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