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