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;
	cin>>s;
	int len=s.length();
	if(len==2){
		cout<<s;
	}
	else{
		for(int i=len-1;i>=0;i--){
			cout<<s[i]; 
		}
	}
} 