???????? ?????????? ???? ????? ????? ??? ????? ?????? ??? ??? ????? ??????? ???? ??? ???? ?? ??????? ???????. ??? ?? ??? ???? 20 ???? ? ????? ??? ????? ?????? ??????? ? ?????? ??? ?????????? . ????1 ????4 ????9 ???? ???? ???? ??? ???? ???? ????? ?? ???? ?? ????? ?????? ????????? ??? ?????? ???? ????? ??? ?????? ?????? ???????. ????? ????