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: Accepted)

import java.util.Scanner;

/**
 * コンソールテスト用Main クラス
 *
 */
public class Main {

	/* コンストラクタ */
	Main() {
	//何もしない
	}

	/**
	 * 提出
	 *
	 */

	public static void main(String args[]) {
		Scanner scanner= new Scanner(System.in);
		String a = " ";
		boolean hanntei = false;


		a = scanner.next();
		hanntei = a.matches("[a-z]");


		/* hanntei の値がtrueの場合、小文字 */
		if (hanntei == true) {
			System.out.println("a") ;
		/* それ以外(hanntei の値がfalseの場合、大文字)*/
		} else {
			System.out.println("A") ;
		}
	}
}