#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {

	int a,b,c;
	string ans;
	cin >> a >> b >> c;
	if(a * a + b * b < c * c)
	ans = "Yes";
    else
      ans = "No";
	
	cout << ans << endl;
}
#include<bits/stdc++.h>
using namespace std;

int main(){
	long long int a,b,c;
	cin>>a>>b>>c;
	if((a*a + b*b)<(c*c)){
		cout<<"Yes\n";
	}else
	cout<<"No\n";
}
 