import std.stdio, std.conv, std.string, std.algorithm, std.math, std.array, std.container;

bool solve() {
  long a, b, c;
  readf("%d %d %d\n", &a, &b, &c);
  return a*a+b*b+c*c-2*a*b-2*a*c-2*b*c > 0;
}

void main() {
  if(solve) writeln("Yes");
  else writeln("No");
}

