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