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

using namespace std;

class List
{
public:
    List() = default;
    
    virtual ~List() = default;

    virtual void display() = 0;

    virtual void push_back(string const& element) = 0;
};

class Description : public List
{
public:
    Description() : elements{} {}

    void push_back(string const& element) override
    {
	int splitpos = element.find_first_of(" ");
	elements.emplace_back(element.substr(0, splitpos), element.substr(splitpos));
    }

    void display() override
    {
	for ( auto element: elements )
	{
	    cout << element.first << ": " << element.second << '\n';
	}
    }
	
private:
    vector<pair<string, string>> elements;
	    
};

class Enumerate : public List
{
public:
    Enumerate() : elements{} {}

    void push_back(string const& element) override
    {
	elements.push_back(element);
    }

    void display() override
    {
	for ( size_t i{0}; i<elements.size(); ++i )
	{
	    cout << i << ": " << elements[i] << '\n';
	}
	cout << endl;
    }

private:
    vector<string> elements;
};


 

int main()
{
    vector<List*> html_lists{new Enumerate{}, new Description{}};
    html_lists[0] -> push_back("Nemesis");
    html_lists[0] -> push_back("Gloomhaven");
    html_lists[0] -> push_back("VirginQueen");

    html_lists[1] -> push_back("Nemesis SciFi survival horror game");
    html_lists[1] -> push_back("Gloomhaven Fantasy legacy game");
    html_lists[1] -> push_back("VirginQueen GMT wargame set in the Elizabethian era");
    
    
    for( List* html_list : html_lists )
    {
	html_list -> display();
    }

    for( List* html_list : html_lists )
    {
	delete html_list;
    }

}