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