func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     double d, h, v, e;     cin >> d >> h >> v >> e;     double pi = 2 * acos(0.0);     double he = (4 * v) / (pi * d * d);     if (he > e) {       cout <<  YES n ;       cout << setprecision(12) << (h) / (he - e);     } else       cout <<  NO ;     return 0;   }   