diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -48,7 +48,7 @@
                 break
     else:
         if rets[q_array[i]] == -1:
-            print(-1, i, now, q_array, q_array[i], rets[q_array[i]])
+            print(-1)
             exit()
         rets[q_array[i]] = 1
     done[q_array[i]] = True
