??? ?? ?????? ??? ????? ??? ??? ?????? ??? ?????? ????????;???????????? ???????? promoting system ??? ???????? ???????? ??? ???????? ??? ??? ?? ??????? ???????????? ??????????? ??????? ??????????? ? ??????????????, ???? ??? ?????, ??? ??? ??? ??? ???????? ????????????? ???????? ?????????? ????????? ???????? ?????????? ???????? ??????? ??? ??? ?????