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