From 67271b18beac9511b01670364dab1683cd4ff3a8 Mon Sep 17 00:00:00 2001
From: zhangkun902 <38757772+zhangkun902@users.noreply.github.com>
Date: Sun, 27 Sep 2020 17:27:43 +0800
Subject: [PATCH 1/2] update byteDance/backend.md

---
 bytedance/backend.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bytedance/backend.md b/bytedance/backend.md
index 03d48b5..4f81aae 100644
--- a/bytedance/backend.md
+++ b/bytedance/backend.md
@@ -47,4 +47,4 @@
 | 字节跳动 | 后端 | 958\. 二叉树的完全性检验         | 2  |
 | 字节跳动 | 后端 | 69\. x 的平方根             | 2  |
 | 字节跳动 | 后端 | 114\. 二叉树展开为链表          | 2  |
-
+| 字节跳动 | 后端 | 200\. 岛屿数量          | 1  |

From 9468d92b2f44e3c9a7f5d44d4143a715e5ff4e4a Mon Sep 17 00:00:00 2001
From: zhangkun902 <38757772+zhangkun902@users.noreply.github.com>
Date: Sun, 27 Sep 2020 17:30:21 +0800
Subject: [PATCH 2/2] update yuFuDao/backend.md

---
 yuanfudao/backend.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/yuanfudao/backend.md b/yuanfudao/backend.md
index 810ee06..2826d82 100644
--- a/yuanfudao/backend.md
+++ b/yuanfudao/backend.md
@@ -37,4 +37,5 @@
 | 239\. 滑动窗口最大值            | 1  |
 | 208\. 实现 Trie \(前缀树\)    | 1  |
 | 99\. 恢复二叉搜索树             | 1  |
-| 83\. 删除排序链表中的重复元素        | 1  |
\ No newline at end of file
+| 83\. 删除排序链表中的重复元素        | 1  |
+| 301\. 删除无效的括号        | 1  |