#include"AllHead.h"

enum Plane_status{null,arriving,departing};

class Plane{
public:
	Plane();
	Plane(int flt,int time,Plane_status status);
	void refuse()const;
	void land(int time)const;
	void fly(int time)const;
	int started()const;
private:
	int flt_num;
	int clock_start;
	Plane_status state;
};