func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, k;     cin >> n >> k;     vector<vector<int> > A(n, vector<int>(n));     int counter = 0;     int sum = 0;     for (int i = 0; i < n; i++) {       for (int j = 0; j < k - 1; j++) {         A[i][j] = ++counter;       }     }     for (int i = 0; i < n; i++) {       for (int j = k - 1; j < n; j++) {         A[i][j] = ++counter;       }     }     for (int i = 0; i < n; i++) {       sum += A[i][k - 1];     }     cout << sum << endl;     for (int i = 0; i < n; i++) {       for (int j = 0; j < n; j++) {         cout << A[i][j] <<    ;       }       cout <<   n ;     }     return 0;   }   