using System;

namespace YukiCoderNo9006
{
    class Program
    {
        static void Main()
        {
            string input = Console.ReadLine();
            char[] buffer = input.ToCharArray();
            for (int i = buffer.Length - 1; i >= 0; i--){
                Console.Write(buffer[i]);
            }
            Console.WriteLine();
        }
    }
}