using System;


namespace _04.Numbers_in_Reversed_Order
{
    class Program
    {
        static void Main()
        {
            double Number = Math.Abs(double.Parse(Console.ReadLine()));
            var newnumber = reverseNumber(Number);
            Console.WriteLine(newnumber);
        }

         static object reverseNumber(double Number)
        {

            double ReverseNumber = 0;
            while (Number > 0)
            {
                ReverseNumber = (ReverseNumber * 10) + (Number % 10);
                Number = Number / 10;
            }
            return ReverseNumber;
        }
    }
}