???? ?????????????? ?????? ?? ????? ??? ??? ??? ?? ???????????? ??? ??? ?????????? ??? ?????? ??? ??????????.?? ?????????? ????? ??? ???????????? ????? ? ?????????????? ???????, ??? ?????? ?? ????????? ????????? ? ?? ????????? ??? ???????? ?????? ?? ???????? ?? ??????????? ???????? ??? ??????????????? ??? ??????????.This polling can be done by a sp