using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

public class Class1 {
    static void Main(string[] args) {
        Console.InputEncoding = System.Text.Encoding.UTF8;
        Console.OutputEncoding = System.Text.Encoding.UTF8;
        var s = Console.ReadLine();
        Console.WriteLine(new string(s.Reverse().ToArray()));
    }
}