package com.danilyanich;

import java.io.*;
import java.util.*;

public class Main {

    static class Task {
        public String question;
        public List<String> answers;
        public int correct;

        public Task() {
            this.answers = new LinkedList<>();
        }

        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder("question: ").append(question).append("?\n");
            int count = 1;
            for (String answer : answers) {
                sb.append(count).append(": ").append(answer).append(".\n");
            }
            return sb.toString();
        }
    }

    static class User {
        public String surname;
        public String name;
        public int course;
        public int group;
    }

    static class Test {
        private List<Task> tasks;
        private User user;

        int size;
        int correct = 0;

        public Test(List<Task> tasks, User user) {
            this.tasks = tasks;
            this.user = user;
            size = tasks.size();
        }

        public boolean hasNextTask() {
            return !tasks.isEmpty();
        }

        public String nextTask() {
            Task task = tasks.get(0);
            tasks.remove(0);
            return task.toString();
        }

        public void setAnswer(int i) {
            if (tasks.get(0).correct == i)
                correct++;
        }

        public double getStatistics() {
            return correct / (double) size;
        }
    }

    public static File test = new File("test.txt");

    public static void main(String[] args) {
        try {
            List<Task> tasks = parseTest(test);
            System.out.println("user(surname, name, course, group): ");
            User user = parseUser(System.in);
            Test test = new Test(tasks, user);
            Scanner scanner = new Scanner(System.in);
            while (test.hasNextTask()) {
                System.out.println(test.nextTask());
                System.out.println("answer: ");
                test.setAnswer(scanner.nextInt());
            }
            System.out.println("stat: " + test.getStatistics());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private static User parseUser(InputStream in) throws Exception {
        Scanner scanner = new Scanner(in);
        User user = new User();
        try {
            user.surname = scanner.next();
            user.name = scanner.next();
            user.course = scanner.nextInt();
            user.group = scanner.nextInt();
        } catch (NoSuchElementException e) {
            throw new Exception("wrong format");
        }
        return user;
    }

    private static List<Task> parseTest(File test) throws Exception {
        List<Task> tasks = new LinkedList<>();
        Scanner input = new Scanner(test);
        try {
            while (input.hasNext()) {
                Task task = new Task();
                task.question = input.nextLine();
                while (input.hasNextLine() && !input.hasNextInt())
                    task.answers.add(input.nextLine());
                task.correct = input.nextInt();
            }
        } catch (NoSuchElementException e) {
            throw new Exception("wrong file format");
        }
        return tasks;
    }
}