using System;

​

namespace Test

{

    class Program

    {

        public static string ReverseString(string s)

        {

            char[] arr = s.ToCharArray(); 

            Array.Reverse(arr); 

            return new string(arr); 

        }

        public static void Main()

        {

            string s;

            s=Console.ReadLine();

            string res = ReverseString(s);

            Console.WriteLine(res);

        }

    }

}