func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x11, x12, x13, x21, x22, x23, x31, x32, x33;     cin >> x11 >> x12 >> x13 >> x21 >> x22 >> x23 >> x31 >> x32 >> x33;     int sum = (x12 + x13 + x21 + x23 + x31 + x32) / 2;     x11 = sum - x12 - x13;     x22 = sum - x21 - x23;     x33 = sum - x31 - x32;     cout << x11 <<     << x12 <<     << x13 << endl;     cout << x21 <<     << x22 <<     << x23 << endl;     cout << x31 <<     << x32 <<     << x33 << endl;   }   