#include <vector>

template<typename Point, typename Arc>
class Graph
{
    typedef std::vector<Point> Points;
    typedef std::vector<Arc> Arcs;
    Points points_;
    Arcs arcs_;
public:
    void addPoint( const Point& p )
    {
        points_.push_back( p );
    }
    void addArc( const Arc& a )
    {
        arcs_.push_back( a );
    }
};

class Atom {};
class Liaison {};

typedef Graph<Atom, Liaison> Molecule;

class Post {};
class Lien {};

class Reseaux : public Graph<Post, Lien>
{};

int wmain()
{
    Molecule m;
    m.addPoint( Atom() );
    m.addArc( Liaison() );

    Reseaux r;
    r.addPoint( Post() );
    r.addArc( Lien() );

//    r.addPoint( Atom() ); compile error
    return 0;
}