lol

#include<bits/stdc++.h>

using namespace std;
int main()
{

    cout << fixed << setprecision(2);
   double h, x, v;
   cin >> h >> x >> v;
   double v1 = (2 * 9.8 * h);
   v1 = sqrt(v1);
   double t1 = (v1 / 9.8 );

   //cout << t1 << endl;

   double t2 = x/v;
  // cout << t2 << endl;

   if(t1 < t2) {
        cout << "NO " ;
        double c = x/t1;
        cout  << c-v << " m/s" << endl;
   }
   else cout << "YES" << endl;


}