#include <bits/stdc++.h>
using namespace std;
int main() {
  long double a, b, c;
  cin >> a >> b >> c;
  long double da = sqrtl(a);
  long double db = sqrtl(b);
  long double dc = sqrtl(c);
  dc -= da;
  dc -= db;
  if (dc > 1.0e-15) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
  return 0;
}
