???? ???? ??????? ????? ?????? ?????? ????? ??????? ?? ???? ???????. ?? ???? ????? ?????? ?? ??????? ?????????, ?????? ???? ??????? ????? ??? {?????? ???? ???? {???? ???????? . ???? ?????? ???? ????? ??????? ??????? . ????? ?????? ????? ????? ??????? {????? ?????? ??? ???? ??????? ????? ??? ?