#include <bits/stdc++.h>
using namespace std;
const long double epf = 1e-12;
int main() {
  long double a, b, c;
  cin >> a >> b >> c;
  long double d = sqrt(a) + sqrt(b) - sqrt(c);
  if (d < epf)
    cout << "Yes\n";
  else
    cout << "No\n";
  return 0;
}
