import java.io.InputStream;
import java.io.PrintWriter;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.PriorityQueue;
import java.util.Scanner;
import java.util.Set;
import java.util.Stack;
import java.util.TreeMap;
import java.util.TreeSet;

import static java.util.Comparator.*;

public class Main {
    public static void main(String[] args) {
        PrintWriter out = new PrintWriter(System.out);
        Solver solver = new Solver(System.in, out);
        solver.solve();
        out.close();
    }
}
class Solver {
	Scanner sc;
	PrintWriter out;
    public Solver(InputStream in, PrintWriter out) {
    	sc = new Scanner(in);
    	this.out = out;
    }
    // ==================================================================
    Map<Integer, Map<String, Integer>> data = new TreeMap<>();
    public void solve() {
    	int N = Integer.parseInt(sc.next());
    	int cmd, no, wk;
    	Integer cnt;
    	boolean f;
    	Map<String, Integer> map;
    	String name;
    	for (int i = 0; i < N; i++) {
        	cmd = Integer.parseInt(sc.next());
        	if(cmd == 0) {
            	no = Integer.parseInt(sc.next());
        		map = new HashMap<>();
        		data.put(no, map);
            	wk = Integer.parseInt(sc.next());
//				out.println("登録　　席 = " + no + "  ネタの数　= " + wk);
        		for (int j = 0; j < wk; j++) {
        			name = sc.next();
					cnt = map.get(name);
					if(cnt == null)		map.put(name, 1);
					else				map.put(name,  cnt + 1);
//					out.println("　　ネタ　[" + name + "] = " + map.get(name));
				}
        	} else if(cmd == 1) {
        		name = sc.next();
//        		out.println("回ってきた　[" + name + "]");
        		f = false;
        		for(Integer key : data.keySet()) {
					map = data.get(key);
					cnt = map.get(name);
//					out.println("　席  = " + key + "  ネタの数　= " + cnt);
					if(cnt == null)		continue;
					else if(cnt > 1)	map.put(name,  cnt - 1);
					else				map.remove(name);
					out.println(key);
					f = true;
					break;
				}
        		if(!f)	out.println(-1);
        	} else {
            	no = Integer.parseInt(sc.next());
//            	out.println("席  = " + no + "  会計へ");
            	data.remove(no);
        	}
		}
    }
}