--- a/cws/disclaimer.sty	Wed Nov 07 12:08:01 2018 +0000
+++ b/cws/disclaimer.sty	Thu Nov 08 23:42:03 2018 +0000
@@ -12,6 +12,10 @@
   functions or to any types. You are free to implement any auxiliary
   function you might need.
 
+\item Do not leave any test cases running in your code because this might slow
+  down your program! Comment test cases out before submission, otherwise you
+  might hit a time-out.
+
 \item Do not use any mutable data structures in your
 submissions! They are not needed. This means you cannot create new 
 \texttt{Array}s or \texttt{ListBuffer}s, for example.