#include <iostream>
#include <vector>
#include <string>

class Artwork {
public:
    Artwork(const std::string& author, const std::string& title, int birthYear, const std::string& category)
        : author(author), title(title), birthYear(birthYear), category(category) {}

    virtual void displayInfo() const {
        std::cout << "Author: " << author << ", Title: " << title << ", Birth Year: " << birthYear << ", Category: " << category;
    }

    virtual ~Artwork() = default;

private:
    std::string author;
    std::string title;
    int birthYear;
    std::string category;
};

class Painting : public Artwork {
public:
    Painting(const std::string& author, const std::string& title, int birthYear, const std::string& category, const std::string& size)
        : Artwork(author, title, birthYear, category), size(size) {}

    void displayInfo() const override {
        Artwork::displayInfo();
        std::cout << ", Size: " << size;
    }

private:
    std::string size;
};

class Music : public Artwork {
public:
    Music(const std::string& author, const std::string& title, int birthYear, const std::string& category, const std::string& content)
        : Artwork(author, title, birthYear, category), content(content) {}

    void displayInfo() const override {
        Artwork::displayInfo();
        std::cout << ", Content: " << content;
    }

private:
    std::string content;
};

class Chamber : public Music {
public:
    Chamber(const std::string& author, const std::string& title, int birthYear, const std::string& content, int numPerformers)
        : Music(author, title, birthYear, "Chamber", content), numPerformers(numPerformers) {}

    void displayInfo() const override {
        Music::displayInfo();
        std::cout << ", Number of Performers: " << numPerformers;
    }

private:
    int numPerformers;
};

int main() {
    std::vector<Artwork*> artworks;

    artworks.push_back(new Painting("Artist", "Painting", 2020, "Painting", "30x40"));
    artworks.push_back(new Music("Composer", "Music", 2021, "Music", "Symphony"));
    artworks.push_back(new Chamber("Composer", "Chamber", 2022, "Quartet", 4));


    for (const auto& artwork : artworks) {
        artwork->displayInfo();
        std::cout << std::endl;
    }

  
    for (const auto& artwork : artworks) {
        delete artwork;
    }

    return 0;
}