House_Party

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class House_Party {
    public static void main(String[] args) throws IOException {

        BufferedReader reader =
                new BufferedReader(
                        new InputStreamReader(System.in));



        List<String> names = new ArrayList<>();

        System.out.println("Enter number of people ");
        int number = Integer.parseInt(reader.readLine());
        while (number -- > 0 ) {
            String[] input = reader.readLine().split("\\s+");

            if (!input[2].equals("not")) {
                if (!names.contains(input[0])) {
                    names.add(input[0]);
                    System.out.printf("%s is added in the list, and %s is going to the party.\n", input[0], input[0]);
                } else {
                    System.out.printf("%s is in the list and %s is going to the party.\n", input[0], input[0]);

                }

            } else {
                if (names.contains(input[0])) {
                    names.remove(input[0]);
                    System.out.printf("%s is deleted from the list because %s is not going.\n", input[0], input[0]);

                } else {
                    System.out.printf("%s is not going to the party.", input[0]);
                }
            }
       System.out.println(String.join("\n", names));
      }
    }