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