func_code_string: #include <bits/stdc++.h>   using namespace std;   const double PI = acos(-1.0);   const int inf = 0x3f3f3f3f;   int n, k, a[510][510];   int main() {     while (~scanf( %d%d , &n, &k)) {       int top = 1, ans = 0;       for (int i = 1; i <= n; i++) {         for (int j = 1; j < k; j++) {           a[i][j] = top++;         }       }       for (int i = 1; i <= n; i++) {         for (int j = k; j <= n; j++) {           if (j == k) ans += top;           a[i][j] = top++;         }       }       printf( %d n , ans);       for (int i = 1; i <= n; i++) {         for (int j = 1; j <= n; j++) {           printf( %d , a[i][j]);           if (j == n)             putchar(  n );           else             putchar(   );         }       }     }   }   