import java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        StringBuilder sb = new StringBuilder();
        TreeMap<Integer, HashMap<String, Integer>> place = new TreeMap<>();
        while (n-- > 0) {
            int type = sc.nextInt();
            if (type == 0) {
                int k = sc.nextInt();
                int x = sc.nextInt();
                HashMap<String, Integer> tmp = new HashMap<>();
                for (int i = 0; i < x; i++) {
                    String menu = sc.next();
                    tmp.put(menu, tmp.getOrDefault(menu, 0) + 1);
                }
                place.put(k, tmp);
            } else if (type == 1) {
                String menu = sc.next();
                int ans = -1;
                for (int x : place.keySet()) {
                    if (place.get(x).containsKey(menu)) {
                        if (place.get(x).get(menu) == 1) {
                            place.get(x).remove(menu);
                        } else {
                            place.get(x).put(menu, place.get(x).get(menu) - 1);
                        }
                        ans = x;
                        break;
                    }
                }
                sb.append(ans).append("\n");
            } else {
                place.remove(sc.nextInt());
            }
        }
        System.out.print(sb);
    }
}
class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}