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)

//by shubham_bitsg

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
//using namespace __gnu_pbds;
 
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef pair<int,int> pi;
typedef vector <string> vs;

//#define oset tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define forl(i,a,b) for (int i = a; i < b; i++)
#define rfor(i,b,a) for (int i = b; i >= a; i--)
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define srt(x) sort(x.begin(), x.end())
#define sumup(x) accumulate(x.begin(), x.end(), 0)
#define PI 3.141592653589793238

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    char c;
    cin>>c;
    if(isupper(c)) cout<<"A\n";
    else cout<<"a\n";
}