? ????? ????????? ????? ???? ??? ???????: 1. ????? ??????? ?????? ????? (??? ??????? ??????) 2. ????????? ???????? ????? ?? ????? 3. ????? ???????? ????? (?????????? ??? ??????????? ???????) ? ?????? ???????? ? ?????? (???????? ?? ??????? ?????, ? ?.?. ?????????, ????????? ???????? ?? 1/3 ???????)
?????????? ???. ???????? ??? ? ????? ????? ?????????? ????? ????????? ??? ??????? (???? ?? ??????? ? ??? ???????).
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