public abstract class Member {
	abstract public double calcPay();
}

class HourlyMember extends Member {
	double rate;
	int hours;
	public double calcPay() {
		return rate * hours;
	}
}

class SalariedMember extends Member {
	double salary;
	public double calcPay() {
		return salary/12;
	}
}

class CommissionedMember extends Member {
	double sales;
	public double calcPay() {
		return .1 * sales;
	}
}