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