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