#include <bits/stdc++.h>
int main() {
  float a, b, c;
  float A, B, C;
  scanf("%f %f %f", &a, &b, &c);
  A = sqrtl(a);
  B = sqrtl(b);
  C = sqrtl(c);
  if (A + B < C) {
    printf("Yes");
  } else {
    printf("No");
  }
  return 0;
}
