func_code_string: #include <bits/stdc++.h>   using namespace std;   using lli = long long;   using Double = long double;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     string s[9][3];     for (int i = 0; i < 9; ++i) {       for (int j = 0; j < 3; ++j) {         cin >> s[i][j];       }     }     int x, y, cnt = 0;     cin >> x >> y, --x, --y;     for (auto c : s[x % 3 * 3][y % 3]) cnt += c ==  . ;     for (auto c : s[x % 3 * 3 + 1][y % 3]) cnt += c ==  . ;     for (auto c : s[x % 3 * 3 + 2][y % 3]) cnt += c ==  . ;     if (cnt == 0) {       for (int i = 0; i < 9; ++i) {         for (int j = 0; j < 3; ++j) {           for (auto c : s[i][j]) {             cout << (c ==  .  ?  !  : c);           }           cout <<    n [j == 2];         }         if (i % 3 == 2) cout <<   n ;       }     } else {       for (int i = 0; i < 9; ++i) {         for (int j = 0; j < 3; ++j) {           for (auto c : s[i][j]) {             cout << (c ==  .  and i / 3 == x % 3 and j == y % 3 ?  !  : c);           }           cout <<    n [j == 2];         }         if (i % 3 == 2) cout <<   n ;       }     }     return 0;   }   