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.*;
import java.io.*;

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

	//入力文字列
	String s;
	s = scan.next();

	StringBuffer sb = new StringBuffer(s);

	if(s.length() == 2){
	    System.out.println(s);
	}else{
	    //反転用文字列
	    String dst = sb.reverse().toString();
	    System.out.println(dst);
	}
    }
}
	
