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