#include?
using?namespace?std;
class?staff
{
public:
	staff（double?bSalary）
	{
		basicSalary?=?bSalary;
	}
	virtual?void?input（）?=?0;
	virtual?void?output（）?=?0;
protected:
	char?name[30];
	double?basicSalary;
};
class?teacher?:?public?staff
{
public:
	teacher（int?basicsalary?=?3000）?:?staff（basicsalary）?{?}
	void?input（）
	{
		cout?<		cin?>>?name;
		cout?<		cin?>>?title;
		cout?<		cin?>>?coursetime;
	}
	void?output（）
	{
		double?salary;
		switch?（title）
		{
		case?1:???salary?=?basicSalary?+?coursetime?*?50;??break;
		case?2:???salary?=?basicSalary?+?coursetime?*?30;??break;
		case?3:???salary?=?basicSalary?+?coursetime?*?20;
		}
		cout?<	}
protected:
	int?coursetime;