class SharedBuffer {
    private int number;
    private boolean available = false;

    public synchronized void produce(int num) {
        try {
            while (available) {
                wait(); // Wait if consumer hasn't consumed previous number
            }
            number = num;
            System.out.println("Produced: " + number);
            available = true;
            notify(); // Notify the consumer
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
    }

    public synchronized void consume() {
        try {
            while (!available) {
                wait(); // Wait until a number is available
            }
            System.out.println("Consumed: " + number);
            available = false;
            notify(); // Notify the producer
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
    }
}

class Producer extends Thread {
    private final SharedBuffer buffer;

    public Producer(SharedBuffer buffer) {
        this.buffer = buffer;
    }

    public void run() {
        for (int i = 1; i <= 5; i++) {
            buffer.produce(i);
            try {
                Thread.sleep(500); // Simulate time to produce
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
    }
}

class Consumer extends Thread {
    private final SharedBuffer buffer;

    public Consumer(SharedBuffer buffer) {
        this.buffer = buffer;
    }

    public void run() {
        for (int i = 1; i <= 5; i++) {
            buffer.consume();
            try {
                Thread.sleep(500); // Simulate time to consume
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
    }
}

public class ProducerConsumerDemo {
    public static void main(String[] args) {
        SharedBuffer buffer = new SharedBuffer();
        Producer producer = new Producer(buffer);
        Consumer consumer = new Consumer(buffer);

        producer.start();
        consumer.start();
    }
}