?????? ????? ?????? ????? ??? ???? ????????? ?????????? ?????? ???? ??? ???? ????? ???? ???????? ???????? ???? ? ?????? ??? ?????????? ??? ?? ???? ??? ?? ??? ?? ?????? ??? ??????? ????? ?? ? ????????? ??????? ???????? ??? ????? ?????? ??????: ?????????? ?????? ????? {??????? ?? ???? {???????????? ???? ??? ?? ?? ?????? {?????????? ????? ??