#include "bits/stdc++.h"

#define ALL(v) (v).begin(),(v).end()

using namespace std;


int main() {
    int i, j, k;
    int x, y, a, b;

    int num_query;
    cin >> num_query;

    array<int, 30> tables;
    fill(ALL(tables), 0);

    map<string, array<int,30>> orders;

    for (int idx_query = 0; idx_query < num_query; ++idx_query) {
        int type;

        cin >> type;

        switch (type)
        {
        case 0: {
            // okyakusama has come
            int osuwari, m;
            cin >> osuwari >> m;

            assert(!tables[osuwari]);
            tables[osuwari] = true;

            for (i = 0; i < m; ++i) {
                string sushi;
                cin >> sushi;
                orders[sushi][osuwari] += 1;
            }

            break;
        }
        case 1: {
            // sushi has come

            string sushi;
            cin >> sushi;

            array<int, 30> &rail = orders[sushi];

            for (i = 1; i <= 20; ++i) {
                if (0 < rail[i]) {
                    cout << i << endl;
                    rail[i] -= 1;
                    break;
                }
            }
            if (i == 21) cout << -1 << endl;

            break;
        }
        case 2: {
            // okyakusama has gone
            int osuwari;

            cin >> osuwari;

            assert(tables[osuwari]);
            tables[osuwari] = false;

            for (auto& p : orders) {
                auto& order = p.second;
                order[osuwari] = 0;
            }

            break;
        }
        default:
            assert(type);
        }
    }
    return 0;
}