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