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: Runtime Error)

program main;
var
    n, k, sum, mini, i, j, temp : integer;
    a : array[1..1000] of integer;

begin
    readln(n, k);

    for i := 1 to n do 
        read(a[i]);

    sum := 0;
    for i := 1 to k do begin
        mini := i;
        for j := i + 1 to n do 
            if (a[mini] > a[j]) then
                mini := j;
        
        sum := sum + a[mini];
        temp := a[mini];
        a[mini] := a[i];
        a[i] := temp;
    end;
    

    writeln(sum);
end.