#include <CGAL/Homogeneous.h>
#include <CGAL/Extended_homogeneous.h>
#include <CGAL/Nef_polyhedron_3.h>
#include <CGAL/IO/Nef_polyhedron_iostream_3.h>
#include <fstream>
int main() {
Nef_polyhedron_E E;
Nef_polyhedron_S S;
std::cin >> E;
if(E.is_bounded()) {
std::ofstream out("temp.nef3");
out << E;
std::ifstream in("temp.nef3");
in >> S;
}
}