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 <iostream>
#include <algorithm>
using namespace std;

int main() {
    int N;
    int K;
    int p[1100];  
    cin >> N;
    cin >> K;
    for (int i = 0; i < N; ++i) cin >> p[i];

//    sort(a, a + N, greater<int>());  // a[0:N] を大きい順にソート
    sort(p, p + N);
    int res = 0;
    for (int i = 0; i < K; ++i) {
        res += p[i];
    }
    cout << res << endl;
}