??????? ?????? ????? ??(??????????? ?????? ???? ?????? ??? ????? ????? ?? ??????. ? ?? ?????? ?????? ????? ????? . ???? ?????? ????? ???? ?????? 3) ???? ???? ????? ????? ? ???? ?????. ?????? ??? ???? ?????? ?? ????? ?????? ??????? ??? ?????? . ????? ????? ????? ?????? ???? ????? ?????? ???? ?????? ?? ???? ??? ??????? ??????? ?????