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
#include <iostream>
#include <string>
using namespace std;
int main() {
	string a;
	cin >> a;
	if (a.size() == 3)
		for (int i = 2; i >= 0; i--)
			cout << a[i];
	else {
		cout << a;
	}
}