func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     double d, h, v, e;     cin >> d >> h >> v >> e;     d /= 2;     double vol = d * d * acos(-1) * h;     double incre = e * d * d * acos(-1);     if (incre >= v) {       cout <<  NO ;       return 0;     }     double ans = vol / (v - incre);     if (ans > 1e4) {       cout <<  NO ;       return 0;     }     cout <<  YES n ;     cout << setprecision(15) << ans;   }   