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 Rust (1.42.0) (judge verdict: Runtime Error)

use proconio::input;

fn main() {
    input! {
        n: usize,
        k: usize,
        mut p: [i32; n]
    }

    solve(k, &mut p);
}

fn solve(k: usize, p: &mut [i32]) {
    p.sort();

    let s = p.iter().take(k).sum::<i32>();
    println!("{}", s);
}