diff --git a/a4/dec92ed0f39dfa43ed1249207793c4b5a5f99e b/a4/dec92ed0f39dfa43ed1249207793c4b5a5f99e
new file mode 100644
index 00000000000..75cf64c8194
--- /dev/null
+++ b/a4/dec92ed0f39dfa43ed1249207793c4b5a5f99e
@@ -0,0 +1 @@
+Author: https://github.com/nico