// Funkcyjny
import java.util.*;
import java.util.stream.Collectors;

class Task {
    private int id;
    private String description;

    public Task(int id, String description) {
        this.id = id;
        this.description = description;
    }

    public int getId() {
        return id;
    }

    public String getDescription() {
        return description;
    }

    @Override
    public String toString() {
        return "Task{" +
                "id=" + id +
                ", description='" + description + '\'' +
                '}';
    }
}

class TaskManager {
    private List<Task> tasks;
    private int nextId;

    public TaskManager() {
        tasks = new ArrayList<>();
        nextId = 1;
    }

    public Task addTask(String description) {
        Task newTask = new Task(nextId++, description);
        tasks.add(newTask);
        return newTask;
    }

    public boolean deleteTask(int id) {
        return tasks.removeIf(task -> task.getId() == id);
    }

    public List<Task> getTasks() {
        return new ArrayList<>(tasks);
    }

    public Optional<Task> getTaskById(int id) {
        return tasks.stream().filter(task -> task.getId() == id).findFirst();
    }

    public void printTasks() {
        tasks.forEach(System.out::println);
    }

    public static void main(String[] args) {
        TaskManager taskManager = new TaskManager();

        taskManager.addTask("Finish homework");
        taskManager.addTask("Read book");

        System.out.println("All tasks:");
        taskManager.printTasks();

        taskManager.deleteTask(1);

        System.out.println("Tasks after deletion:");
        taskManager.printTasks();
    }
}