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: Runtime Error)

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int[] nk = new int[2];
    for (int i = 0; i < nk.length; i++){
      nk[i] = sc.nextInt();
    }
    sc.nextLine();
    int[] pn = new int[nk[0]];
	for (int i = 0; i < nk[0]; i++){
      pn[i] = sc.nextInt();
    }
    Arrays.sort(pn);
    int answer = 0;
    for (int i = 0; i < nk[1]; i++){
      answer += pn[i];
    }
    System.out.println(answer);
  }
}