#include <bits/stdc++.h>
using namespace std;
	#include <math.h>
int main() {
double a,b,c;
  cin >> a >> b >> c ;
  long long double A, B, C;
  A=sqrt(a);
  B=sqrt(b);
  C=sqrt(c);
  if(A+B < C){
  cout << "Yes";
  }else{
    cout << "No";
  }
}

