func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int ans[] = {0, 1,         0, 18,        0, 1800,                  0, 670320,    0, 734832000, 0, 890786230,                  0, 695720788, 0, 150347555, 0};     int n;     cin >> n;     cout << ans[n] <<   n ;     return 0;   }   