import java.util.ArrayList; import java.util.List; import java.util.Scanner; public class Main { public static void main(String[] args) { List customers = new ArrayList(); Scanner sc = new Scanner(System.in); int exec = Integer.parseInt(sc.nextLine()); for(int i = 0; i < exec; i++) { sc = new Scanner(System.in); String[] data = sc.nextLine().split(" "); int j = Integer.parseInt(data[0]); switch(j) { case 0: int table_id = Integer.parseInt(data[1]); List list = new ArrayList(); for(int p = 2; p < data.length; p++) { list.add(data[p]); } customers.add(new Customer(table_id, list)); break; case 1: customers.sort((x, y) -> x.getTableId() - y.getTableId()); Boolean flg = false; for (Customer c : customers) { if(c.getNetaList().contains(data[1])){ c.getNetaList().remove(data[1]); System.out.println(c.getTableId()); flg = true; break; } } if(!flg) { System.out.println("-1"); } break; case 2: for (Customer cc : customers) { if(cc.getTableId() == Integer.parseInt(data[1])){ customers.remove(cc); break; } } break; } } sc.close(); } } class Customer{ private int table_id; private List want_list; Customer(int id, List list){ this.want_list = list; this.table_id = id; } int getTableId(){ return this.table_id; } List getNetaList(){ return this.want_list; } }