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