func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       string a, b, c;       cin >> a >> b >> c;       int i = 0, flag = 0;       for (; i < a.size(); i++) {         if ((a[i] == c[i] || b[i] == c[i]) || (a[i] == c[i] && b[i] == c[i])) {           flag = 0;         } else {           flag = 1;           break;         }       }       if (flag == 0) {         cout <<  YES n ;       } else         cout <<  NO n ;     }     return 0;   }   