using System;

public class Program

{

    public static void Main()

    {

        string input = Console.ReadLine();

        switch (input){

            case "exit":

                Console.WriteLine("Goodbye");

                break;

            default:

                for (int i = 0 ; i < input.Length ; i++ ){

                Console.WriteLine(input[i]);

                }

                break;

        }

    }

}