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.

Examples

Input

abc


Output

cba


Input

ac


Output

ac

import java.util.Scanner;

public class Main
{
	
	public static void main(String[] args) {
		Scanner input=new Scanner(System.in);

		String word=input.nextLine();
		
		StringBuilder sb=new StringBuilder(word);
		if(word.length()==2)
			System.out.println(word);
		else
			System.out.println(sb.reverse());
	
	}
	


}

