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<cstdio>
#include<cstring>
char a[5];
int len;
int main(){
	scanf("%s",a+1);
	len=strlen(a+1);
	if (len==2) puts(a+1);else{
		for (int i=3;i>=1;i--) putchar(a[i]);
	}
}