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: Runtime Error)

package kenshu;

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);

	//コンソールに入力した値を取得
	String a = sc.next();
	//コンソールに出力
	//System.out.print(a);


	if(a.matches("[A-Z]+")) {
		System.out.println("A");
	}else {
		System.out.println("a");
	}

//	sc.close();
	}
}