template <class T>
class HeavyIndex : public Index<T>, public MoveableAndDeepCopyOption<HeavyIndex<T>>
{
	typedef Index<T> B;
public:
	T& Add(T&& x, unsigned _hash)
	{
		T& t = B::key.Add(pick(x));
		B::hash.Add(_hash);
		return t;
	}
	T& Add(T&& x) { return Add(pick(x), B::hashfn(x)); }
	int FindAdd(T&& x, unsigned _hash)
	{
		int i = B::Find(x, _hash);
		if(i >= 0) return i;
		i = B::key.GetCount();
		Add(pick(x), _hash);
		return i;
	}
	int FindAdd(T&& x) { return FindAdd(pick(x), B::hashfn(x)); }
};