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 <iostream>
#include <iomanip>
#include <vector>
#include <map>
#include <string>
#include <math.h>
#include <algorithm>
#include <numeric>
#include <queue>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)

int main() {
    char s;
    cin >> s;
    if (s >= 'a' && s <= 'z') cout << "a" << endl;
    else cout << "A" << endl;
}