#include <algorithm>
#include <iostream>
#include <vector>
#include <string>
#include <random>

using namespace std;

class Game
{
public:
    Game(string const & name, int min_players, int max_players, int time)
        : name{name}, min_players{min_players}, max_players{max_players}, time{time}
    {}

    bool filter_players(int N) const
    {
        return N >= min_players && N <= max_players;
    }

    bool filter_time(int N) const
    {
        return N >= time*0.8 && N <= time*1.2;
    }

    string get_name() const
    {
        return name;
    }
private:
    string name;
    int min_players;
    int max_players;
    int time;
};

int main()
{
                            // arguments are name, players (min,max) and time
    vector<Game> games { Game{"Pandemic", 2,4,45},
                         Game{"Tsuro", 2,8,30},
                         Game{"Twilight Imperium", 4,8,300},
                         Game{"Carcasonne", 2,5,45}
    };
    
    cout << "Hur många spelare: ";
    int players, time;
    cin >> players;
    cout << "Hur lång tid har ni (minuter): ";
    cin >> time;
    
    games.erase(remove_if(begin(games), end(games), 
                [players,time](Game const & g){
                    return !(g.filter_players(players) && g.filter_time(time));
                }), end(games));

    if ( games.empty() )
    {
        cout << "Inga spel matchade :(" << endl;
    }
    else
    {
        random_device rnd;
        uniform_int_distribution<int> dist{0,games.size()-1};
        Game & game = games.at( dist(rnd) );
        cout << "Slumpat spel: " << game.get_name() << endl;
    }

}