reverse string

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

namespace advanced
{
    class Program
    {
        static void Main(string[] args)
        {
            /*string[] input = Console.ReadLine().Split().ToArray();

            Stack<string> words = new Stack<string>(input);

            Console.WriteLine(string.Join(" ", words));*/

            string input = Console.ReadLine();

            Stack<char> words = new Stack<char>(input);

            Console.WriteLine(string.Join("", words));
        }
    }
}