백준 17219 비밀번호 찾기

백준 17219

#include <bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
using namespace std;
int n, m;
int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n >> m;

	unordered_map<string, string> um;
	while (n--) {
		string s1, s2;
		cin >> s1 >> s2;

		um[s1] = s2;

	}

	while (m--) {
		string s;
		cin >> s;

		cout << um[s] << '\n';
	}
}