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)

/*
	Author: Dinesh Verra
	College: ABV-IIITM
	Date: 20/06/2020
*/
#include <bits/stdc++.h>
// #include <boost/multiprecision/cpp_int.hpp> 
// using namespace boost::multiprecision; 
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define cu continue
#define br break
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mod 1000000007
#define inf 1000000000
#define pll pair <ll,ll>
#define min_pq priority_queue <pll> ,vector <pll>, greater <pll> > > 
#define F first
#define S second
#define vll vector <ll>
#define vpll vector <pll>
#define dbg(n) cout<<#n<<' '<<n<<endl;
#define all(v) v.begin(),v.end()
#define nl cout<<'\n'

template <typename A1>
void prn(A1&& arg)
{
	cout<<arg<<'\n';
}
template <typename A1, typename... A>
void prn(A1&& arg, A&&... args)
{
	cout<<arg<<' ';
	prn(args...);
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);


	char c;
	cin>>c;
	if((c-'a')>=0 && (c-'a')<26)
		prn('a');
	else
		prn('A');
}