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 11.0.6) (judge verdict: Wrong Answer)

public class Main{

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		char alfabetU = 'B';
		char alfabetL = 'a';
		
		discernAlphabetic(alfabetU);
		discernAlphabetic(alfabetL);

		
	}
	
	private static void discernAlphabetic (char alfabet) {
		if (Character.isUpperCase(alfabet)) {
			System.out.println("A");	// 大文字
		}
		else {
			System.out.println("a");	// 小文字
		}
	}
}