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.*;
public class Main {
	private static Scanner sc;

	public static void main(String[] args){
		sc = new Scanner(System.in);
		// get a integer
		String a = sc.next();
		
		StringBuilder b = new StringBuilder();
		b.append(a);
		b = b.reverse();
		
		if(a.length() == 2) {
			System.out.println(a);
		} else if (b.length() == 3){
			System.out.println(b);
		}
	}
}