Merge pull request #324 from online-judge-tools/beet-aizu-patch-1

Update _cplusplus_list_defined_macros to speed up

Author: kmyk

onlinejudge_verify/languages/cplusplus.py

@@ -148,7 +148,7 @@ def list_attributes(self, path: pathlib.Path, *, basedir: pathlib.Path) -> Dict[
         if comments:
             attributes.update(comments)
 
-        else:
+        elif super().is_verification_file(path, basedir=basedir):
             # use old-style if special comments not found
             # #define PROBLEM "https://..." の形式は複数 environments との相性がよくない。あと遅い
             attributes[_NOT_SPECIAL_COMMENTS] = ''