#ifndef id4FAEF395B9ED47CB9D6B50B54C9A289A
#define id4FAEF395B9ED47CB9D6B50B54C9A289A

#include <cstddef>

namespace dk {
	namespace bt {
		template <std::size_t... I>
		struct index_seq {
		};

		namespace implem {
			template <std::size_t MIN, std::size_t MAX, std::size_t... I>
			struct range_builder;

			template <std::size_t MIN, std::size_t... I>
			struct range_builder<MIN, MIN, I...> {
				typedef index_seq<I...> type;
			};

			template <std::size_t MIN, std::size_t N, std::size_t... I>
			struct range_builder : public range_builder<MIN, N - 1, N - 1, I...> {
			};
		} //namespace implem

		template <std::size_t MIN, std::size_t MAX>
		using index_range = typename implem::range_builder<MIN, MAX>::type;
	} //namespace bt
} //namespace dk

#endif