[NP] Насловна Страница

import java.util.*;

class CategoryNotFoundException extends Exception {
    private String category;

    public CategoryNotFoundException(String category) {
        this.category = category;
    }

    @Override
    public String getMessage() {
        return String.format("Category %s was not found", category);
    }
}


class Category {
    private String name;

    public Category(String name) {
        this.name = name;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Category category = (Category) o;

        return name != null ? name.equals(category.name) : category.name == null;
    }

    @Override
    public int hashCode() {
        return name != null ? name.hashCode() : 0;
    }
}

abstract class NewsItem {
    protected String title;
    protected Date date;
    protected Category category;

    public NewsItem(String title, Date date, Category category) {
        this.title = title;
        this.date = date;
        this.category = category;
    }

    public String getType() {
        return getClass().toString();
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public Date getDate() {
        return date;
    }

    public void setDate(Date date) {
        this.date = date;
    }

    public void setCategory(Category category) {
        this.category = category;
    }

    public Category getCategory() {
        return category;
    }

    public String getTeaser() {
        StringBuffer sb = new StringBuffer();

        /* Append title */
        sb.append(title);
        sb.append(System.lineSeparator());

        /* Append minutes */
        Date now = new Date();
        long minutes = (now.getTime() - getDate().getTime()) / 60000;
        sb.append(minutes);
        sb.append(System.lineSeparator());

        return sb.toString();
    }
}

class TextNewsItem extends NewsItem {
    private StringBuffer text;

    public TextNewsItem(String title, Date date, Category category, String text) {
        super(title, date, category);
        this.text = new StringBuffer(text);
    }

    public String getType() {
        return getClass().toString();
    }

    public String getTeaser() {
        StringBuffer sb = new StringBuffer();

        /* Append title and minutes */
        sb.append(super.getTeaser());

        /* Append teaser */
        if (text.length() > 80) {
            sb.append(text.subSequence(0, 80).toString());
        } else {
            sb.append(text.toString());
        }
        sb.append(System.lineSeparator());
        return sb.toString();
    }
}

class MediaNewsItem extends NewsItem {
    private String url;
    private int views;

    public MediaNewsItem(String title, Date date, Category category, String url, int views) {
        super(title, date, category);
        this.url = url;
        this.views = views;
    }

    public String getType() {
        return getClass().toString();
    }

    @Override
    public String getTeaser() {
        StringBuffer sb = new StringBuffer();

        /* Append title and minutes */
        sb.append(super.getTeaser());

        /* Append url */
        sb.append(url);
        sb.append(System.lineSeparator());

        /* Append visits */
        sb.append(views);
        sb.append(System.lineSeparator());

        return sb.toString();
    }
}

class FrontPage {
    ArrayList<NewsItem> items;
    Category categories[];

    public FrontPage(Category categories[]) {
        this.items = new ArrayList<>();
        this.categories = Arrays.copyOf(categories, categories.length);
    }

    public void addNewsItem(NewsItem newsItem) {
        items.add(newsItem);
    }

    public ArrayList<NewsItem> listByCategory(Category category) {
        ArrayList<NewsItem> select = new ArrayList<>();
        for (NewsItem item : items) {
            if (item.getCategory().equals(category)) {
                select.add(item);
            }
        }
        return select;
    }

    public ArrayList<NewsItem> listByCategoryName(String category) throws CategoryNotFoundException {
        Category temp = new Category(category);
        boolean exists = false;
        for (Category cat : categories) {
            if (cat.equals(temp)) {
                exists = true;
            }
        }
        if (!exists) {
            throw new CategoryNotFoundException(category);
        }

        /* Given that it exists */
        return listByCategory(temp);
    }

    @Override
    public String toString() {
        StringBuffer sb = new StringBuffer();
        for (NewsItem item : items) {
            sb.append(item.getTeaser());
        }
        return sb.toString();
    }
}

public class FrontPageTest {
    public static void main(String[] args) {
        // Reading
        Scanner scanner = new Scanner(System.in);
        String line = scanner.nextLine();
        String[] parts = line.split(" ");
        Category[] categories = new Category[parts.length];
        for (int i = 0; i < categories.length; ++i) {
            categories[i] = new Category(parts[i]);
        }
        int n = scanner.nextInt();
        scanner.nextLine();
        FrontPage frontPage = new FrontPage(categories);
        Calendar cal = Calendar.getInstance();
        for (int i = 0; i < n; ++i) {
            String title = scanner.nextLine();
            cal = Calendar.getInstance();
            int min = scanner.nextInt();
            cal.add(Calendar.MINUTE, -min);
            Date date = cal.getTime();
            scanner.nextLine();
            String text = scanner.nextLine();
            int categoryIndex = scanner.nextInt();
            scanner.nextLine();
            TextNewsItem tni = new TextNewsItem(title, date, categories[categoryIndex], text);
            frontPage.addNewsItem(tni);
        }

        n = scanner.nextInt();
        scanner.nextLine();
        for (int i = 0; i < n; ++i) {
            String title = scanner.nextLine();
            int min = scanner.nextInt();
            cal = Calendar.getInstance();
            cal.add(Calendar.MINUTE, -min);
            scanner.nextLine();
            Date date = cal.getTime();
            String url = scanner.nextLine();
            int views = scanner.nextInt();
            scanner.nextLine();
            int categoryIndex = scanner.nextInt();
            scanner.nextLine();
            MediaNewsItem mni = new MediaNewsItem(title, date, categories[categoryIndex], url, views);
            frontPage.addNewsItem(mni);
        }
        // Execution
        String category = scanner.nextLine();
        System.out.println(frontPage);
        for (Category c : categories) {
            System.out.println(frontPage.listByCategory(c).size());
        }
        try {
            System.out.println(frontPage.listByCategoryName(category).size());
        } catch (CategoryNotFoundException e) {
            System.out.println(e.getMessage());
        }
    }
}