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.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String str = scan.nextLine();
		scan.close();
		
		String out = null;
		if (str.length() == 2) {
			out = str;
		} else if(str.length() == 3) {
			out = String.valueOf(str.charAt(2))
					+ String.valueOf(str.charAt(1))
					+ String.valueOf(str.charAt(0));
		} else {
			out = "文字列は2文字または3文字で入力してください";
		}
		
		System.out.println(out);
	}

}
