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 <bits/stdc++.h>

using namespace std;

typedef long long ll; 
typedef long double ld;

int main() {
	
	// make input and output more efficient
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	// freopen("input.txt", "r", stdin);
	// freopen("output.txt", "w", stdout);
	
	
	// to read whole line
	//string s;
	//getline(cin, s);
	
	char a;
	
	cin >> a;
	
	if(a<='z' && a>='a')
		cout << "a\n";
	else 
		cout << "A\n";
	
	return 0;
}