diff --git a/codes/rust/chapter_computational_complexity/time_complexity.rs b/codes/rust/chapter_computational_complexity/time_complexity.rs
index a6aa60b3..b18f19ad 100644
--- a/codes/rust/chapter_computational_complexity/time_complexity.rs
+++ b/codes/rust/chapter_computational_complexity/time_complexity.rs
@@ -1,4 +1,10 @@
-#![allow(unused_variables)]
+/**
+ * File: time_complexity.cpp
+ * Created Time: 2023-01-10
+ * Author: xBLACICEx (xBLACKICEx@outlook.com )
+ */
+
+#[allow(unused_variables)]
 
 /* 常数阶 */
 fn constant(n: i32) -> i32 {