diff --git a/du1/Makefile b/du1/Makefile
deleted file mode 100644
index 8b13789..0000000
--- a/du1/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/du1/Makefile.c b/du1/Makefile.c
deleted file mode 100644
index e69de29..0000000
diff --git a/du1/add.c b/du1/add.c
deleted file mode 100644
index b478595..0000000
--- a/du1/add.c
+++ /dev/null
@@ -1 +0,0 @@
-s
diff --git a/du1/program b/du1/program
index acc2392..9ff1636 100755
Binary files a/du1/program and b/du1/program differ