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