diff --git a/leetcode/1.py b/leetcode/1.py
index f05e669..f3865de 100644
--- a/leetcode/1.py
+++ b/leetcode/1.py
@@ -13,9 +13,11 @@ class Solution:
                 if nums[i] == another:
                     temp_list = nums
                     temp_list.pop(i)
-                    if another not in temp_list:
+                    if another in temp_list:
                         answer.append(i)
                         answer.append(temp_list.index(another) + 1)
+                    elif another not in temp_list:
+                        continue
                 answer.append(i)
                 answer.append(nums.index(another))
                 return answer