func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 2100;   int n, al;   double P;   int main() {     ios_base::sync_with_stdio(false);     cin >> n >> P;     al = n * (n - 1) * (n - 2) / 6;     int ans = n;     for (int i = 0; i <= n; i++) {       double temp = 0;       if (i >= 1 && n - i - 1 >= 0)         temp += (double)(i * (n - i) * (n - i - 1) / 2) / al / 2;       if (i >= 2) temp += (double)(i * (i - 1) * (n - i) / 2) / al;       if (i >= 3) temp += (double)(i * (i - 1) * (i - 2) / 6) / al;       if (temp >= P) {         ans = i;         break;       }     }     cout << ans << endl;     return 0;   }   