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 <bits/stdc++.h>
using namespace std;

int main() {
	string S;cin>>S;
	if(S.size()==3){
		char a,b;
		a=S[0];
		b=S[2];
		S[2]=a;
		S[0]=b;
	}
	cout<<S<<endl;
}