#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;

class publication
{
protected:
	string name;
	float price;

public:
 	publication(): price(0), name("N/A") {}

 	void putdata()
 	{
 		cout << "Name: "; cin >> name;
 		cout << "Price: "; cin >> price;
 	}
 	void getdata() const
 	{
 		cout << "Name: " << name << "\n";
 		cout << "Price: " << price << "\n";
 	}
};

class sales
{
protected:
	float sal[3];
public:
	sales() {sal[0] = 0, sal[1] = 0; sal[2] = 0;}
	sales(float a, float b, float c) {sal[0] = a; sal[1] = b; sal[2] = c;}

	void putdata()
	{
		cout << "Sales month ago: "; cin >> sal[0];
		cout << "Sales 2 months ago: "; cin >> sal[1];
		cout << "Sales 3 months ago: "; cin >> sal[2];
	}
	void getdata() const
	{
		cout << "Sales month ago: " << sal[0] << "\n";
		cout << "Sales 2 months ago: " << sal[1] << "\n";
		cout << "Sales 3 months ago: " << sal[2] << "\n";
	}
};


class book: public publication, public sales
 {
protected:
	int num;
public:
 	book(): num(0), publication() {}

 	void putdata()
 	{
 		publication::putdata();
 		cout << "Number of pages: "; cin >> num;
 		sales::putdata();
 	}
 	void getdata() const
 	{
 		publication::getdata();
 		cout << "Number of pages: " << num << "\n";
 		sales::getdata();
 	}

};

class type: public publication, public sales
 {
protected:
 	float time;
public:
 	type(): time(0), publication() {}

 	void putdata()
 	{
 		publication::putdata();
 		cout << "Length of record: "; cin >> time;
 		sales::putdata();
 	}
 	void getdata()
 	{
 		publication::getdata();
 		cout << "Length of record: " << time << "\n";
 		sales::getdata();
 	}

};

class disk: public publication, public sales
{
protected:
	enum type_disk{dvd, cd};
	type_disk Disk;
public:
	disk(): publication(), sales() {}
	void putdata()
	{
		publication::putdata();
		sales::putdata();

		cout << "Disk type(cd, dvd): ";
		string temp; cin >> temp;
		while (!(temp == "cd" or temp == "dvd"))
		{
			cout << "Error, try again \nDisk type(cd, dvd): ";
			cin >> temp;
		}
		if (temp == "dvd") Disk = dvd;
		else
		{
			if (temp == "cd") Disk = cd;
			else {cout << "Unexpecter error!"; exit(11);}
		}
	}
	void getdata() const
	{
		publication::getdata();
		sales::getdata();
		cout << "Disk type(CD, DVD): ";
		if (Disk == cd) cout << "cd" << "\n";
		else cout << "dvd" << "\n";
	}
};

 int main()
 {
 	book book1;
 	type type1;
 	disk disk1;

 	cout << "Book 1:\n";
 	book1.putdata();
 	cout << "\nRecord 1:\n";
 	type1.putdata();
 	cout << "\nDisk 1:\n";
 	disk1.putdata();
    cout << "\n";
 	book1.getdata();
 	cout << "\n";
 	type1.getdata();

 	cout << "\n";
 	disk1.getdata();
 	return 0;
 }