using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("guess a number between 1 and 10:");

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

        while(guess != 0 && guess != 3) {

            Console.WriteLine("Guess Again!");

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

        }

        if(guess == 0)

            Console.WriteLine("Goodbye");

        if(guess == 3)

            Console.WriteLine("Congratulations");

    }

}