#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a, b, c;
  cin >> a >> b >> c;
  long long A = a * a, B = b * b, C = c * c;
  if (0 < A + B + C - 2 * a * c - 2 * a * b - 2 * b * c)
    cout << "Yes" << endl;
  else
    cout << "No" << endl;
  return 0;
}
