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