using System;

public class Program

{

    public static void Main()

    {

    }

    public static int Enumeration()

    {

        bool isEndInput = false;

        while(isEndInput = false)

        {

            string tetant = Console.ReadLine();

            if (tetant == "")

            {

                isEndInput = true;

            }

            else

            {

            }

        }

        return 0;

    }

}