????? ?? ????? ?????????
??? ???? ????? ?????? ???? ?? ????? ??????? ????????? ?? ??? ????? ??????? ????? ????? ????????? ?????? ?? ?????.
???? ??? ???????? ??? ???? ??????? ?????? ??? ????? ????? ????? ??? 50% ????? ?? 75%.
????? ????? ?? ??? ??????? ???? ???? ????? ????? ??? ??? ??????? ????? ??? ??? ?????? ??????