#include <bits/stdc++.h>
int main() {
  long long int a, b, c;
  scanf("%lld %lld %lld", &a, &b, &c);
  int f = a * a + b * b + c * c;
  int g = (a * b + a * c + b * c) * 2;
  int h = c;
  int i = a + b;
  if (f > g && h > i) {
    printf("Yes");
  } else {
    printf("No");
  }
  return 0;
}
