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