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 java_KSP20200626;

	
	public class Main {
	
		public static void main(String[] args) {
			String string = "";
			
			if(Character.isUpperCase(string.charAt(0))) {
				System.out.print(string.toUpperCase());
			}
			if(Character.isUpperCase(string.charAt(0))) {
				System.out.print(string.toLowerCase());
			}
			
		}
	
	}