func_code_string: #include <bits/stdc++.h>   using namespace std;   const int mod = 1e9 + 7;   inline long long int rl() {     long long int res = 0, neg = 0;     char c = getchar();     while ((c <  0  || c >  9 ) && c !=  - ) c = getchar();     if (c ==  - ) neg = 1, c = getchar();     while (c >=  0  && c <=  9 ) {       res = (res << 1) + (res << 3) + c - 48;       c = getchar();     }     return neg ? -res : res;   }   inline void read(string &s) {     s =   ;     char c = getchar();     while (c !=   n ) {       s += c;       c = getchar();     }   }   int main() {     vector<std::vector<char> > a(9);     for (int i = 0; i < 9; ++i) {       for (int j = 0; j < 9; ++j) {         char c;         cin >> c;         a[i].push_back(c);       }     }     long long int x = rl() - 1, y = rl() - 1;     int i;     for (i = 3 * (x % 3); i < 3 * (x % 3 + 1); ++i)       for (int j = 3 * (y % 3); j < 3 * (y % 3 + 1); ++j) {         if (a[i][j] ==  . ) goto exit;       }   exit:;     if (i == 3 * (x % 3 + 1)) {       for (int i = 0; i < 9; ++i) {         for (int j = 0; j < 9; ++j) {           if (a[i][j] ==  . )             cout <<  ! ;           else             cout << a[i][j];           if (j % 3 == 2 && j != 8) cout <<    ;         }         cout <<   n ;         if (i % 3 == 2 && i != 8) cout <<   n ;       }     } else {       for (i = 3 * (x % 3); i < 3 * (x % 3 + 1); ++i)         for (int j = 3 * (y % 3); j < 3 * (y % 3 + 1); ++j) {           if (a[i][j] ==  . ) a[i][j] =  ! ;         }       for (int i = 0; i < 9; ++i) {         for (int j = 0; j < 9; ++j) {           cout << a[i][j];           if (j % 3 == 2 && j != 8) cout <<    ;         }         cout <<   n ;         if (i % 3 == 2 && i != 8) cout <<   n ;       }     }     return 0;   }   