func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 1e10;   const double pi = 3.14159265359;   const long long mod = 1743;   const long long MAXN = 2 * 1e5 + 6;   const long long MAXM = 2 * 1e5 + 6;   const long long zero = 0;   double v1, v2, e1, e2, h, d, r, area;   int main() {     ios::sync_with_stdio(false);     cin >> d >> h >> v1 >> e1;     r = d * 0.5;     area = r * r * pi;     v2 = area * e1;     cout.precision(10);     if (v2 >= v1)       cout <<  NO ;     else       cout <<  YES  << endl << (area * h) / (v1 - v2);     return 0;   }   