func_code_string: #include <bits/stdc++.h>   using namespace std;   bool a[5][5];   int main() {     for (int i = 1; i < 4; ++i) {       for (int j = 1, x; j < 4; ++j) {         a[i][j] ^= 1;         cin >> x;         a[i][j] ^= (x & 1);         a[i + 1][j] ^= (x & 1);         a[i - 1][j] ^= (x & 1);         a[i][j + 1] ^= (x & 1);         a[i][j - 1] ^= (x & 1);       }     }     for (int i = 1; i < 4; ++i) {       for (int j = 1; j < 4; ++j) {         cout << a[i][j];       }       cout << endl;     }   }   