#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

int main()
{
    int q;
    cin >> q;

    vector<multiset<string> > v(21);
    while(--q >= 0){
        int type;
        cin >> type;

        if(type == 0){
            int i, n;
            cin >> i >> n;
            while(--n >= 0){
                string s;
                cin >> s;
                v[i].insert(s);
            }
        }
        else if(type == 1){
            string s;
            cin >> s;
            bool ok = false;
            for(int i=1; i<=20; ++i){
                auto it = v[i].find(s);
                if(it != v[i].end()){
                    v[i].erase(it);
                    cout << i << endl;
                    ok = true;
                    break;
                }
            }
            if(!ok)
                cout << -1 << endl;
        }
        else{
            int i;
            cin >> i;
            v[i].clear();
        }
    }

    return 0;
}