func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     bool a[5][5];     int b[3][3];     for (int i = 0; i < 3; i++)       for (int j = 0; j < 3; j++) {         cin >> b[i][j];         a[i + 1][j + 1] = true;       }     for (int i = 0; i < 3; i++)       for (int j = 0; j < 3; j++) {         if (b[i][j] % 2) {           a[i + 1][j + 1] = !a[i + 1][j + 1];           a[i][j + 1] = !a[i][j + 1];           a[i + 1][j] = !a[i + 1][j];           a[i + 2][j + 1] = !a[i + 2][j + 1];           a[i + 1][j + 2] = !a[i + 1][j + 2];         }       }     for (int i = 0; i < 3; i++) {       for (int j = 0; j < 3; j++) {         cout << a[i + 1][j + 1];       }       cout << endl;     }     return 0;   }   