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