#include<bits/stdc++.h>
using namespace std;
using ll = long long;

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    ll N;
    cin >> N;

    map<string, ll> mp[25];

    while(N--){
        ll id; cin >> id;

        if(id==0){
            ll seat;
            cin >> seat;

            ll m; cin >> m;

            FOR(i, 0, m){
                string neta; cin >> neta;
                mp[seat][neta]++;
            }
        }
        else if(id==1){
            string neta; cin >> neta;
            bool sushi_taken = false;
            FOR(i, 1, 21){
                if(mp[i][neta]>0){
                    mp[i][neta]--;
                    p(i);
                    sushi_taken = true;
                    break;
                }
            }
            if(!sushi_taken) p(-1);
        }
        else{
            ll C; cin >> C;
            mp[C].clear();
        }
    }

    return 0;
}