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(){
	char a[3];
	int i=0;
	while(cin>>a[i]){i++;}
	if(i==2){cout<<a[0]<<a[1]<<endl;}
	else{cout<<a[2]<<a[1]<<a[0]<<endl;}
	
	return 0;
}