Merge pull request #394 from kmyk/issue/391

#391: fix a bug of `AtCoderContest.list_problems()`

onlinejudge/service/atcoder.py

@@ -363,15 +363,16 @@ def __init__(self, contest_id: str, problem_id: str):
     @classmethod
     def _from_table_row(cls, tr: bs4.Tag) -> 'AtCoderProblem':
         tds = tr.find_all('td')
-        assert len(tds) == 5
+        assert 4 <= len(tds) <= 5
         path = tds[1].find('a')['href']
         self = cls.from_url('https://atcoder.jp' + path)
         assert self is not None
         self._alphabet = tds[0].text
         self._task_name = tds[1].text
         self._time_limit_msec = int(float(utils.remove_suffix(tds[2].text, ' sec')) * 1000)
         self._memory_limit_byte = int(utils.remove_suffix(tds[3].text, ' MB')) * 1000 * 1000  # TODO: confirm this is MB truly, not MiB
-        assert tds[4].text.strip() in ('', 'Submit')
+        if len(tds) == 5:
+            assert tds[4].text.strip() in ('', 'Submit', '提出')
         return self
 
     def download_sample_cases(self, session: Optional[requests.Session] = None) -> List[onlinejudge.type.TestCase]: