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: Runtime Error)

using System;

class Program
{
    static void Main(string[] args)
    {

        string str = Console.ReadLine();

        string[] strer = new string[3];

        strer = str.Split(' ');

        long a = long.Parse(strer[0]);
        long b = long.Parse(strer[1]);
        long k = long.Parse(strer[2]);
        long count = 0;

        while (true)
        {
            if (a % 2 != 0)
            {
                a -= 1;
            }
            b = b + a / 2;
            a = a / 2;
            count++;
            if (count == k)
            {
                break;
            }

            if (b % 2 != 0)
            {
                b -= 1;
            }
            a = a + b / 2;
            b = b / 2;
            count++;
            if (count == k)
            {
                break;
            }
        }
           
        Console.WriteLine($"{a} {b}");


    }
}