class Employee(private var _surname: String) {
  private var _fired: Boolean = false;

  Employee.increaseCounter();

  def surname = _surname;

  def surname_ (newSurname: String) = {
    _surname = newSurname;
  }

  def fired() = _fired;

  def fire() = {
    _fired = true;

    Employee.reduceCounter();
  }

  override def toString() : String = {
    var result = surname;

    if(fired()) {
      result = result + "(zwolniony)";
    }

    result;
  }
}

object Employee {
  private var _employeesAmount: Int = 0;

  def increaseCounter() = {
    _employeesAmount = _employeesAmount + 1;
  }
  def reduceCounter() = {
    _employeesAmount = _employeesAmount - 1;
  }

  def employeesAmount = _employeesAmount;
}

var hop = new Employee("Kokot");
hop.fire();
var siup = new Employee("Markiewicz");

println(hop);
println(Employee.employeesAmount);