, Alloc>operator+(const basic_string<CharT, Traits, Alloc> &lhs, const int rv) {    basic_string<CharT, Traits, Alloc> str(lhs);    str.append(to_string(rv));    return str;}template<typename CharT, typename Traits, typename Alloc>void operator+=(basic_string<CharT, Traits, Alloc> &lhs, const int rv) {    lhs += to_string(rv);}template<typename CharT, typename Traits, typename Alloc>basic_string<CharT, Traits, Alloc>operator+(const basic_string<CharT, Traits, Alloc> &lhs, const signed rv) {    basic_string<CharT, Traits, Alloc> str(lhs);    str.append(to_string(rv));    return str;}template<typename CharT, typename Traits, typename Alloc>void operator+=(basic_string<CharT, Traits, Alloc> &lhs, const signed rv) {    lhs += to_string(rv);}

template<typename CharT, typename Traits, typename Alloc> void operator*=(basic_string<CharT, Traits, Alloc> &s, int num) {auto bek = s;s = "";for (; num; num >>= 1) {if (num & 1) {s += bek;}bek += bek;}}

template<class T, class U> void operator+=(queue<T> &a, U v) { a.push(v); }template<class T, class U> void operator+=(deque<T> &a, U v) { a.push_back(v); }template<class T> priority_queue<T, vector<T>, greater<T> > &operator+=(priority_queue<T, vector<T>, greater<T> > &a, vector <T> &v) {    fora(d, v)a.push(d);    return a;}template<class T, class U> priority_queue<T, vector<T>, greater<T> > &operator+=(priority_queue<T, vector<T>, greater<T> > &a, U v) {    a.push(v);    return a;}template<class T, class U> priority_queue<T> &operator+=(priority_queue<T> &a, U v) {    a.push(v);    return a;}template<class T> set<T> &operator+=(set<T> &a, vector <T> v) {    fora(d, v)a.insert(d);    return a;}template<class T, class U> auto operator+=(set<T> &a, U v) { return a.insert(v); }template<class T, class U> auto operator-=(set<T> &a, U v) { return a.erase(v); }template<class T, class U> auto operator+=(mset<T> &a, U v) { return a.insert(v); }template<class T, class U> set<T, greater<T>> &operator+=(set<T, greater<T>> &a, U v) {    a.insert(v);    return a;}template<class T, class U> vector<T> &operator+=(vector<T> &a, U v) {    a.push_back(v);    return a;}template<class T, class U> vector<T> operator+(const vector <T> &a, U v) {    vector<T> ret = a;    ret += v;    return ret;}template<class T, class U> vector<T> operator+(U v, const vector <T> &a) {    vector<T> ret = a;    ret.insert(ret.begin(), v);    return ret;}template<class T> vector<T> operator+(vector<T> a, vector <T> b) {    vector<T> ret;    ret = a;    fora(v, b)ret += v;    return ret;}template<class T> vector<T> &operator+=(vector<T> &a, vector <T> &b) {    rep(i, sz(b)) {/*こうしないとa+=aで両辺が増え続けてバグる*/        a.push_back(b[i]); }    return a;}

template<class T> vector<T> &operator-=(vector<T> &a, vector <T> &b) {    if (sz(a) != sz(b)) {        debugline("vector<T> operator-=");        deb(a);        deb(b);        exit(0);    }    rep(i, sz(a))a[i] -= b[i];    return a;}

template<class T> vector<T> operator-(vector<T> &a, vector<T> &b) {    if (sz(a) != sz(b)) {        debugline("vector<T> operator-");        deb(a);        deb(b);        ole();    }    vector<T> res(sz(a));    rep(i, sz(a))res[i] = a[i] - b[i];    return res;}

template<class T, class U> void operator*=(vector<T> &a, U b) {    vector<T> ta = a;    rep(b-1){        a+=ta;    }}

template<typename T> void erase(vector<T> &v, unsigned ll i) { v.erase(v.begin() + i); }

template<typename T> void erase(vector<T> &v, unsigned ll s, unsigned ll e) { v.erase(v.begin() + s, v.begin() + e); }

template<class T, class U> void erase(map<T, U> &m, ll okl, ll ngr) { m.erase(m.lower_bound(okl), m.lower_bound(ngr)); }

template<class T> void erase(set<T> &m, ll okl, ll ngr) { m.erase(m.lower_bound(okl), m.lower_bound(ngr)); }

template<typename T> void erasen(vector<T> &v, unsigned ll s, unsigned ll n) { v.erase(v.begin() + s, v.begin() + s + n); }

template<typename T, typename U> void insert(vector<T> &v, unsigned ll i, U t) { v.insert(v.begin() + i, t); }

template<typename T, typename U> void push_front(vector<T> &v, U t) { v.insert(v.begin(), t); }

template<typename T, typename U> void insert(vector<T> &v, unsigned ll i, vector<T> list) { for (auto &&va:list)v.insert(v.begin() + i++, va); }

template<typename T> void insert(set<T> &v, vector<T> list) { for (auto &&va :list)v.insert(va); }

vector<string> split(const string a, const char deli) {    string b = a + deli;    ll l = 0, r = 0, n = b.size();    vector<string> res;    rep(i, n) {        if (b[i] == deli) {            r = i;            if (l < r)res.push_back(b.substr(l, r - l));            l = i + 1;        }    }    return res;}

vector<string> split(const string a, const string deli) {    vector<string> res;    ll kn = sz(deli);    std::string::size_type Pos(a.find(deli));    ll l = 0;    while (Pos != std::string::npos) {        if (Pos - l)res.push_back(a.substr(l, Pos - l));        l = Pos + kn;        Pos = a.find(deli, Pos + kn);    }    if (sz(a) - l)res.push_back(a.substr(l, sz(a) - l));    return res;}

void yn(bool a) { if (a)cout << "yes" << endl; else cout << "no" << endl; }

void Yn(bool a) { if (a)cout << "Yes" << endl; else cout << "No" << endl; }

void YN(bool a) { if (a)cout << "YES" << endl; else cout << "NO" << endl; }

void fyn(bool a) {    if (a)cout << "yes" << endl; else cout << "no" << endl;    exit(0);}

void fYn(bool a) {    if (a)cout << "Yes" << endl; else cout << "No" << endl;    exit(0);}

void fYN(bool a) {    if (a)cout << "YES" << endl; else cout << "NO" << endl;    exit(0);}

void Possible(bool a) {    if (a)cout << "Possible" << endl; else cout << "Impossible" << endl;    exit(0);}

void POSSIBLE(bool a) {    if (a)cout << "POSSIBLE" << endl; else cout << "IMPOSSIBLE" << endl;    exit(0);}

template<typename T> class fixed_point        : T {public:    explicit constexpr fixed_point(T &&t) noexcept: T(std::forward<T>(t)) {}    template<typename... Args> constexpr decltype(auto) operator()(Args &&... args) const { return T::operator()(*this, std::forward<Args>(args)...); }};template<typename T> static inline constexpr decltype(auto) fix(T &&t) noexcept { return fixed_point<T>{std::forward<T>(t)}; }





//@起動時

struct initon {

    initon() {

        cin.tie(0);

        ios::sync_with_stdio(false);

        cout.setf(ios::fixed);

        cout.precision(16);

        srand((unsigned) clock() + (unsigned) time(NULL));

    };

} initonv;//@formatter:on



//gra mll pr

//上下左右

const string udlr = "udlr";

string UDLR = "UDLR";//x4と連動 UDLR.find('U') := x4[0]

//右、上が正

constexpr ll y4[] = {1, -1, 0, 0};

constexpr ll x4[] = {0, 0, -1, 1};

constexpr ll y8[] = {0, 1, 0, -1, -1, 1, 1, -1};

constexpr ll x8[] = {1, 0, -1, 0, 1, -1, 1, -1};

//ll k, K, d, x, y, z, q, Q,cou;vvi (s, 0, 0);



//ll n, m, k, H, W;

//vi a, b;

//vvc (ba, 0, 0);



ll N, M, H, W;

vi A, B, C;





void solve() {

    in(N, M);

    vi v(M);

    vi s(M);

    rep(i, M) {

        int num;

        in(v[i], num);

        dnad(tv, num);

        s[i] = bit(tv);

    }

    vi dp(bit(20), linf);

    dp[0] = 0;

    rep(mk, bit(14)){

        if(dp[mk]==linf)con;

        rep(i, M){

            chmi(dp[mk | s[i]],dp[mk]+ v[i]);

        }

    }

    deb(dp);

    if(dp[mask(N)]==linf)dp[mask(N)]=-1;

    cout << dp[mask(N)] << endl;

}



auto my(ll n, vi &a) {

    return 0;

}



auto sister(ll n, vi &a) {

    ll ret = 0;

    return ret;

}



signed main() {

    solve();



#define arg n,a

#ifdef _DEBUG

    bool bad = 0;

    for (ll i = 0, ok = 1; i < k5 && ok; ++i) {

        ll n = rand(1, 8);

        vi a = ranv(n, 1, 10);

        auto myres = my(arg);

        auto res = sister(arg);

        ok = myres == res;

        if (!ok) {

            out(arg);

            cerr << "AC : " << res << endl;

            cerr << "MY  : " << myres << endl;

            bad = 1;





            break;

        }

    }

    if (!bad) {

//        cout << "完璧 : solveを書き直そう" << endl;

//        cout << "     : そして、solve()を呼び出すのだ" << endl;

//        cout << "     : cin>>n; na(a,n);も忘れるな" << endl;

    }

#endif

    return 0;

};


// Optimized solution to the same problem (faster):
//#undef _DEBUG

//#pragma GCC optimize("Ofast")

//不動小数点の計算高速化

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>

#include <ext/pb_ds/tree_policy.hpp>

using namespace std;

using namespace std::chrono;

#define int long long //todo 消したら動かない intの代わりにsignedを使う

#define ll long long

auto start_time = system_clock::now();

auto past_time = system_clock::now();



#define debugName(VariableName) # VariableName

//最大引数がN

#define over2(o1, o2, name, ...) name

#define over3(o1, o2, o3, name, ...) name

#define over4(o1, o2, o3, o4, name, ...) name

#define over5(o1, o2, o3, o4, o5, name, ...) name

#define over6(o1, o2, o3, o4, o5, o6, name, ...) name

#define over7(o1, o2, o3, o4, o5, o6, o7, name, ...) name

#define over8(o1, o2, o3, o4, o5, o6, o7, o8, name, ...) name

#define over9(o1, o2, o3, o4, o5, o6, o7, o8, o9, name, ...) name

#define over10(o1, o2, o3, o4, o5, o6, o7, o8, o9, o10, name, ...) name





/*@formatter:off*/

//[-n, n)にアクセスできる

//また、外部関数resizeに渡せる

//sizeは[-n, n)でnを返す

template<class T> class mvec {    vector<T> v;    int n;public:    mvec() : n(0), v(0) {}    mvec(int n) : n(n), v(n * 2) {}    mvec(int n, T val) : n(n), v(n * 2, val) {}    auto &operator[](int i) { return v[i + n]; }    auto size() { return n; }    void resize(int sn) {        assert(n == 0);        n = sn;        v.resize(sn * 2);    }    auto begin() { return v.begin(); }    auto rbegin() { return v.rbegin(); }    auto end() { return v.end(); }    auto rend() { return v.rend(); }};

//[]でboolは参照を返さないため特殊化が必要

template<> struct mvec<bool> {    vector<bool> v;    int n;    mvec() : n(0), v(0) {}    mvec(int n) : n(n), v(n * 2) {}    mvec(int n, bool val) : n(n), v(n * 2, val) {}    auto operator[](int i) { return v[i + n]; }    auto size() { return v.size(); }    void resize(int sn) {        assert(n == 0);        n = sn;        v.resize(sn * 2);    }    auto begin() { return v.begin(); }    auto rbegin() { return v.rbegin(); }    auto end() { return v.end(); }    auto rend() { return v.rend(); }};

template<class T>ostream &operator<<(ostream &os, mvec<T>& a) {    int spa = 3;    for(auto&&v : a){        spa = max(spa,(int)(to_string(v).size())+1);    }    int n = (int)a.size();    os<<endl;    for (int i = -n; i < n; i++){        int need = spa - ((int)to_string(i).size());        if(i==-n){            need -= min(need,spa - ((int)to_string(a[i]).size()));        }        while(need--){            os<<" ";        }        os<<i;    }    os<<endl;    int i=-n;    for(auto&&v : a){        int need = spa - ((int)to_string(v).size());        if(i==-n){            need -= min(need,spa - ((int)to_string(i).size()));        }        while(need--){            os<<" ";        }        os<<v;        i++;    }    return os;}

#define mv mvec

#define MV mvec

using mvi = mvec<ll>;

using mvb = mvec<bool>;

using mvs = mvec<string>;

using mvd = mvec<double>;

using mvc = mvec<char>;



#define mvvt0(t) mvec<mvec<t>>

#define mvvt1(t,a) mvec<mvec<t>>a

#define mvvt2(t,a, b) mvec<mvec<t>>a(b)

#define mvvt3(t,a, b, c) mvec<mvec<t>> a(b,mvec<t>(c))

#define mvvt4(t,a, b, c, d) mvec<mvec<t>> a(b,mvec<t>(c,d))

#define mvvi(...) over4(__VA_ARGS__,mvvt4,mvvt3,mvvt2 ,mvvt1,mvvt0)(ll,__VA_ARGS__)



template<typename T> mvec<T> make_mv(size_t a) { return mvec<T>(a); }

template<typename T, typename... Ts> auto make_mv(size_t a, Ts... ts) {return mvec<decltype(make_mv<T>(ts...))>(a, make_mv<T>(ts...));}

#define mvni(name, ...) auto name = make_mv<ll>(__VA_ARGS__)





#ifdef _DEBUG

string message;

//https://marycore.jp/prog/cpp/class-extension-methods/ 違うかも

template<class T, class A = std::allocator<T>> struct debtor : std::vector<T, A> {

    using std::vector<T, A>::vector;

    template<class U> int deb_v(U a, int v) { return v; }

    template<class U> int deb_v(debtor<U> &a, int v = 0) {cerr << a.size() << " ";return deb_v(a.at(0), v + 1);}

    template<class U> void deb_o(U a) { cerr << a << " "; }

    template<class U> void deb_o(debtor<U> &a) {for (int i = 0; i < min((int) a.size(), 15ll); i++) { deb_o(a[i]); }if ((int) a.size() > 15) { cerr << "..."; }cerr << endl;}

    typename std::vector<T>::reference operator[](typename std::vector<T>::size_type n) {        if (n < 0 || n >= (int) this->size()) {            int siz = (int) this->size();            cerr << "vector size = ";            int dim = deb_v((*this));            cerr << endl;            cerr << "out index at  " << n << endl;            cerr << endl;            if (dim <= 2) { deb_o((*this)); }            exit(0);        }return this->at(n);}

};

//#define vector debtor

//区間削除は出来ない

template<class T> struct my_pbds_tree {    set<T> s;    auto begin() { return s.begin(); }    auto end() { return s.end(); }    auto rbegin() { return s.rbegin(); }    auto rend() { return s.rend(); }    auto empty() { return s.empty(); }    auto size() { return s.size(); }    void clear() { s.clear(); }    template<class U> void insert(U v) { s.insert(v); }template<class U> void operator+=(U v) { insert(v); }    template<class F> auto erase(F v) { return s.erase(v); }    template<class U> auto find(U v) { return s.find(v); }    template<class U> auto lower_bound(U v) { return s.lower_bound(v); }    template<class U> auto upper_bound(U v) { return s.upper_bound(v); }    auto find_by_order(ll k) {        auto it = s.begin();        for (ll i = 0; i < k; i++)it++;        return it;    }    auto order_of_key(ll v) {        auto it = s.begin();        ll i=0;        for (;it != s.end() && *it <v ; i++)it++;        return i;    }};

#define pbds(T) my_pbds_tree<T>

//gp_hash_tableでcountを使えないようにするため

template<class T,class U> struct my_unordered_map{    unordered_map<T,U> m;    my_unordered_map(){};    auto begin(){        return m.begin();    }    auto end(){return m.end();}    auto cbegin(){return m.cbegin();}    auto cend(){return m.cend();}    template<class V>auto erase(V v){return m.erase(v);}    void clear(){m.clear();}    /*countは gp_hash_tableに存在しない*/    /*!= m.end()*/    template<class V>auto find(V v){return m.find(v);}    template<class V>auto & operator [](V n) { return m[n] ;}};

#define unordered_map my_unordered_map

#define umapi unordered_map<ll,ll>

#define umapp unordered_map<P,ll>

#define umapu unordered_map<uint64_t,ll>

#define umapip unordered_map<ll,P>



#else

#define endl '\n'

//umapはunorderd_mapになる

//umapiはgp_hash_table



//find_by_order(k) k番目のイテレーター

//order_of_key(k)  k以上が前から何番目か

#define pbds(U) __gnu_pbds::tree<U, __gnu_pbds::null_type, less<U>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>



#define umapi __gnu_pbds::gp_hash_table<ll,ll,xorshift>

#define umapp __gnu_pbds::gp_hash_table<P,ll,xorshift>

#define umapu __gnu_pbds::gp_hash_table<uint64_t,ll,xorshift>

#define umapip __gnu_pbds::gp_hash_table<ll,P,xorshift>



#endif

/*@formatter:on*/

struct xorshift {

    static uint64_t splitmix64(uint64_t x) {

        x += 0x9e3779b97f4a7c15;

        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;

        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;

        return x ^ (x >> 31);

    }

    size_t operator()(uint64_t x) const {

        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();

        return splitmix64(x + FIXED_RANDOM);

    }

    size_t operator()(std::pair<ll, ll> x) const {

        ll v = ((x.first) << 32) | x.second;

        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();

        return splitmix64(v + FIXED_RANDOM);

    }

};

/*@formatter:off*/

template<class U, class L> void operator+=(__gnu_pbds::tree<U, __gnu_pbds::null_type, less<U>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> &s, L v) { s.insert(v); }

//衝突対策

#define ws ws_



template<class A, class B, class C>struct T2 {A f;B s;C t;T2() { f = 0, s = 0, t = 0; }T2(A f, B s, C t) : f(f), s(s), t(t) {}bool operator<(const T2 &r) const {        return f != r.f ? f < r.f : s != r.s ? s < r.s : t < r.t;        /*return f != r.f ? f > r.f : s != r.s ?n s > r.s : t > r.t; 大きい順 */   }    bool operator>(const T2 &r) const {        return f != r.f ? f > r.f : s != r.s ? s > r.s : t > r.t;        /*return f != r.f ? f > r.f : s != r.s ? s > r.s : t > r.t; 小さい順 */   }    bool operator==(const T2 &r) const {        return f == r.f && s == r.s && t == r.t;    }    bool operator!=(const T2 &r) const {        return f != r.f || s != r.s || t != r.t;    }};

template<class A, class B, class C, class D> struct F2 {    A a;    B b;    C c;    D d;    F2() { a = 0, b = 0, c = 0, d = 0; }    F2(A a, B b, C c, D d) : a(a), b(b), c(c), d(d) {}    bool operator<(const F2 &r) const {        return a != r.a ? a < r.a : b != r.b ? b < r.b : c != r.c ? c < r.c : d < r.d;    /*    return a != r.a ? a > r.a : b != r.b ? b > r.b : c != r.c ? c > r.c : d > r.d;*/    }    bool operator>(const F2 &r) const {        return a != r.a ? a > r.a : b != r.b ? b > r.b : c != r.c ? c > r.c : d > r.d;/*        return a != r.a ? a < r.a : b != r.b ? b < r.b : c != r.c ? c < r.c : d < r.d;*/    }    bool operator==(const F2 &r) const {        return a == r.a && b == r.b && c == r.c && d == r.d;    }    bool operator!=(const F2 &r) const {        return a != r.a || b != r.b || c != r.c || d != r.d;    }    ll operator[](ll i) {        assert(i < 4);        return i == 0 ? a : i == 1 ? b : i == 2 ? c : d;    }};

typedef T2<ll, ll, ll> T;

typedef F2<ll, ll, ll, ll> F;

T mt(ll a, ll b, ll c) {return T(a, b, c);}

F mf(ll a, ll b, ll c, ll d) {return F(a, b, c, d);}







//@マクロ省略系 型,構造

#define double long double

using dou = double;

const double eps = 1e-9;

//基本コメントアウト

/*

struct epsdou {    double v;    epsdou(double v = 0) : v(v) {}    template<class T> epsdou &operator+=(T b) {        v += (double) b;        return (*this);    }    template<class T> epsdou &operator-=(T b) {        v -= (double) b;        return (*this);    }    template<class T> epsdou &operator*=(T b) {        v *= (double) b;        return (*this);    }    template<class T> epsdou &operator/=(T b) {        v /= (double) b;        return (*this);    }    epsdou operator+(epsdou b) { return v + (double) b; }    epsdou operator-(epsdou b) { return v - (double) b; }    epsdou operator*(epsdou b) { return v * (double) b; }    epsdou operator/(epsdou b) { return v / (double) b; }    epsdou operator-() const { return epsdou(-v); }    template<class T> bool operator<(T b) { return v < (double) b; }    template<class T> bool operator>(T b) { return v > (double) b; }    template<class T> bool operator==(T b) { return fabs(v - (double) b) <= eps; }    template<class T> bool operator<=(T b) { return v < (double) b || fabs(v - b) <= eps; }    template<class T> bool operator>=(T b) { return v > (double) b || fabs(v - b) <= eps; }    operator double() { return v; }};istream &operator>>(istream &iss, epsdou &a) {    iss >> a.v;    return iss;}ostream &operator<<(ostream &os, epsdou &a) {    os << a.v;    return os;}

#define eps_conr_t(o) template<class T> epsdou operator o(T b, epsdou a){return a.v o (dou)b;}

#define eps_conl_t(o) template<class T> epsdou operator o(epsdou a, T b){return a.v o (dou)b;}

eps_conl_t(+)eps_conl_t(-)eps_conl_t(*)eps_conl_t(/)eps_conr_t(+)eps_conr_t(-)eps_conr_t(*)eps_conr_t(/)

#undef double

#define double epsdou

*/



#define ull unsigned long long

using itn = int;

using str = string;

using bo= bool;

#define au auto

using P = pair<ll, ll>;

using mvp = mvec<P>;

using mvt = mvec<T>;

#define MIN(a) numeric_limits<a>::min()

#define MAX(a) numeric_limits<a>::max()



#define fi first

#define se second

#define beg begin

#define rbeg rbegin

#define con continue

#define bre break

#define brk break

#define is ==

#define el else

#define elf else if

#define upd update

#define sstream stringstream



#define maxq 1

#define minq -1



#define ZERO(a) memset(a,0,sizeof(a))

#define MINUS(a) memset(a,0xff,sizeof(a))

#define MALLOC(type, len) (type*)malloc((len) * sizeof(type))

#define lam1(ret) [&](auto& v){return ret;}

#define lam2(v, ret) [&](auto& v){return ret;}

#define lam(...) over2(__VA_ARGS__,lam2,lam1)(__VA_ARGS__)

#define lamr(right) [&](auto& p){return p right;}



//マクロ省略系 コンテナ

using vi = vector<ll>;

using vb = vector<bool>;

using vs = vector<string>;

using vd = vector<double>;

using vc = vector<char>;

using vp = vector<P>;

using vt = vector<T>;



//#define V vector

#define vvt0(t) vector<vector<t>>

#define vvt1(t,a) vector<vector<t>>a

#define vvt2(t,a, b) vector<vector<t>>a(b)

#define vvt3(t,a, b, c) vector<vector<t>> a(b,vector<t>(c))

#define vvt4(t,a, b, c, d) vector<vector<t>> a(b,vector<t>(c,d))



#define vvi(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(ll,__VA_ARGS__)

#define vvb(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(bool,__VA_ARGS__)

#define vvs(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(string,__VA_ARGS__)

#define vvd(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(double,__VA_ARGS__)

#define vvc(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(char,__VA_ARGS__)

#define vvp(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(P,__VA_ARGS__)

#define vvt(...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(T,__VA_ARGS__)

#define vv(type,...) over4(__VA_ARGS__,vvt4,vvt3,vvt2 ,vvt1,vvt0)(type,__VA_ARGS__)



template<typename T> vector<T> make_v(size_t a) { return vector<T>(a); }

template<typename T, typename... Ts> auto make_v(size_t a, Ts... ts) {return vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));}

#define vni(name, ...) auto name = make_v<ll>(__VA_ARGS__)

#define vnb(name, ...) auto name = make_v<bool>(__VA_ARGS__)

#define vns(name, ...) auto name = make_v<string>(__VA_ARGS__)

#define vnd(name, ...) auto name = make_v<double>(__VA_ARGS__)

#define vnc(name, ...) auto name = make_v<char>(__VA_ARGS__)

#define vnp(name, ...) auto name = make_v<P>(__VA_ARGS__)

#define vn(type,name, ...) auto name = make_v<type>(__VA_ARGS__)



#define PQ priority_queue<ll, vector<ll>, greater<ll> >

#define tos to_string

using mapi = map<ll, ll>;

using mapp = map<P, ll>;

using mapd = map<dou, ll>;

using mapc = map<char, ll>;

using maps = map<str, ll>;

using seti = set<ll>;

using setp = set<P>;

using setd = set<dou>;

using setc = set<char>;

using sets = set<str>;

using qui = queue<ll>;

#define uset unordered_set

#define useti unordered_set<ll,xorshift>

#define mset multiset

#define mseti multiset<ll>

#define umap unordered_map

#define mmap multimap

//任意のマクロサポート用 使う度に初期化する

int index_,v1_,v2_,v3_;



template<class T> struct pq {

    priority_queue<T, vector<T>, greater<T> > q;/*小さい順*/    T su = 0;

    void clear() {        q = priority_queue<T, vector<T>, greater<T> >();        su = 0;    }

    void operator+=(T v) {        su += v;        q.push(v);    }

    T sum() { return su; }

    T top() { return q.top(); }

    void pop() {        su -= q.top();        q.pop();    }

    T poll() {        T ret = q.top();        su -= ret;        q.pop();        return ret;    }

    ll size() { return q.size(); }

};

template<class T> struct pqg {

    priority_queue<T> q;/*大きい順*/    T su = 0;

    void clear() {        q = priority_queue<T>();        su = 0;    }

    void operator+=(T v) {        su += v;        q.push(v);    }

    T sum() { return su; }

    T top() { return q.top(); }

    void pop() {        su -= q.top();        q.pop();    }

    T poll() {        T ret = q.top();        su -= ret;        q.pop();        return ret;    }

    ll size() { return q.size(); }

};

#define pqi pq<ll>

#define pqgi pqg<ll>

//マクロ 繰り返し

//↓@オーバーロード隔離



#define rep1(n) for(ll rep1i = 0,rep1lim=n; rep1i < rep1lim ; ++rep1i)

#define rep2(i, n) for(ll i = 0,rep2lim=n; i < rep2lim ; ++i)

#define rep3(i, m, n) for(ll i = m,rep3lim=n; i < rep3lim ; ++i)

#define rep4(i, m, n, ad) for(ll i = m,rep4lim=n; i < rep4lim ; i+= ad)

//逆順 閉区間

#define rer2(i, n) for(ll i = n; i >= 0 ; i--)

#define rer3(i, m, n) for(ll i = m,rer3lim=n; i >= rer3lim ; i--)

#define rer4(i, m, n, dec) for(ll i = m,rer4lim=n; i >= rer4lim ; i-=dec)

//ループを一つにまとめないとフォーマットで汚くなるため

#define nex_ind1(i) i++

#define nex_ind2(i, j, J) i = (j + 1 == J) ? i + 1 : i, j = (j + 1 == J ? 0 : j + 1)

#define nex_ind3(i, j, k, J, K)i = (j + 1 == J && k + 1 == K) ? i + 1 : i, j = (k + 1 == K) ? (j + 1 == J ? 0 : j + 1) : j, k = (k + 1 == K ? 0 : k + 1)

#define nex_ind4(i, j, k, l, J, K, L) i = (j + 1 == J && k + 1 == K && l + 1 == L) ? i + 1 : i, j = (k + 1 == K && l + 1 == L) ? (j + 1 == J ? 0 : j + 1) : j, k = (l + 1 == L ?(k + 1 == K ? 0 : k + 1) : k), l = l + 1 == L ? 0 : l + 1

#define nex_ind5(i, j, k, l, m, J, K, L, M) i = (j + 1 == J && k + 1 == K && l + 1 == L && m + 1 == M) ? i + 1 : i, j = (k + 1 == K && l + 1 == L && m + 1 == M) ? (j + 1 == J ? 0 : j + 1) : j, k = (l + 1 == L && m + 1 == M ?(k + 1 == K ? 0 : k + 1) : k), l =  m + 1 == M ? l+1 == L ? 0 : l+1 : l,  m = m + 1 == M ? 0 : m + 1



#define repss2(i, I) for (int i = 0; i < I; i++)

#define repss4(i, j, I, J) for (int i = (J ? 0 : I), j = 0; i < I; nex_ind2(i, j, J))

#define repss6(i, j, k, I, J, K) for (int i = (J && K ? 0 : I), j = 0, k = 0; i < I; nex_ind3(i, j, k, J, K))

#define repss8(i, j, k, l, I, J, K, L) for (int i = (J && K && L ? 0 : I), j = 0, k = 0, l = 0; i < I; nex_ind4(i, j, k, l, J, K, L))

#define repss10(i, j, k, l, m, I, J, K, L, M)for (int i = (J && K && L && M ? 0 : I), j = 0, k = 0, l = 0, m = 0; i < I; nex_ind5(i, j, k, l, m, J, K, L, M))



//i,j,k...をnまで見る

#define reps2(i, n) repss2(i, n)

#define reps3(i, j, n) repss4(i, j, n, n)

#define reps4(i, j, k, n) repss6(i, j, k, n, n, n)

#define reps5(i, j, k, l, n) repss8(i, j, k, l, n, n, n, n)



template<class T>void nex_repv2(int&i,int&j,int&I, int&J,vector<vector<T>>&s){    while(1){        j++;        if(j >= J){            j=0;            i++;            if(i < I){                J = (int)s[i].size();            }        }        if(i >= I || J) return;    }}

template<class T> void nex_repv3(int &i, int &j, int &k, int &I, int &J, int &K, vector<vector<vector<T>>> &s) {    while (1) {        k++;        if (k >= K) {            k = 0;            j++;            if (j >= J) {                j = 0;                i++;                if (i >= I)return;            }        }        J = (int) s[i].size();        K = (int) s[i][j].size();        if (J && K) return;    }}



#define repv_2(i,a) repss2(i, sz(a))

//正方形である必要はない

//直前を持つのとどっちが早いか

#define repv_3(i, j, a) for (int I = (int)a.size(), J = (int)a[0].size(), i = 0, j = 0; i < I; nex_repv2(i,j,I,J,a))

//箱状になっている事が要求される つまり[i] 次元目の要素数は一定

#define repv_4(i, j, k, a) for (int I = (int)a.size(), J = (int)a[0].size(), K =(int)a[0][0].size(), i = 0, j = 0, k=0; i < I; nex_repv3(i,j,k,I,J,K,a))

#define repv_5(i, j, k, l, a) repss8(i, j, k, l, sz(a), sz(a[0]), sz(a[0][0]), sz(a[0][0][0]))

#define repv_6(i, j, k, l, m, a) repss10(i, j, k, l, m, sz(a), sz(a[0]), sz(a[0][0]), sz(a[0][0][0]), sz(a[0][0][0][0]))



template<typename T>struct has_rbegin_rend {private:template<typename U>static auto check(U &&obj) -> decltype(std::rbegin(obj), std::rend(obj), std::true_type{});static std::false_type check(...);public:static constexpr bool value = decltype(check(std::declval<T>()))::value;};template<typename T>constexpr bool has_rbegin_rend_v = has_rbegin_rend<T>::value;template<typename Iterator>class Range {public:Range(Iterator &&begin, Iterator &&end) noexcept: m_begin(std::forward<Iterator>(begin)), m_end(std::forward<Iterator>(end)) {}Iterator begin() const noexcept {return m_begin;}Iterator end() const noexcept {return m_end;}private:const Iterator m_begin;const Iterator m_end;};template<typename Iterator>static inline Range<Iterator>makeRange(Iterator &&begin, Iterator &&end) noexcept {return Range<Iterator>{std::forward<Iterator>(begin), std::forward<Iterator>(end)};}template<typename T>static inline decltype(auto) makeReversedRange(const std::initializer_list<T> &iniList) noexcept {return makeRange(std::rbegin(iniList), std::rend(iniList));}template<typename T,typename std::enable_if_t<has_rbegin_rend_v<T>, std::nullptr_t> = nullptr>static inline decltype(auto)makeReversedRange(T &&c) noexcept {return makeRange(std::rbegin(c), std::rend(c));}/* rbegin(), rend()を持たないものはこっちに分岐させて，エラーメッセージを少なくする*/template<typename T,typename std::enable_if<!has_rbegin_rend<T>::value, std::nullptr_t>::type = nullptr>static inline void makeReversedRange(T &&) noexcept {static_assert(has_rbegin_rend<T>::value, "Specified argument doesn't have reverse iterator.");}



#define form1(st) for (auto &&form_it = st.begin(); form_it != st.end(); ++form_it)

#define form3(k, v, st) for (auto &&form_it = st.begin(); form_it != st.end(); ++form_it)

#define form4(k, v, st, r) for (auto &&form_it = st.begin(); form_it != st.end() && (*form_it).fi < r; ++form_it)

#define form5(k, v, st, l, r) for (auto &&form_it = st.lower_bound(l); form_it != st.end() && (*form_it).fi < r; ++form_it)



#define forrm1(st) for (auto &&forrm_it = st.rbegin(); forrm_it != st.rend(); ++forrm_it)

#define forrm3(k, v, st) for (auto &&forrm_it = st.rbegin(); forrm_it != st.rend(); ++forrm_it)



#define fors1(st) for (auto &&fors_it = st.begin(); fors_it != st.end(); ++fors_it)

#define fors2(v, st) for (auto &&fors_it = st.begin(); fors_it != st.end(); ++fors_it)

#define fors3(v, st, r) for (auto &&fors_it = st.begin(); fors_it != st.end() && (*fors_it) < r; ++fors_it)

#define fors4(v, st, l, r) for (auto &&fors_it = st.lower_bound(l); fors_it != st.end() && (*fors_it) < r; ++fors_it)



#define forslr3(st, a, b) for (auto &&forslr_it = st.begin(); forslr_it != st.end(); ++forslr_it)

#define forslr4(v, st, a, b) for (auto &&forslr_it = st.begin(); forslr_it != st.end(); ++forslr_it)

#define forslr5(v, st, r, a, b) for (auto &&forslr_it = st.begin(); forslr_it != st.end() && (*forslr_it) < r; ++forslr_it)

#define forslr6(v, st, l, r, a, b) for (auto &&forslr_it = st.lower_bound(l); forslr_it != st.end() && (*forslr_it) < r; ++forslr_it)



template<class U> vector<U>to1d(vector<U>& a){return a;}

template<class U> vector<U>to1d(vector<vector<U>>&a){vector<U> res;for(auto&& a1 : a)for(auto&& a2 : a1)res.push_back(a2);return res;}

template<class U> vector<U>to1d(vector<vector<vector<U>>>&a){vector<U> res;for(auto&& a1 : a)for(auto&& a2 : a1)for(auto&& a3 : a2) res.push_back(a3);return res;}

template<class U> vector<U>to1d(vector<vector<vector<vector<U>>>>&a){vector<U> res;for(auto&& a1 : a)for(auto&& a2 : a1)for(auto&& a3 : a2) for(auto&& a4 : a3)res.push_back(a4);return res;}

template<class U> vector<U>to1d(vector<vector<vector<vector<vector<U>>>>>&a){vector<U> res;for(auto&& a1 : a)for(auto&& a2 : a1)for(auto&& a3 : a2) for(auto&& a4 : a3)for(auto&& a5 : a4)res.push_back(a5);return res;}

template<class U> vector<U>to1d(vector<vector<vector<vector<vector<vector<U>>>>>>&a){vector<U> res;for(auto&& a1 : a)for(auto&& a2 : a1)for(auto&& a3 : a2) for(auto&& a4 : a3)for(auto&& a5 : a4)for(auto&& a6 : a5)res.push_back(a6);return res;}



#define fora_init_2(a, A) ;

#define fora_init_3(fora_i, a, A) auto &&a = A[fora_i];

#define fora_init_4(a, b, A, B) auto &&a = A[fora_i]; auto &&b = B[fora_i];

#define fora_init_5(fora_i, a, b, A, B) auto &&a = A[fora_i]; auto &&b = B[fora_i];

#define fora_init_6(a, b, c, A, B, C) auto &&a = A[fora_i]; auto &&b = B[fora_i]; auto &&c = C[fora_i];

#define fora_init_7(fora_i, a, b, c, A, B, C) auto &&a = A[fora_i]; auto &&b = B[fora_i]; auto &&c = C[fora_i];

#define fora_init_8(a, b, c, d, A, B, C, D) auto &&a = A[fora_i]; auto &&b = B[fora_i]; auto &&c = C[fora_i]; auto && d = D[fora_i];

#define fora_init_9(fora_i, a, b, c, d, A, B, C, D) auto &&a = A[fora_i]; auto &&b = B[fora_i]; auto &&c = C[fora_i]; auto && d = D[fora_i];

#define fora_init(...) over9(__VA_ARGS__,fora_init_9, fora_init_8, fora_init_7, fora_init_6, fora_init_5, fora_init_4, fora_init_3, fora_init_2)(__VA_ARGS__)



#define forr_init_2(a, A) auto &&a = A[forr_i];

#define forr_init_3(forr_i, a, A) auto &&a = A[forr_i];

#define forr_init_4(a, b, A, B) auto &&a = A[forr_i]; auto &&b = B[forr_i];

#define forr_init_5(forr_i, a, b, A, B) auto &&a = A[forr_i]; auto &&b = B[forr_i];

#define forr_init_6(a, b, c, A, B, C) auto &&a = A[forr_i]; auto &&b = B[forr_i]; auto &&c = C[forr_i];

#define forr_init_7(forr_i, a, b, c, A, B, C) auto &&a = A[forr_i]; auto &&b = B[forr_i]; auto &&c = C[forr_i];

#define forr_init_8(a, b, c, d, A, B, C, D) auto &&a = A[forr_i]; auto &&b = B[forr_i]; auto &&c = C[forr_i]; auto && d = D[forr_i];

#define forr_init_9(forr_i, a, b, c, d, A, B, C, D) auto &&a = A[forr_i]; auto &&b = B[forr_i]; auto &&c = C[forr_i]; auto && d = D[forr_i];

#define forr_init(...) over9(__VA_ARGS__, forr_init_9, forr_init_8, forr_init_7, forr_init_6, forr_init_5, forr_init_4, forr_init_3, forr_init_2)(__VA_ARGS__)





#define forp_init(k, v, ...) auto &&k = (*forp_it).fi;auto &&v = (*forp_it).se;

#define form_init(k, v, ...) auto &&k = (*form_it).fi;auto &&v = (*form_it).se;

#define forrm_init(k, v, ...) auto &&k = (*forrm_it).fi;auto &&v = (*forrm_it).se;

#define fors_init(v, ...) auto &&v = (*fors_it);



#define forlr_init(a,A,ngl,ngr) auto a = A[forlr_i]; auto prev = forlr_i ? A[forlr_i-1] : ngl;auto next = forlr_i+1< rep2lim? A[forlr_i+1] : ngr;

#define forslr_init4(a, A, ngl, ngr) auto a = (*forslr_it); auto prev = (forslr_it!=A.begin())? (*std::prev(forslr_it)) : ngl;auto next = (forslr_it!=std::prev(A.end()))? (*std::next(forslr_it)) : ngr;

#define forslr_init5(a, A, r, ngl, ngr) auto a = (*forslr_it); auto prev = (forslr_it!=A.begin())? (*std::prev(forslr_it)) : ngl;auto next = (forslr_it!=std::prev(A.end()))? (*std::next(forslr_it)) : ngr;

#define forslr_init6(a, A, l, r, ngl, ngr) auto a = (*forslr_it); auto prev = (forslr_it!=A.begin())? (*std::prev(forslr_it)) : ngl;auto next = (forslr_it!=std::prev(A.end()))? (*std::next(forslr_it)) : ngr;

#define forslr_init(...)  over6(__VA_ARGS__,forslr_init6,forslr_init5,forslr_init4)(__VA_ARGS__);



#define fora_2(a, A) for(auto&& a : A)

#define fora_3(fora_i, a, A) rep(fora_i, sz(A))

#define fora_4(a, b, A, B) rep(fora_i, sz(A))

#define fora_5(fora_i, a, b, A, B) rep(fora_i, sz(A))

#define fora_6(a, b, c, A, B, C) rep(fora_i, sz(A))

#define fora_7(fora_i, a, b, c, A, B, C) rep(fora_i, sz(A))

#define fora_8(a, b, c, d, A, B, C, D) rep(fora_i, sz(A))

#define fora_9(fora_i, a, b, c, d, A, B, C, D) rep(fora_i, sz(A))



#define forr_2(a, A) rer(forr_i, sz(A)-1)

#define forr_3(forr_i, a, A) rer(forr_i, sz(A)-1)

#define forr_4(a, b, A, B) rer(forr_i, sz(A)-1)

#define forr_5(forr_i, a, b, A, B) rer(forr_i, sz(A)-1)

#define forr_6(a, b, c, A, B, C) rer(forr_i, sz(A)-1)

#define forr_7(forr_i, a, b, c, A, B, C) rer(forr_i, sz(A)-1)

#define forr_8(a, b, c, d, A, B, C, D) rer(forr_i, sz(A)-1)

#define forr_9(forr_i, a, b, c, d, A, B, C, D) rer(forr_i, sz(A)-1)



//↑@オーバーロード隔離



//rep系はインデックス、for系は中身

#define rep(...) over4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)

#define rer(...) over4(__VA_ARGS__,rer4,rer3,rer2,)(__VA_ARGS__)

//char用のrep

#define repc(i, m, n) for(char i = m,repc3lim=n; i < repc3lim ; ++i)

//i,j,k...をnまで見る

#define reps(...) over5(__VA_ARGS__,reps5,reps4,reps3,reps2,)(__VA_ARGS__)

#define repss(...) over10(__VA_ARGS__, repss10, a, repss8, a, repss6, a, repss4, a, repss2) (__VA_ARGS__)

//vectorのindexを走査する

//repv(i,j,vvi)

#define repv(...) over6(__VA_ARGS__,repv_6,repv_5,repv_4,repv_3,repv_2,)(__VA_ARGS__)

#define rerv(i, A) for (int i = sz(A)-1; i >= 0 ; i--)

//repvn(dp) nは次元

#define repv1(a) repv(i, a)

#define repv2(a) repv(i, j, a)

#define repv3(a) repv(i, j, k, a)

#define repv4(a) repv(i, j, k, l, a)



#define fora(...) over9(__VA_ARGS__, fora_9, fora_8, fora_7, fora_6, fora_5, fora_4, fora_3, fora_2)(__VA_ARGS__)

#define forr(...) over9(__VA_ARGS__, forr_9, forr_8, forr_7, forr_6, forr_5, forr_4, forr_3, forr_2)(__VA_ARGS__)



//#define forr(v, a) for(auto&& v : makeReversedRange(a))

//参照を取らない

#define forv(a, b) for(auto a : to1d(b))



//インデックスを前後含めて走査

#define ring(i, s, len) for (int i = s, prev = (s == 0) ? len - 1 : s - 1, next = (s == len - 1) ? 0 : s + 1, cou = 0; cou < len; cou++, prev = i, i = next, next = (next == len - 1) ? 0 : next + 1)

//値と前後を見る

#define ringv(v, d) index_=0;for (auto prev = d[sz(d)-1],next= (int)d.size()>1?d[1]:d[0],v = d[0]; index_ < sz(d); index_++, prev = v, v = next, next = (index_>=sz(d)-1?d[0]:d[index_+1]))

// 左右をnext prevで見る 0の左と nの右

#define forlr(v, d, banpei_l, banpei_r) rep(forlr_i,sz(d))



#define form(...) over5(__VA_ARGS__,form5,form4,form3,form2,form1)(__VA_ARGS__)

#define forrm(...) over5(__VA_ARGS__,forrm5,forrm4,forrm3,forrm2,forrm1)(__VA_ARGS__)

#define fors(...) over4(__VA_ARGS__,fors4,fors3,fors2,fors1)(__VA_ARGS__)

#define forslr(...) over6(__VA_ARGS__,forslr6,forslr5,forslr4,forslr3)(__VA_ARGS__)

#define forp(k, v, st) for (auto &&forp_it = st.begin(); forp_it != st.end(); ++forp_it)





//マクロ 定数

#define k3 1010

#define k4 10101

#define k5 101010

#define k6 1010101

#define k7 10101010

const ll inf = (ll) 1e9 + 100;

const ll linf = (ll) 1e18 + 100;

const dou dinf = (dou) linf * linf;

const char infc = '{';

const string infs = "{";

const double PI = 3.1415926535897932384626433832795029L;



//マクロ省略形 関数等

#define arsz(a) (sizeof(a)/sizeof(a[0]))

#define sz(a) ((ll)(a).size())

#define mp make_pair

#define pb pop_back

#define pf push_front

#define eb emplace_back

#define all(a) (a).begin(),(a).end()

#define rall(a) (a).rbegin(),(a).rend()



constexpr bool ev(ll a) { return !(a & 1); }

constexpr bool od(ll a) { return (a & 1); }

//@拡張系 こう出来るべきというもの



//埋め込み 存在を意識せずに機能を増やされているもの

namespace std {

    template<> class hash<std::pair<signed, signed>> { public:size_t operator()(const std::pair<signed, signed> &x) const { return hash<ll>()(((ll) x.first << 32) | x.second); }};

    template<> class hash<std::pair<ll, ll>> { public:/*大きいllが渡されると、<<32でオーバーフローするがとりあえず問題ないと判断*/size_t operator()(const std::pair<ll, ll> &x) const { return hash<ll>()(((ll) x.first << 32) | x.second); }};

}

//stream まとめ

/*@formatter:on*/

istream &operator>>(istream &iss, P &a) {

    iss >> a.first >> a.second;

    return iss;

}

template<typename T> istream &operator>>(istream &iss, vector<T> &vec) {

    for (T &x: vec) iss >> x;

    return iss;

}

template<class T, class U> ostream &operator<<(ostream &os, pair<T, U> p) {

    os << p.fi << " " << p.se;

    return os;

}

ostream &operator<<(ostream &os, T p) {

    os << p.f << " " << p.s << " " << p.t;

    return os;

}

ostream &operator<<(ostream &os, F p) {

    os << p.a << " " << p.b << " " << p.c << " " << p.d;

    return os;

}

template<typename T> ostream &operator<<(ostream &os, vector<T> &vec) {

    for (ll i = 0; i < vec.size(); ++i)os << vec[i] << (i + 1 == vec.size() ? "" : " ");

    return os;

}



template<typename T> ostream &operator<<(ostream &os, vector<vector<T>> &vec) {

    for (ll i = 0; i < vec.size(); ++i) {

        for (ll j = 0; j < vec[i].size(); ++j) { os << vec[i][j] << " "; }

        os << endl;

    }

    return os;

}

template<typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &m) {

    os << endl;

    for (auto &&v:m) os << v << endl;

    return os;

}

template<class T> ostream &operator<<(ostream &os, set<T> s) {

    fora(v, s) { os << v << " "; }

    return os;

}

template<class T> ostream &operator<<(ostream &os, mset<T> s) {

    fora(v, s) { os << v << " "; }

    return os;

}

template<class T> ostream &operator<<(ostream &os, deque<T> a) {

    fora(v, a)os << v << " ";

    return os;

}

ostream &operator<<(ostream &os, vector<vector<char>> &vec) {

    rep(h, sz(vec)) {

        rep(w, sz(vec[0])) { os << vec[h][w]; }

        os << endl;

    }

    return os;

}

//template<class T,class U>ostream &operator<<(ostream &os, vector<pair<T,U>>& a) {fora(v,a)os<<v<<endl;return os;}

/*@formatter:off*/

template<typename W, typename H> void resize(W &vec, const H head) { vec.resize(head); }

template<typename W, typename H, typename ... T> void resize(W &vec, const H &head, const T ... tail) {vec.resize(head);for (auto &v: vec)resize(v, tail...);}

//template<typename W, typename H> void resize(vector<W> &vec, const H head) { vec.resize(head); }

//template<typename W, typename H, typename ... T> void resize(vector<W> &vec, const H &head, const T ... tail) {vec.resize(head);for (auto &v: vec)resize(v, tail...);}

template<typename T, typename F> bool all_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool all_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (!all_of2(v[i], f))return false; }    return true;}

template<typename T, typename F> bool any_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool any_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (any_of2(v[i], f))return true; }    return false;}

template<typename T, typename F> bool none_of2(T &v, F f) { return f(v); }

template<typename T, typename F> bool none_of2(vector<T> &v, F f) {    rep(i, sz(v)) { if (none_of2(v[i], f))return false; }    return true;}

template<typename T, typename F> bool find_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll find_if2(vector<T> &v, F f) {    rep(i, sz(v)) { if (find_if2(v[i], f))return i; }    return sz(v);}

template<typename T, typename F> bool rfind_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll rfind_if2(vector<T> &v, F f) {    rer(i, sz(v) - 1) { if (rfind_if2(v[i], f))return i; }    return -1;}

template<class T> bool contains(string &s, const T &v) { return s.find(v) != string::npos; }

template<typename T> bool contains(vector<T> &v, const T &val) { return std::find(v.begin(), v.end(), val) != v.end(); }

template<typename T, typename F> bool contains_if2(vector<T> &v, F f) { return find_if(v.begin(), v.end(), f) != v.end(); }

template<typename T, typename F> ll count_if2(T &v, F f) { return f(v); }

template<typename T, typename F> ll count_if2(vector<T> &vec, F f) {    ll ret = 0;    fora(v, vec)ret += count_if2(v, f);    return ret;}

template<typename T, typename F> void for_each2(T &v, F f) { f(v); }

template<typename T, typename F> void for_each2(vector<T> &vec, F f) { fora(v, vec)for_each2(v, f); }

template<typename W> ll count_od(vector<W> &a) {return count_if2(a,[](ll v){return v&1 ;});}

template<typename W> ll count_ev(vector<W> &a) {return count_if2(a,[](ll v){return !(v&1) ;});}

//削除した後のvectorを返す

template<typename T, typename F> vector<T> erase_if2(vector<T> &v, F f) {vector<T> nv;rep(i, sz(v)) { if (!f(v[i])) { nv.push_back(v[i]); }}return nv;}

template<typename T, typename F> vector<vector<T>> erase_if2(vector<vector<T>> &v, F f) {vector<vector<T>> res;rep(i, sz(v)) { res[i] = erase_if2(v[i], f); }return res;}

template<typename T, typename F> vector<T> l_erase_if2(vector<T> &v, F f) {vector<T> nv;rep(i, sz(v)) { if (!f(v[i])) { nv.push_back(v[i]); }}return nv;}



template<typename T, typename F> ll l_rfind_if(vector<T> &v, F f) {    rer(i, sz(v) - 1) { if (f(v[i]))return i; }    return -1;}

template<typename T, typename F> bool l_contains_if(vector<T> &v, F f) {    rer(i, sz(v) - 1) { if (f(v[i]))return true; }    return false;}

template<class A,class B, class C> auto t_all_of(A a,B b, C c){return std::all_of(a,b,c);}

template<class A,class B, class C> auto t_any_of(A a,B b, C c){return std::any_of(a,b,c);}

template<class A,class B, class C> auto t_none_of(A a,B b, C c){return std::none_of(a,b,c);}

template<class A,class B, class C> auto t_find_if(A a,B b, C c){return std::find_if(a,b,c);}

template<class A,class B, class C> auto t_count_if(A a,B b, C c){return std::count_if(a,b,c);}



#define all_of_s__2(a,right) (t_all_of(all(a),lamr(right)))

#define all_of_s__3(a,v,siki) (t_all_of(all(a),[&](auto v){return siki;}))

#define all_of_s(...) over3(__VA_ARGS__,all_of_s__3,all_of_s__2)(__VA_ARGS__)



//all_of(A, %2);

//all_of(A, a, a%2);

#define all_of__2(a,right) all_of2(a,lamr(right))

#define all_of__3(a,v,siki) all_of2(a,[&](auto v){return siki;})

#define all_of(...) over3(__VA_ARGS__,all_of__3,all_of__2)(__VA_ARGS__)

#define all_of_f(a,f) all_of2(a,f)



#define any_of_s__2(a,right) (t_any_of(all(a),lamr(right)))

#define any_of_s__3(a,v,siki) (t_any_of(all(a),[&](auto v){return siki;}))

#define any_of_s(...) over3(__VA_ARGS__,any_of_s__3,any_of_s__2)(__VA_ARGS__)



#define any_of__2(a,right) any_of2(a,lamr(right))

#define any_of__3(a,v, siki) any_of2(a,[&](auto v){return siki;})

#define any_of(...) over3(__VA_ARGS__,any_of__3,any_of__2)(__VA_ARGS__)

#define any_of_f(a,f) any_of2(a,f)



#define none_of_s__2(a,right) (t_none_of(all(a),lamr(right)))

#define none_of_s__3(a,v,siki) (t_none_of(all(a),[&](auto v){return siki;}))

#define none_of_s(...) over3(__VA_ARGS__,none_of_s__3,none_of_s__2)(__VA_ARGS__)



#define none_of__2(a,right) none_of2(a,lamr(right))

#define none_of__3(a,v, siki) none_of2(a,[&](auto v){return siki;})

#define none_of(...) over3(__VA_ARGS__,none_of__3,none_of__2)(__VA_ARGS__)

#define none_of_f(a,f) none_of2(a,f)



#define find_if_s__2(a,right) (t_find_if(all(a),lamr(right))-a.begin())

#define find_if_s__3(a,v,siki) (t_find_if(all(a),[&](auto v){return siki;})-a.begin())

#define find_if_s(...) over3(__VA_ARGS__,find_if_s__3,find_if_s__2)(__VA_ARGS__)



#define find_if__2(a,right) find_if2(a,lamr(right))

#define find_if__3(a,v, siki) find_if2(a,[&](auto v){return siki;})

#define find_if(...) over3(__VA_ARGS__,find_if__3,find_if__2)(__VA_ARGS__)

#define find_if_f(a,f) find_if2(a,f)



#define rfind_if_s__2(a,right) l_rfind_if(a, lamr(right))

#define rfind_if_s__3(a,v,siki) l_rfind_if(a, [&](auto v){return siki;})

#define rfind_if_s(...) over3(__VA_ARGS__,rfind_if_s__3,rfind_if_s__2)(__VA_ARGS__)



#define rfind_if__2(a,right) rfind_if2(a,lamr(right))

#define rfind_if__3(a,v, siki) rfind_if2(a,[&](auto v){return siki;})

#define rfind_if(...) over3(__VA_ARGS__,rfind_if__3,rfind_if__2)(__VA_ARGS__)

#define rfind_if_f(a,f) rfind_if2(a,f)



#define contains_if_s__2(a,right) l_contains_if(a, lamr(right))

#define contains_if_s__3(a,v,siki) l_contains_if(a, [&](auto v){return siki;})

#define contains_if_s(...) over3(__VA_ARGS__,contains_if_s__3,contains_if_s__2)(__VA_ARGS__)



#define contains_if__2(a,right) contains_if2(a,lamr(right))

#define contains_if__3(a,v, siki) contains_if2(a,[&](auto v){return siki;})

#define contains_if(...) over3(__VA_ARGS__,contains_if__3,contains_if__2)(__VA_ARGS__)

#define contains_if_f(a,f) contains_if2(a,f)



#define count_if_s__2(a,right) (t_count_if(all(a),lamr(right)))

#define count_if_s__3(a,v,siki) (t_count_if(all(a),[&](auto v){return siki;}))

#define count_if_s(...) over3(__VA_ARGS__,count_if_s__3,count_if_s__2)(__VA_ARGS__)



#define count_if__2(a,right) count_if2(a,lamr(right))

#define count_if__3(a,v, siki) count_if2(a,[&](auto v){return siki;})

#define count_if(...) over3(__VA_ARGS__,count_if__3,count_if__2)(__VA_ARGS__)

#define count_if_f(a,f) count_if2(a,f)





#define for_each_s__2(a,right) do{fora(v,a){v right;}}while(0)

#define for_each_s__3(a,v, siki) do{fora(v,a){siki;}}while(0)

#define for_each_s(...) over3(__VA_ARGS__,for_each_s__3,for_each_s__2)(__VA_ARGS__)



#define for_each__2(a,right) for_each2(a,lamr(right))

#define for_each__3(a,v, siki) for_each2(a,[&](auto v){return siki;})

#define for_each(...) over3(__VA_ARGS__,for_each__3,for_each__2)(__VA_ARGS__)

#define for_each_f(a, f) for_each2(a, f);



#define erase_if_s__2(a,right) l_erase_if2(a,lamr(right))

#define erase_if_s__3(a,v, siki) l_erase_if2(a,[&](auto v){return siki;})

#define erase_if_s(...) over3(__VA_ARGS__,erase_if_s__3,erase_if_s__2)(__VA_ARGS__)





#define erase_if__2(a,right) erase_if2(a,lamr(right))

#define erase_if__3(a,v, siki) erase_if2(a,[&](auto v){return siki;})

#define erase_if(...) over3(__VA_ARGS__,erase_if__3,erase_if__2)(__VA_ARGS__)

#define erase_if_f(a,f) erase_if2(a,f)



#define entry_if_s__2(a,right) l_entry_if2(a,lamr(right))

#define entry_if_s__3(a,v, siki) l_entry_if2(a,[&](auto v){return siki;})

#define entry_if_s(...) over3(__VA_ARGS__,entry_if_s__3,entry_if_s__2)(__VA_ARGS__)





#define entry_if__2(a,right) entry_if2(a,lamr(right))

#define entry_if__3(a,v, siki) entry_if2(a,[&](auto v){return siki;})

#define entry_if(...) over3(__VA_ARGS__,entry_if__3,entry_if__2)(__VA_ARGS__)

#define entry_if_f(a,f) entry_if2(a,f)







template<class T, class U,class W> void replace(vector<W> &a, T key, U v) { rep(i,sz(a))if(a[i]==key)a[i]=v; }

template<class T, class U,class W> void replace(vector<vector<W>> &A, T key, U v) { rep(i,sz(A))replace(A[i], key, v); }

void replace(str &a, char key, str v) { if (v == "")a.erase(remove(all(a), key), a.end()); }

void replace(str &a, char key, char v) { replace(all(a), key, v); }

//keyと同じかどうか01で置き換える

template<class T, class U> void replace(vector<T> &a, U k) { rep(i, sz(a)) a[i] = a[i] == k; }

template<class T, class U> void replace(vector<vector<T >> &a, U k) { rep(i, sz(a))rep(j, sz(a[0])) a[i][j] = a[i][j] == k; }

//template<class T> void replace(T &a) { replace(a, '#'); }

void replace(str &a) {    int dec = 0;    if('a'<=a[0]&&a[0]<='z')dec = 'a';    if('A'<=a[0]&&a[0]<='Z')dec = 'A';    fora(v,a)v-=dec;}

void replace(str &a, str key, str v) {stringstream t;ll kn = sz(key);std::string::size_type Pos(a.find(key));ll l = 0;while (Pos != std::string::npos) {t << a.substr(l, Pos - l);t << v;l = Pos + kn;Pos = a.find(key, Pos + kn);}t << a.substr(l, sz(a) - l);a = t.str();}

template<class T> bool includes(vector<T> &a, vector<T> &b) {vi c = a;vi d = b;sort(all(c));sort(all(d));return includes(all(c), all(d));}

template<class T> bool is_permutation(vector<T> &a, vector<T> &b) { return is_permutation(all(a), all(b)); }

template<class T> bool next_permutation(vector<T> &a) { return next_permutation(all(a)); }

void iota(vector<ll> &ve, ll s, ll n) {ve.resize(n);iota(all(ve), s);}

vi iota(ll s, ll len) {vi ve(len);iota(all(ve), s);return ve;}

template<class A, class B> auto vtop(vector<A> &a, vector<B> &b) {    assert(sz(a) == sz(b));    /*stringを0で初期化できない  */  vector<pair<A, B>> res;    rep(i, sz(a))res.eb(a[i], b[i]);return res;}

template<class A, class B> void ptov(vector<pair<A, B>> &p, vector<A> &a, vector<B> &b) {    a.resize(sz(p)), b.resize(sz(p));    rep(i, sz(p))a[i] = p[i].fi, b[i] = p[i].se;}

template<class A, class B, class C> auto vtot(vector<A> &a, vector<B> &b, vector<C> &c) {    assert(sz(a) == sz(b) && sz(b) == sz(c));    vector<T2<A, B, C>> res;    rep(i, sz(a))res.eb(a[i], b[i], c[i]);    return res;}

template<class A, class B, class C, class D> auto vtof(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    assert(sz(a) == sz(b) && sz(b) == sz(c) && sz(c) == sz(d));    vector<F2<A, B, C, D>> res;    rep(i, sz(a))res.eb(a[i], b[i], c[i], d[i]);    return res;}

enum pcomparator { fisi, fisd, fdsi, fdsd, sifi, sifd, sdfi, sdfd };

enum tcomparator {    fisiti, fisitd, fisdti, fisdtd, fdsiti, fdsitd, fdsdti, fdsdtd,    fitisi, fitisd, fitdsi, fitdsd, fdtisi, fdtisd, fdtdsi, fdtdsd,    sifiti, sifitd, sifdti, sifdtd, sdfiti, sdfitd, sdfdti, sdfdtd,    sitifi, sitifd, sitdfi, sitdfd, sdtifi, sdtifd, sdtdfi, sdfdfd,    tifisi, tifisd, tifdsi, tifdsd, tdfisi, tdfisd, tdfdsi, tdfdsd,    tisifi, tisifd, tisdfi, tisdfd, tdsifi, tdsifd, tdsdfi, tdsdfd};

template<class A, class B> void sort(vector<pair<A, B>> &a, pcomparator type) {    typedef pair<A, B> U;    if (type == fisi) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi < r.fi : l.se < r.se; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi < r.fi : l.se > r.se; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi > r.fi : l.se < r.se; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.fi != r.fi ? l.fi > r.fi : l.se > r.se; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se < r.se : l.fi < r.fi; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se < r.se : l.fi > r.fi; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se > r.se : l.fi < r.fi; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.se != r.se ? l.se > r.se : l.fi > r.fi; });};template<class U> void sort(vector<U> &a, pcomparator type) {    if (type == fisi) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f > r.f; });};template<class A, class B, class C, class D> void sort(vector<F2<A, B, C, D> > &a, pcomparator type) {    typedef F2<A, B, C, D> U;    if (type == fisi) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == fisd) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == fdsi) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == fdsd) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == sifi) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == sifd) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == sdfi) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == sdfd) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a > r.a; });};template<class U> void sort(vector<U> &a, tcomparator type) {    if (type == 0) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s < r.s : l.t < r.t; });    else if (type == 1) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s < r.s : l.t > r.t; });    else if (type == 2) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s > r.s : l.t < r.t; });    else if (type == 3) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.s != r.s ? l.s > r.s : l.t > r.t; });    else if (type == 4) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s < r.s : l.t < r.t; });    else if (type == 5) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s < r.s : l.t > r.t; });    else if (type == 6) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s > r.s : l.t < r.t; });    else if (type == 7) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.s != r.s ? l.s > r.s : l.t > r.t; });    else if (type == 8) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t < r.t : l.s < r.s; });    else if (type == 9) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t < r.t : l.s > r.s; });    else if (type == 10) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t > r.t : l.s < r.s; });    else if (type == 11) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f < r.f : l.t != r.t ? l.t > r.t : l.s > r.s; });    else if (type == 12) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t < r.t : l.s < r.s; });    else if (type == 13) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t < r.t : l.s > r.s; });    else if (type == 14) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t > r.t : l.s < r.s; });    else if (type == 15) sort(all(a), [&](U l, U r) { return l.f != r.f ? l.f > r.f : l.t != r.t ? l.t > r.t : l.s > r.s; });    else if (type == 16) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f < r.f : l.t < r.t; });    else if (type == 17) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f < r.f : l.t > r.t; });    else if (type == 18) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f > r.f : l.t < r.t; });    else if (type == 19) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.f != r.f ? l.f > r.f : l.t > r.t; });    else if (type == 20) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f < r.f : l.t < r.t; });    else if (type == 21) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f < r.f : l.t > r.t; });    else if (type == 22) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f > r.f : l.t < r.t; });    else if (type == 23) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.f != r.f ? l.f > r.f : l.t > r.t; });    else if (type == 24) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t < r.t : l.f < r.f; });    else if (type == 25) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t < r.t : l.f > r.f; });    else if (type == 26) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t > r.t : l.f < r.f; });    else if (type == 27) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s < r.s : l.t != r.t ? l.t > r.t : l.f > r.f; });    else if (type == 28) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t < r.t : l.f < r.f; });    else if (type == 29) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t < r.t : l.f > r.f; });    else if (type == 30) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t > r.t : l.f < r.f; });    else if (type == 31) sort(all(a), [&](U l, U r) { return l.s != r.s ? l.s > r.s : l.t != r.t ? l.t > r.t : l.f > r.f; });    else if (type == 32) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == 33) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == 34) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == 35) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == 36) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f < r.f : l.s < r.s; });    else if (type == 37) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f < r.f : l.s > r.s; });    else if (type == 38) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f > r.f : l.s < r.s; });    else if (type == 39) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.f != r.f ? l.f > r.f : l.s > r.s; });    else if (type == 40) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == 41) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == 42) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == 43) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t < r.t : l.s != r.s ? l.s > r.s : l.f > r.f; });    else if (type == 44) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s < r.s : l.f < r.f; });    else if (type == 45) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s < r.s : l.f > r.f; });    else if (type == 46) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s > r.s : l.f < r.f; });    else if (type == 47) sort(all(a), [&](U l, U r) { return l.t != r.t ? l.t > r.t : l.s != r.s ? l.s > r.s : l.f > r.f; });}template<class A, class B, class C, class D> void sort(vector<F2<A, B, C, D>> &a, tcomparator type) {    typedef F2<A, B, C, D> U;    if (type == 0) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b < r.b : l.c < r.c; });    else if (type == 1) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b < r.b : l.c > r.c; });    else if (type == 2) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b > r.b : l.c < r.c; });    else if (type == 3) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.b != r.b ? l.b > r.b : l.c > r.c; });    else if (type == 4) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b < r.b : l.c < r.c; });    else if (type == 5) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b < r.b : l.c > r.c; });    else if (type == 6) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b > r.b : l.c < r.c; });    else if (type == 7) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.b != r.b ? l.b > r.b : l.c > r.c; });    else if (type == 8) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c < r.c : l.b < r.b; });    else if (type == 9) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c < r.c : l.b > r.b; });    else if (type == 10) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c > r.c : l.b < r.b; });    else if (type == 11) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a < r.a : l.c != r.c ? l.c > r.c : l.b > r.b; });    else if (type == 12) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c < r.c : l.b < r.b; });    else if (type == 13) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c < r.c : l.b > r.b; });    else if (type == 14) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c > r.c : l.b < r.b; });    else if (type == 15) sort(all(a), [&](U l, U r) { return l.a != r.a ? l.a > r.a : l.c != r.c ? l.c > r.c : l.b > r.b; });    else if (type == 16) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a < r.a : l.c < r.c; });    else if (type == 17) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a < r.a : l.c > r.c; });    else if (type == 18) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a > r.a : l.c < r.c; });    else if (type == 19) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.a != r.a ? l.a > r.a : l.c > r.c; });    else if (type == 20) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a < r.a : l.c < r.c; });    else if (type == 21) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a < r.a : l.c > r.c; });    else if (type == 22) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a > r.a : l.c < r.c; });    else if (type == 23) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.a != r.a ? l.a > r.a : l.c > r.c; });    else if (type == 24) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c < r.c : l.a < r.a; });    else if (type == 25) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c < r.c : l.a > r.a; });    else if (type == 26) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c > r.c : l.a < r.a; });    else if (type == 27) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b < r.b : l.c != r.c ? l.c > r.c : l.a > r.a; });    else if (type == 28) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c < r.c : l.a < r.a; });    else if (type == 29) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c < r.c : l.a > r.a; });    else if (type == 30) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c > r.c : l.a < r.a; });    else if (type == 31) sort(all(a), [&](U l, U r) { return l.b != r.b ? l.b > r.b : l.c != r.c ? l.c > r.c : l.a > r.a; });    else if (type == 32) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == 33) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == 34) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == 35) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == 36) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a < r.a : l.b < r.b; });    else if (type == 37) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a < r.a : l.b > r.b; });    else if (type == 38) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a > r.a : l.b < r.b; });    else if (type == 39) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.a != r.a ? l.a > r.a : l.b > r.b; });    else if (type == 40) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == 41) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == 42) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == 43) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c < r.c : l.b != r.b ? l.b > r.b : l.a > r.a; });    else if (type == 44) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b < r.b : l.a < r.a; });    else if (type == 45) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b < r.b : l.a > r.a; });    else if (type == 46) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b > r.b : l.a < r.a; });    else if (type == 47) sort(all(a), [&](U l, U r) { return l.c != r.c ? l.c > r.c : l.b != r.b ? l.b > r.b : l.a > r.a; });}



void sort(string &a) { sort(all(a)); }

void sort(int& a,int& b){    if(a>b)swap(a,b);}

void sort(int& a,int& b, int& c){    sort(a,b);    sort(a,c);    sort(b,c);}

void rsort(int& a,int& b){    if(a<b)swap(a,b);}

void rsort(int& a,int& b, int& c){    rsort(a,b);    rsort(a,c);    rsort(b,c);}

template<class T> void sort(vector<T> &a) { sort(all(a)); }

//P l, P rで f(P) の形で渡す

template<class U, class F> void sort(vector<U> &a, F f) { sort(all(a), [&](U l, U r) { return f(l) < f(r); }); };

template<class T> void rsort(vector<T> &a) { sort(all(a), greater<T>()); };

template<class U, class F> void rsort(vector<U> &a, F f) { sort(all(a), [&](U l, U r) { return f(l) > f(r); }); };



//F = T<T>

//例えばreturn p.fi + p.se;

template<class A, class B> void sortp(vector<A> &a, vector<B> &b) {    auto c = vtop(a, b);    sort(c);    rep(i, sz(a)) a[i] = c[i].fi, b[i] = c[i].se;}template<class A, class B, class F> void sortp(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    sort(c, f);    rep(i, sz(a)) a[i] = c[i].fi, b[i] = c[i].se;}template<class A, class B> void rsortp(vector<A> &a, vector<B> &b) {    auto c = vtop(a, b);    rsort(c);    rep(i, sz(a))a[i] = c[i].first, b[i] = c[i].second;}template<class A, class B, class F> void rsortp(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    rsort(c, f);    rep(i, sz(a))a[i] = c[i].first, b[i] = c[i].second;}

template<class A, class B, class C> void sortt(vector<A> &a, vector<B> &b, vector<C> &c) {    auto d = vtot(a, b, c);    sort(d);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class F> void sortt(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    sort(d, f);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C> void rsortt(vector<A> &a, vector<B> &b, vector<C> &c) {    auto d = vtot(a, b, c);    rsort(d);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class F> void rsortt(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    rsort(d, f);    rep(i, sz(a)) a[i] = d[i].f, b[i] = d[i].s, c[i] = d[i].t;}

template<class A, class B, class C, class D> void sortf(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    auto e = vtof(a, b, c, d);    sort(e);    rep(i, sz(a)) a[i] = e[i].a, b[i] = e[i].b, c[i] = e[i].c, d[i] = e[i].d;}

template<class A, class B, class C, class D> void rsortf(vector<A> &a, vector<B> &b, vector<C> &c, vector<D> &d) {    auto e = vtof(a, b, c, d);    rsort(e);    rep(i, sz(a)) a[i] = e[i].a, b[i] = e[i].b, c[i] = e[i].c, d[i] = e[i].d;}

//sortindex 元のvectorはソートしない

template<class T> vi sorti(vector<T> &a) {    auto b = a;    vi ind = iota(0, sz(a));    sortp(b, ind);    return ind;}/*indexの分で型が変わるためpcomparatorが必要*/template<class T> vi sorti(vector<T> &a, pcomparator f) {    auto b = a;    vi ind = iota(0, sz(a));    sortp(b, ind, f);    return ind;}template<class T, class F> vi sorti(vector<T> &a, F f) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(a[x]) < f(a[y]); });    return ind;}template<class T> vi rsorti(vector<T> &a) {    auto b = a;    vi ind = iota(0, sz(a));    rsortp(b, ind);    return ind;}template<class T, class F> vi rsorti(vector<T> &a, F f) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(a[x]) > f(a[y]); });    return ind;}template<class A, class B, class F> vi sortpi(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(c[x]) < f(c[y]); });    return ind;}template<class A, class B> vi sortpi(vector<A> &a, vector<B> &b, pcomparator f) {    vi ind = iota(0, sz(a));    auto c = a;    auto d = b;    sortt(c, d, ind, f);    return ind;}template<class A, class B> vi sortpi(vector<A> &a, vector<B> &b) { return sortpi(a, b, fisi); };template<class A, class B, class F> vi rsortpi(vector<A> &a, vector<B> &b, F f) {    auto c = vtop(a, b);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(c[x]) > f(c[y]); });    return ind;}template<class A, class B> vi rsortpi(vector<A> &a, vector<B> &b) { return sortpi(a, b, fdsd); };template<class A, class B, class C, class F> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(d[x]) < f(d[y]); });    return ind;}template<class A, class B, class C> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c, pcomparator f) {    vi ind = iota(0, sz(a));    auto d = vtof(a, b, c, ind);    sort(d, f);    rep(i, sz(a))ind[i] = d[i].d;    return ind;}template<class A, class B, class C> vi sortti(vector<A> &a, vector<B> &b, vector<C> &c) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) {        if (a[x] == a[y]) {            if (b[x] == b[y])return c[x] < c[y];            else return b[x] < b[y];        } else {            return a[x] < a[y];        }    });    return ind;}template<class A, class B, class C, class F> vi rsortti(vector<A> &a, vector<B> &b, vector<C> &c, F f) {    auto d = vtot(a, b, c);    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) { return f(d[x]) > f(d[y]); });    return ind;}template<class A, class B, class C> vi rsortti(vector<A> &a, vector<B> &b, vector<C> &c) {    vi ind = iota(0, sz(a));    sort(all(ind), [&](ll x, ll y) {        if (a[x] == a[y]) {            if (b[x] == b[y])return c[x] > c[y];            else return b[x] > b[y];        } else {            return a[x] > a[y];        }    });    return ind;}

template<class T> void sort2(vector<vector<T >> &a) { for (ll i = 0, n = a.size(); i < n; ++i)sort(a[i]); }

template<class T> void rsort2(vector<vector<T >> &a) { for (ll i = 0, n = a.size(); i < n; ++i)rsort(a[i]); }



template<class... T,class U> auto sorted(U head,T... a) { sort(head,a...); return head;}



template<typename A, size_t N, typename T> void fill(A (&a)[N], const T &v) { rep(i, N)a[i] = v; }template<typename A, size_t N, size_t O, typename T> void fill(A (&a)[N][O], const T &v) { rep(i, N)rep(j, O)a[i][j] = v; }template<typename A, size_t N, size_t O, size_t P, typename T> void fill(A (&a)[N][O][P], const T &v) { rep(i, N)rep(j, O)rep(k, P)a[i][j][k] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, typename T> void fill(A (&a)[N][O][P][Q], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)a[i][j][k][l] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, typename T> void fill(A (&a)[N][O][P][Q][R], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)a[i][j][k][l][m] = v; }template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S, typename T> void fill(A (&a)[N][O][P][Q][R][S], const T &v) { rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)rep(n, S)a[i][j][k][l][m][n] = v; }

template<typename W, typename T>void fill(W &xx, const T vall) {    xx = vall;}template<typename W, typename T>void fill(vector<W> &vecc, const T vall) {    for (auto &&vx     : vecc)fill(vx, vall);}

template<typename W,typename T>void fill(vector<W> &xx,ll len,const T v) {rep(i, len)xx[i]=v;}

template<typename W, typename T> void fill(vector<vector<W>> &xx, int sh, int th, int sw, int tw, T v) { rep(h, sh, th)rep(w, sw, tw)xx[h][w] = v; }

template<class T,class U>void fill(vector<T> &a,vi& ind,U val) {fora(v,ind)a[v]=val;}

template<class W,class T>void fill(mvec<W> &xx,const T v){

    fora(x,xx)fill(x,v);

}





template<typename A, size_t N> A sum(A (&a)[N]) {    A res = 0;    rep(i, N)res += a[i];    return res;}template<typename A, size_t N, size_t O> A sum(A (&a)[N][O]) {    A res = 0;    rep(i, N)rep(j, O)res += a[i][j];    return res;}template<typename A, size_t N, size_t O, size_t P> A sum(A (&a)[N][O][P]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)res += a[i][j][k];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q> A sum(A (&a)[N][O][P][Q]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)res += a[i][j][k][l];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R> A sum(A (&a)[N][O][P][Q][R]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)res += a[i][j][k][l][m];    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S> A sum(A (&a)[N][O][P][Q][R][S]) {    A res = 0;    rep(i, N)rep(j, O)rep(k, P)rep(l, Q)rep(m, R)rep(n, S)res += a[i][j][k][l][m][n];    return res;}

//@汎用便利関数 入力

ll in() {ll ret;cin >> ret;return ret;}

string sin() {string ret;cin >> ret;return ret;}

template<class T>  void in(T &head) { cin >> head; }template<class T, class... U>  void in(T &head, U &... tail) {cin >> head;in(tail...);}



#define din1(a) ll a;cin>>a

#define din2(a, b) ll a,b;cin>>a>> b

#define din3(a, b, c) ll a,b,c;cin>>a>>b>>c

#define din4(a, b, c, d) ll a,b,c,d;cin>>a>>b>>c>>d

#define din5(a, b, c, d, e) ll a,b,c,d,e;cin>>a>>b>>c>>d>>e

#define din6(a, b, c, d, e, f) ll a,b,c,d,e,f;cin>>a>>b>>c>>d>>e>>f

#define din(...) over6(__VA_ARGS__,din6,din5,din4,din3,din2 ,din1)(__VA_ARGS__)



#define dins1(a) str a;cin>>a

#define dins2(a, b) str a,b;cin>>a>> b

#define dins3(a, b, c) str a,b,c;cin>>a>>b>>c

#define dins4(a, b, c, d) str a,b,c,d;cin>>a>>b>>c>>d

#define dins5(a, b, c, d, e) str a,b,c,d,e;cin>>a>>b>>c>>d>>e

#define dins6(a, b, c, d, e, f) str a,b,c,d,e,f;cin>>a>>b>>c>>d>>e>>f

#define dins(...) over6(__VA_ARGS__,dins6,dins5,dins4,dins3,dins2 ,dins1)(__VA_ARGS__)



#define din1d(a) din1(a);a--

#define din2d(a, b) din2(a,b);a--,b--

#define din3d(a, b, c) din3(a,b,c);a--,b--,c--

#define din4d(a, b, c, d) din4(a,b,c,d);a--,b--,c--,d--

#define dind(...) over4(__VA_ARGS__,din4d,din3d,din2d ,din1d)(__VA_ARGS__)



template<class T> void out2(T &&head) { cout << head; }

template<class T, class... U> void out2(T &&head, U &&... tail) {    cout << head << " ";    out2(tail...);}

template<class T, class... U> void out(T &&head, U &&... tail) {    cout << head << " ";    out2(tail...);    cout << "" << endl;}

template<class T> void out(T &&head) {    cout << head  << endl;}

void out() {    cout << ""  << endl;}





#ifdef _DEBUG

template<class T> void err2(T &&head) { cerr << head; }

template<class T, class... U> void err2(T &&head, U &&... tail) {    cerr << head << " ";    err2(tail...);}

template<class T, class... U> void err(T &&head, U &&... tail) {    cerr << head << " ";    err2(tail...);    cerr << "" << endl;}

template<class T> void err(T &&head) {    cerr << head  << endl;}

void err() {    cerr << ""  << endl;}

template<class T> string out_m2(vector<T> &a, ll W = inf) {    stringstream ss;    if (W == inf)W = min(sz(a), 12ll);    if (sz(a) == 0)return ss.str();    rep(i, W) {        ss << a[i];        if (typeid(a[i]) == typeid(P)) {            ss << endl;        } else {            ss << " ";        }    }    return ss.str();}

template<class T> string out_m2(vector<vector<T> > &a, ll H = inf, ll W = inf, int key = -1) {H = min({H, sz(a), 12ll});W = min({W, sz(a[0]), 12ll});stringstream ss;ss << endl;if (key == -1)ss << " *|"; else ss << " " << key << "|";rep(w, W)ss << std::right << std::setw(4) << w;ss << "" << endl;rep(w, W * 4 + 3)ss << "_";ss << "" << endl;rep(h, H) {ss << std::right << std::setw(2) << h << "|";rep(w, min(sz(a[h]),12ll)) { if (abs(a[h][w]) == linf) ss << "   e" << ""; else ss << std::right << std::setw(4) << a[h][w]; }ss << "" << endl;}return ss.str();}

template<class T> string out_m2(vector<vector<vector<T> > > &a, ll H = inf, ll W = inf, ll U = inf) {stringstream ss;    if (H == inf)H = 12;    H = min(H, sz(a));    rep(i, H) {        ss << endl;        ss << out_m2(a[i], W, U, i);    }       return ss.str();}

template<class T, size_t N> string out_m2(T (&a)[N]) {    vector<T> b;    resize(b, N);    rep(i, N) {        b[i] = a[i];    }    return out_m2(b);}

template<class T, size_t N, size_t M> string out_m2(T (&a)[N][M]) {    vector<vector<T>> b;    resize(b, N, M);    rep(i, N) {        rep(j, M) {            b[i][j] = a[i][j];        }    }    return out_m2(b);}

template<class T, size_t N, size_t M, size_t O> string out_m2(T (&a)[N][M][O]) {    vector<vector<vector<T>>> b;    resize(b, N, M, O);    rep(i, N) {        rep(j, M) {            rep(k, O) {                b[i][j][k] = a[i][j][k];            }        }    }    return out_m2(b);}

string out_m2(int a) {stringstream ss;ss << a;return ss.str();}

/*@formatter:on*/

template<class T> string out_m2(mvec<mvec<T> > &a, ll H = inf, ll W = inf, int key = inf) {

    H = min({H, sz(a), 6ll});

    W = min({W, sz(a[0]), 6ll});

    stringstream ss;

    ss << endl;

//    if (key == inf)ss << " *|"; else ss << " " << key << "|";

    if (key == inf)ss << " *|";

    else {

        ss << std::right << std::setw(2) << key;

        ss << "|";

    }

    rep(w, -W, W)ss << std::right << std::setw(4) << w;

    ss << "" << endl;

    rep(w, W * 8 + 3)ss << "_";

    ss << "" << endl;

    rep(h, -H, H) {

        ss << std::right << std::setw(2) << h << "|";

        int NW = min(sz(a[h]), 6ll);

        rep(w, -NW, NW) { if (abs(a[h][w]) == linf) ss << "   e" << ""; else ss << std::right << std::setw(4) << a[h][w]; }

        ss << "" << endl;

    }

    return ss.str();

}/*@formatter:on*/

template<class T> string out_m2(mvec<mvec<mvec<T> > > &a, ll H = inf, ll W = inf, ll U = inf) {

    stringstream ss;

    if (H == inf)H = 6;

    H = min(H, sz(a));

    rep(i, -H, H) {

        ss << endl;

        ss << out_m2(a[i], W, U, i);

    }

    return ss.str();

}



/*@formatter:off*/

template<class T> string out_m2(T &a) {stringstream ss;ss << a;return ss.str();}

/*@formatter:on*/

template<class T> string out_m(vector<T> &a, ll W = inf) {

    stringstream ss;

    if (W == inf)W = min(sz(a), 12ll);

    if (sz(a) == 0)return ss.str();

    rep(i, W) { ss << a[i] << " "; }

    ss << "" << endl;

    return ss.str();

}

/*@formatter:off*/

template<class T> string out_m(vector<vector<T> > &a, ll H = inf, ll W = inf, int key = -1) {H = min({H, sz(a), 12ll});W = min({W, sz(a[0]), 12ll});stringstream ss;ss << endl;if (key == -1)ss << " *|"; else ss << " " << key << "|";rep(w, W)ss << std::right << std::setw(4) << w;ss << "" << endl;rep(w, W * 4 + 3)ss << "_";ss << "" << endl;rep(h, H) {ss << std::right << std::setw(2) << h << "|";rep(w, min(sz(a[h]),12ll)) { if (abs(a[h][w]) == linf) ss << "   e" << ""; else ss << std::right << std::setw(4) << a[h][w]; }ss << "" << endl;}ss << endl;return ss.str();}

template<class T> string out_m(vector<vector<vector<T> > > &a, ll H = inf, ll W = inf, ll U = inf) {stringstream ss;    if (H == inf)H = 5;    H = min(H, sz(a));    rep(i, H) {        ss << endl;        ss << out_m(a[i], W, U, i);    }    ss << endl;    return ss.str();}

string out_m(int a) {stringstream ss;ss << a << endl;return ss.str();}

template<class T> string out_m(T &a) {stringstream ss;ss << a << endl;return ss.str();}

template<class T> void outv(vector<T> &a, ll W=inf) {cout << out_m(a,W) << endl;}

template<class T> void outv(vector<vector<T> > &a, ll H = linf, ll W = linf,int key=-1) {    cout << out_m(a,H,W,key) << endl;}

template<class T> void outv(vector<vector<vector<T> > > &a, ll H = linf, ll W = linf,ll U = linf) {cout << out_m(a,H,W,U)<< endl;}

#else

template<class T> void outv(vector<T> &a, ll W = inf) {

    rep(i, min(W, sz(a))) { cout << a[i] << " "; }

    cout << "" << endl;

}

template<class T> void outv(vector<vector<T> > &a, ll H = linf, ll W = linf, int key = -1) { rep(i, min(H, sz(a))) { outv(a[i], W); }}

template<class T> void outv(vector<vector<vector<T> > > &a, ll H = linf, ll W = linf, ll U = linf) { ; }

#define err(...);

#endif

template<class T> void outl(vector<T> &a, int n = inf) { rep(i, min(n, sz(a)))cout << a[i] << endl; }

//テーブルをスペースなしで出力

template<class T> void outt(vector<vector<T>> &a) {

    rep(i, sz(a)) {

        rep(j, sz(a[i])) { cout << a[i][j]; }

        cout << endl;

    }

}

//int型をbit表記で出力

void outb(int a) { cout << bitset<20>(a) << endl; }

template<class T> void na(vector<T> &a, ll n) {

    a.resize(n);

    rep(i, n)cin >> a[i];

}

template<class T> void na(set<T> &a, ll n) {

    rep(i, n)a.insert(in());

}

#define dna(a, n) vi a(n); rep(dnai,n) cin >> a[dnai];

#define dnad(a, n) vi a(n); rep(dnai,n) cin >> a[dnai],a[dnai]--;

template<class T> void nao(vector<T> &a, ll n) {

    a.resize(n + 1);

    a[0] = 0;

    rep(i, n)cin >> a[i + 1];

}

template<class T> void naod(vector<T> &a, ll n) {

    a.resize(n + 1);

    a[0] = 0;

    rep(i, n)cin >> a[i + 1], a[i + 1]--;

}

template<class T> void nad(vector<T> &a, ll n) {

    a.resize(n);

    rep(i, n)cin >> a[i], a[i]--;

}

template<class T> void nad(set<T> &a, ll n) {

    rep(i, n)a.insert(in()-1);

}

template<class T, class U> void na2(vector<T> &a, vector<U> &b, ll n) {

    a.resize(n);

    b.resize(n);

    rep(i, n)cin >> a[i] >> b[i];

}

template<class T, class U> void na2(set<T> &a, set<U> &b, ll n) {

    rep(i, n){

        a.insert(in());

        b.insert(in());

    }

}



#define dna2(a, b, n) vi a(n),b(n);rep(dna2i, n)cin >> a[dna2i] >> b[dna2i];

template<class T, class U> void nao2(vector<T> &a, vector<U> &b, ll n) {

    a.resize(n + 1);

    b.resize(n + 1);

    a[0] = b[0] = 0;

    rep(i, n)cin >> a[i + 1] >> b[i + 1];

}

#define dna2d(a, b, n) vi a(n),b(n);rep(dna2di, n){cin >> a[dna2di] >> b[dna2di];a[dna2di]--,b[dna2di]--;}

template<class T, class U> void na2d(vector<T> &a, vector<U> &b, ll n) {

    a.resize(n);

    b.resize(n);

    rep(i, n)cin >> a[i] >> b[i], a[i]--, b[i]--;

}

template<class T, class U, class W> void na3(vector<T> &a, vector<U> &b, vector<W> &c, ll n) {

    a.resize(n);

    b.resize(n);

    c.resize(n);

    rep(i, n)cin >> a[i] >> b[i] >> c[i];

}

#define dna3(a, b, c, n) vi a(n),b(n),c(n);   rep(dna3i, n)cin >> a[dna3i] >> b[dna3i] >> c[dna3i];

template<class T, class U, class W> void na3d(vector<T> &a, vector<U> &b, vector<W> &c, ll n) {

    a.resize(n);

    b.resize(n);

    c.resize(n);

    rep(i, n)cin >> a[i] >> b[i] >> c[i], a[i]--, b[i]--, c[i]--;

}

#define dna3d(a, b, c, n) vi a(n),b(n),c(n);  rep(dna3di, n){cin >> a[dna3di] >> b[dna3di] >> c[dna3di];a[dna3di]--,b[dna3di]--,c[dna3di]--;}

template<class T, class U, class W, class X> void na4(vector<T> &a, vector<U> &b, vector<W> &c, vector<X> &d, ll n) {

    a.resize(n);

    b.resize(n);

    c.resize(n);

    d.resize(n);

    rep(i, n)cin >> a[i] >> b[i] >> c[i] >> d[i];

}

#define dna4(a, b, c, d, n) vi a(n),b(n),c(n),d(n);   rep(dna4i, n)cin >> a[dna4i] >> b[dna4i] >> c[dna4i]>>d[dna4i];

#define dna4d(a, b, c, d, n) vi a(n),b(n),c(n),d(n);   rep(dna4i, n)cin >> a[dna4i] >> b[dna4i] >> c[dna4i]>>d[dna4i],--a[dna4i] ,-- b[dna4i],-- c[dna4i],--d[dna4i];

#define nt(a, h, w) resize(a,h,w);rep(nthi,h)rep(ntwi,w) cin >> a[nthi][ntwi];

#define ntd(a, h, w) resize(a,h,w);rep(ntdhi,h)rep(ntdwi,w) cin >> a[ntdhi][ntdwi], a[ntdhi][ntdwi]--;

#define ntp(a, h, w) resize(a,h+2,w+2);fill(a,'#');rep(ntphi,1,h+1)rep(ntpwi,1,w+1) cin >> a[ntphi][ntpwi];

//デバッグ

#define sp << " " <<



#define deb1(x)  debugName(x)<<" = "<<out_m2(x)

#define deb_2(x, ...) deb1(x) <<", "<< deb1(__VA_ARGS__)

#define deb_3(x, ...) deb1(x) <<", "<< deb_2(__VA_ARGS__)

#define deb_4(x, ...) deb1(x) <<", "<< deb_3(__VA_ARGS__)

#define deb5(x, ...) deb1(x) <<", "<< deb_4(__VA_ARGS__)

#define deb6(x, ...) deb1(x) <<", "<< deb5(__VA_ARGS__)

#define deb7(x, ...) deb1(x) <<", "<< deb6(__VA_ARGS__)

#define deb8(x, ...) deb1(x) <<", "<< deb7(__VA_ARGS__)

#define deb9(x, ...) deb1(x) <<", "<< deb8(__VA_ARGS__)

#define deb10(x, ...) deb1(x) <<", "<< deb9(__VA_ARGS__)





#ifdef _DEBUG

#define deb(...)  cerr<< over10(__VA_ARGS__,deb10,deb9,deb8,deb7,deb6,deb5,deb_4,deb_3,deb_2,deb1)(__VA_ARGS__) <<endl



#define base_keta 8

void print_n_base(int x,int base){    cerr<<bitset<base_keta>(x)<<endl;}

template<class T>void print_n_base(vector<T> X,int base){    cerr<<endl;    for(auto&& x:X){        print_n_base(x,base);    }    cerr<<endl;}



//n進数

#define deb2(x) cerr<<debugName(x)<<" = ";print_n_base(x, 2);

#define deb3(x) cerr<<debugName(x)<<" = ";print_n_base(x, 3);

#define deb4(x) cerr<<debugName(x)<<" = ";print_n_base(x, 4);



#else

#define deb(...) ;

#define deb2(...) ;

#define deb3(...) ;

#define deb4(...) ;

#endif





#define debugline(x) cerr << x << " " << "(L:" << __LINE__ << ")" << '\n'





//@formatter:off

//よく使うクラス、構造体

//graphでredefineしているため、書き換えたら向こうも書き換える

struct unionfind {

    vector<ll> par;

    vector<ll> siz;

    vector<ll> es;

    ll n, trees;//連結グループの数(親の種類)

    unionfind(ll n) : n(n), trees(n) {        par.resize(n);        siz.resize(n);        es.resize(n);        for (ll i = 0; i < n; i++) {            par[i] = i;            siz[i] = 1;        }    }

    ll root(ll x) { if (par[x] == x) { return x; } else { return par[x] = root(par[x]); }}

    ll operator()(ll x){return root(x);}

    bool unite(ll x, ll y) {

        x = root(x);

        y = root(y);

        es[x]++;

        if (x == y) return false;

        if (siz[x] > siz[y]) swap(x, y);

        trees--;

        par[x] = y;

        siz[y] += siz[x];

        es[y] += es[x];

        return true;

    }

    bool same(ll x, ll y) { return root(x) == root(y); }

    ll size(ll x) { return siz[root(x)]; }

    ll esize(ll x) { return es[root(x)]; }

    vi sizes(){        vi cou(n);        vi ret;        ret.reserve(n);        rep(i, n){            cou[root (i)]++;        }        rep(i, n){            if(cou[i])ret.push_back(cou[i]);        }        return ret;    }

    //つながりを無向グラフと見なし、xが閉路に含まれるか判定

    bool close(ll x) { return esize(x) >= size(x); }

    vector<vi> sets() {        vi ind(n, -1);        ll i = 0;        vvi(res, trees);        rep(j, n) {            ll r = root(j);            if (ind[r] == -1)ind[r] = i++;            res[ind[r]].push_back(j);        }        rep(i, trees) {            ll r = root(res[i][0]);            if (res[i][0] == r)continue;            rep(j, 1, sz(res[i])) {                if (res[i][j] == r) {                    swap(res[i][0], res[i][j]);                    break;                }            }        }        return res;    }

};//@formatter:off





using u32 = unsigned;

using u64 = unsigned long long;

using u128 = __uint128_t;



using bint =__int128;

std::ostream &operator<<(std::ostream &dest, __int128_t value) {    std::ostream::sentry s(dest);    if (s) {        __uint128_t tmp = value < 0 ? -value : value;        char buffer[128];        char *d = std::end(buffer);        do {            --d;            *d = "0123456789"[tmp % 10];            tmp /= 10;        } while (tmp != 0);        if (value < 0) {            --d;            *d = '-';        }        ll len = std::end(buffer) - d;        if (dest.rdbuf()->sputn(d, len) != len) { dest.setstate(std::ios_base::badbit); }    }    return dest;}

__int128 to_bint(string &s) {    __int128 ret = 0;    for (ll i = 0; i < s.length(); ++i)        if ('0' <= s[i] && s[i] <= '9')            ret = 10 * ret + s[i] - '0';    return ret;}

void operator>>(istream &iss, bint &v) {

    string S;

    iss>>S;

    v = 0;

    rep(i,sz(S)){

        v*=10;

        v +=  S[i]-'0';

    }

}

bint max(bint a, signed b){return max(a,(bint)b);}

bint max(signed a, bint b){return max((bint)a, b);}

bint max(bint a, ll b){return max(a,(bint)b);}

bint max(ll a, bint b){return max((bint)a, b);}

bint min(bint a, signed b){return min(a,(bint)b);}

bint min(signed a, bint b){return min((bint)a, b);}

bint min(bint a, ll b){return min(a,(bint)b);}

bint min(ll a, bint b){return min((bint)a, b);}

//エラー

void ole() {

#ifdef _DEBUG

    debugline("ole");    exit(0);

#endif

    string a = "a";    rep(i, 30)a += a;    rep(i, 1 << 17)cout << a << endl;    cout << "OLE 出力長制限超過" << endl;    exit(0);}

void re() {    assert(0 == 1);    exit(0);}

void tle() { while (inf)cout << inf << endl; }



//便利関数



//テスト用

#define rand xor128_

unsigned long xor128_(void){static unsigned long x=123456789,y=362436069,z=521288629,w=88675123;unsigned long t;t=(x^(x<<11));x=y;y=z;z=w; return( w=(w^(w>>19))^(t^(t>>8)) );}

char ranc() { return (char) ('a' + rand() % 26); }

ll rand(ll min, ll max) {    assert(min <= max);    if (min >= 0 && max >= 0) { return rand() % (max + 1 - min) + min; } else if (max < 0) { return -rand(-max, -min); } else { if (rand() % 2) { return rand(0, max); } else { return -rand(0, -min); }}}

ll rand(ll max){return rand(0,max);}

template<class T> T rand(vector<T>& A){return A[rand(sz(A)-1)];}

//重複することがある

template<class T> vector<T> ranv(vector<T>& A, int N){vector<T>ret(N);rep(i,N){ret[i]=rand(A);}return ret;}

template<class T> vector<T> ranv_unique(vector<T>& A, int N){    vector<T> ret(N);    umapi was;    rep(j,N){        int i;        while(1){            i = rand(sz(A)-1);            if(was.find(i) == was.end())break;        }        ret[j] = A[i];was[i]=1;    }    return ret;}

vi ranv(ll n, ll min, ll max) {    vi v(n);    rep(i, n)v[i] = rand(min, max);    return v;}

str ransu(ll n) {    str s;    rep(i, n)s += (char) rand('A', 'Z');    return s;}

str ransl(ll n) {    str s;    rep(i, n)s += (char) rand('a', 'z');    return s;}

//単調増加

vi ranvinc(ll n, ll min, ll max) {    vi v(n);    bool bad = 1;    while (bad) {        bad = 0;        v.resize(n);        rep(i, n) {            if (i && min > max - v[i - 1]) {                bad = 1;                break;            }            if (i)v[i] = v[i - 1] + rand(min, max - v[i - 1]); else v[i] = rand(min, max);        }    }    return v;}

//便利 汎用



void ranvlr(ll n, ll min, ll max, vi &l, vi &r) {    l.resize(n);    r.resize(n);    rep(i, n) {        l[i] = rand(min, max);        r[i] = l[i] + rand(0, max - l[i]);    }}

template<class T>vector<pair<T,int>> run_length(vector<T> &a) {vector<pair<T,int>> ret;ret.eb(a[0], 1);rep(i, 1, sz(a)) { if (ret.back().fi == a[i]) { ret.back().se++; } else { ret.eb(a[i], 1); }}return ret;}

vector<pair<char, ll>> run_length(string &a) {    vector<pair<char, ll>> ret;    ret.eb(a[0], 1);    rep(i, 1, sz(a)) { if (ret.back().fi == a[i]) { ret.back().se++; } else { ret.eb(a[i], 1); }}    return ret;}

template<class T, class F> T mgr(T ok, T ng, F f, int deb_ = 0) {    bool han = true;    if (deb_) {        if (ok < ng)            while (ng - ok > 1) {                T mid = (ok + ng) >> 1;                if (f(mid))ok = mid, han = true; else ng = mid, han = false;                deb(mid, han);            }        else            while (ok - ng > 1) {                T mid = (ok + ng) >> 1;                if (f(mid))ok = mid, han = true; else ng = mid, han = false;                deb(mid, han);            }    }else{        if (ok < ng)            while (ng - ok > 1) {                T mid = (ok + ng) >> 1;                if (f(mid))ok = mid, han = true; else ng = mid, han = false;            }        else            while (ok - ng > 1) {                T mid = (ok + ng) >> 1;                if (f(mid))ok = mid, han = true; else ng = mid, han = false;            }    }    return ok;}

template<class T, class F> T mgr(signed ok, T ng, F f) {

    return mgr((T)ok, ng, f);

}

template<class T, class F> T mgr(T ok, signed ng, F f) {

    return mgr(ok, (T)ng, f);

}

//[l, r)の中で,f(i)がtrueとなる範囲を返す okはそこに含まれる

template<class F> P mgr(int l, int r, F f, int ok) {    if (f(ok) == 0) {        out("f(ok) must true");        re();    }    return mp(mgr(ok, l - 1, f), mgr(ok, r, f) + 1);}



template<class F> dou mgrd(dou ok, dou ng, F f,int kai=100) {

    bool han = true;

    if (ok < ng)

        rep(i,kai) {

            dou mid = (ok + ng) /2;

            if (f(mid))ok = mid, han = true; else ng = mid, han = false;

            deb(mid,han);

        }

    else

        rep(i,kai) {

            dou mid = (ok + ng) /2;

            if (f(mid))ok = mid, han = true; else ng = mid, han = false;

            deb(mid,han);

        }

    return ok;

}

//strを整数として比較

string smax(str &a, str b) {    if (sz(a) < sz(b)) { return b; }    else if (sz(a) > sz(b)) { return a; }    else if (a < b)return b;    else return a;}

//strを整数として比較

string smin(str &a, str b) {    if (sz(a) > sz(b)) { return b; }    else if (sz(a) < sz(b)) { return a; }    else if (a > b)return b;    else return a;}

//エラー-1

template<typename W, typename T> ll find(vector<W> &a, int l, const T key) {rep(i, l, sz(a))if (a[i] == key)return i;return -1;}

template<typename W, typename T> ll find(vector<W> &a, const T key) {    rep(i, sz(a))if (a[i] == key)return i;    return -1;}

template<typename W, typename T> P find(vector<vector<W >> &a, const T key) {    rep(i, sz(a))rep(j, sz(a[0]))if (a[i][j] == key)return mp(i, j);    return mp(-1, -1);}

//getid(find())を返す 1次元にする

template<typename W, typename T> int findi(vector<vector<W >> &a, const T key) {    rep(i, sz(a))rep(j, sz(a[0]))if (a[i][j] == key)return i*sz(a[0])+j;    return -1;}

template<typename W, typename U> T find(vector<vector<vector<W >>> &a, const U key) {    rep(i, sz(a))rep(j, sz(a[0]))rep(k, sz(a[0][0]))if (a[i][j][k] == key)return mt(i, j, k);    return mt(-1, -1, -1);}

//stringも書く

int find(string& s, const string key){    int klen = sz(key);    rep(i,sz(s)-klen+1){        if(s[i]!=key[0])continue;        if(s.substr(i,klen) == key){            return i;        }    }    return -1;}

int find(string& s, int l, const string key){    int klen = sz(key);    rep(i, l, sz(s)-klen+1){        if(s[i]!=key[0])continue;        if(s.substr(i,klen) == key){            return i;        }    }    return -1;}

int find(string& s, const char key){    rep(i,sz(s)){        if(s[i]==key)return i;    }    return -1;}

int find(string& s, int l, const char key){    rep(i, l, sz(s)){        if(s[i]==key)return i;    }    return -1;}

template<typename W, typename T> ll count2(W &a, const T k) { return a == k; }

template<typename W, typename T> ll count2(vector<W> &a, const T k) {    ll ret = 0;    fora(v, a)ret += count2(v, k);    return ret;}

template<typename W, typename T> ll count(vector<W> &a, const T k) {    ll ret = 0;    fora(v, a)ret += count2(v, k);    return ret;}

vi count(vi &a) {    int ma = 0;    fora(v, a) {        if (ma < v)ma = v;    }    vi res(ma + 1);    fora(v, a) {        res[v]++;    }    return res;}

ll count(str &a, str k) {    ll ret = 0, len = k.length();    auto pos = a.find(k);    while (pos != string::npos)pos = a.find(k, pos + len), ++ret;    return ret;}

//'a' = 'A' = 0 として集計 既に-'a'されていても動く

vi count(str &a, int l, int r) {    vi cou(26);    char c = 'a';    if ('A' <= a[l] && a[l] <= 'Z')c = 'A';    if ('a' <= a[l] && a[l] <= 'z') c = 'a'; else c = 0;    rep(i, l, r)++cou[a[i] - c];    return cou;}

vi count(str &a, int r = inf){return count(a, 0, min(r, sz(a)));}

#define couif count_if

//algorythm



ll rev(ll a) {    ll res = 0;    while (a) {        res *= 10;        res += a % 10;        a /= 10;    }    return res;}

template<class T> void rev(vector<T> &a) { reverse(all(a)); }

template<class U> void rev(vector<vector<U>> &a) {    vector<vector<U> > b(sz(a[0]), vector<U>(sz(a)));    rep(h, sz(a)) rep(w, sz(a[0]))b[w][h] = a[h][w];    a = b;}

void  rev(string &a) { reverse(all(a)); }

constexpr ll p10[] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000ll, 100000000000ll, 1000000000000ll, 10000000000000ll, 100000000000000ll, 1000000000000000ll, 10000000000000000ll, 100000000000000000ll, 1000000000000000000ll};



//0は0桁

ll keta(ll v) {    if (v < p10[9]) { if (v < p10[4]) { if (v < p10[2]) { if (v < p10[1]) { if (v < p10[0])return 0; else return 1; } else return 2; } else { if (v < p10[3]) return 3; else return 4; }} else { if (v < p10[7]) { if (v < p10[5]) return 5; else if (v < p10[6])return 6; else return 7; } else { if (v < p10[8])return 8; else return 9; }}}    else {        if (v < p10[13]) { if (v < p10[11]) { if (v < p10[10]) return 10; else return 11; } else { if (v < p10[12]) return 12; else return 13; }}        else {            if (v < p10[15]) {                if (v < p10[14]) return 14;                else return 15;            } else {                if (v < p10[17]) {                    if (v < p10[16]) return 16;                    else return 17;                } else {                    if (v < p10[18])return 18;                    else return 19;                }            }        }    }}

ll getr(ll a, ll keta) { return (a / (ll) pow(10, keta)) % 10; }

//上から何桁目か

ll getl(ll a, ll ket) {int sketa = keta(a);return getr(a,sketa-1-ket);}

ll dsum(ll v,ll sin=10) {    ll ret = 0;    for (; v; v /= sin)ret += v % sin;    return ret;}



ll mask10(ll v) { return p10[v] - 1; }

//変換系

//[v] := iとなるようなvectorを返す

//存在しない物は-1

template<class T> auto keys(T a) {    vector<decltype((a.begin())->fi)> res;    for (auto &&k :a)res.push_back(k.fi);    return res;}

template<class T> auto values(T a) {    vector<decltype((a.begin())->se)> res;    for (auto &&k :a)res.push_back(k.se);    return res;}

template<class T, class U>  bool chma(T &a, const U &b) {    if (a < b) {        a = b;        return true;    }    return false;}

template<class T, class U>  bool chmi(T &a, const U &b) {    if (b < a) {        a = b;        return true;    }    return false;}

template<class T> constexpr T min(T a, signed b) { return a < b ? a : b; }

template<class T> constexpr  T max(T a, signed b) { return a < b ? b : a; }

template<class T> constexpr  T min(T a, T b, T c) { return a >= b ? b >= c ? c : b : a >= c ? c : a; }

template<class T> constexpr  T max(T a, T b, T c) { return a <= b ? b <= c ? c : b : a <= c ? c : a; }

template<class T>  T min(vector<T>& a) { return *min_element(all(a)); }

template<class T>  T mini(vector<T>& a) { return min_element(all(a)) - a.begin(); }

template<class T>  T min(vector<T>& a, ll n) { return *min_element(a.begin(), a.begin() + min(n, sz(a))); }

template<class T>  T min(vector<T>& a, ll s, ll n) { return *min_element(a.begin() + s, a.begin() + min(n, sz(a))); }

template<class T>  T max(vector<T>& a) { return *max_element(all(a)); }

template<class T,class U>  T max(vector<T>& a,vector<U>& b) { return max(*max_element(all(a)),*max_element(all(b))); }

template<class T>  T maxi(vector<T>& a) { return max_element(all(a)) - a.begin(); }

template<class T>  T max(vector<T>& a, ll n) { return *max_element(a.begin(), a.begin() + min(n, sz(a))); }

template<class T>  T max(vector<T>& a, ll s, ll n) { return *max_element(a.begin() + s, a.begin() + min(n, sz(a))); }

template<typename A, size_t N> A max(A (&a)[N]) {    A res = a[0];    rep(i, N)res = max(res, a[i]);    return res;}template<typename A, size_t N, size_t O> A max(A (&a)[N][O]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P> A max(A (&a)[N][O][P]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q> A max(A (&a)[N][O][P][Q], const T &v) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R> A max(A (&a)[N][O][P][Q][R]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S> A max(A (&a)[N][O][P][Q][R][S]) {    A res = max(a[0]);    rep(i, N)res = max(res, max(a[i]));    return res;}

template<typename A, size_t N> A min(A (&a)[N]) {    A res = a[0];    rep(i, N)res = min(res, a[i]);    return res;}template<typename A, size_t N, size_t O> A min(A (&a)[N][O]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P> A min(A (&a)[N][O][P]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q> A min(A (&a)[N][O][P][Q], const T &v) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R> A min(A (&a)[N][O][P][Q][R]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}template<typename A, size_t N, size_t O, size_t P, size_t Q, size_t R, size_t S> A min(A (&a)[N][O][P][Q][R][S]) {    A res = min(a[0]);    rep(i, N)res = min(res, min(a[i]));    return res;}

template<class T> T sum(vector<T> &v, ll s, ll t) {    T ret = 0;    rep(i, s, min(sz(v), t))ret += v[i];    return ret;}

template<class T> T sum(vector<T> &v, ll t = inf) { return sum(v, 0, t); }

template<class T> T sum(vector<vector<T> > &v, int s, int t) {T ret = 0;rep(i, s, min(sz(v), t))ret += sum(v[i]);return ret;}

template<class T> T sum(vector<vector<T> > &v, int t = inf) { return sum(v, 0, t); }

template<class T> T sum(vector<vector<vector<T>> > &v, int s, int t) {T ret = 0;rep(i, s, min(sz(v), t))ret += sum(v[i]);return ret;}

template<class T> T sum(vector<vector<vector<T>> > &v, int t = inf) { return sum(v, 0, t); }

template<class T> T sum(vector<vector<vector<vector<T>>> > &v, int s, int t) {T ret = 0;rep(i, s, min(sz(v), t))ret += sum(v[i]);return ret;}

template<class T> T sum(vector<vector<vector<vector<T>>> > &v, int t = inf) { return sum(v, 0, t); }

template<class T> T sum(vector<vector<vector<vector<vector<T>>>> > &v, int s, int t) {T ret = 0;rep(i, s, min(sz(v), t))ret += sum(v[i]);return ret;}

template<class T> T sum(vector<vector<vector<vector<vector<T>>>> > &v, int t = inf) { return sum(v, 0, t); }



template<class T> auto sum(priority_queue<T, vector<T>, greater<T> > &r) {    auto q = r;    T ret = 0;    while (sz(q)) {        ret += q.top();        q.pop();    }    return ret;}

template<class T> auto sum(priority_queue<T> &r) {    auto q = r;    T ret = 0;    while (sz(q)) {        ret += q.top();        q.pop();    }    return ret;}

template<class T> T mul(vector<T> &v, ll t = inf) {    T ret = v[0];    rep(i, 1, min(t, sz(v)))ret *= v[i];    return ret;}



//template<class T, class U, class... W>  auto sumn(vector<T> &v, U head, W... tail) {    auto ret = sum(v[0], tail...);    rep(i, 1, min(sz(v), head))ret += sum(v[i], tail...);    return ret;}

vi v_i(vi &a) {    int n = max(a) + 1;    vi ret(n, -1);    rep(i, sz(a)) {        ret[a[i]] = i;    }    return ret;}

void clear(PQ &q) { q = PQ(); }

void clear(priority_queue<int>&q) { q = priority_queue<int>();}

template<class T> void clear(queue<T> &q) { while (q.size())q.pop(); }

template<class T> T *negarr(ll size) {    T *body = (T *) malloc((size * 2 + 1) * sizeof(T));    return body + size;}

template<class T> T *negarr2(ll h, ll w) {    double **dummy1 = new double *[2 * h + 1];    double *dummy2 = new double[(2 * h + 1) * (2 * w + 1)];    dummy1[0] = dummy2 + w;    for (ll i = 1; i <= 2 * h + 1; ++i) { dummy1[i] = dummy1[i - 1] + 2 * w + 1; }    double **a = dummy1 + h;    return a;}

//imoは0-indexed

//ruiは1-indexed

template<class T> vector<T> imo(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)ret[i + 1] += ret[i];    return ret;}

//kと同じものの数

template<class T, class U> vi imo(vector<T> &a, U k) {vector<T> ret = a;rep(i, sz(ret))ret[i] = a[i] == k;rep(i, sz(ret) - 1)ret[i + 1] += ret[i];return ret;}

template<class T> vector<T> imox(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)ret[i + 1] ^= ret[i];    return ret;}

//漸化的に最小を持つ

template<class T> vector<T> imi(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)chmi(ret[i + 1], ret[i]);    return ret;}

template<class T> vector<T> ima(vector<T> &v) {    vector<T> ret = v;    rep(i, sz(ret) - 1)chma(ret[i + 1], ret[i]);    return ret;}

template<class T> vector<T> rimi(vector<T> &v) {    vector<T> ret = v;    rer(i, sz(ret) - 1, 1)chmi(ret[i - 1], ret[i]);    return ret;}

template<class T> vector<T> rima(vector<T> &v) {    vector<T> ret = v;    rer(i, sz(ret) - 1, 1)chma(ret[i - 1], ret[i]);    return ret;}

template<class T> struct ruiC {

    vector<T> rui;

    ruiC(vector<T> &ru) : rui(ru) {}

    /*先頭0*/

    ruiC() : rui(1, 0) {}

    T operator()(ll l, ll r) {        if (l > r) {            cerr << "ruic ";            deb(l, r);            assert(0);        }        return rui[r] - rui[l];    }

    T operator()(int r) { return operator()(0, r); }

    /*ruiv[]をruic[]に変えた際意味が変わるのがまずいため()と統一*/

    /*単体iを返す 累積でないことに注意(seg木との統一でこうしている)*/

//    T operator[](ll i) { return rui[i + 1] - rui[i]; }

    T operator[](ll i) { return rui[i]; }

    /*0から順に追加される必要がある*/

    void operator+=(T v) { rui.push_back(rui.back() + v); }

    void add(int i, T v) {if (sz(rui) - 1 != i)ole();operator+=(v);}

    T back() { return rui.back(); }

    ll size() { return rui.size(); }

    auto begin(){return rui.begin();}

    auto end(){return rui.end();}

};

template<class T> struct ruimax {template<typename Monoid>struct SegmentTree {        /*pairで処理*/        int sz;        vector<Monoid> seg;        const Monoid M1 = mp(MIN(T), -1);        Monoid f(Monoid a, Monoid b) {            return max(a, b);        }        void build(vector<T> &a) {            int n = sz(a);            sz = 1;            while (sz < n) sz <<= 1;            seg.assign(2 * sz, M1);            rep(i, n) { seg[i + sz] = mp(a[i], i); }            for (int k = sz - 1; k > 0; k--) {                seg[k] = f(seg[k << 1], seg[(k << 1) | 1]);            }        }        Monoid query(int a, int b) {            Monoid L = M1, R = M1;            for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {                if (a & 1) L = f(L, seg[a++]);                if (b & 1) R = f(seg[--b], R);            }            return f(L, R);        }        Monoid operator[](const int &k) const {            return seg[k + sz];        }    };private:vector<T> ve;SegmentTree<pair<T, int>> seg;vector<T> rv;vector<T> ri;bool build = false;

public:

    int n;

    ruimax(vector<T> &a) : ve(a), n(sz(a)) {        int index = -1;        int ma = MIN(T);        rv.resize(n + 1);        ri.resize(n + 1);        rv[0] = -linf;        ri[0] = -1;        rep(i, n) {            if (chma(ma, a[i])) {                index = i;            }            rv[i + 1] = ma;            ri[i + 1] = index;        }    }

    T operator()(int l, int r) {        if (!(l <= r && 0 <= l && r <= n)) {            deb(l, r, n);            assert(0);        }        if (l == 0) {            return rv[r];        } else {            if (!build)seg.build(ve), build = true;            return seg.query(l, r).first;        }    }

    T operator()(int r = inf) { return operator()(0, min(r, n)); }

    T operator[](int r) {        return operator()(0, r);    }

    T getv(int l, int r) {        return operator()(l, r);    }

    T geti(int l, int r) {        assert(l <= r && 0 <= l && r <= n);        if (l == 0) {            return ri[r];        } else {            if (!build)seg.build(ve), build = true;            return seg.query(l, r).second;        }    }

    T geti(int r = inf) { return geti(0, min(r,n)); };

    T getv(int r = inf) { return getv(0, min(r,n)); };

    auto begin(){return rv.begin();}

    auto end(){return rv.end();}

};

template<class T> struct ruimin {template<typename Monoid>    struct SegmentTree {  /*pairで処理*/         int sz;        vector<Monoid> seg;        const Monoid M1 = mp(MAX(T), -1);        Monoid f(Monoid a, Monoid b) {            return min(a, b);        }        void build(vector<T> &a) {            int n = sz(a);            sz = 1;            while (sz < n) sz <<= 1;            seg.assign(2 * sz, M1);            rep(i, n) { seg[i + sz] = mp(a[i], i); }            for (int k = sz - 1; k > 0; k--) {                seg[k] = f(seg[k << 1], seg[(k << 1) | 1]);            }        }        Monoid query(int a, int b) {            Monoid L = M1, R = M1;            for (a += sz, b += sz; a < b; a >>= 1, b >>= 1) {                if (a & 1) L = f(L, seg[a++]);                if (b & 1) R = f(seg[--b], R);            }            return f(L, R);        }        Monoid operator[](const int &k) const {            return seg[k + sz];        }    };private:vector<T> ve;SegmentTree<pair<T, int>> seg;vector<T> rv;vector<T> ri;bool build = false;int n;

public:

    ruimin(vector<T> &a) : ve(a), n(sz(a)) {        int index = -1;        int mi = MAX(T);        rv.resize(n + 1);        ri.resize(n + 1);        rv[0] = linf;        ri[0] = -1;        rep(i, n) {            if (chmi(mi, a[i])) {                index = i;            }            rv[i + 1] = mi;            ri[i + 1] = index;        }    }

    T operator()(int l, int r) {        assert(l <= r && 0 <= l && r <= n);        if (l == 0) {            return rv[r];        } else {            if (!build)seg.build(ve), build = true;            return seg.query(l, r).first;        }    }

    T operator()(int r = inf) { return operator()(0, min(r, n)); }

    T operator[](int r) {return operator()(0, r);}

    T getv(int l, int r) {        return operator()(l, r);    }

    T geti(int l, int r) {        assert(l <= r && 0 <= l && r <= n);        if (l == 0) {            return ri[r];        } else {            if (!build)seg.build(ve), build = true;            return seg.query(l, r).second;        }    }

    T geti(int r = inf) { return geti(0, min(r,n)); };

    T getv(int r = inf) { return getv(0, min(r,n)); };

    auto begin(){return rv.begin();}

    auto end(){return rv.end();}

};



template<class T>ostream &operator<<(ostream &os, ruiC<T> a) {fora(v,a.rui)os<<v<<" ";return os;}

template<class T> vector<T> ruiv(vector<T> &a) {    vector<T> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + a[i];    return ret;}

template<class T> ruiC<T> ruic() {return ruiC<T>();}

template<class T> ruiC<T> ruic(vector<T> &a) {    vector<T> ret = ruiv(a);    return ruiC<T>(ret);}

vvi() ruib(vi &a) {    vvi(res, 61, sz(a) + 1);    rep(k, 61) {        rep(i, sz(a)) {            res[k][i + 1] = res[k][i] + ((a[i] >> k) & 1);        }    }    return res;}

vector<ruiC<int>> ruibc(vi &a) {    vector<ruiC<int>> ret(61);    vvi(res, 61, sz(a));    rep(k, 61) {        rep(i, sz(a)) {            res[k][i] = (a[i] >> k) & 1;        }        ret[k] = ruic(res[k]);    }    return ret;}

vector<ll> ruiv(string &a) {    if (sz(a) == 0)return vi(1);    ll dec = ('0' <= a[0] && a[0] <= '9') ? '0' : 0;    vector<ll> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + a[i] - dec;    return ret;}

ruiC<ll> ruic(string &a) {    vector<ll> ret = ruiv(a);    return ruiC<ll>(ret);}

//kと同じものの数

template<class T, class U> vi ruiv(T &a, U k) {    vi ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] + (a[i] == k);    return ret;}

template<class T, class U> ruiC<ll> ruic(T &a, U k) {    vi ret = ruiv(a, k);    return ruiC<ll>(ret);}

template<class T> struct ruiC2 {

    int H;

    vector<ruiC<T>> rui;

    ruiC2(vector<vector<T>> &ru) : rui(sz(ru)),H(sz(ru)) {        for (int h = 0; h < H; h++){            rui[h] = ruic(ru[h]);        }    }

    //WについてHを返す

    vector<T> operator()(ll l, ll r) {        if (l > r) {            cerr << "ruic ";            deb(l, r);            assert(0);        }        vector<T> res(H);        for (int h = 0; h < H; h++)res[h]=rui[h](l, r);        return res;    }

    //HについてWを返す

    ruiC<T> operator[](ll h){ assert(h<H);return rui[h]; }

    //    vector<T> operator()(int r) { return operator()(0, r); }

    /*ruiv[]をruic[]に変えた際意味が変わるのがまずいため()と統一*/

    /*単体iを返す 累積でないことに注意(seg木との統一でこうしている)*/

//    T operator[](ll i) { return rui[i + 1] - rui[i]; }

    /*0から順に追加される必要がある*/

//    T back() { return rui.back(); }

//    ll size() { return rui.size(); }

//    auto begin(){return rui.begin();}

//    auto end(){return rui.end();}

};



//a~zを0~25として

// rui(l,r)でvector(26文字について, l~rのcの個数)

// rui[h] ruic()を返す

ruiC2<ll> ruicou(str &a) {    str s = a;    replace(s);    vector<ruiC<ll>> res(26);    vvi(cou, 26, sz(s));    rep(i, sz(s)) { cou[s[i]][i] = 1; }    return ruiC2<ll>(cou);}

ruiC2<ll> ruicou(vi &a) {    int H = max(a) + 1;    vector<ruiC<ll>> res(H);    vvi(cou, H, sz(a));    rep(i, sz(a)) { cou[a[i]][i] = 1; }    return ruiC2<ll>(cou);}



/*@formatter:off*/

//h query

template<class T> vector<T> imoh(vector<vector<T>> &v, int w) {vector<T> ret(sz(v));rep(h,sz(ret)){ret[h] = v[h][w];}rep(i, sz(ret) - 1){ret[i + 1] += ret[i];}return ret;}

template<class T> vector<T> ruih(vector<vector<T>> &v, int w) {vector<T> ret(sz(v) + 1);rep(h, sz(v)) { ret[h + 1] = v[h][w]; }rep(i, sz(v)) { ret[i + 1] += ret[i]; }return ret;}

template<class T> ruiC<T> ruihc(vector<vector<T>> &a, int w) {vector<T> ret = ruih(a, w);return ruiC<T>(ret);}



//xor

template<class T> struct ruixC {    vector<T> rui;    ruixC(vector<T> &ru) : rui(ru) {}    T operator()(ll l, ll r) {        if (l > r) {            cerr << "ruiXc ";            deb(l, r);            assert(0);        }        return rui[r] ^ rui[l];    }    T operator[](ll i) { return rui[i]; }    T back() { return rui.back(); }    ll size() { return rui.size(); }};

template<class T> vector<T> ruix(vector<T> &a) {    vector<T> ret(a.size() + 1);    rep(i, a.size())ret[i + 1] = ret[i] ^ a[i];    return ret;}

template<class T> ruixC<ll> ruixc(vector<T>  &a) {vi ret = ruix(a);return ruixC<ll>(ret);}

template<class T> vector<T> ruim(vector<T> &a) {    vector<T> res(a.size() + 1, 1);    rep(i, a.size())res[i + 1] = res[i] * a[i];    return res;}

//漸化的に最小を1indexで持つ

template<class T> vector<T> ruimi(vector<T> &a) {    ll n = sz(a);    vector<T> ret(n + 1);    rep(i, 1, n) {        ret[i] = a[i - 1];        chmi(ret[i + 1], ret[i]);    }    return ret;}

//template<class T> T *rrui(vector<T> &a) {

//右から左にかけての半開区間 (-1 n-1]

template<class T> struct rruiC {

    vector<T> rui;

    int n;

    rruiC(vector<T> &a) : n(sz(a)) {rui.resize(n + 1);rer(i, n - 1) {rui[i] = rui[i + 1] + a[i];}}

    /*[r l)*/

    T operator()(int r, int l) {r++;l++;assert(l <= r && l >= 0 && r <= n);return rui[l] - rui[r];}

    T operator()(int l) {return operator()(n - 1, l);}

    T operator[](int i) {return operator()(i);}

};

template<class T> ostream &operator<<(ostream &os, rruiC<T> a) {fora(v, a.rui)os << v << " ";return os;}



#define rrui rruic

template<class T> rruiC<T> rruic(vector<T> &a) { return rruiC<T>(a); }



//掛け算

template<class T> struct ruimulC {

    vector<T> rv;

    int n;

    ruimulC(vector<T> &a) : rv(a), n(sz(a)) {rv.resize(n + 1);rv[0] = 1;rep(i, n) { rv[i + 1] = a[i] * rv[i]; }}

    ruimulC() : n(0) {rv.resize(n + 1);rv[0] = 1;}

    void operator+=(T v) {rv.push_back(rv.back()*v);n++;}

    T operator()(int l, int r) {assert(l <= r && 0 <= l && r <= n);return rv[r] / rv[l];}

    T operator()(int r = inf) { return operator()(0, min(r, n)); }

    T operator[](int r) { return operator()(0, r); }

    auto begin() { return rv.begin(); }

    auto end() { return rv.end(); }

};

template<class T> ruimulC<T> ruimul(vector<T> &a) { return ruimulC<T>(a); }

template<class T> ruimulC<T> ruimul() {vector<T> a; return ruimulC<T>(a); }

/*@formatter:off*/

template<class T> T *rruim(vector<T> &a) {    ll len = a.size();    T *body = (T *) malloc((len + 1) * sizeof(T));    T *res = body + 1;    res[len - 1] = 1;    rer(i, len - 1)res[i - 1] = res[i] * a[i];    return res;}

template<class T, class U> void inc(pair<T,U> &a, U v = 1) { a.first += v,a.second+=v; }

template<class T, class U> void inc(T &a, U v = 1) { a += v; }

template<class T, class U = int> void inc(vector<T> &a, U v = 1) { for (auto &u:a)inc(u, v); }

template<class T, class U> void dec(T &a, U v = 1) { a -= v; }

template<class T, class U = int> void dec(vector<T> &a, U v = 1) { for (auto &u :a)dec(u, v); }

template<class U> void dec(string &a, U v = 1) { for (auto &u :a)dec(u, v); }

template<class T,class U, class W> void dec(vector<T> &a,vector<U> &b, W v = 1) { for (auto &u :a)dec(u, v);for (auto &u :b)dec(u, v); }

template<class T,class U,class W> void dec(vector<T> &a,vector<U> &b,vector<W>&c ) { for (auto &u :a)dec(u, 1);for (auto &u :b)dec(u, 1);for (auto &u :c)dec(u, 1); }

bool ins(ll h, ll w, ll H, ll W) { return h >= 0 && w >= 0 && h < H && w < W; }

bool san(ll l, ll v, ll r) { return l <= v && v < r; }

template<class T> bool ins(vector<T> &a, ll i, ll j = 0) { return san(0, i, sz(a)) && san(0, j, sz(a)); }

#define inside ins

ll u(ll a) { return a < 0 ? 0 : a; }

template<class T> vector<T> u(vector<T> &a) {    vector<T> ret = a;    fora(v, ret)v = u(v);    return ret;}



//添え字を返す

template<class F> ll goldd_l(ll left, ll right, F calc) {    double GRATIO = 1.6180339887498948482045868343656;    ll lm = left + (ll) ((right - left) / (GRATIO + 1.0));    ll rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));    ll fl = calc(lm);    ll fr = calc(rm);    while (right - left > 10) {        if (fl < fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + (ll) ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    ll minScore = MAX(ll);    ll resIndex = left;    for (ll i = left; i < right + 1; ++i) {        ll score = calc(i);        if (minScore > score) {            minScore = score;            resIndex = i;        }    }    return resIndex;}

template<class F> ll goldt_l(ll left, ll right, F calc) {        double GRATIO = 1.6180339887498948482045868343656;        ll lm = left + (ll) ((right - left) / (GRATIO + 1.0));        ll rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));        ll fl = calc(lm);        ll fr = calc(rm);        while (right - left > 10) {            if (fl > fr) {                right = rm;                rm = lm;                fr = fl;                lm = left + (ll) ((right - left) / (GRATIO + 1.0));                fl = calc(lm);            } else {                left = lm;                lm = rm;                fl = fr;                rm = lm + (ll) ((right - lm) / (GRATIO + 1.0));                fr = calc(rm);            }        }    if (left > right) {        ll l = left;        left = right;        right = l;    }    ll maxScore = MIN(ll);    ll resIndex = left;    for (ll i = left; i < right + 1; ++i) {        ll score = calc(i);        if (maxScore < score) {            maxScore = score;            resIndex = i;        }    }    return resIndex;}

/*loopは200にすればおそらく大丈夫 余裕なら300に*/

template<class F> dou goldd_d(dou left, dou right, F calc, ll loop = 200) {    dou GRATIO = 1.6180339887498948482045868343656;    dou lm = left + ((right - left) / (GRATIO + 1.0));    dou rm = lm + ((right - lm) / (GRATIO + 1.0));    dou fl = calc(lm);    dou fr = calc(rm);    /*200にすればおそらく大丈夫*/    /*余裕なら300に*/    ll k = 141;    loop++;    while (--loop) {        if (fl < fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    return left;}

template<class F> dou goldt_d(dou left, dou right, F calc, ll loop = 200) {    double GRATIO = 1.6180339887498948482045868343656;    dou lm = left + ((right - left) / (GRATIO + 1.0));    dou rm = lm + ((right - lm) / (GRATIO + 1.0));    dou fl = calc(lm);    dou fr = calc(rm);    loop++;    while (--loop) {        if (fl > fr) {            right = rm;            rm = lm;            fr = fl;            lm = left + ((right - left) / (GRATIO + 1.0));            fl = calc(lm);        } else {            left = lm;            lm = rm;            fl = fr;            rm = lm + ((right - lm) / (GRATIO + 1.0));            fr = calc(rm);        }    }    return left;}

//l ~ rを複数の区間に分割し、極致を与えるiを返す time-20 msまで探索

template<class F> ll goldd_ls(ll l, ll r, F calc, ll time = 2000) {    auto lim = milliseconds(time - 20);    ll mini = 0, minv = MAX(ll);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        ll haba = (r - l + k) / k;/*((r-l+1) + k-1) /k*/        ll nl = l;        ll nr = l + haba;        rep(i, k) {            ll ni = goldd_l(nl, nr, calc);            if (chmi(minv, calc(ni))) mini = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return mini;}

template<class F> ll goldt_ls(ll l, ll r, F calc, ll time = 2000) {    auto lim = milliseconds(time - 20);    ll maxi = 0, maxv = MIN(ll);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        ll haba = (r - l + k) / k;/*((r-l+1) + k-1) /k*/        ll nl = l;        ll nr = l + haba;        rep(i, k) {            ll ni = goldt_l(nl, nr, calc);            if (chma(maxv, calc(ni))) maxi = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return maxi;}

template<class F> dou goldd_d_s(dou l, dou r, F calc, ll time = 2000) {    /*20ms余裕を持つ*/    auto lim = milliseconds(time - 20);    dou mini = 0, minv = MAX(dou);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        dou haba = (r - l) / k;        dou nl = l;        dou nr = l + haba;        rep(i, k) {            dou ni = goldd_d(nl, nr, calc);            if (chmi(minv, calc(ni))) mini = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return mini;}

template<class F> dou goldt_d_s(dou l, dou r, F calc, ll time = 2000) {    /*20ms余裕を残している*/    auto lim = milliseconds(time - 20);    dou maxi = 0, maxv = MIN(dou);    /*区間をk分割する*/    rep(k, 1, inf) {        auto s = system_clock::now();        dou haba = (r - l) / k;        dou nl = l;        dou nr = l + haba;        rep(i, k) {            dou ni = goldt_d(nl, nr, calc);            if (chma(maxv, calc(ni))) maxi = ni;            nl = nr;            nr = nl + haba;        }        auto end = system_clock::now();        auto part = duration_cast<milliseconds>(end - s);        auto elapsed = duration_cast<milliseconds>(end - start_time);        if (elapsed + part * 2 >= lim) { break; }    }    return maxi;}

template<class T> T min(vector<vector<T >> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, *min_element(all(a[i])));    return res;}

template<class T> T max(vector<vector<T >> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, *max_element(all(a[i])));    return res;}

template<class T> T min(vector<vector<vector<T>>> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, min(a[i]));    return res;}

template<class T> T max(vector<vector<vector<T>>> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, max(a[i]));    return res;}

template<class T> T min(vector<vector<vector<vector<T>>>> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, min(a[i]));    return res;}

template<class T> T max(vector<vector<vector<vector<T>>>> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, max(a[i]));    return res;}

template<class T> T min(vector<vector<vector<vector<vector<T>>>>> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, min(a[i]));    return res;}

template<class T> T max(vector<vector<vector<vector<vector<T>>>>> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, max(a[i]));    return res;}

template<class T> T min(vector<vector<vector<vector<vector<vector<T>>>>>> &a) {    T res = MAX(T);    rep(i, a.size())chmi(res, min(a[i]));    return res;}

template<class T> T max(vector<vector<vector<vector<vector<vector<T>>>>>> &a) {    T res = MIN(T);    rep(i, a.size())chma(res, max(a[i]));    return res;}

//pow周りの仕様

//powiを使うと整数型

//powbを使うとbint型

//powを使うと powlに変換され long doubleが返る

#ifdef _DEBUG

auto pow(ll a,ll k){    static bool was = 1;    if(was){message +="if integer use *powi* it's very fast\n";}    was=0;    return powl(a,k);}

//上のメッセージを出すための関数

auto pow(signed a,ll k){    return pow((ll)a,k);}

auto pow(signed a,signed k){    return pow((ll)a,(ll)k);}

#else

#define pow powl



#endif

//整数型のpow

int powi(int a, int k) {    if (a == 2)return 1ll << k;    int res = 1;    int x = a;    while (k) {        if(k & 1)res *= x;        x *= x;        k >>= 1;    }    return res;}

//define pow powlより上に動かすとバグる

bint pow(bint a, ll k) {    bint res = 1;    bint x = a;    while (k) {        if(k & 1)res *= x;        x *= x;        k >>= 1;    }    return res;}

bint pow(bint a, signed k) {return pow(a,(ll)k);}

bint powb(int a, int b){return pow((bint)a,b);}

constexpr bool bget(ll m, ll keta) {

    #ifdef _DEBUG

        assert(keta<=62);//オーバーフロー 1^62までしか扱えない

    #endif

    return (m >> keta) & 1; }

//bget(n)次元

//                          NならN-1まで

vector<vi> bget2(vi& a,int keta_size){    vvi(res,keta_size,sz(a));    rep(k,keta_size){        rep(i, sz(a)){            res[k][i]=bget(a[i],k);        }    }    return res;}

vi bget1(vi& a,int keta){    vi res(sz(a));    rep(i, sz(a)){        res[i]=bget(a[i],keta);    }    return res;}

ll bget(ll m, ll keta, ll sinsuu) {    m /= (ll) pow(sinsuu, keta);    return m % sinsuu;}

constexpr ll bit(ll n) {

    #ifdef _DEBUG

        assert(n<=62);//オーバーフロー 1^62までしか扱えない

    #endif

    return (1LL << (n)); }

ll bit(ll n, ll sinsuu) { return (ll) pow(sinsuu, n); }

ll mask(ll n) { return (1ll << n) - 1; }

//aをbitに置きなおす

//{0, 2} -> 101

ll bit(vi&a){    int m=0;    for(auto&& v:a) m|=bit(v);    return m;}



//{1, 1, 0} -> 011

//bitsetに置き換える感覚 i が立っていたら i bit目を立てる

ll bit_bool(vi&a){    int m=0;    rep(i,sz(a)) if(a[i])m|=bit(i);    return m;}

#define bcou __builtin_popcountll

//最下位ビット

ll lbit(ll n) { return n & -n; }

ll lbiti(ll n) { return log2(n & -n); }

//最上位ビット

ll hbit(ll n) {    n |= (n >> 1);    n |= (n >> 2);    n |= (n >> 4);    n |= (n >> 8);    n |= (n >> 16);    n |= (n >> 32);    return n - (n >> 1);}

ll hbiti(ll n){return log2(hbit(n));}

ll hbitk(ll n) {    ll k = 0;    rer(i, 5) {        ll a = k + (1ll << i);        ll b = 1ll << a;        if (b <= n)k += 1ll << i;    }    return k;}

//初期化は0を渡す

ll nextComb(ll &mask, ll n, ll r) {    if (!mask)return mask = (1LL << r) - 1;    ll x = mask & -mask; /*最下位の1*/    ll y = mask + x; /*連続した下の1を繰り上がらせる*/    ll res = ((mask & ~y) / x >> 1) | y;    if (bget(res, n))return mask = 0; else return mask = res;}

//n桁以下でビットがr個立っているもののvectorを返す

vi bitCombList(ll n, ll r) {    vi res;    ll m = 0;    while (nextComb(m, n, r)) { res.push_back(m); }    return res;}

//masの立ってるindexを見る

#define forbit(i, mas) for (int forbitj = lbit(mas), forbitm = mas, i = log2(forbitj); forbitm; forbitm = forbitj ? forbitm ^ forbitj : 0, forbitj = lbit(forbitm), i = log2(forbitj))



char itoal(ll i) { return 'a' + i; }

char itoaL(ll i) { return 'A' + i; }

ll altoi(char c) {    if ('A' <= c && c <= 'Z')return c - 'A';    return c - 'a';}

ll ctoi(char c) { return c - '0'; }

char itoc(ll i) { return i + '0'; }

ll vtoi(vi &v) {    ll res = 0;    if (sz(v) > 18) {        debugline("vtoi");        deb(sz(v));        ole();    }    rep(i, sz(v)) {        res *= 10;        res += v[i];    }    return res;}

vi itov(ll i) {    vi res;    while (i) {        res.push_back(i % 10);        i /= 10;    }    rev(res);    return res;}

vi stov(string &a) {    ll n = sz(a);    vi ret(n);    rep(i, n) { ret[i] = a[i] - '0'; }    return ret;}

//基準を満たさないものは0になる

vi stov(string &a, char one) {    ll n = sz(a);    vi ret(n);    rep(i, n)ret[i] = a[i] == one;    return ret;}

vector<vector<ll>> ctoi(vector<vector<char>> s, char c) {    ll n = sz(s), m = sz(s[0]);    vector<vector<ll>> res(n, vector<ll>(m));    rep(i, n)rep(j, m)res[i][j] = s[i][j] == c;    return res;}

#define unique(v) v.erase( unique(v.begin(), v.end()), v.end() );

//[i] := vを返す

//aは0~n-1で置き換えられる

vi compress(vi &a) {    vi b;    ll len = a.size();    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) { a[i] = lower_bound(all(b), a[i]) - b.begin(); }    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, umap<ll, ll> &map) {    vi b;    ll len = a.size();    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) {        ll v = a[i];        a[i] = lower_bound(all(b), a[i]) - b.begin();        map[v] = a[i];    }    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, vi &r) {    vi b;    ll len = a.size();    fora(v, a)b.push_back(v);    fora(v, r)b.push_back(v);    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) a[i] = lower_bound(all(b), a[i]) - b.begin();    for (ll i = 0; i < sz(r); ++i) r[i] = lower_bound(all(b), r[i]) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vi &a, vi &r, vi &s) {    vi b;    ll len = a.size();    fora(v, a)b.push_back(v);    fora(v, r)b.push_back(v);    fora(v, s)b.push_back(v);    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) a[i] = lower_bound(all(b), a[i]) - b.begin();    for (ll i = 0; i < sz(r); ++i) r[i] = lower_bound(all(b), r[i]) - b.begin();    for (ll i = 0; i < sz(s); ++i) r[i] = lower_bound(all(b), s[i]) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vector<vi> &a) {    vi b;    fora(vv, a)fora(v, vv)b.push_back(v);    sort(b);    unique(b);    fora(vv, a)fora(v, vv)v = lower_bound(all(b), v) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

vi compress(vector<vector<vi >> &a) {    vi b;    fora(vvv, a)fora(vv, vvv)fora(v, vv)b.push_back(v);    sort(b);    unique(b);    fora(vvv, a)fora(vv, vvv)fora(v, vv)v = lower_bound(all(b), v) - b.begin();    ll blen = sz(b);    vi ret(blen);    rep(i, blen) { ret[i] = b[i]; }    return ret;}

void compress(ll a[], ll len) {    vi b;    for (ll i = 0; i < len; ++i) { b.push_back(a[i]); }    sort(b);    unique(b);    for (ll i = 0; i < len; ++i) { a[i] = lower_bound(all(b), a[i]) - b.begin(); }}

//要素が見つからなかったときに困る

#define binarySearch(a, v) (binary_search(all(a),v))

#define lowerIndex(a, v) (lower_bound(all(a),v)-a.begin())

#define upperIndex(a, v) (upper_bound(all(a),v)-a.begin())

#define rlowerIndex(a, v) (upper_bound(all(a),v)-a.begin()-1)

#define rupperIndex(a, v) (lower_bound(all(a),v)-a.begin()-1)



template<class T, class U, class W> T lowerBound(vector<T> &a, U v, W banpei) {auto it = lower_bound(a.begin(), a.end(), v);if (it == a.end())return banpei; else return *it;}template<class T, class U, class W> T lowerBound(ruiC<T> &a, U v, W banpei) {return lowerBound(a.rui, v, banpei);}

template<class T, class U, class W> T upperBound(vector<T>& a, U v, W banpei){    auto it = upper_bound(a.begin(),a.end(),v);    if(it==a.end())return banpei;    else return *it;}template<class T, class U, class W> T upperBound(ruiC<T> &a, U v, W banpei) {return upperBound(a.rui, v, banpei);}

template<class T, class U, class W> T rlowerBound(vector<T> &a, U v, W banpei) {    auto it = upper_bound(a.begin(), a.end(), v);    if (it == a.begin())return banpei;    else{        return *(--it);    }}template<class T, class U, class W> T rlowerBound(ruiC<T> &a, U v, W banpei) {return rlowerBound(a.rui, v, banpei);}

template<class T, class U, class W> T rupperBound(vector<T> &a, U v, W banpei) {    auto it = lower_bound(a.begin(), a.end(), v);    if (it == a.begin())return banpei;    else{        return *(--it);    }}template<class T, class U, class W> T rupperBound(ruiC<T> &a, U v, W banpei) {return rupperBound(a.rui, v, banpei);}

#define next2(a) next(next(a))

#define prev2(a) prev(prev(a))



//狭義の単調増加列 長さを返す

template<class T> int lis(vector<T> &a) {    int n = sz(a);    vi tail(n + 1, MAX(T));    rep(i, n) {        int id = lowerIndex(tail, a[i]);/**/        tail[id] = a[i];    }    return lowerIndex(tail, MAX(T));}

template<class T> int lis_eq(vector<T> &a) {    int n = sz(a);    vi tail(n + 1, MAX(T));    rep(i, n) {        int id = upperIndex(tail, a[i]);/**/        tail[id] = a[i];    }    return lowerIndex(tail, MAX(T));}



//iteratorを返す

//valueが1以上の物を返す 0は見つけ次第削除

//vを減らす場合 (*it).se--でいい

template<class T, class U, class V> auto lower_map(map<T, U> &m, V k) {    auto ret = m.lower_bound(k);    while (ret != m.end() && (*ret).second == 0) {        ret = m.erase(ret);    }    return ret;}

template<class T, class U, class V> auto upper_map(map<T, U> &m, V k) {    auto ret = m.upper_bound(k);    while (ret != m.end() && (*ret).second == 0) {        ret = m.erase(ret);    }    return ret;}

//存在しなければエラー

template<class T, class U, class V> auto rlower_map(map<T, U> &m, V k) {    auto ret = upper_map(m, k);    assert(ret != m.begin());    ret--;    while (1) {        if ((*ret).second != 0)break;        assert(ret != m.begin());        auto next = ret;        --next;        m.erase(ret);        ret = next;    }    return ret;}

template<class T, class U, class V> auto rupper_map(map<T, U> &m, V k) {    auto ret = lower_map(m, k);    assert(ret != m.begin());    ret--;    while (1) {        if ((*ret).second != 0)break;        assert(ret != m.begin());        auto next = ret;        --next;        m.erase(ret);        ret = next;    }    return ret;}



template<class... T> void fin(T... s) {out(s...); exit(0); }



//便利 数学 math

//sub ⊂ top

bool subset(int sub, int top) {return (sub & top) == sub;}

//-180 ~ 180 degree

double atand(double h, double w) {return atan2(h, w) / PI * 180;}

//% -mの場合、最小の正の数を返す

ll mod(ll a, ll m) {if (m < 0) m *= -1;return (a % m + m) % m;}

ll pow(ll a) { return a * a; };

ll fact(ll v) { return v <= 1 ? 1 : v * fact(v - 1); }

dou factd(int v){static vd fact(2,1);    if(sz(fact)<=v){        rep(i,sz(fact),v+1){            fact.push_back(fact.back()*i);        }    }    return fact[v];}



ll comi(ll n, ll r) {    assert(n < 100);    static vvi(pas, 100, 100);    if (pas[0][0])return pas[n][r];    pas[0][0] = 1;    rep(i, 1, 100) {        pas[i][0] = 1;        rep(j, 1, i + 1)pas[i][j] = pas[i - 1][j - 1] + pas[i - 1][j];    }    return pas[n][r];}

double comd2(ll n, ll r) {    static vvd(comb, 2020, 2020);    if (comb[0][0] == 0) {        comb[0][0] = 1;        rep(i, 2000) {            comb[i + 1][0] = 1;            rep(j, 1, i + 2) { comb[i + 1][j] = comb[i][j] + comb[i][j - 1]; }        }    }    return comb[n][r];}

double comd(int n, int r) {    if (r < 0 || r > n) return 0;    if (n < 2020)return comd2(n, r);    static vd fact(2, 1);    if (sz(fact) <= n) { rep(i, sz(fact), n + 1) { fact.push_back(fact.back() * i); }}    return fact[n] / fact[n - r] / fact[r];}



ll gcd(ll a, ll b) {while (b) a %= b, swap(a, b);return abs(a);}

ll gcd(vi b) {ll res = b[0];rep(i, 1, sz(b))res = gcd(b[i], res);return res;}

ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }

ll lcm(vi a) {ll res = a[0];rep(i, 1, sz(a))res = lcm(a[i], res);return res;}

ll ceil(ll a, ll b) {if (b == 0) {debugline("ceil");deb(a, b);ole();return -1;} else if (a < 0) { return 0; } else { return (a + b - 1) / b; }}



ll sig0(int t) { return t <= 0 ? 0 : ((1 + t) * t) >> 1; }

bint sig0(bint t) {return t <= 0 ? 0 : ((1 + t) * t) >> 1; }

//ll sig(ll s, ll t) { return ((s + t) * (t - s + 1)) >> 1; }

ll sig(ll s, ll t) {if (s > t)swap(s, t);return sig0(t - s) + s * (t - s + 1);}



#define tousa_i tosa_i

#define lower_tousa_i lower_tosa_i

#define upper_tousa upper_tosa

#define upper_tousa_i upper_tosa_i

ll tosa_i(ll st, ll ad, ll v) {    assert(((v - st) % ad) == 0);    return (v - st) / ad;}

ll tosa_s(ll st, ll ad, ll len) {    return st * len + sig0(len - 1) * ad;}



// ax + r (x は非負整数) で表せる整数のうち、v 以上となる最小の整数

ll lower_tosa(ll st, ll ad, ll v) {    if (st >= v) return st;    return (v - st + ad - 1) / ad * ad + st;}

//第何項か

ll lower_tosa_i(ll st, ll ad, ll v) {    if (st >= v) return 0;    return (v - st + ad - 1) / ad;}

ll upper_tosa(ll st, ll ad, ll v) { return lower_tosa(st, ad, v + 1); }

ll upper_tosa_i(ll st, ll ad, ll v) { return lower_tosa_i(st, ad, v + 1); }





//v * v >= aとなる最小のvを返す

ll sqrt(ll a) {    if (a < 0) {        debugline("sqrt");        deb(a);        ole();    }    ll res = (ll) std::sqrt(a);    while (res * res < a)++res;    return res;}

double log(double e, double x) { return log(x) / log(e); }



//b * res <= aを満たす [l, r)を返す

P drange_ika(int a, int b) {    assert(b);    if (a >= 0) {        if (b > 0)return mp(-linf, a / b + 1);        else return mp(-(a / -b), linf + 1);    } else {        if (b > 0)return mp(-linf, -ceil(-a, b) + 1);        else return mp(ceil(-a, -b), linf + 1);    }}



/*@formatter:off*/



//機能拡張

#define dtie(a, b) int a, b; tie(a, b)

template<class T, class U> string to_string(T a, U b) {    string res = "";    res += a;    res += b;    return res;}

template<class T, class U, class V> string to_string(T a, U b, V c) {    string res = "";    res += a;    res += b;    res += c;    return res;}

template<class T, class U, class V, class W> string to_string(T a, U b, V c, W d) {    string res = "";    res += a;    res += b;    res += c;    res += d;    return res;}

template<class T, class U, class V, class W, class X> string to_string(T a, U b, V c, W d, X e) {    string res = "";    res += a;    res += b;    res += c;    res += d;    res += e;    return res;}





constexpr int bsetlen = k5 * 2;

//constexpr int bsetlen = 5050;

#define bset bitset<bsetlen>

bool operator<(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] < b[i])return true;if (a[i] > b[i])return false;}return false;}

bool operator>(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] > b[i])return true;if (a[i] < b[i])return false;}return false;}

bool operator<=(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] < b[i])return true;if (a[i] > b[i])return false;}return true;}

bool operator>=(bitset<bsetlen> &a, bitset<bsetlen> &b) {rer(i, bsetlen - 1) {if (a[i] > b[i])return true;if (a[i] < b[i])return false;}return true;}

string operator~(string &a) {string res = a;for (auto &&c:res) {if (c == '0')c = '1';else if (c == '1')c = '0';else {cerr << "cant ~" << a << "must bit" << endl;exit(0);}}return res;}

ostream &operator<<(ostream &os, bset& a) {    bitset<10> b;    vi list;    rep(i,bsetlen){        if(a[i])list.push_back(i),b[i]=1;    }    os<<b<<", "<<list;    return os;}

int hbiti(bset&a){rer(i,bsetlen){if(a[i])return i;}return -1;}

#define hk(a, b, c) (a <= b && b < c)



//O(N/64)

bset nap(bset &a, int v) {bset r = a | a << v;return r;}

bset nap(bset &a, bset &v) {bset r = a;rep(i, bsetlen) {if (v[i])r |= a << i;}return r;}





template<class T> void seth(vector<vector<T>> &S, int w, vector<T> &v) {assert(sz(S) == sz(v));assert(w < sz(S[0]));rep(h, sz(S)) { S[h][w] = v[h]; }}



template<class T, class U> void operator+=(pair<T,U> &a, pair<T,U> & b) {a.fi+=b.fi;a.se+=b.se;}

template<class T, class U> pair<T,U> operator+(pair<T,U> &a, pair<T,U> & b) {return pair<T,U>(a.fi+b.fi,a.se+b.se);}



template<typename CharT, typename Traits, typename Alloc>basic_string<CharT, Traits, Alloc>operator+(const basic_string<CharT, Traits, Alloc> &lhs, const int rv) {    basic_string<CharT, Traits, Alloc> str(lhs);    str.append(to_string(rv));    return str;}template<typename CharT, typename Traits, typename Alloc>void operator+=(basic_string<CharT, Traits, Alloc> &lhs, const int rv) {    lhs += to_string(rv);}template<typename CharT, typename Traits, typename Alloc>basic_string<CharT, Traits, Alloc>operator+(const basic_string<CharT, Traits, Alloc> &lhs, const signed rv) {    basic_string<CharT, Traits, Alloc> str(lhs);    str.append(to_string(rv));    return str;}template<typename CharT, typename Traits, typename Alloc>void operator+=(basic_string<CharT, Traits, Alloc> &lhs, const signed rv) {    lhs += to_string(rv);}

template<typename CharT, typename Traits, typename Alloc> void operator*=(basic_string<CharT, Traits, Alloc> &s, int num) {auto bek = s;s = "";for (; num; num >>= 1) {if (num & 1) {s += bek;}bek += bek;}}

template<class T, class U> void operator+=(queue<T> &a, U v) { a.push(v); }template<class T, class U> void operator+=(deque<T> &a, U v) { a.push_back(v); }template<class T> priority_queue<T, vector<T>, greater<T> > &operator+=(priority_queue<T, vector<T>, greater<T> > &a, vector<T> &v) {    fora(d, v)a.push(d);    return a;}template<class T, class U> priority_queue<T, vector<T>, greater<T> > &operator+=(priority_queue<T, vector<T>, greater<T> > &a, U v) {    a.push(v);    return a;}template<class T, class U> priority_queue<T> &operator+=(priority_queue<T> &a, U v) {    a.push(v);    return a;}template<class T> set<T> &operator+=(set<T> &a, vector<T> v) {    fora(d, v)a.insert(d);    return a;}template<class T, class U> auto operator+=(set<T> &a, U v) { return a.insert(v); }template<class T, class U> auto operator-=(set<T> &a, U v) { return a.erase(v); }template<class T, class U> auto operator+=(mset<T> &a, U v) { return a.insert(v); }template<class T, class U> set<T, greater<T>> &operator+=(set<T, greater<T>> &a, U v) {    a.insert(v);    return a;}template<class T, class U> vector<T> &operator+=(vector<T> &a, U v) {    a.push_back(v);    return a;}template<class T, class U> vector<T> operator+(vector<T> &a, U v) {    vector<T> ret = a;    ret += v;    return ret;}template<class T, class U> vector<T> operator+(U v, vector<T> &a) {    vector<T> ret = a;    ret.insert(ret.begin(), v);    return ret;}template<class T> vector<T> operator+(vector<T> a, vector<T> b) {    vector<T> ret;    ret = a;    fora(v, b)ret += v;    return ret;}template<class T> vector<T> &operator+=(vector<T> &a, vector<T> &b) {    rep(i, sz(b)) {/*こうしないとa+=aで両辺が増え続けてバグる*/        a.push_back(b[i]); }    return a;}template<class T, class U> map<T, U> &operator+=(map<T, U> &a, map<T, U> &b) {    fora(bv, b) { a[bv.first] += bv.second; }    return a;}

template<class T> void operator+=(mset<T> &a, vector<T>& v) { for(auto&& u : v)a.insert(u); }

template<class T> void operator+=(set<T> &a, vector<T>& v) { for(auto&& u : v)a.insert(u); }

template<class T> void operator+=(vector<T> &a, set<T>& v) { for(auto&& u : v)a.emplace_back(u); }

template<class T> void operator+=(vector<T> &a, mset<T>& v) { for(auto&& u : v)a.emplace_back(u); }

template<class T> vector<T> &operator-=(vector<T> &a, vector <T> &b) {    if (sz(a) != sz(b)) {        debugline("vector<T> operator-=");        deb(a);        deb(b);        exit(0);    }    rep(i, sz(a))a[i] -= b[i];    return a;}

template<class T> vector<T> operator-(vector<T> &a, vector<T> &b) {    if (sz(a) != sz(b)) {        debugline("vector<T> operator-");        deb(a);        deb(b);        ole();    }    vector<T> res(sz(a));    rep(i, sz(a))res[i] = a[i] - b[i];    return res;}

template<class T, class U> void operator*=(vector<T> &a, U b) {    vector<T> ta = a;    rep(b-1){        a+=ta;    }}

template<typename T> void erase(vector<T> &v, unsigned ll i) { v.erase(v.begin() + i); }

template<typename T> void erase(vector<T> &v, unsigned ll s, unsigned ll e) { v.erase(v.begin() + s, v.begin() + e); }

template<class T, class U> void erase(map<T, U> &m, ll okl, ll ngr) { m.erase(m.lower_bound(okl), m.lower_bound(ngr)); }

template<class T> void erase(set<T> &m, ll okl, ll ngr) { m.erase(m.lower_bound(okl), m.lower_bound(ngr)); }

template<typename T> void erasen(vector<T> &v, unsigned ll s, unsigned ll n) { v.erase(v.begin() + s, v.begin() + s + n); }

template<typename T, typename U> void insert(vector<T> &v, unsigned ll i, U t) { v.insert(v.begin() + i, t); }

template<typename T, typename U> void push_front(vector<T> &v, U t) { v.insert(v.begin(), t); }

template<typename T, typename U> void insert(vector<T> &v, unsigned ll i, vector<T> list) { for (auto &&va:list)v.insert(v.begin() + i++, va); }

template<typename T> void insert(set<T> &v, vector<T> list) { for (auto &&va :list)v.insert(va); }

template<class T> T poll(set<T>& S){T ret = *S.begin();S.erase(S.begin());return ret;}

template<class T> T poll(mset<T>& S){T ret = *S.begin();S.erase(S.begin());return ret;}

template<class T> T poll_back(set<T>& S){T ret = *S.rbegin();S.erase(S.rbegin());return ret;}

template<class T> T poll_back(mset<T>& S){T ret = *S.rbegin();S.erase(S.rbegin());return ret;}

template<class T> T peek(set<T>& S){T ret = *S.begin();return ret;}

template<class T> T peek(mset<T>& S){T ret = *S.begin();return ret;}

template<class T> T peek_back(set<T>& S){T ret = *S.rbegin();return ret;}

template<class T> T peek_back(mset<T>& S){T ret = *S.rbegin();return ret;}

vector<string> split(const string a, const char deli) {    string b = a + deli;    ll l = 0, r = 0, n = b.size();    vector<string> res;    rep(i, n) {        if (b[i] == deli) {            r = i;            if (l < r)res.push_back(b.substr(l, r - l));            l = i + 1;        }    }    return res;}

vector<string> split(const string a, const string deli) {    vector<string> res;    ll kn = sz(deli);    std::string::size_type Pos(a.find(deli));    ll l = 0;    while (Pos != std::string::npos) {        if (Pos - l)res.push_back(a.substr(l, Pos - l));        l = Pos + kn;        Pos = a.find(deli, Pos + kn);    }    if (sz(a) - l)res.push_back(a.substr(l, sz(a) - l));    return res;}

ll stoi(string& s){return stol(s);}

void yn(bool a) { if (a)cout << "yes" << endl; else cout << "no" << endl; }

void Yn(bool a) { if (a)cout << "Yes" << endl; else cout << "No" << endl; }

void YN(bool a) { if (a)cout << "YES" << endl; else cout << "NO" << endl; }

void fyn(bool a) {    if (a)cout << "yes" << endl; else cout << "no" << endl;    exit(0);}

void fYn(bool a) {    if (a)cout << "Yes" << endl; else cout << "No" << endl;    exit(0);}

void fYN(bool a) {    if (a)cout << "YES" << endl; else cout << "NO" << endl;    exit(0);}

void fAb(bool a) { if(a)cout<<"Alice"<<endl;else cout<<"Bob";}

void Possible(bool a) {    if (a)cout << "Possible" << endl; else cout << "Impossible" << endl;    exit(0);}

void POSSIBLE(bool a) {    if (a)cout << "POSSIBLE" << endl; else cout << "IMPOSSIBLE" << endl;    exit(0);}

void fPossible(bool a) {    Possible(a);exit(0);}

void fPOSSIBLE(bool a) {    POSSIBLE(a);exit(0);}

template<typename T> class fixed_point        : T {public:    explicit constexpr fixed_point(T &&t) noexcept: T(std::forward<T>(t)) {}    template<typename... Args> constexpr decltype(auto) operator()(Args &&... args) const { return T::operator()(*this, std::forward<Args>(args)...); }};template<typename T> static inline constexpr decltype(auto) fix(T &&t) noexcept { return fixed_point<T>{std::forward<T>(t)}; }





//未分類

//0,2,1 1番目と2番目の次元を入れ替える

template<class T> auto irekae(vector<vector<vector<T> > > &A, int x, int y, int z) {

#define irekae_resize_loop(a, b, c) resize(res,a,b,c);rep(i,a)rep(j,b)rep(k,c)

    vector<vector<vector<T> > > res;    if (x == 0 && y == 1 && z == 2) {        res = A;    } else if (x == 0 && y == 2 && z == 1) {        irekae_resize_loop(sz(A), sz(A[0][0]), sz(A[0])) {                    res[i][j][k] = A[i][k][j];                }    } else if (x == 1 && y == 0 && z == 2) {        irekae_resize_loop(sz(A[0]), sz(A), sz(A[0][0])) {                    res[i][j][k] = A[j][i][k];                }    } else if (x == 1 && y == 2 && z == 0) {        irekae_resize_loop(sz(A[0]), sz(A[0][0]), sz(A)) {                    res[i][j][k] = A[k][i][j];                }    } else if (x == 2 && y == 0 && z == 1) {        irekae_resize_loop(sz(A[0][0]), sz(A), sz(A[0])) {                    res[i][j][k] = A[j][k][i];                }    } else if (x == 2 && y == 1 && z == 0) {        irekae_resize_loop(sz(A[0][0]), sz(A[0]), sz(A)) {                    res[i][j][k] = A[k][j][i];                }    }    return res;

#undef irekae_resize_loop

}

template<class T> auto irekae(vector<vector<T>>&A,int i=1,int j=0){    vvt(res,sz(A[0]),sz(A));    rep(i,sz(A)){        rep(j,sz(A[0])){            res[j][i]=A[i][j];        }    }    return res;}

//tou分割する

template<typename T> vector<vector<T>> cut(vector<T> &a, int tou = 2) {    int N = sz(a);    vector<vector<T>> res(tou);    int hab = N / tou;    vi lens(tou, hab);    rep(i, N % tou) { lens[tou - 1 - i]++; }    int l = 0;    rep(i, tou) {        int len = lens[i];        int r = l + len;        res[i].resize(len);        std::copy(a.begin() + l, a.begin() + r, res[i].begin());        l = r;    }    return res;}

//長さn毎に分割する

template<typename T> vector<vector<T>> cutn(vector<T> &a, int len) {    int N = sz(a);    vector<vector<T>> res(ceil(N, len));    vi lens(N / len, len);    if (N % len)lens.push_back(N % len);    int l = 0;    rep(i, sz(lens)) {        int len = lens[i];        int r = l + len;        res[i].resize(len);        std::copy(a.begin() + l, a.begin() + r, res[i].begin());        l = r;    }    return res;}

vi inds_(vi &a) {    int n = sz(a);    vb was(n);    vi res(n);    rep(i, n) {        assert(!was[a[i]]);        res[a[i]] = i;        was[a[i]] = true;    }    return res;}



//@起動時

struct initon {

    initon() {

        cin.tie(0);

        ios::sync_with_stdio(false);

        cout.setf(ios::fixed);

        cout.precision(16);

        srand((unsigned) clock() + (unsigned) time(NULL));

    };

} initonv;

#define pre prev

#define nex next



//gra mll pr

//上下左右

const string udlr = "udlr";

string UDLR = "UDLR";//x4と連動 UDLR.find('U') := x4[0]

//右、上が正

constexpr ll h4[] = {1, -1, 0, 0};

constexpr ll w4[] = {0, 0, -1, 1};

constexpr ll h8[] = {0, 1, 0, -1, -1, 1, 1, -1};

constexpr ll w8[] = {1, 0, -1, 0, 1, -1, 1, -1};

    int mei_inc(int h, int w, int H, int W, int i) {while (++i < 4) { if (inside(h + h4[i], w + w4[i], H, W))return i; }return i;}

#define mei(nh, nw, h, w) for (int i = mei_inc(h, w, H, W, -1), nh = i<4? h + h4[i] : 0, nw = i<4? w + w4[i] : 0; i < 4; i=mei_inc(h,w,H,W,i), nh = h+h4[i], nw = w+w4[i])



//グラフ内で #undef getid

//#define getidとしているため、ここを書き直したらgraphも書き直す

#define getid_2(h, w) (h * W + w)

#define getid_1(p) (p.first * W + p.second)

#define getid(...) over2(__VA_ARGS__, getid_2, getid_1) (__VA_ARGS__)

#define getp(id) mp(id / W, id % W)

//#define set_shuffle() std::random_device seed_gen;std::mt19937 engine(seed_gen())

//#define shuffle(a) std::shuffle((a).begin(), (a).end(), engine);

//1980 開始からtime ms経っていたらtrue

bool timeup(int time) {

    auto end_time = system_clock::now();

    auto part = duration_cast<milliseconds>(end_time - start_time);

    auto lim = milliseconds(time);

    return part >= lim;

}

void set_time() { past_time = system_clock::now(); }

//MS型(millisecqnds)で返る

//set_timeをしてからの時間

auto calc_time_milli() {    auto now = system_clock::now();    auto part = duration_cast<milliseconds>(now - past_time);    return part;}

auto calc_time_micro() {    auto now = system_clock::now();    auto part = duration_cast<microseconds>(now - past_time);    return part;}

auto calc_time_nano() {    auto now = system_clock::now();    auto part = duration_cast<nanoseconds>(now - past_time);    return part;}

bool calc_time(int zikan) { return calc_time_micro() >= microseconds(zikan); }

using MS=std::chrono::microseconds;

int div(microseconds a, microseconds b) { return a / b; }

int div(nanoseconds a, nanoseconds b) {    if (b < nanoseconds(1)) { return a / nanoseconds(1); }    int v = a / b;    return v;}

//set_time();

//rep(i,lim)shori



//lim*=time_nanbai();

//rep(i,lim)shoriと使う

//全体でmilliかかっていいときにlimを何倍してもう一回できるかを返す

int time_nanbai(int milli) {

    auto dec = duration_cast<nanoseconds>(past_time - start_time);

    auto part = calc_time_nano();

    auto can_time = nanoseconds(milli * 1000 * 1000);

    can_time -= part;

    can_time -= dec;

    return div(can_time, part);

}

/*@formatter:on*/

//vectorで取れる要素数

//bool=> 1e9 * 8.32

//int => 1e8 * 2.6

//ll  => 1e8 * 1.3

//3次元以上取るとメモリがヤバい

//static配列を使う



vvc (ba);

ll N, M, H, W;

vi A, B, C;





void solve() {

    in(N, M);

    vi K(M);

    vi V(M);

    rep(i, M) {

        in(V[i]);

        din(len);

        dnad(k, len);

        K[i] = bit(k);

        deb2(K[i]);

        deb(V[i]);

    }

    vi dp(bit(N), linf);

    dp[0] = 0;

    rep(m, bit(N)) {

        fora(k, v, K, V) {                                                                                                          /*@formatter:off*/fora_init(k,v,K,V );/*@formatter:on*/

            int nm = m | k;

            chmi(dp[nm], dp[m] + v);

        }

    }

    deb(dp);

    out(dp[bit(N) - 1] == linf ? -1 : dp[bit(N) - 1]);

}





auto my(ll n, vi &a) {

    return 0;

}



auto sister(ll n, vi &a) {

    ll ret = 0;

    return ret;

}



signed main() {

    solve();



#define arg n,a

#ifdef _DEBUG

    bool bad = 0;

    for (ll i = 0, ok = 1; i < k5 && ok; ++i) {

        ll n = rand(1, 8);

        vi a = ranv(n, 1, 10);

        auto myres = my(arg);

        auto res = sister(arg);

        ok = myres == res;

        if (!ok) {

            out(arg);

            cerr << "AC : " << res << endl;

            cerr << "MY  : " << myres << endl;

            bad = 1;





            break;

        }

    }

    if (!bad) {

//        cout << "完璧 : solveを書き直そう" << endl;

//        cout << "     : そして、solve()を呼び出すのだ" << endl;

//        cout << "     : cin>>n; na(a,n);も忘れるな" << endl;

    }

    if (sz(message)) {

        cerr << "****************************" << endl;

        cerr << message << endl;

        cerr << "****************************" << endl;

    }

#endif

    return 0;

};


// Fastest known solution for this problem: