using System;

public class Program

{

    public static void Main()

    {

        int rev=0,r;

        Console.WriteLine("enter th no");

        int n=int.Parse(Console.ReadLine());

        while(n!=0)

        {

            r=n%10;

            rev=rev*10+r;

            n=n/10;

        }

        Console.WriteLine(rev);

    }

}