class Food {
    private int amount;

    public Food(int amount) {
	this.amount = amount;
    }

    public synchronized int getAmount() {
	return amount;
    }

    public synchronized boolean removeFood() {
	if (amount > 0) {
	    amount--;
	    return true;
	} else
	    return false;
    }

    public synchronized void addFood(int value) {
	amount += value;
    }
}