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<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>  
#include <functional>
#define ll long long int
#define ld long double
#define pb push_back
#define pll pair<ll,ll>
#define pint pair<int,int>
#define forn(i, n) for (int i = 0; i < int(n); i++)
#define mod 1000000007
#define MAX 1000010
#define endl '\n'
#define mp make_pair
#define INF INT_MAX
#define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL);
#define ff first
#define ss second
#define ps(x,y) fixed<<setprecision(y)<<x
#define setbits(x) __builtin_popcountll(x)			//counts no of ones in binary representation
#define w(t) 	int t; cin>>t; while(t--)
#define pi 3.141592653589793238
#define sortt(v)  sort(v.begin(),v.end())
#define lb(v,x) std::lower_bound(v.begin(),v.end(),x)
#define ub(v,x) std::upper_bound(v.begin(),v.end(),x)

using namespace std;

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