Practical Task

using System;

namespace Telerik2
{
    class Program
    {
        static void Main(string[] args)
        {
            double inputNum = double.Parse(Console.ReadLine());
            string stringNum = inputNum.ToString();
            char[] arrNum = stringNum.ToCharArray();
            for (int i = 0; i < arrNum.Length / 2; i++)
            {
                char tmp = arrNum[i];
                arrNum[i] = arrNum[arrNum.Length - i - 1];
                arrNum[arrNum.Length - i - 1] = tmp;
            }
            for (int i = 0; i < arrNum.Length; i++)
            {
                Console.Write(arrNum[i]);
            }

        }
    }
}