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