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