using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        List<int> digits = new List<int> {2,2,7};

        foreach(int digit in digits)

            Console.Write(digit);

        Console.WriteLine();

        digits.Reverse();

        foreach(int digit in digits)

            Console.Write(digit);

        Console.WriteLine();

    }

}