diff --git a/2d/b4/ab80a2653b14e5b41cc75a26669cf165f7ec b/2d/b4/ab80a2653b14e5b41cc75a26669cf165f7ec
new file mode 100644
index 00000000000..b9a12a50b17
--- /dev/null
+++ b/2d/b4/ab80a2653b14e5b41cc75a26669cf165f7ec
@@ -0,0 +1 @@
+Author: https://github.com/alimpfard