import java.util.*;
import java.lang.*;
import java.io.*;

public class Bag {
    private List<Integer> data; // Declare a List to store elements
    private int maxSize;

    public Bag(int maxSize) {
        this.data = new ArrayList<>(); // Initialize the List
        this.maxSize = maxSize; // Set the maximum size of the Bag
    }

    public void add(int item) {
        if (data.size() < maxSize) { // Check if Bag is full
            data.add(item); // Add item to the List
        } else {
            System.out.println("Bag is full, cannot add more items."); // Print message if Bag is full
        }
    }

    public int getCurrentSize() {
        return data.size(); // Return the current number of elements
    }

    public boolean isFull() {
        return data.size() >= maxSize; // Check if the Bag is full
    }

    public boolean isEmpty() {
        return data.isEmpty(); // Check if the Bag is empty
    }

    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("Bag contents: ");
        for (int i = 0; i < data.size(); i++) {
            builder.append(data.get(i)); // Append each element of the List
            if (i < data.size() - 1) {
                builder.append(", ");
            }
        }
        return builder.toString(); // Convert StringBuilder to String
    }

    public static void main(String[] args) {
        int maxSize = 100;
        Bag bag = new Bag(maxSize);

        bag.add(5);
        bag.add(10);
        bag.add(5);
        bag.add(20);
        System.out.println(bag);

        // Print the current size, and check if the Bag is full or empty
        System.out.println("Current size: " + bag.getCurrentSize());
        System.out.println("Is full: " + (bag.isFull() ? "Yes" : "No"));
        System.out.println("Is empty: " + (bag.isEmpty() ? "Yes" : "No"));
    }
}