using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter your exception number");

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

        String i=j.ToString();

        if(i[0]!=2||i.Length==5)

        {Console.WriteLine("No  no No");}

        else

        {Console.WriteLine("yes yes yes");

​

        }

    }

}