?????? ???????? ??????? ?????? ??????? ?????? ?? ?????? {??????.???? ????? {???????{ ?? ??????? ? ???????? ????? ?????? ??? ???? ?????? ?????? ???? ?????? ?????? ????? ??? ??? ?????? ??????? ??? ?? ???? ????????. ???? ??? ???????: * ????? ??? 18 ????. * ??????? ??? ????? ???? ???? ????. * ????? ??????? ???????. ????????? ???????? ?????? ??? ?