Problem p02609 (C++) — buggy submission, verdict: Runtime Error

#include <bits/stdc++.h>
#include <unistd.h>

#define fi first
#define se second
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i <= (n); ++i)
#define rrep(i, n) for (ll i = (n)-1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()
#define pb push_back
#define dame                                                                   \\
  {                                                                            \\
    puts("-1");                                                                \\
    return 0;                                                                  \\
  }
#define show(x) cerr << #x << " = " << x << endl;

using namespace std;
using ll = long long;
using ld = long double;
using pl = pair<ll, ll>;
ll LINF = 1000000000000000000;

typedef vector<ll> vl;
typedef vector<pl> vp;
template <class T> bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> bool chmin(T &a, const T &b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}

struct UnionFind {
  vector<int> d;
  UnionFind(int n = 0) : d(n, -1) {}
  int root(int x) {
    if (d[x] < 0)
      return x;
    return d[x] = root(d[x]);
  }
  bool unite(int x, int y) {
    x = root(x);
    y = root(y);
    if (x == y)
      return false;
    if (d[x] > d[y])
      swap(x, y);
    d[x] += d[y];
    d[y] = x;
    return true;
  }
  bool same(int x, int y) { return root(x) == root(y); }
  int size(int x) { return -d[root(x)]; }
  int factor_size() {
    int ans = 0;
    rep(i, d.size()) {
      if (d[i] < 0) {
        ans++;
      }
    }
    return ans;
  }
};

ll d[201][201];

void warshall_floyd(ll n) {
  rep(k, n) {
    rep(i, n) {
      rep(j, n) { d[i][j] = min(d[i][j], d[i][k] + d[k][j]); }
    }
  }
}

struct edge {
  ll to, cost;
};

struct dijkstra {
  ll V;
  vector<vector<edge>> G;
  vector<ll> d;

  dijkstra(ll n) { init(n); }

  void init(ll n) {
    V = n;
    G.resize(V);
    d.resize(V);
    rep(i, V) { d[i] = LINF; }
  }

  void add_edge(ll s, ll t, ll cost) {
    edge e;
    e.to = t, e.cost = cost;
    G[s].push_back(e);
  }

  void run(ll s) {
    rep(i, V) { d[i] = LINF; }
    d[s] = 0;
    priority_queue<pl, vector<pl>, greater<pl>> que;
    que.push(pl(0, s));
    while (!que.empty()) {
      pl p = que.top();
      que.pop();
      ll v = p.second;
      if (d[v] < p.first)
        continue;
      for (auto e : G[v]) {
        if (d[e.to] > d[v] + e.cost) {
          d[e.to] = d[v] + e.cost;
          que.push(pl(d[e.to], e.to));
        }
      }
    }
  }
};
// auto mod int
// https://youtu.be/L8grWxBlIZ4?t=9858
// https://youtu.be/ERZuLAxZffQ?t=4807 : optimize
// https://youtu.be/8uowVvQ_-Mo?t=1329 : division
const ll mod = 1000000007;
struct mint {
  ll x; // typedef long long ll;
  mint(ll x = 0) : x((x % mod + mod) % mod) {}
  mint operator-() const { return mint(-x); }
  mint &operator+=(const mint a) {
    if ((x += a.x) >= mod)
      x -= mod;
    return *this;
  }
  mint &operator-=(const mint a) {
    if ((x += mod - a.x) >= mod)
      x -= mod;
    return *this;
  }
  mint &operator*=(const mint a) {
    (x *= a.x) %= mod;
    return *this;
  }
  mint operator+(const mint a) const { return mint(*this) += a; }
  mint operator-(const mint a) const { return mint(*this) -= a; }
  mint operator*(const mint a) const { return mint(*this) *= a; }
  mint pow(ll t) const {
    if (!t)
      return 1;
    mint a = pow(t >> 1);
    a *= a;
    if (t & 1)
      a *= *this;
    return a;
  }

  // for prime mod
  mint inv() const { return pow(mod - 2); }
  mint &operator/=(const mint a) { return *this *= a.inv(); }
  mint operator/(const mint a) const { return mint(*this) /= a; }
};
istream &operator>>(istream &is, const mint &a) { return is >> a.x; }
ostream &operator<<(ostream &os, const mint &a) { return os << a.x; }
// combination mod prime
// https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619
struct combination {
  vector<mint> fact, ifact;
  combination(int n) : fact(n + 1), ifact(n + 1) {
    assert(n < mod);
    fact[0] = 1;
    for (int i = 1; i <= n; ++i)
      fact[i] = fact[i - 1] * i;
    ifact[n] = fact[n].inv();
    for (int i = n; i >= 1; --i)
      ifact[i - 1] = ifact[i] * i;
  }
  mint operator()(int n, int k) {
    if (k < 0 || k > n)
      return 0;
    return fact[n] * ifact[k] * ifact[n - k];
  }
} comb(200005);

// Sieve of Eratosthenes
// https://youtu.be/UTVg7wzMWQc?t=2774
struct Sieve {
  int n;
  vector<int> f, primes;
  Sieve(int n = 1) : n(n), f(n + 1) {
    f[0] = f[1] = -1;
    for (ll i = 2; i <= n; ++i) {
      if (f[i])
        continue;
      primes.push_back(i);
      f[i] = i;
      for (ll j = i * i; j <= n; j += i) {
        if (!f[j])
          f[j] = i;
      }
    }
  }
  bool isPrime(int x) { return f[x] == x; }
  vector<int> factorList(int x) {
    vector<int> res;
    while (x != 1) {
      res.push_back(f[x]);
      x /= f[x];
    }
    return res;
  }
  vector<pl> factor(int x) {
    vector<int> fl = factorList(x);
    if (fl.size() == 0)
      return {};
    vector<pl> res(1, pl(fl[0], 0));
    for (int p : fl) {
      if (res.back().first == p) {
        res.back().second++;
      } else {
        res.emplace_back(p, 1);
      }
    }
    return res;
  }
  vector<pair<ll, int>> factor(ll x) {
    vector<pair<ll, int>> res;
    for (int p : primes) {
      int y = 0;
      while (x % p == 0)
        x /= p, ++y;
      if (y != 0)
        res.emplace_back(p, y);
    }
    if (x != 1)
      res.emplace_back(x, 1);
    return res;
  }
};

using data = pair<ll, vector<ll>>;

int h, w;
ll xxx[1010][1010];
ll a[1010][1010];

ll dfs(int x, int y) {
  if (xxx[x][y] > 0)
    return xxx[x][y];

  int tate[4] = {1, -1, 0, 0};
  int yoko[4] = {0, 0, 1, -1};

  ll ret = 1LL;
  rep(i, 4) {
    if (x + yoko[i] < 0 || y + tate[i] < 0 || x + yoko[i] >= w ||
        y + tate[i] >= h)
      continue;
    if (a[x + yoko[i]][y + tate[i]] <= a[x][y])
      continue;
    // f = true;
    //  show(x);
    //  show(y);
    //  show(x+yoko[i]);
    //  show(y+tate[i]);
    ret += dfs(x + yoko[i], y + tate[i]);
    ret %= mod;
  }
  // if(!f) return ret;
  //  show(x);
  //  show(y);
  //  show(w);
  //  show(h);
  //  show(ret);
  return xxx[x][y] = ret;
}

map<ll, ll> m;

ll g(ll i) {
  // if(m[i]) return m[i];
  if (0 == i)
    return 0;

  // cnt++;
  ll j = i;
  ll ans = 0;
  while (j > 0) {
    if (j & 1)
      ans++;
    j /= 2;
  }

  // if(ans==0) return m[i] = 0;
  // return m[i] = g(i % ans) + 1;
  return g(i % ans) + 1;
}

int main() {
  ll n;
  cin >> n;

  string x;

  cin >> x;

  ll popcount = 0;
  rep(i, n) if (x[i] == '1') popcount++;

  vector<ll> f(n, 0);

  vector<ll> amari(n);
  vector<ll> amari_minus(n);

  ll keta = 1;
  ll keta_minus = 1;

  ll S = 0;

  if (popcount == 0) {
    rep(i, n) cout << 1 << endl;
    return 0;
  }

  if (popcount == 1) {
    rrep(i, n) {
      if (x[i] == '1') {
        S = keta % (popcount + 1);
      } else {
        amari[i] = keta % (popcount + 1);
      }
      keta *= 2;
      keta %= popcount + 1;
    }
    show(S);
    rep(i, n) {
      if (x[i] == '1') {
        cout << 0 << endl;
      } else {
        ll x = S + amari[i];
        x %= 2;
        cout << 1 + g(x) << endl;
      }
    }
    return 0;
  }

  rrep(i, n) {
    if (x[i] == '1') {
      amari[i] = keta % (popcount - 1);
      amari_minus[i] = keta_minus % (popcount + 1);
    } else {
      amari[i] = (-1) * keta % (popcount - 1);
      amari_minus[i] = (-1) * keta_minus % (popcount + 1);
    }
    keta *= 2;
    keta %= popcount - 1;
    keta_minus *= 2;
    keta_minus %= popcount + 1;
  }

  ll S_minus = 0;

  rep(i, n) {
    if (x[i] == '1') {
      S += amari[i];
      S %= popcount - 1;
      S_minus += amari_minus[i];
      S_minus %= popcount + 1;
    }
  }

  show(S);
  show(S_minus);

  rep(i, n) {
    if (x[i] == '1') {
      f[i] = S - amari[i];
      f[i] += popcount - 1;
      f[i] %= popcount - 1;
    } else {
      f[i] = S_minus - amari_minus[i];
      f[i] += popcount + 1;
      f[i] %= popcount + 1;
    }
    // show(f[i]);
    cout << 1 + g(f[i]) << endl;
  }

  // cout << ans << endl;
  return 0;
}


Error: 0

Fixed submission:

#include <bits/stdc++.h>
#include <unistd.h>

#define fi first
#define se second
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i <= (n); ++i)
#define rrep(i, n) for (ll i = (n)-1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()
#define pb push_back
#define dame                                                                   \\
  {                                                                            \\
    puts("-1");                                                                \\
    return 0;                                                                  \\
  }
#define show(x) cerr << #x << " = " << x << endl;

using namespace std;
using ll = long long;
using ld = long double;
using pl = pair<ll, ll>;
ll LINF = 1000000000000000000;

typedef vector<ll> vl;
typedef vector<pl> vp;
template <class T> bool chmax(T &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T> bool chmin(T &a, const T &b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
struct edge {
  ll to, cost;
};

struct dijkstra {
  ll V;
  vector<vector<edge>> G;
  vector<ll> d;

  dijkstra(ll n) { init(n); }

  void init(ll n) {
    V = n;
    G.resize(V);
    d.resize(V);
    rep(i, V) { d[i] = LINF; }
  }

  void add_edge(ll s, ll t, ll cost) {
    edge e;
    e.to = t, e.cost = cost;
    G[s].push_back(e);
  }

  void run(ll s) {
    rep(i, V) { d[i] = LINF; }
    d[s] = 0;
    priority_queue<pl, vector<pl>, greater<pl>> que;
    que.push(pl(0, s));
    while (!que.empty()) {
      pl p = que.top();
      que.pop();
      ll v = p.second;
      if (d[v] < p.first)
        continue;
      for (auto e : G[v]) {
        if (d[e.to] > d[v] + e.cost) {
          d[e.to] = d[v] + e.cost;
          que.push(pl(d[e.to], e.to));
        }
      }
    }
  }
};
// auto mod int
// https://youtu.be/L8grWxBlIZ4?t=9858
// https://youtu.be/ERZuLAxZffQ?t=4807 : optimize
// https://youtu.be/8uowVvQ_-Mo?t=1329 : division
const ll mod = 1000000007;
struct mint {
  ll x; // typedef long long ll;
  mint(ll x = 0) : x((x % mod + mod) % mod) {}
  mint operator-() const { return mint(-x); }
  mint &operator+=(const mint a) {
    if ((x += a.x) >= mod)
      x -= mod;
    return *this;
  }
  mint &operator-=(const mint a) {
    if ((x += mod - a.x) >= mod)
      x -= mod;
    return *this;
  }
  mint &operator*=(const mint a) {
    (x *= a.x) %= mod;
    return *this;
  }
  mint operator+(const mint a) const { return mint(*this) += a; }
  mint operator-(const mint a) const { return mint(*this) -= a; }
  mint operator*(const mint a) const { return mint(*this) *= a; }
  mint pow(ll t) const {
    if (!t)
      return 1;
    mint a = pow(t >> 1);
    a *= a;
    if (t & 1)
      a *= *this;
    return a;
  }

  // for prime mod
  mint inv() const { return pow(mod - 2); }
  mint &operator/=(const mint a) { return *this *= a.inv(); }
  mint operator/(const mint a) const { return mint(*this) /= a; }
};
istream &operator>>(istream &is, const mint &a) { return is >> a.x; }
ostream &operator<<(ostream &os, const mint &a) { return os << a.x; }
// combination mod prime
// https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619
struct combination {
  vector<mint> fact, ifact;
  combination(int n) : fact(n + 1), ifact(n + 1) {
    assert(n < mod);
    fact[0] = 1;
    for (int i = 1; i <= n; ++i)
      fact[i] = fact[i - 1] * i;
    ifact[n] = fact[n].inv();
    for (int i = n; i >= 1; --i)
      ifact[i - 1] = ifact[i] * i;
  }
  mint operator()(int n, int k) {
    if (k < 0 || k > n)
      return 0;
    return fact[n] * ifact[k] * ifact[n - k];
  }
} c(200005);

// Sieve of Eratosthenes
// https://youtu.be/UTVg7wzMWQc?t=2774
struct Sieve {
  int n;
  vector<int> f, primes;
  Sieve(int n = 1) : n(n), f(n + 1) {
    f[0] = f[1] = -1;
    for (ll i = 2; i <= n; ++i) {
      if (f[i])
        continue;
      primes.push_back(i);
      f[i] = i;
      for (ll j = i * i; j <= n; j += i) {
        if (!f[j])
          f[j] = i;
      }
    }
  }
  bool isPrime(int x) { return f[x] == x; }
  vector<int> factorList(int x) {
    vector<int> res;
    while (x != 1) {
      res.push_back(f[x]);
      x /= f[x];
    }
    return res;
  }
  vector<pl> factor(int x) {
    vector<int> fl = factorList(x);
    if (fl.size() == 0)
      return {};
    vector<pl> res(1, pl(fl[0], 0));
    for (int p : fl) {
      if (res.back().first == p) {
        res.back().second++;
      } else {
        res.emplace_back(p, 1);
      }
    }
    return res;
  }
  vector<pair<ll, int>> factor(ll x) {
    vector<pair<ll, int>> res;
    for (int p : primes) {
      int y = 0;
      while (x % p == 0)
        x /= p, ++y;
      if (y != 0)
        res.emplace_back(p, y);
    }
    if (x != 1)
      res.emplace_back(x, 1);
    return res;
  }
};

using data = pair<ll, vector<ll>>;

map<ll, ll> m;

ll fff(ll x, ll cnt) {
  if (cnt == 0)
    return 1;

  x = x % cnt;
  //  ans++;
  cnt = 0;
  ll tmp = x;
  // show(x);
  // show(cnt);

  while (tmp > 0) {
    if (tmp & 1)
      cnt++;
    tmp /= 2;
  }
  if (m[x] == 0)
    return m[x] = 1 + fff(x, cnt);
  else
    return m[x];
}

int main() {
  ll n;
  cin >> n;

  string s;
  cin >> s;

  ll num = 0;

  rep(i, n) {
    if (s[i] == '1')
      num++;
  }

  rep(i, n) {
    if (s[i] == '0') {
      s[i] = '1';
      ll x = stoll(s, 0, 2);
      num++;
      cout << fff(x, num) - 1 << endl;
      s[i] = '0';
      num--;
    } else {
      s[i] = '0';
      num--;
      //      show(s);
      ll x = stoll(s, 0, 2);
      // show(x);
      cout << fff(x, num) - 1 << endl;
      s[i] = '1';
      num++;
    }
  }
  // cout << ans << endl;

  return 0;
}