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