/**
 * A Component with some common function implementation
 * You can abstract it.
 */
import java.util.*;

public class Employee {
 String name;
 float salary;
 Vector subordinates;
 boolean isLeaf;
 Employee parent = null;

 //-------------------------------------------
 public Employee(String _name, float _salary) {
 name = _name;
 salary = _salary;
 subordinates = new Vector();
 isLeaf = false;
 }
 //-------------------------------------------
 public Employee(Employee _parent, String _name, float _salary) {
 name = _name;
 salary = _salary;
 parent = _parent;
 subordinates = new Vector();
 isLeaf = false;
 }
 //-------------------------------------------
 public void setLeaf(boolean b) {
 isLeaf = b; //if true, do not allow children
 }
 //-------------------------------------------
 public float getSalary() {
 return salary;
 }
 //-------------------------------------------
 public String getName() {
 return name;
 }
 //-------------------------------------------
 public boolean add(Employee e) {
 if (! isLeaf) { 
 subordinates.addElement(e);
 }
 return isLeaf; //false if unsuccessful
 }
 //-------------------------------------------
 public void remove(Employee e) {
 if (! isLeaf) {
 subordinates.removeElement(e);
 }
 }
 //-------------------------------------------
 public Enumeration elements() {
 return subordinates.elements();
 }
 //-------------------------------------------
 public Employee getChild(String s) {
 Employee newEmp = null;

 if(getName().equals(s)) {
 return this;
 } else {
 boolean found = false;
 Enumeration e = elements();
 while(e.hasMoreElements() && (! found)) { 
 newEmp = (Employee)e.nextElement();
 found = newEmp.getName().equals(s);
 if (! found) {
 newEmp = newEmp.getChild(s);
 found =(newEmp != null);
 }
 }
 if (found) {
 return newEmp;
 } else {
 return null;
 }
 }
 }
 //-------------------------------------------
 public float getSalaries() {
 float sum = salary;
 for(int i = 0; i < subordinates.size(); i++) {
 sum += ((Employee)subordinates.elementAt(i)).getSalaries();
 }
 return sum;
 }
 
}