// poly1.java
class Employee {
    public static final int BASE = 10000;
    protected String name;
    protected double salary;
    protected double rank = 1;
    Employee(String name)      { this.name=name; }
    protected void setSalary() { salary = BASE*rank;  }
    public double getSalary()     { return salary; }
    public static double totalPay(Employee[] e) {
	double total = 0;
	for(int i = 0; i < e.length; i++)
	    total += e[i].getSalary();
	return total;
    }
}
class Pion extends Employee {
    Pion(String name, int rank) {
	super(name);
	this.rank=rank;
	setSalary();
    }
}
class Boss extends Employee {
    Boss(String name, int rank) {
	super(name);
	this.rank=rank;
	setSalary();
    }
    protected void setSalary() {
	salary = 10*BASE*rank;
    }
}

public class poly1 {
    public static void main(String[] args) {
	Employee[] e = { (Employee) new Pion("E1",1),
			 (Employee) new Pion("E2",2),
			 (Employee) new Boss("B1",1)
	   	       };
	
	System.out.println(Employee.totalPay(e));
    }
}
// output: 130000