#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/boost/graph/io.h>
#include <iostream>
#include <fstream>
#include <boost/graph/connected_components.hpp>
typedef boost::graph_traits<Mesh>::vertex_descriptor vertex_descriptor;
int main()
{
Mesh sm;
CGAL::make_quad(Point(0,0,0), Point(1,0,0),Point(1,1,0),Point(0,1,0), sm);
CGAL::make_quad(Point(0,0,1), Point(1,0,1),Point(1,1,1),Point(0,1,1), sm);
std::ofstream out("out.inp");
CGAL::write_inp(out, sm, "out.inp", "S4R");
return 0;
}