?????????????? ???? ??????? ?????? ???????? ?????? ?????? ???????????? ?????? ??? ?????. ????? ?????? ??????? ?????????????. ??????? ?????? ?????? ????? ?????? ??????????? ????? ????????????? ??????????????? ????? ??? ?????????? ???????????? ??????????? ???? ?? ??? ??? ?????? ?????? {?? ?????? ??? ??? ????????? ?????? ???????? ??? ????