func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MAXN = 1010;   int ar[MAXN][MAXN], star[MAXN][MAXN];   int main() {     int n, m, t;     char a;     cin >> n >> m >> t;     for (int i = 1; i <= n; i++)       for (int j = 1; j <= m; j++) {         scanf(  %c , &a);         ar[i][j] = a -  0 ;       }     for (int i = 2; i < n; i++)       for (int j = 2; j < m; j++)         if (ar[i][j] && ar[i - 1][j] && ar[i][j - 1] && ar[i + 1][j] &&             ar[i][j + 1])           star[i][j] = 1;     for (int i = 1; i <= n; i++)       for (int j = 1; j <= m; j++)         star[i][j] += star[i][j - 1] + star[i - 1][j] - star[i - 1][j - 1];     long long tmp, fl, res = 0;     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= m; j++) {         tmp = 1;         for (int k = j - 2; k >= 1; k--) {           fl = 1;           while (fl && tmp < i - 1) {             fl = 0;             if (star[i - 1][j - 1] - star[tmp][j - 1] - star[i - 1][k] +                     star[tmp][k] >=                 t)               tmp++, fl = 1;           }           res += tmp - 1;         }       }     }     cout << res << endl;     return 0;   }   