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: Wrong Answer)

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<math.h>

#define MODULE 
#define RAND(min,max) (rand()%(max-min+1)+min)
#define LOGI(log) printf("\n%d\n",log);
#define LOGS(log) printf("\n%s\n",log);
#define DEBUG() {printf("\nDEBUG %d\n",num_debug);num_debug++;}
char num_debug = 0;
int main(void) {
	srand((unsigned)time(NULL));

	char c;
	scanf("%c", &c);

	if ('A' < c&&c<'a')
		printf("A");
	else
		printf("a");

	LOGI('A')//65
	//LOGI('a')//97
	return 0;
}