        #include<bits/stdc++.h>
            using namespace std;
            int main()
            { int a,b,c,d; cin>>a>>b>>c>>d;

             cout<<max(a,b)-min(c,d);

             return 0;
            }
#include <bits/stdc++.h>
using namespace std;
int main()
{

   int A,B,C,d;
   cin>>A>>B>>C;
   d=A*A+B*B;
   if (d<C*C)
   	cout<<"Yes";
   else 
   	cout<<"No";

}