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 S = sc.nextLine();
		String answer;
		switch(S.length()){
			case 2:
			answer = S;
			break;
			case 3:
			StringBuffer sb = new StringBuffer(S);
			answer = sb.reverse().toString();
			break;
			default:
			answer = "";
		}
		System.out.println(answer);
		System.out.flush();
		return;
	}
}
