增加比赛的判题

submission/migrations/0005_submission_contest_id.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submission', '0004_remove_submission_is_counted'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='submission',
+            name='contest_id',
+            field=models.IntegerField(null=True, blank=True),
+        ),
+    ]