func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long mod = 1e9 + 7;   long long dp[1005][2005];   int main() {     int n, m, k;     cin >> n >> m >> k;     for (int i = 1; i <= max(m, n); i++) {       for (int j = 0; j <= i; j++) {         if (j == 1) {           dp[i][j] = i;           continue;         }         dp[i][j] = dp[i - 1][j - 1] + dp[i - 1][j];         dp[i][j] %= mod;       }     }     cout << 1LL * dp[n - 1][2 * k] * dp[m - 1][2 * k] % mod;   }   