func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m, s, C[1001][2001];   int main() {     for (int i = 0; i <= 1000; i++) {       C[i][0] = C[i][i] = 1;       for (int j = 1; j < i; j++)         C[i][j] = (C[i - 1][j - 1] + C[i - 1][j]) % 1000000007;     }     scanf( %d%d%d , &n, &m, &s);     printf( %d n , int(C[n - 1][2 * s] * 1ll * C[m - 1][2 * s] % 1000000007));   }   