question: determine if a reply code is a negative permanent response . all codes beginning with a 5 are negative permanent responses . the nntp server will send a negative permanent response when it does not implement a command , a command is incorrectly formatted , or a serious program error occurs . concode_field_sep int NO_PREVIOUS_ARTICLE concode_elem_sep int ARTICLE_NOT_WANTED concode_elem_sep int SEND_ARTICLE_TO_TRANSFER concode_elem_sep int POSTING_NOT_ALLOWED concode_elem_sep int GROUP_SELECTED concode_elem_sep int ARTICLE_TRANSFERRED_OK concode_elem_sep int HELP_TEXT_FOLLOWS concode_elem_sep int SLAVE_STATUS_NOTED concode_elem_sep int NO_NEWSGROUP_SELECTED concode_elem_sep int NO_NEXT_ARTICLE concode_elem_sep int AUTHENTICATION_REJECTED concode_elem_sep int SERVER_READY_POSTING_ALLOWED concode_elem_sep int SEND_ARTICLE_TO_POST concode_elem_sep int ARTICLE_RETRIEVED_HEAD_AND_BODY_FOLLOW concode_elem_sep int MORE_AUTH_INFO_REQUIRED concode_elem_sep int NO_SUCH_NEWSGROUP concode_elem_sep int PERMISSION_DENIED concode_elem_sep int ARTICLE_POSTED_OK concode_elem_sep int NO_CURRENT_ARTICLE_SELECTED concode_elem_sep int AUTHENTICATION_ACCEPTED concode_elem_sep int COMMAND_SYNTAX_ERROR concode_elem_sep int ARTICLE_RETRIEVED_REQUEST_TEXT_SEPARATELY concode_elem_sep int SERVICE_DISCONTINUED concode_elem_sep int PROGRAM_FAULT concode_elem_sep int ARTICLE_LIST_BY_MESSAGE_ID_FOLLOWS concode_elem_sep int COMMAND_NOT_RECOGNIZED concode_elem_sep int NEW_NEWSGROUP_LIST_FOLLOWS concode_elem_sep int NO_SUCH_ARTICLE_NUMBER concode_elem_sep int CLOSING_CONNECTION concode_elem_sep int DEBUG_OUTPUT concode_elem_sep int SERVER_READY_POSTING_NOT_ALLOWED concode_elem_sep int ARTICLE_RETRIEVED_BODY_FOLLOWS concode_elem_sep int NO_SUCH_ARTICLE_FOUND concode_elem_sep int ARTICLE_RETRIEVED_HEAD_FOLLOWS concode_elem_sep int ARTICLE_REJECTED concode_elem_sep int POSTING_FAILED concode_elem_sep int TRANSFER_FAILED concode_elem_sep int AUTHENTICATION_REQUIRED concode_field_sep boolean isInformational concode_elem_sep boolean isNegativeTransient concode_elem_sep boolean isPositiveIntermediate concode_elem_sep boolean isPositiveCompletion
target: boolean function ( int arg0 ) { return ( arg0 >= 500 && arg0 < 600 ) ; }