Problem:
Score : 100 points

Problem Statement

An uppercase or lowercase English letter \alpha will be given as input.
If \alpha is uppercase, print A; if it is lowercase, print a.

Constraints

\alpha is an uppercase (A - Z) or lowercase (a - z) English letter.

Input

Input is given from Standard Input in the following format:

α

Output

If \alpha is uppercase, print A; if it is lowercase, print a.

Sample Input 1

B

Sample Output 1

A

B is uppercase, so we should print A.

Sample Input 2

a

Sample Output 2

a

a is lowercase, so we should print a.

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

program abc171
    use,intrinsic :: iso_fortran_env
    implicit none
    character(1):: r

    read*, r
    if (ichar(r) < ichar('a')) then
        print'(a)', 'A'
        
    else
        print'(a)', 'a'
    end if
end program abc171