10816번: 숫자 카드 2 [C++]

문제

 

 

풀이

#include <iostream>
#include <unordered_map>

using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);

	int n, num;
	unordered_map<int, int> m;

	cin >> n;

	for (int i = 0; i < n; i++) {
		cin >> num;

		m[num]++;
	}

	cin >> n;

	for (int i = 0; i < n; i++) {
		cin >> num;

		cout << m[num] << " ";
	}

	return 0;
}