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>
using namespace std;
#define ll long long
#define ub upper_bound
#define int long long
#define vbe(sdk) sdk.begin(), sdk.end()
#define pb push_back
#define loop(i, a, b) for (int i = a; i < b; ++i)
#define rloop(i, a, b) for (int i = a; i >= b; --i)
#define mp make_pair
#define mod 1000000007
#define endl '\n'
#define vvll vector<vector<int>>
#define vll vector<int>
#define mint map<int, int>
#define arry(x) (int)x.size()
#define sll set<int>
#define pll pair<int, int>
#define F first
#define S second
#define pi 3.14159265358979323846
using namespace std;
const int MAX = 100001;


void solve()
{
    char c;
    cin>>c;
    if(c >= 'A' && c<='Z')
    {
        cout<<"A\n";
    }
    else
    {
        cout<<"a\n";
    }
    
}
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    // #ifndef ONLINE_JUDGE
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    // #else
    // // online submission
    // #endif


    int t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }
    return 0;
}