func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     string x, y;     cin >> x >> y;     int n, m;     n = x.size(), m = y.size();     if (n != m) {       cout <<  NO ;       return 0;     }     if (n == 1) {       if (x == y)         cout <<  YES ;       else         cout <<  NO ;       return 0;     }     if (x == y) {       cout <<  YES ;       return 0;     }     int cnt = count(x.begin(), x.end(),  0 );     int cnt1 = count(y.begin(), y.end(),  0 );     if (cnt == n || cnt1 == n)       cout <<  NO ;     else       cout <<  YES ;   }   