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 Pascal (FPC 3.0.4) (judge verdict: Accepted)

program main;
var
    c : char;
begin
    readln(c);
    if (c >= 'a') and (c <= 'z')
        then writeln('a');
    if (c >= 'A') and (c <= 'Z')
        then writeln('A');
end.