#include <CGAL/Homogeneous.h>
#include <CGAL/OFF_to_nef_3.h>
int main()
{
   Nef_3 N;
   std::cout << "Nef vertices: "
             << N.number_of_vertices() << std::endl;
   std::cout << "Nef edges: "
             << N.number_of_edges() << std::endl;
   std::cout << "Nef facets: "
             << N.number_of_facets() << std::endl;
   std::cout << "Nef volumes: "
             << N.number_of_volumes() << std::endl;
   std::cout << "number of discarded facets: "
             << discarded << std::endl;
   return 0;
}