template<class Item>
class RCPointer {
	Item *item;
	unsigned *rc;
public:
	RCPointer(Item *i)
	  : item(i), rc(new unsigned(1))
	  {}
	RCPointer(const RCPointer &rcp)
	  : item(rcp.i), rc(rcp.rc)
	  { ++*rc; }
	virtual ~RCPointer()
	  { if(--*rc==0) { delete rc; delete item; }
	  }

	RCPointer& operator=(const RCPointer &rcp)
	  { if(--*rc==0) { delete rc; delete item; }
	    item=rcp.item; ++*(rc=rcp.rc);
	  }

	Item& operator*()
	  { return *item; }
	const Item& operator*() const
	  { return *item; }
	Item* operator->()
	  { return item; }
	const Item* operator->() const
	  { return item; }
};