#include <boost/archive/polymorphic_oarchive.hpp>
#include <boost/archive/polymorphic_iarchive.hpp>
-#define POLYMORPHIC_BASE_IMPORT
#include "polymorphic_base.hpp"
#include "polymorphic_derived1.hpp"
-#define POLYMORPHIC_DERIVED2_IMPORT
#include "polymorphic_derived2.hpp"
// save derived polymorphic class