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 prob1
    implicit none
    character(len=3)::S,T
    integer::l
    read(*,*) S
    l = len_trim(S)
    if(l == 2) then
        write(*,'(a)') trim(S)
    else
        T(1:1) = S(3:3)
        T(2:2) = S(2:2)
        T(3:3) = S(1:1)
        write(*,'(a)') trim(T)
    end if
    stop
end program