diff --git a/std-script/judge b/std-script/judge
--- a/std-script/judge
+++ b/std-script/judge
@@ -103,6 +103,10 @@
 
 # Doing the testing.
 (1..(problem.num_tests)).each do |test_num|
+
+  $stdout.print "[#{test_num}]"
+  $stdout.flush
+
   log "Test number: #{test_num}"
   execute("cp #{test_result_dir}/a.out #{sandbox_dir}", "Cannot copy the compiled program into #{sandbox_dir}")
   begin
@@ -117,6 +121,8 @@
   execute("rm -Rf #{sandbox_dir}/*", "Cannot clear #{sandbox_dir}")
 end
 
+$stdout.print "[done]\n"
+
 # Grade
 log
 log "Grading..."