#include <queue>

using namespace std;

class cStation {
protected:
	queue<int> items;
public:
	cStation *next;
	cStation();
	~cStation();
	void add(int item);
	virtual void work() = 0;
	virtual void pass() = 0;
	virtual void print() = 0;
	bool empty();
};

class cBucket : public cStation {
public:
	cBucket();
	~cBucket();
	void work();
	void pass();
	void print();
};

class cWork : public cStation {
private:
	int curTime, maxTime;
public:
	cWork(int t);
	~cWork();
	void work();
	void pass();
	void print();
};

class cAssembly {
private:
	cStation *line;
	void init();
	bool done();
public:
	cAssembly();
	~cAssembly();
	void run();
};