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