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 (GCC 9.2.1) (judge verdict: Accepted)

#include    <stdio.h>

int main(void)
{
    char a;
    if (fscanf(stdin, "%c", &a) == EOF) {
	return 1;
    }

    if (a >= 'A' && a <= 'Z') {
	printf("A\n");
    } else if (a >= 'a' && a <= 'z') {
	printf("a\n");
    }

    return 0;
}