【題目敘述】https://atcoder.jp/contests/panasonic2020/tasks/panasonic2020_c
#include <bits/stdc++.h>
using namespace std;
const long double eps = 1e-14;
long double a, b, c;
int main(){
cin >> a >> b >> c;
if (sqrt(a)+sqrt(b)+eps < sqrt(c)) cout << "Yes\n";
else cout << "No\n";
}