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>
using namespace std;
int main(){
	string s;
	int i,n;
	cin>>s;
	n=s.size();
	if(n%2)
		for(i=n-1;i>=0;i--)cout<<s[i];
	else cout<<s;
	return 0;
}