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.*;

class Main
{
    public static void main(String[] args)
    {
	    // Scanner in = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		// Scanner in = new Scanner(Syste8
    	Scanner in = new Scanner(System.in);
    	Main s = new Main();
    	s.qa(in.nextLine());
	}

	void qa(String str)
	{
		String rev = new StringBuilder(str).reverse().toString();
		if(str.length() == 2) System.out.println(str);
		else System.out.println(rev);
	}
}