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: Wrong Answer)

#include <iostream>

using namespace std;


int main(){
	int n;
	int q,b,c;
	long long ans = 0;
	long long num[100010];

	cin >> n;
	for(int i = 1; i <= n; i++){
		long long a;
		cin >> a;
		ans += a;
		num[a]++;
	}	

	cin >> q;
	for(int i = 0; i < q; i++){
		cin >> b >> c;
		ans += (c - b) * num[b];
		num[c] += num[b];
		num[b] = 0;
		cout << ans << endl;	
	}

	return 0;
}