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 {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		String S1 = sc.next();
		
		int s1Len = S1.length();
		
		if(s1Len == 2){
			System.out.println(S1);
		}else{
			
			String a = S1.substring(0,1);
			String b = S1.substring(1,2);
			String c = S1.substring(2,3);
			
			S1 = c + b + a;//ひどい有様
			
			System.out.println(S1);
		}
	}
}
