func_code_string: #include <bits/stdc++.h>   using namespace std;   const double pi = 3.1415926535897;   int main() {     double d, h, v, e;     cin >> d >> h >> v >> e;     double s = (-1 * h) / (e - ((4 * v) / (pi * d * d)));     if (s >= 0)       cout <<  YES  << endl << s;     else       cout <<  NO ;   }   