???? ??????? ??? ???? ?? ????, ??? ?????? ??? ?? ????? , ???? ??? ???? ???? . ????? ??? ??? ????? ?????? ??????. {??? | ????? | ???] ????, ????? ??? ????? ??? ???? ??????. ????? ????? ?????? ? ?? , ?????? ??? ?????? . ?? ????? , ???? ?? ????? ????? ????????: ???? ????? ?? ???