import java.util.Scanner;

class Person
{
     String Name;
     String Email;
     int Age;
    public Person(String name, String email, int age) {
        Name = name;
        Email = email;
        Age = age;
    }
    public void Identify()
    {
        System.out.println("Name: " + Name + " Email: " + Email + " Age: " + Age);
    }
    public String getName() {
        return Name;
    }
    public String getEmail() {
        return Email;
    }
    public int getAge() {
        return Age;
    }

}
interface Worker
{
    int getSalary();
}
interface AcademicInterest
{
    String getInterest();
}

class Student extends Person implements AcademicInterest
{
    int avgrade;
    String interest;
    public Student(String name, String email, int age,String interest, int avgrade) {
        super(name, email, age);
        this.interest = interest;
        this.avgrade = avgrade;
    }

    @Override
    public String getInterest() {
        return interest;
    }
    public int getAvgrade()
    {
        return avgrade;
    }

}
class Teacher extends Person implements Worker,AcademicInterest
{
    int rating;
    String interest;
    int salary;
    public Teacher(String name, String email, int age,String interest,int rating,int salary) {
        super(name, email, age);
        this.rating = rating;
        this.interest = interest;
        this.salary = salary;
    }
    @Override
    public String getInterest() {
        return interest;
    }
    @Override
    public int getSalary() {
        return salary;
    }
    int getRating()
    {
        return rating;
    }
    @Override
    public void Identify()
    {
        System.out.println("{Teacher} " + "Name: " + Name + " Email: " + Email + " Age: " + Age);
    }

}
class Plummer extends Person implements Worker
{

    int salary;
    public Plummer(String name, String email, int age,int salary) {
        super(name, email, age);
        this.salary = salary;
    }
    @Override
    public void Identify()
    {
        System.out.println(Name + " is a plummer.");
    }
    @Override
    public int getSalary() {
        return salary;
    }
}
public class PersonWorkerTeacher  {
    public static void main(String [] args)
    {
        Person ppl[] = new Person[10];
        ppl[0]= new Person("Dan","mit@gmail.com",38);
        ppl[1]= new Plummer("John","john@gmail.com",48,15000);
        ppl[2]= new Student("Jacob","jacob@gmail.com",22,"Java",6);
        ppl[3] = new Student("Ian","ian@gmail.com",22,"Java",8);
        ppl[4]= new Student("Coolio", "coolio@gmail.com", 25, "Management", 9);
        ppl[5]= new Student("Mark","Mark@gmail.com",23,"Java",8);
        ppl[6] = new Teacher("Fran","fran@gmail.com",52,"Java",8,50000);
        ppl[7] = new Teacher("Richie", "richie@gmail.com", 52, "Java", 8, 50000);
        ppl[8]= new Teacher("Roger", "roger@gmail.com", 39, "Management", 8, 70000);
        ppl[9]= new Teacher("Homer", "homer@gmail.com", 42, "Management", 6, 40000);
        Worker worker = new Worker() {

            @Override
            public int getSalary() {
                return 100;
            }
        };
        Scanner in = new Scanner(System.in);
        System.out.println("Choose an option <enter its index>.\n");
        System.out.println("1: Identify all Workers with Salary bigger than 20000 MKD.\n");
        System.out.println("2: Identify all Teachers with Rating bigger than 7.\n");
        System.out.println("3: Count People with the same academic interest.\n");
        System.out.println("4: Group Students and Teachers that share same academic interest and have average grade and rating bigger than 8.\n");
        int choice;
        while(true)
        {
            choice = in.nextInt();
            if(choice == 0)
            {
                break;
            }
            else if(choice == 1)
            {
                for(int i = 0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getSalary()>20000)
                        {
                            tmp.Identify();
                        }
                    }
                    else if(ppl[i] instanceof Plummer)
                    {
                        Plummer tmp = (Plummer)ppl[i];
                        if(tmp.getSalary() > 20000)
                        {
                            tmp.Identify();
                        }
                    }
                }
            }
            else if(choice == 2)
            {
                for(int i=0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getRating() > 7)
                        {
                            tmp.Identify();
                        }
                    }
                }
            }
            else if(choice == 3)
            {
                int java = 0;
                int man = 0;
                int finance = 0;
                for(int i=0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getInterest().equals("Java"))
                        {
                            java++;
                        }
                        else if(tmp.getInterest().equals("Management"))
                        {
                            man++;
                        }
                        else finance++;
                    }
                    else if(ppl[i] instanceof Student)
                    {
                        Student tmp = (Student)ppl[i];
                        if(tmp.getInterest().equals("Java"))
                        {
                            java++;
                        }
                        else if(tmp.getInterest().equals("Management"))
                        {
                            man++;
                        }
                        else finance++;
                    }
                }
                System.out.println("Java: " + java + " Management: " + man + " Finance: " + finance);
            }
            else if(choice == 4)
            {
                System.out.println("Java: ");
                for(int i = 0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getInterest().equals("Java"))
                        {
                            if(tmp.getRating() >= 8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                    else if(ppl[i] instanceof Student)
                    {
                        Student tmp = (Student)ppl[i];
                        if(tmp.getInterest().equals("Java"))
                        {
                            if(tmp.getAvgrade() >=8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                }
                System.out.println("Management: ");
                for(int i = 0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getInterest().equals("Management"))
                        {
                            if(tmp.getRating() >= 8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                    else if(ppl[i] instanceof Student)
                    {
                        Student tmp = (Student)ppl[i];
                        if(tmp.getInterest().equals("Management"))
                        {
                            if(tmp.getAvgrade() >=8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                }
                System.out.println("Finance: ");
                for(int i = 0;i<ppl.length;i++)
                {
                    if(ppl[i] instanceof Teacher)
                    {
                        Teacher tmp = (Teacher)ppl[i];
                        if(tmp.getInterest().equals("Finance"))
                        {
                            if(tmp.getRating() >= 8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                    else if(ppl[i] instanceof Student)
                    {
                        Student tmp = (Student)ppl[i];
                        if(tmp.getInterest().equals("Finance"))
                        {
                            if(tmp.getAvgrade() >=8)
                            {
                                tmp.Identify();
                            }
                        }
                    }
                }

    }
            System.out.println("*******************************\n");
            System.out.println("Do you like to list more?<1-yes, 0-no>");
            int end = in.nextInt();
                        if (end == 1){
                            System.out.println("Choose an option <enter its index>.\n");
                            System.out.println("1: Identify all Workers with Salary bigger than 20000 MKD.\n");
                            System.out.println("2: Identify all Teachers with Rating bigger than 7.\n");
                            System.out.println("3: Count People with the same academic interest.\n");
                            System.out.println("4: Group Students and Teachers that share same academic interest and have average grade and rating bigger than 8.\n");
                        }
            if(end==0)
            {
                break;
            }

        }
    }
}