Problem:
Score : 100 points

Problem Statement

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.

Sample Input 1

abc

Sample Output 1

cba

As the length of S is 3, we print it after reversing it.

Sample Input 2

ac

Sample Output 2

ac

As the length of S is 2, we print it as is.

Solution in Fortran (GNU Fortran 9.2.1) (judge verdict: Accepted)

program main
	implicit none
    character(3)::s
    read(*,*)s
    if(len_trim(s)==2)then
    	write(*,*)s
    else
    	write(*,*)s(3:3)//s(2:2)//s(1:1)
    end if
    stop
end program main