#include <iostream>
using namespace std;

int main() {
  int a, b, c;
  cin >> a >> b >> c;
  bool condition = (a < b + c && b < a + c && c < a + b); 
  cout	<< (char)(condition * 'Y' + !condition * 'N')
		<< (char)(condition * 'E' + !condition * 'O')
		<< (char)(condition * 'S' + !condition * ' ');
  return 0;
}