// abstract0

abstract class Employee {
    protected int salary;
    abstract public int getSalary();
}

abstract class Worker extends Employee {
}

class Pion extends Worker {
    public int getSalary() { return salary; }
}

public class abstract0 {
    public static void main(String[] args) {

	System.out.println(new Pion().getSalary());

    }
}

// output: 0