#include <bits/stdc++.h>
using namespace std;
long long fix(long long cur, long long m) { return ((cur % m) + m) % m; }
long long fast_power(long long x, long long y, long long m) {
  if (y == 0) return 1;
  long long temp = fast_power(x, y / 2, m);
  temp = (temp * temp) % m;
  if (y % 2 != 0) temp = (temp * x) % m;
  return temp;
}
long double root(long double x) {
  long double s = 0, e = 1e9;
  while (e - s > 1E-16) {
    long double mid = s + (e - s) / 2.0;
    if (mid * mid > x)
      e = mid;
    else
      s = mid;
  }
  return s;
}
int32_t main() {
  cin.tie(0);
  std::ios::sync_with_stdio(false);
  cout.tie(0);
  long long t = 1;
  while (t--) {
    long double a, b, c;
    cin >> a >> b >> c;
    long double aa = root(a);
    long double bb = root(b);
    long double cc = root(c);
    if (aa + bb < cc)
      cout << "Yes"
           << "\n";
    else
      cout << "No"
           << "\n";
  }
  return 0;
}
