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 n = a.size();       bool Ok = true;       for (int i = 0; i < n; i++) Ok &= (c[i] == a[i] || b[i] == c[i]);       puts(Ok ?  YES  :  NO );     }   }   