???? ?????? ????? ???????? ????? ???? ???? ??? ?????, ???? ?? ????? ?? ??? ???? ????. ??? ??? ????? ???? ?? ??? ???? ?? ??? ????? ??? ????? ???. ??? 1: ??? ??? ??? ?????? ??? ? ???? ????? ????? ????? ???. ??? 2: ??? ??? ??? ? {??????? ??????? ?? ????, ?? ???? ???? ???? ???? ??? ???? ????? ???. ??? 3: ??? ??? ??? ???? ???? ? ???? ??