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(1) ????? ????????????? ?? ????? ???? ?? ????? ?????? ??? 5 ? 10 ?? ??????? ??????? ????? ???? ????? ???? ?????? ???????? ???? ?????????.
(2) ????? ???????? ??????? ??????? ??? ?????? ????: (?) ? (?). ??????? ??????? ???? ???? ??? ?????? ??? ??? ?????? ????????? ??? ?? ??? ??????? ?????????? ?????????? ?????????? ?????? ?????? ? ??? ????? ??? ?? ?????? ?????? ?????? ?????? ?????? ????? ???? ?????? ???? ????? ???? ?????? ?? ??????? ??????? ??????? ?????? ????? ?????? ?????? ?? ???????? ??????? ??????? ????? ????? ????? ?????? ?????? ???????? ???????? ???????? ????????? ???????? ??????? ???.
3 -??????? ???????? ??????? ???? ???? ???? ????? ????????? ???????? ?? ?????? ????? ????? ???????? ???????? ??????? ??????? ?? ???? ??????? ?? ???? ????? ??????? ????? ?? ????????? ??? ???? ??????? ????? ??????? ??????.