diff --git a/doc/doc.gitkeep b/doc/doc.gitkeep
new file mode 100644
index 0000000..d28d40b
--- /dev/null
+++ b/doc/doc.gitkeep
@@ -0,0 +1 @@
+add
\ No newline at end of file
diff --git a/model/model.gitkeep b/model/model.gitkeep
new file mode 100644
index 0000000..d28d40b
--- /dev/null
+++ b/model/model.gitkeep
@@ -0,0 +1 @@
+add
\ No newline at end of file
diff --git a/other/other.gitkeep b/other/other.gitkeep
new file mode 100644
index 0000000..d28d40b
--- /dev/null
+++ b/other/other.gitkeep
@@ -0,0 +1 @@
+add
\ No newline at end of file