diff --git a/00-chartgpt/chainlit/test_app.py b/00-chartgpt/chainlit/test_app.py
index 72f2d18d263f7d8bf22ed848f6c6bc411e979a8e..1b309d8a8cc0797404a03585569818a00e7c8196 100644
--- a/00-chartgpt/chainlit/test_app.py
+++ b/00-chartgpt/chainlit/test_app.py
@@ -1,9 +1,8 @@
 import openai
 import chainlit as cl
 
-openai.proxy = 'http://127.0.0.1:7890'
+openai.proxy = 'http://127.0.0.1:8088'
 openai.api_key = "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"
-# model_name = "text-davinci-003"
 model_name = "gpt-3.5-turbo"
 settings = {
     "temperature": 0.7,
diff --git "a/14_\345\210\267\351\242\230/day03/problem_solving_21.py" "b/14_\345\210\267\351\242\230/day03/problem_solving_21.py"
new file mode 100644
index 0000000000000000000000000000000000000000..189cc0422c4dfb3c0fd9a349d00ffd3d9a604f2b
--- /dev/null
+++ "b/14_\345\210\267\351\242\230/day03/problem_solving_21.py"
@@ -0,0 +1,22 @@
+"""
+第三大的数
+"""
+from typing import List
+
+
+class Solution:
+    def thirdMax(self, nums: List[int]) -> int:
+        if not nums:
+            return None
+        if len(nums) < 3:
+            return max(nums)
+        nums = sorted(set(nums), reverse=True)
+        if len(nums) >= 3:
+            return nums[2]
+        else:
+            return max(nums)
+
+
+if __name__ == '__main__':
+    result = Solution().thirdMax([3, 2, 1])
+    print(result)