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 PyPy3 (7.3.0) (judge verdict: Wrong Answer)

from sys import stdin, stdout, setrecursionlimit
from collections import deque, defaultdict, Counter
import math

rl = lambda: stdin.readline()
rll = lambda: stdin.readline().split()
rli = lambda: map(int, stdin.readline().split())
rlf = lambda: map(float, stdin.readline().split())

INF, NINF = float('inf'), float('-inf')

def main():
	c = rll()[0]
	if ord("a") - ord(c) == 0:
		print("a")
	else:
		print("A")
	stdout.close()

if __name__ == "__main__":
	main()