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