add class pk

oj/settings.py

@@ -60,6 +60,7 @@ LOCAL_APPS = [
     "ai",
     "flowchart",
     "problemset",
+    "class_pk",
 ]
 
 INSTALLED_APPS = VENDOR_APPS + LOCAL_APPS

oj/urls.py

@@ -23,4 +23,5 @@ urlpatterns = [
     path("api/", include("flowchart.urls.oj")),
     path("api/", include("problemset.urls.oj")),
     path("api/admin/", include("problemset.urls.admin")),
+    path("api/", include("class_pk.urls.oj")),
 ]