# ZeroJudge - a541: 字典
### 題目連結：https://zerojudge.tw/ShowProblem?problemid=a541
###### tags: `ZeroJudge` `字串`

#include <iostream>
#include <string>
#include <unordered_set>
using namespace std;

int main() {
	cin.sync_with_stdio(false); cin.tie(nullptr);
	unordered_set <string> remember;
	int knows, queries;
	string word;
	cin >> knows >> ws;
	while (knows--) {
		getline(cin, word);
		remember.insert(word);
	}
	cin >> queries >> ws;
	while (queries--) {
		getline(cin, word);
		if (remember.find(word) != remember.end())
			cout << "yes\n";
		else {
			cout << "no\n";
			remember.insert(word);
		}
	}
}