import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

class Musician {
    protected String name;
    protected String number;
    protected String address;

    public Musician(String name, String number, String address) {
        this.name = name;
        this.number = number;
        this.address = address;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}


class Group{
    protected Musician[] group = new Musician[10];

    public Group(){

    }

    public Group(Musician[] group) {
        this.group = group;
    }

    public Musician[] getGroup() {
        return group;
    }

    public void setGroup(Musician[] group) {
        this.group = group;
    }
}

abstract class AudioDevice{
    protected Group group;
    protected String albumName;

    public abstract String[] getTracks();
    public abstract double getLength();

    @Override
    public String toString() {
        return  "Group: " + group +
                ", Album name: '" + albumName;
    }

    public Group getGroup() {
        return group;
    }

    public void setGroup(Group group) {
        this.group = group;
    }

    public String getAlbumName() {
        return albumName;
    }

    public void setAlbumName(String albumName) {
        this.albumName = albumName;
    }
}

class Song{
    protected int number;
    protected double songLength;
    protected String name;

    public Song(int number, double songLength, String name) {
        this.number = number;
        this.songLength = songLength;
        this.name = name;
    }


    public int getNumber() {
        return number;
    }

    public void setNumber(int number) {
        this.number = number;
    }

    public double getSongLength() {
        return songLength;
    }

    public void setSongLength(double songLength) {
        this.songLength = songLength;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return  "Number: " + number +
                ", Length of the song: " + songLength +
                ", Name of the song: '" + name + '\n';
    }
}

class CD extends AudioDevice{
    protected Song[] songs = new Song[30];

    public CD(){

    }

    public CD(Song[] songs) {
        this.songs = songs;
    }

    public String[] getTracks(){
        String[] songNames = new String[30];
        for(int i = 0; i < 30; i++) {
            songNames[i] = songs[i].getName();
        }
        return songNames;
    }
    public double getLength(){
        double totalLength = 0;
        for (Song song: songs){
            totalLength += song.getSongLength();
        }
        return totalLength;
    }

    public Song[] getSongs() {
        return songs;
    }

    public void setSongs(Song[] songs) {
        this.songs = songs;
    }

    @Override
    public String toString() {
        StringBuilder str = new StringBuilder();
        for(Song song: this.songs){
            str.append(song.toString());
        }
        return  super.toString() + str;
    }
}

class Store{
    ArrayList<CD> albums = new ArrayList<>();

    public Store(){

    }

    public Store(ArrayList<CD> albums) {
        this.albums = albums;
    }

    public void addAlbum(CD albumToAdd){
        this.albums.add(albumToAdd);
    }

    public void printByMusician(Musician musicianToSearch){
        for(CD album: this.albums){
            for (Musician musician: album.getGroup().getGroup()){
                if(musician.equals(musicianToSearch)){
                    System.out.println(album);
                }
            }

        }
    }
    
}