?????? ?????? ?? ???????? ???????? ?? ??????? ????? ??? ????? ???? ??????. ????? ??? ?????? ? ???? ??????? ?????? ?????? {?? ???? ????? ?detection ?????? ??????. ???? ??? ?????? : * ???????? ??????? ??????? ????????? * ??????? ??????? ?????? ???????? ????? ???????? ?????? ??? ?????? ?????? ???????. ??????? ????? ?? ??? ?????? ?????? ????? ?????