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