불량 사용자 C++

https://programmers.co.kr/learn/courses/30/lessons/64064

코딩테스트 연습 - 불량 사용자

#include <string>
#include <vector>
#include <iostream>
#include <algorithm>

using namespace std;
vector<vector<int>> tmp;
int answer = 0;
vector<vector<int>> num;

void FindAnswer(int index, vector<int> v) {
	if (index == num.size()) {
		sort(v.begin(), v.end());
		if (find(tmp.begin(), tmp.end(), v) == tmp.end()) {
			tmp.push_back(v);
		}
		return;
	}
	for (int i = 0; i<num[index].size(); i++) {
		if (find(v.begin(), v.end(), num[index][i]) == v.end()) {
			v.push_back(num[index][i]);
			FindAnswer(index + 1, v);
			v.pop_back();
		}
		else {
			continue;
		}
	}
}

int solution(vector<string> user_id, vector<string> banned_id) {
	num.resize(banned_id.size());

	for (int i = 0; i<user_id.size(); i++) {
		for (int j = 0; j<banned_id.size(); j++) {
			int index = 0;
			if (user_id[i].size() != banned_id[j].size())
				continue;
			while (index < user_id[i].size() && (user_id[i][index] == banned_id[j][index] || banned_id[j][index] == '*')) {
				index++;
			}
			if (index == banned_id[j].size()) {
				num[j].push_back(i);
			}
		}
	}
	vector<int> v;
	FindAnswer(0, v);
	answer = tmp.size();
	return answer;
}