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 <cstdio>
#include <cstring>
#include <vector>
#include <algorithm>
#include <string>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip> 
#include <bits/stdc++.h>
using namespace std;
double pi=3.14159265358979323846264338;
const int MOD=1000000007;

int main() {
	char a;
	cin>>a;
	if(a>'Z'){cout<<"a"<<endl;}
	else cout<<"A"<<endl;
	
	
	return 0;
}