class Manager{

    private String name;


    //create Manager object by providing name
    Manager(String managerName ){
        this.name        = managerName;
    }

    //only manager can change his name
    private void changeName(String managerName){
        this.name = managerName;
    }


    //manager can fire any selected Employee
    public void fireEmployee(Employee emp){
        emp.changeWorkStat(false);
    }


}

/* --------------------------- */


class Employee{
    private String name;
    private String designation;
    private boolean workStat;

    Employee(String name ,String designation ){
        this.designation     = designation;
        this.name            = name;
        this.workStat        = true;
    }

    //only Employee can change his name
    private void changeName(String empName){
        this.name = empName;
    }

    //to fire the employee manager can execute this method
    public void changeWorkStat(boolean stat){
        this.workStat = stat;
    }

}

class Manager { /* ... personal data ... */ }
class Employee { /* ... personal data ... */ }

class StaffRegistry
{
    void hire(Manager supervisor, Employee employee, Designation designation) { /* ... */ }
    void fire(Manager supervisor, Employee employee) { /* ... */ }
    boolean isEmployed(Employee employee) { /* ... */ }
    // ...
}