#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto& a : x)

#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound

#define sz(x) (int)x.size()
#define beg(x) x.begin()
#define en(x) x.end()
#define all(x) beg(x), en(x)
#define resz resize

const int MOD = 998244353;
const ll INF = 1e18;
const int MX = 100001;
const ld PI = 4*atan((ld)1);

template<class T> void ckmin(T &a, T b) { a = min(a, b); }
template<class T> void ckmax(T &a, T b) { a = max(a, b); }

namespace io {
    // TYPE ID (StackOverflow)
    
    template<class T> struct like_array : is_array<T>{};
    template<class T, size_t N> struct like_array<array<T,N>> : true_type{};
    template<class T> struct like_array<vector<T>> : true_type{};
    template<class T> bool is_like_array(const T& a) { return like_array<T>::value; }

    // I/O 
    
    void setIn(string s) { freopen(s.c_str(),"r",stdin); }
    void setOut(string s) { freopen(s.c_str(),"w",stdout); }
    void setIO(string s = "") {
        ios_base::sync_with_stdio(0); cin.tie(0);
        if (sz(s)) { setIn(s+".in"), setOut(s+".out"); }
    }
    
    // INPUT 
    
    template<class T> void re(T& x) { cin >> x; }
    template<class Arg, class... Args> void re(Arg& first, Args&... rest);
    void re(double& x) { string t; re(t); x = stod(t); }
    void re(ld& x) { string t; re(t); x = stold(t); }
    
    template<class T> void re(complex<T>& x);
    template<class T1, class T2> void re(pair<T1,T2>& p);
    template<class T> void re(vector<T>& a);
    template<class T, size_t SZ> void re(array<T,SZ>& a);
    
    template<class Arg, class... Args> void re(Arg& first, Args&... rest) { re(first); re(rest...); }
    template<class T> void re(complex<T>& x) { T a,b; re(a,b); x = cd(a,b); }
    template<class T1, class T2> void re(pair<T1,T2>& p) { re(p.f,p.s); }
    template<class T> void re(vector<T>& a) { F0R(i,sz(a)) re(a[i]); }
    template<class T, size_t SZ> void re(array<T,SZ>& a) { F0R(i,SZ) re(a[i]); }
    
    // OUTPUT 
    
    template<class T1, class T2> ostream& operator<<(ostream& os, const pair<T1,T2>& a) {
        os << '{' << a.f << ", " << a.s << '}'; return os;
    }
    template<class T> ostream& printArray(ostream& os, const T& a, int SZ) {
        os << '{';
        F0R(i,SZ) {
            if (i) {
                os << ", ";
                if (is_like_array(a[i])) cout << "\n";
            }
            os << a[i];
        }
        os << '}';
        return os;
    }
    template<class T, size_t SZ> ostream& operator<<(ostream& os, const array<T,SZ>& a) {
        return printArray(os,a,SZ);
    }
    template<class T> ostream& operator<<(ostream& os, const vector<T>& a) {
        return printArray(os,a,sz(a));
    }
    template<class T> ostream& operator<<(ostream& os, const set<T>& a) {
        os << vector<T>(all(a)); return os;
    }
    template<class T1, class T2> ostream& operator<<(ostream& os, const map<T1,T2>& a) {
        os << vector<pair<T1,T2>>(all(a)); return os;
    }
    
    template<class T> void pr(const T& x) { cout << x << '\n'; }
    template<class Arg, class... Args> void pr(const Arg& first, const Args&... rest) { 
        cout << first << ' '; pr(rest...); 
    }
}

using namespace io;


namespace modOp {
    int ad(int a, int b, int mod = MOD) { return (a+b)%mod; }
    int sub(int a, int b, int mod = MOD) { return (a-b+mod)%mod; }
    int mul(int a, int b, int mod = MOD) { return (ll)a*b%mod; }
    
    int AD(int& a, int b, int mod = MOD) { return a = ad(a,b,mod); }
    int SUB(int& a, int b, int mod = MOD) { return a = sub(a,b,mod); }
    int MUL(int& a, int b, int mod = MOD) { return a = mul(a,b,mod); }
    
    int po (int b, int p, int mod = MOD) { return !p?1:mul(po(mul(b,b,mod),p/2,mod),p&1?b:1,mod); }
    int inv (int b, int mod = MOD) { return po(b,mod-2,mod); }
    
    int invGeneral(int a, int b) { // 0 < a < b, gcd(a,b) = 1
        if (a == 0) return b == 1 ? 0 : -1;
        int x = invGeneral(b%a,a); 
        return x == -1 ? -1 : ((1-(ll)b*x)/a+b)%b;
    }
}

using namespace modOp;

vpl factor(ll x) {
    return {{x,1}};
}

template<int SZ> struct combo {
    int MOD, fac[SZ+1], ifac[SZ+1];
    vpl factors;
    vi cnt[SZ+1];
    
    void init(ll _MOD) {
        MOD = _MOD; factors = factor(MOD);
        cnt[0].resize(sz(factors));
        
        fac[0] = ifac[0] = 1;
        FOR(i,1,SZ+1) {
            cnt[i] = cnt[i-1];
            
            int I = i;
            F0R(j,sz(factors)) 
                while (I % factors[j].f == 0) 
                    I /= factors[j].f, cnt[i][j] ++;
                
            fac[i] = mul(I,fac[i-1],MOD), ifac[i] = invGeneral(fac[i],MOD);
        }
    }
    
    ll comb(ll a, ll b) {
        if (a == b) return 1;
        if (a < b || b < 0) return 0;
        ll tmp = mul(mul(fac[a],ifac[b],MOD),ifac[a-b],MOD);
        return tmp;
    }
};

combo<400005> z;
int N,M,ans;
string A,B,C,D;

bool zero(string s) {
    trav(x,s) if (x == '1') return 0;
    return 1;
}

int numOne(string s) {
    int ret = 0;
    trav(x,s) ret += (x == '1');
    return ret;
}

int l[MX], r[MX];

int calc(int a, int b, int c) {
    if (c == 0) return a+b == 0;
    return z.comb(a+b+c-1,c-1);
    int ret = 0;
    F0R(i,c) AD(ret,mul(z.comb(a-1+i,a-1),z.comb(b+c-1-i,b)));
    return ret;
}

void test() {
    if (zero(A) && zero(B)) return;
    int a = 0, b = 0, c = numOne(C);
    F0R(i,N) {
        l[i] = 0;
        if (A[i] == '1' || B[i] == '1') {
            l[i] = calc(a,b,c);
            a += (A[i] == '1');
            b += (B[i] == '1');
        }
    }
    a = 0, b = 0; int d = numOne(D);
    F0Rd(i,N) {
        r[i] = 0;
        if (A[i] == '1' || B[i] == '1') {
            r[i] = calc(a,b,d);
            a += (A[i] == '1');
            b += (B[i] == '1');
        }
    }
    int sum = 0;
    F0Rd(i,N) {
        AD(sum,r[i]);
        if (A[i] == '1' && B[i] == '1') MUL(sum,2);
        AD(ans,mul(sum,l[i]));
    }
}

int main() {
    // you should actually read the stuff at the bottom
    setIO(); re(N,M,A,B,C,D); // 4,6,7: bad
    z.init(MOD);
    if (zero(A) && zero(B) && zero(C) && zero(D)) {
        pr(1);
        exit(0);
    }
    test();
    swap(A,C), swap(B,D); swap(N,M);
    test();
    pr(ans);
    // FOR(a,1,6) FOR(b,1,6) pr(a,b,5,calc(a,b,5));
    // you should actually read the stuff at the bottom
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?), set tle
    * do smth instead of nothing and stay organized
*/


Measured memory_bytes: 26828