package exercise05;

import java.math.BigInteger;
import java.util.HashSet;
import java.util.Set;

public class Student extends Person {

	public Student(String name, int id) {
		super(name, id);
	}

	Set<Course> attends = new HashSet<>();

	@Override
	public BigInteger balance() {
		return BigInteger.valueOf(-20).multiply(BigInteger.valueOf(attends.size()));
	}
}