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