using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication6

{

    class Program

    {

        static void Main(string[] args)

        {

            string k = "";

            k = Console.ReadLine();

            for (int i = k.Length - 1; i >= 0; i--)

                Console.Write(k[i]);

            Console.ReadLine();

        }

    }

}