#include <iostream>
#include <vector>
using namespace std;
int N, M, k, t, p, q;
long long subject[1000];
vector<int> ans;
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N;
for (int i = 0; i < N; i++)
{
cin >> k;
for (int j = 0; j < k; j++)
{
cin >> t;
subject[i] += ((long long)1 << t);
}
}
cin >> M;
for (int i = 0; i < M; i++)
{
cin >> p;
long long temp = 0;
int cnt = 0;
for (int j = 0; j < p; j++)
{
cin >> q;
temp += ((long long)1 << q);
}
for (int j = 0; j < N; j++)
{
if ((subject[j] & temp) == subject[j]) cnt++;
}
ans.push_back(cnt);
}
for (int i = 0; i < ans.size(); i++)
{
cout << ans[i] << "\n";
}
return 0;
}
Bitmasking 관련 문제였다.
Baekjoon_Link 👈 Click here