#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a, b, c;
  cin >> a >> b >> c;
  double d = sqrt(a);
  double e = sqrt(b);
  double f = sqrt(c);
  if (d + e < f + 5e-13) {
    cout << "Yes";
  } else {
    cout << "No";
  }
  return 0;
}
