#include <iostream>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/convex_hull_2.h>
int main()
{
std::cout << ptr - result << " points on the convex hull:" << std::endl;
for(int i = 0; i < ptr - result; i++){
std::cout << result[i] << std::endl;
}
return 0;
}