import java.util.Scanner;

class Beginner
{
    static protected String name;
    static protected int roll;
    protected int ans;
    private int base_score;
    Beginner(String name, int rollNo , int score)
    {
        this.name = name;
        this.roll = rollNo;
        ans = 0;
        base_score = score;
    }

    protected void Questions()
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Hi " + name +" Welcome to Beginner Level");
        System.out.println("What is 1 + 2 ?");
        ans = sc.nextInt();
        if(ans == 3) base_score += 20;

        System.out.println("What is 4 + 5 ?");
        ans = sc.nextInt();
        if(ans == 9) base_score += 20;

        System.out.println("What is 1 + 1 ?");
        ans = sc.nextInt();
        if(ans == 2) base_score += 20;

        System.out.println("What is 4 + 1 ?");
        ans = sc.nextInt();
        if(ans == 5) base_score += 20;

        System.out.println("What is 4 + 3 ?");
        ans = sc.nextInt();
        if(ans == 7) base_score += 20;
    }

    protected int get_score ()
    {
        return base_score;
    }

    protected int get_lev_score()
    {
        return base_score;
    }
};

class Intermediate extends Beginner
{
    private int Inter_score;
    Intermediate(String name , int roll , int score)
    {
        super(name , roll , score);
        Inter_score = 0;
    }

    @Override
    protected void Questions()
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Hey :" + name + " Welcome to Intermediate level");
        System.out.println("What is 1 * 2 ?");
        ans = sc.nextInt();
        if(ans == 2) Inter_score += 20;

        System.out.println("What is 4 * 5 ?");
        ans = sc.nextInt();
        if(ans == 20) Inter_score += 20;

        System.out.println("What is 9 / 3 ?");
        ans = sc.nextInt();
        if(ans == 3) Inter_score += 20;

        System.out.println("What is 4 * 1 / 2 ?");
        ans = sc.nextInt();
        if(ans == 2) Inter_score += 20;

        System.out.println("What is 4 + 9 / 3  ?");
        ans = sc.nextInt();
        if(ans == 7) Inter_score += 20;

    }

    @Override
    protected int get_score ()
    {
        return (super.get_score() + Inter_score);
    }
    @Override
    protected int get_lev_score()
    {
        return Inter_score;
    }

}
class Advanced extends Intermediate
{
    private int Adv_score;
    Advanced(String name ,int roll , int score)
    {
        super(name , roll , score);
        Adv_score = 0;
    }

    @Override
    protected void Questions()
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("Hey :" + name + " Welcome to Advanced level");
        System.out.println("What is 7 mod 5 ?");
        ans = sc.nextInt();
        if(ans == (7 % 5)) Adv_score += 20;

        System.out.println("What is f'(0) if f(x) = x + sin(x) ?");
        ans = sc.nextInt();
        if(ans == 2) Adv_score += 20;

        System.out.println("What is the y value of minima of f(x) = x^2 + 1 ?");
        ans = sc.nextInt();
        if(ans == 1) Adv_score += 20;

        System.out.println("What is if f(x) = 3x^2 + 2x , F(5) = ? F(x) = integrated form of f(x) if C = 0");
        ans = sc.nextInt();
        if(ans == 150) Adv_score += 20;

        System.out.println("What is ((sin(45) * cosec(45)) + cosec(90) + tan(45) = ? arguments are in degrees ?");
        ans = sc.nextInt();
        if(ans == 3) Adv_score += 20;

    }


    protected int get_score()
    {
        return (super.get_score() + Adv_score);
    }
    protected int get_lev_score()
    {
        return (Adv_score);
    }



}

class ExamDriver
{
    public static void main(String args[])
    {
        String name ; int Rollno;
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter the Name of user: ");
        name = sc.nextLine();
        System.out.println("Enter the roll number of user");
        Rollno = sc.nextInt();
        Beginner ob_b = new Beginner( name , Rollno , 0);
        ob_b.Questions();
        System.out.println("Level Score: " + ob_b.get_lev_score() + "%");
        if(ob_b.get_lev_score() < 60)
        {
            System.out.println("You cannot progress further\n");
            return;
        }

        Intermediate ob_i = new Intermediate( name , Rollno , ob_b.get_score());
        ob_i.Questions();
        System.out.println("Level Score: " + ob_i.get_lev_score() + "%");
        if(ob_i.get_lev_score() < 60)
        {
            System.out.println("You cannot progress further\n");
            return;
        }
        Advanced ob_ad = new Advanced(name , Rollno , ob_i.get_score());
        ob_ad.Questions();

        System.out.println("Level Score: " + ob_ad.get_lev_score() + "%");
        System.out.println("Total Score is: " + ob_ad.get_score() / 3.0 + "%" );

    }
}