Drop output_prefix_override and use show_testcases

judge/models/contest.py

@@ -772,12 +772,9 @@ class ContestProblem(models.Model):
     partial = models.BooleanField(default=True, verbose_name=_("partial"))
     is_pretested = models.BooleanField(default=False, verbose_name=_("is pretested"))
     order = models.PositiveIntegerField(db_index=True, verbose_name=_("order"))
-    output_prefix_override = models.IntegerField(
-        help_text=_("0 to not show testcases, 1 to show"),
+    show_testcases = models.BooleanField(
         verbose_name=_("visible testcases"),
-        null=True,
-        blank=True,
-        default=0,
+        default=False,
     )
     max_submissions = models.IntegerField(
         help_text=_(

judge/models/profile.py

@@ -109,6 +109,13 @@ class Organization(models.Model):
                 "Organization membership test must be Profile or primany key"
             )
 
+    def delete(self, *args, **kwargs):
+        contests = self.contest_set
+        for contest in contests.all():
+            if contest.organizations.count() == 1:
+                contest.delete()
+        super().delete(*args, **kwargs)
+
     def __str__(self):
         return self.name