#include <bits/stdc++.h>
using namespace std;
void io() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
}
template <typename K>
unordered_set<K> hashset() {
  unordered_set<K> s;
  s.max_load_factor(0.25);
  s.reserve(512);
  return s;
}
template <typename K, typename V>
unordered_map<K, V> hashmap() {
  unordered_map<K, V> m;
  m.max_load_factor(0.25);
  m.reserve(512);
  return m;
}
const long long inf = 10000000000000ll;
int ceil_div(int x, int y) { return 1 + ((x - 1) / y); }
int main() {
  io();
  long long a, b, c;
  cin >> a >> b >> c;
  if (c - a - b < 0) {
    if (2 * a * b > a * a + b * b + c * c - 2 * a * c - 2 * b * c) {
      cout << "Yes" << endl;
    } else {
      cout << "No" << endl;
    }
  } else {
    if (2 * a * b < a * a + b * b + c * c - 2 * a * c - 2 * b * c) {
      cout << "Yes" << endl;
    } else {
      cout << "No" << endl;
    }
  }
}
