diff --git a/math_logic_dp/climbing_stairs.py b/math_logic_dp/climbing_stairs.py
index 6a8a76c..30c2f18 100644
--- a/math_logic_dp/climbing_stairs.py
+++ b/math_logic_dp/climbing_stairs.py
@@ -1,3 +1,7 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
 '''
 You are climbing a staircase. It takes n steps to reach the top.
 Each time you can either climb 1 or 2 steps.