?????????????? ?????? ???? ?????? ?? ???????????????? ?????????? ??? ???????? ????? ??? ????????? ?????????? ?????? ?????? ???? ?? ??? ??? ???????? 10 ?? ??????? ??? ??????? ??? ??? ???????? 10 ??? ??????????? ??????? ?????? ?????? ??? ??? ??? 10 ????????? {?????????????????. {??????????? ??????? ????????? ???????? ????????? ?????? ?? ?