???? ???? ????? ??? ???? ???? ??? ???? ??????? ??? ???????? ?????????, ????? ??? ???? ????? ?????? ?????. ????? ???? ????? ?? ??? ?????? ? ????? ???? ?? ?????? ???????? ????? ????? ?????. ??? ???? ?? ???? ??? ???????, ???? ?????? ??optimum. ???? 33% ?? ??? ??????? ??? ???????? ??? ???????? ??? ?