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 <stdio.h>

int main(){
  char a[3];
  scanf("%s",a);
 
  if(a[2]=='\0'){
    printf("%s",a);
  }else{
    char u = a[0];
    a[0] = a[2];
    a[2] = u;
    printf("%s",a);
  }  
}