func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int n, m, q;   long long int gcd(long long int t, long long int u) {     if (u == 0) {       return t;     }     return gcd(u, t % u);   }   int main() {     ios::sync_with_stdio(false);     cin.tie(NULL);     cin >> n >> m >> q;     long long int gcd_nm = gcd(n, m);     long long int a, b;     a = n / gcd_nm;     b = m / gcd_nm;     for (int i = 1; i <= q; i++) {       long long int sx, sy, ex, ey;       cin >> sx >> sy >> ex >> ey;       sy--;       ey--;       if (sx == 1) {         sy /= a;       } else {         sy /= b;       }       if (ex == 1) {         ey /= a;       } else {         ey /= b;       }       if (sy == ey) {         cout <<  YES  << endl;       } else {         cout <<  NO  << endl;       }     }     return 0;   }   