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 C (Clang 10.0.0) (judge verdict: Accepted)

#include <stdio.h>

int main(void) {
  char c;
  scanf("%c", &c);
  if('A' <= c && c <= 'Z') {
    puts("A");
  } else if('a' <= c && c <= 'z') {
    puts("a");
  }
  return 0;
}