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