Problem:
Score : 100 points

Problem Statement

You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.

Constraints

The length of S is 2 or 3.

S consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If the length of S is 2, print S as is; if the length is 3, print S after reversing it.

Sample Input 1

abc

Sample Output 1

cba

As the length of S is 3, we print it after reversing it.

Sample Input 2

ac

Sample Output 2

ac

As the length of S is 2, we print it as is.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

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

namespace atc
{
    class Program
    {
        static void Main(string[] args)
        {
            var S = Console.ReadLine();

            if (S.Length == 2)
            {
                Console.WriteLine(S);
            }
            else if (S.Length == 3)
            {
                for (int i = 0; i < S.Length; i++)
                {
                    int reverse = S.Length - i - 1;
                    Console.Write(S[reverse]);
                }
                Console.WriteLine("");
            }

        }

    }
}