func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long N = 2e3 + 5;   const long long MOD = 1e9 + 7;   long long nCr[N][N];   void precompute() {     nCr[0][0] = 1;     for (long long i = 1; i < N; i++) {       nCr[i][0] = 1;       for (long long j = 1; j <= i; j++) {         nCr[i][j] = nCr[i - 1][j - 1] + nCr[i - 1][j];         nCr[i][j] %= MOD;       }     }   }   int32_t main() {     ios::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     ;     precompute();     long long n, m, k;     cin >> n >> m >> k;     long long ans = nCr[n - 1][2 * k] * nCr[m - 1][2 * k];     ans %= MOD;     cout << ans;     return 0;   }   