???? ??? ?????? ??? ?????? ?????? ??? ??????? ????, ???? ?????? ????? ??????? ???????? ????????.?????? ????: ???? ??????? ??? ????????? ???? ???? ???????? ????? ???? ???? ????? ??????? ????????.??? ???? ????? ??????? ????? ??? ?? ??? ????? ??????? ????????? ???? ??? ??? ???? ?? ?????? ??? ??????? ???? ?????? ?? ?????????.Monitoring via statistics i