diff --git a/arrays_and_strings/two_sums.py b/arrays_and_strings/two_sums.py
index 9f8b32f..ac133e5 100644
--- a/arrays_and_strings/two_sums.py
+++ b/arrays_and_strings/two_sums.py
@@ -1,3 +1,8 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+
 def two_sum(nums: list[int], target: int) -> list[int]:
         
   aux_dict = {}