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.io.FileNotFoundException;
import java.io.FileReader;
import java.util.Scanner;

public class Main {

  public static void main(String[] args) throws FileNotFoundException {

    //Scanner cin = new Scanner(new FileReader("input.txt"));
   Scanner cin = new Scanner(System.in);
    String in = cin.next();

    if (in.length()==2) {
      System.out.println(in);
    }

    else if (in.length()==3) {
      String res = new StringBuilder(in).reverse().toString();
      System.out.println(res);
    }

  }

}