using System;

public class Program

{

    public static void Main()

    {

        int num1;

        Console.WriteLine("Enter number");

        num1=int.Parse(Console.ReadLine());

        if(num1/100==0||num1/10==0||num1%10==0)

        {

            Console.WriteLine("yes");

        }

        else

        {

            Console.WriteLine("try again");

        }

    }

}