#include <bits/stdc++.h>
using namespace std;
unsigned long long a, b, c;
int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(NULL);
  cin >> a >> b >> c;
  if (c * c + b * b + a * a > 2 * (b * c + a * b + a * c))
    cout << "Yes";
  else
    cout << "No";
  return 0;
}
