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 Java (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;
import java.util.Arrays;
import java.util.List;


public class Main {
     public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char a = sc.next().charAt(0);
        sc.close();
        char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray();
        if(Arrays.asList(alphabet).contains(a)){
            System.out.println("a");
        }else{
            System.out.println("A");
        }
    }
}