func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     int a[10][10];     for (int i = 0; i < 3; i++) {       for (int j = 0; j < 3; j++) {         cin >> a[i][j];       }     }     int x1 = a[0][1] + a[0][2];     int x2 = a[1][0] + a[1][2];     int x3 = a[2][0] + a[2][1];     int y = (x1 + x2 + x3) / 2;     a[0][0] = y - x1;     a[1][1] = y - x2;     a[2][2] = y - x3;     for (int i = 0; i < 3; i++) {       for (int j = 0; j < 3; j++) {         cout << a[i][j] <<    ;       }       cout <<   n ;     }     return 0;   }   