using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        bool b=false;

        int n,i;

        int[] tab = new int[] {12,15,13,10,8,9,13,14};

        string saisie= Console.ReadLine();

        n = int.Parse(saisie);

        i=0;

        do{

            if (tab[i]==n) {

                b=true; 

            }

            i++;

        }

        while (b==false && i<8);

        if (b==false) {

            Console.WriteLine("non");

        }

        else{

            Console.WriteLine("oui");

        }

    }

}