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