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

struct seat {
	bool tmp;
	int m;
	string A[20];
};

int main() {
	int N, data, nC, j, k;
	string B;
	seat list[20] = {};
	cin >> N;
	for (int i = 0; i < N; ++i) {
		cin >> data;
		if (data == 0) {
			cin >> nC >> list[nC - 1].m;
			list[nC - 1].tmp = true;
			for (j = 0; j < list[nC - 1].m; ++j) cin >> list[nC - 1].A[j];
		}
		else if (data == 1) {
			cin >> B;
			for (j = 0; j < 20; ++j) {
				if (list[j].tmp == false) continue;
				for (k = 0; k < list[j].m; ++k) {
					if (list[j].A[k] == B) {
						list[j].A[k] = "";
						break;
					}
				}
				if (k != list[j].m) break;
			}
			if (j == 20) cout << -1;
			else cout << j + 1;
			cout << endl;
		}
		else {
			cin >> nC;
			list[nC - 1].tmp = false;
		}
	}
}