func_code_string: #include <bits/stdc++.h>   const int MOD = 1000000007;   int64_t dp[2001][2001];   int main() {     int n, m, k;     std::cin >> n >> m >> k;     dp[0][0] = 1;     for (int i = 1; i <= 2000; ++i) {       dp[i][0] = 1;       for (int j = 1; j < i; ++j) {         dp[i][j] = (dp[i - 1][j - 1] + dp[i - 1][j]) % MOD;       }       dp[i][i] = 1;     }     std::cout << (dp[n - 1][2 * k] * dp[m - 1][2 * k]) % MOD <<   n ;     return 0;   }   