func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, p;   long long fac[250005], ans;   int main() {     scanf( %d%d , &n, &p);     fac[0] = 1;     for (int i = 1; i <= n; i++) fac[i] = fac[i - 1] * i % p;     for (int i = 1; i <= n; i++)       ans = (ans + fac[n - i + 1] * (n - i + 1) % p * fac[i] % p) % p;     printf( %lld , ans);     return 0;   }   