From a4e2623dbf73b5f606f75949b26529207c6e8be1 Mon Sep 17 00:00:00 2001
From: sangge-rockpi <2251250136@qq.com>
Date: Sat, 20 Jan 2024 13:48:01 +0800
Subject: [PATCH] update 20

---
 leetcode/20.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/leetcode/20.py b/leetcode/20.py
index 26da62c..e3c5727 100644
--- a/leetcode/20.py
+++ b/leetcode/20.py
@@ -16,6 +16,9 @@ class Solution:
             try:
                 if symbol_dict[stack_top] == i:
                     continue
+                else:
+                    stack.append(stack_top)
+
             except KeyError:
                 return False