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