diff --git a/std-script/judge b/std-script/judge
--- a/std-script/judge
+++ b/std-script/judge
@@ -158,6 +158,8 @@
     # do nothing
   end
 
+
+  #copy the output of run script to each test-result folder
   call_and_log("Cannot create directory #{test_result_dir}/#{test_num}") {
     FileUtils.mkdir "#{test_result_dir}/#{test_num}"
   }