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;

string s;

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