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