更改题解列表

Hurrivain · Mar 4, 2022 · 534fe29 · 534fe29
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diff --git a/Assets/Origins/Categories-List.md b/Assets/Origins/Categories-List.md
@@ -164,7 +164,21 @@
 
 ### [线段树题目](../../Contents/07.Tree/03.Segment-Tree/02.Segment-Tree-List.md)
 
-###### 0303. 区域和检索 - 数组不可变、0307. 区域和检索 - 数组可修改、1109. 航班预订统计、1893. 检查是否区域内所有整数都被覆盖、0354. 俄罗斯套娃信封问题、0673. 最长递增子序列的个数、1310. 子数组异或查询、1893. 检查是否区域内所有整数都被覆盖
+#### 单点更新题目
+
+###### 0303. 区域和检索 - 数组不可变、0307. 区域和检索 - 数组可修改、0354. 俄罗斯套娃信封问题、1310. 子数组异或查询
+
+#### 区间更新题目
+
+###### 0370. 区间加法、1109. 航班预订统计、0673. 最长递增子序列的个数、1851. 包含每个查询的最小区间
+
+#### 区间合并题目
+
+###### 729. 我的日程安排表 I、731. 我的日程安排表 II
+
+#### 扫描线问题
+
+###### 0218. 天际线问题、0391. 完美矩形、0850. 矩形面积 II
 
 ### [树状数组题目](../../Contents/07.Tree/04.Binary-Indexed-Tree/02.Binary-Indexed-Tree-List.md)
 

diff --git a/Contents/00.Introduction/04.Solutions-List.md b/Contents/00.Introduction/04.Solutions-List.md
@@ -1,4 +1,4 @@
-# LeetCode 题解（已完成 671 道）
+# LeetCode 题解（已完成 675 道）
 
 | 题号 | 标题 | 题解 | 标签 | 难度 |
 | :------ | :------ | :------ | :------ | :------ |
@@ -202,7 +202,9 @@
 | 0295 | [数据流的中位数](https://leetcode-cn.com/problems/find-median-from-data-stream/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0295.%20%E6%95%B0%E6%8D%AE%E6%B5%81%E7%9A%84%E4%B8%AD%E4%BD%8D%E6%95%B0.md) | 设计、双指针、数据流、排序、堆（优先队列） | 困难 |
 | 0297 | [二叉树的序列化与反序列化](https://leetcode-cn.com/problems/serialize-and-deserialize-binary-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0297.%20%E4%BA%8C%E5%8F%89%E6%A0%91%E7%9A%84%E5%BA%8F%E5%88%97%E5%8C%96%E4%B8%8E%E5%8F%8D%E5%BA%8F%E5%88%97%E5%8C%96.md) | 树、设计 | 困难 |
 | 0300 | [最长递增子序列](https://leetcode-cn.com/problems/longest-increasing-subsequence/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0300.%20%E6%9C%80%E9%95%BF%E9%80%92%E5%A2%9E%E5%AD%90%E5%BA%8F%E5%88%97.md) | 二分查找、动态规划 | 中等 |
+| 0303 | [区域和检索 - 数组不可变](https://leetcode-cn.com/problems/range-sum-query-immutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0303.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E4%B8%8D%E5%8F%AF%E5%8F%98.md) | 设计、数组、前缀和 | 简单 |
 | 0304 | [二维区域和检索 - 矩阵不可变](https://leetcode-cn.com/problems/range-sum-query-2d-immutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0304.%20%E4%BA%8C%E7%BB%B4%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E7%9F%A9%E9%98%B5%E4%B8%8D%E5%8F%AF%E5%8F%98.md) | 设计、数组、矩阵、前缀和 | 中等 |
+| 0307 | [区域和检索 - 数组可修改](https://leetcode-cn.com/problems/range-sum-query-mutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0307.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E5%8F%AF%E4%BF%AE%E6%94%B9.md) | 设计、树状数组、线段树、数组 | 中等 |
 | 0309 | [最佳买卖股票时机含冷冻期](https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-with-cooldown/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0309.%20%E6%9C%80%E4%BD%B3%E4%B9%B0%E5%8D%96%E8%82%A1%E7%A5%A8%E6%97%B6%E6%9C%BA%E5%90%AB%E5%86%B7%E5%86%BB%E6%9C%9F.md) | 数组、动态规划 | 中等 |
 | 0315 | [计算右侧小于当前元素的个数](https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0315.%20%E8%AE%A1%E7%AE%97%E5%8F%B3%E4%BE%A7%E5%B0%8F%E4%BA%8E%E5%BD%93%E5%89%8D%E5%85%83%E7%B4%A0%E7%9A%84%E4%B8%AA%E6%95%B0.md) | 树状数组、线段树、数组、二分查找、分治、有序集合、归并排序 | 困难 |
 | 0316 | [去除重复字母](https://leetcode-cn.com/problems/remove-duplicate-letters/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0316.%20%E5%8E%BB%E9%99%A4%E9%87%8D%E5%A4%8D%E5%AD%97%E6%AF%8D.md) | 栈、贪心、字符串、单调栈 | 中等 |
@@ -231,6 +233,7 @@
 | 0359 | [日志速率限制器](https://leetcode-cn.com/problems/logger-rate-limiter/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0359.%20%E6%97%A5%E5%BF%97%E9%80%9F%E7%8E%87%E9%99%90%E5%88%B6%E5%99%A8.md) | 设计、哈希表 | 简单 |
 | 0360 | [有序转化数组](https://leetcode-cn.com/problems/sort-transformed-array/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0360.%20%E6%9C%89%E5%BA%8F%E8%BD%AC%E5%8C%96%E6%95%B0%E7%BB%84.md) | 数组、数学、双指针、排序 | 中等 |
 | 0367 | [有效的完全平方数](https://leetcode-cn.com/problems/valid-perfect-square/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0367.%20%E6%9C%89%E6%95%88%E7%9A%84%E5%AE%8C%E5%85%A8%E5%B9%B3%E6%96%B9%E6%95%B0.md) | 数学、二分查找 | 简单 |
+| 0370 | [区间加法](https://leetcode-cn.com/problems/range-addition/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0370.%20%E5%8C%BA%E9%97%B4%E5%8A%A0%E6%B3%95.md) | 数组、前缀和 | 中等 |
 | 0371 | [两整数之和](https://leetcode-cn.com/problems/sum-of-two-integers/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0371.%20%E4%B8%A4%E6%95%B4%E6%95%B0%E4%B9%8B%E5%92%8C.md) | 位运算 | 中等 |
 | 0374 | [猜数字大小](https://leetcode-cn.com/problems/guess-number-higher-or-lower/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0374.%20%E7%8C%9C%E6%95%B0%E5%AD%97%E5%A4%A7%E5%B0%8F.md) | 二分查找 | 简单 |
 | 0376 | [摆动序列](https://leetcode-cn.com/problems/wiggle-subsequence/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0376.%20%E6%91%86%E5%8A%A8%E5%BA%8F%E5%88%97.md) | 贪心、数组、动态规划 | 中等 |
@@ -336,7 +339,7 @@
 | 0686 | [重复叠加字符串匹配](https://leetcode-cn.com/problems/repeated-string-match/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0686.%20%E9%87%8D%E5%A4%8D%E5%8F%A0%E5%8A%A0%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%8C%B9%E9%85%8D.md) | 字符串、字符串匹配 | 中等 |
 | 0690 | [员工的重要性](https://leetcode-cn.com/problems/employee-importance/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0690.%20%E5%91%98%E5%B7%A5%E7%9A%84%E9%87%8D%E8%A6%81%E6%80%A7.md) | 深度优先搜索、广度优先搜索、哈希表 | 简单 |
 | 0695 | [岛屿的最大面积](https://leetcode-cn.com/problems/max-area-of-island/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0695.%20%E5%B2%9B%E5%B1%BF%E7%9A%84%E6%9C%80%E5%A4%A7%E9%9D%A2%E7%A7%AF.md) | 搜索 | 中等 |
-| 0700 | [二叉搜索树中的搜索](https://leetcode-cn.com/problems/search-in-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0700.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%90%9C%E7%B4%A2.md) | 数 | 简单 |
+| 0700 | [二叉搜索树中的搜索](https://leetcode-cn.com/problems/search-in-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0700.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%90%9C%E7%B4%A2.md) | 树 | 简单 |
 | 0701 | [二叉搜索树中的插入操作](https://leetcode-cn.com/problems/insert-into-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0701.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%8F%92%E5%85%A5%E6%93%8D%E4%BD%9C.md) | 树 | 中等 |
 | 0702 | [搜索长度未知的有序数组](https://leetcode-cn.com/problems/search-in-a-sorted-array-of-unknown-size/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0702.%20%E6%90%9C%E7%B4%A2%E9%95%BF%E5%BA%A6%E6%9C%AA%E7%9F%A5%E7%9A%84%E6%9C%89%E5%BA%8F%E6%95%B0%E7%BB%84.md) | 二分查找 | 中等 |
 | 0703 | [数据流中的第 K 大元素](https://leetcode-cn.com/problems/kth-largest-element-in-a-stream/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0703.%20%E6%95%B0%E6%8D%AE%E6%B5%81%E4%B8%AD%E7%9A%84%E7%AC%AC%20K%20%E5%A4%A7%E5%85%83%E7%B4%A0.md) | 树、设计、二叉搜索树、二叉树、数据流、堆（优先队列） | 简单 |
@@ -347,6 +350,7 @@
 | 0708 | [循环有序列表的插入](https://leetcode-cn.com/problems/insert-into-a-sorted-circular-linked-list/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0708.%20%E5%BE%AA%E7%8E%AF%E6%9C%89%E5%BA%8F%E5%88%97%E8%A1%A8%E7%9A%84%E6%8F%92%E5%85%A5.md) | 链表 | 中等 |
 | 0713 | [乘积小于K的子数组](https://leetcode-cn.com/problems/subarray-product-less-than-k/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0713.%20%E4%B9%98%E7%A7%AF%E5%B0%8F%E4%BA%8EK%E7%9A%84%E5%AD%90%E6%95%B0%E7%BB%84.md) | 数组、滑动窗口 | 中等 |
 | 0714 | [买卖股票的最佳时机含手续费](https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0714.%20%E4%B9%B0%E5%8D%96%E8%82%A1%E7%A5%A8%E7%9A%84%E6%9C%80%E4%BD%B3%E6%97%B6%E6%9C%BA%E5%90%AB%E6%89%8B%E7%BB%AD%E8%B4%B9.md) | 贪心、数组、动态规划 | 中等 |
+| 0715 | [Range 模块](https://leetcode-cn.com/problems/range-module/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0715.%20Range%20%E6%A8%A1%E5%9D%97.md) | 设计、线段树、有序集合 | 困难 |
 | 0718 | [最长重复子数组](https://leetcode-cn.com/problems/maximum-length-of-repeated-subarray/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0718.%20%E6%9C%80%E9%95%BF%E9%87%8D%E5%A4%8D%E5%AD%90%E6%95%B0%E7%BB%84.md) | 数组、二分查找、动态规划、滑动窗口、哈希函数、滚动哈希 | 中等 |
 | 0719 | [找出第 k 小的距离对](https://leetcode-cn.com/problems/find-k-th-smallest-pair-distance/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0719.%20%E6%89%BE%E5%87%BA%E7%AC%AC%20k%20%E5%B0%8F%E7%9A%84%E8%B7%9D%E7%A6%BB%E5%AF%B9.md) | 堆、数组、二分查找 | 困难 |
 | 0720 | [词典中最长的单词](https://leetcode-cn.com/problems/longest-word-in-dictionary/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0720.%20%E8%AF%8D%E5%85%B8%E4%B8%AD%E6%9C%80%E9%95%BF%E7%9A%84%E5%8D%95%E8%AF%8D.md) | 字典树、数组、哈希表、字符串、排序 | 简单 |

diff --git a/Contents/00.Introduction/05.Categories-List.md b/Contents/00.Introduction/05.Categories-List.md
@@ -448,7 +448,7 @@
 | :------ | :------ | :------ | :------ | :------ |
 | 0098 | [验证二叉搜索树](https://leetcode-cn.com/problems/validate-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0098.%20%E9%AA%8C%E8%AF%81%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91.md) | 树、深度优先搜索、递归 | 中等 |
 | 0173 | [二叉搜索树迭代器](https://leetcode-cn.com/problems/binary-search-tree-iterator/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0173.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E8%BF%AD%E4%BB%A3%E5%99%A8.md) | 栈、树、设计 | 中等 |
-| 0700 | [二叉搜索树中的搜索](https://leetcode-cn.com/problems/search-in-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0700.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%90%9C%E7%B4%A2.md) | 数 | 简单 |
+| 0700 | [二叉搜索树中的搜索](https://leetcode-cn.com/problems/search-in-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0700.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%90%9C%E7%B4%A2.md) | 树 | 简单 |
 | 0701 | [二叉搜索树中的插入操作](https://leetcode-cn.com/problems/insert-into-a-binary-search-tree/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0701.%20%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E6%8F%92%E5%85%A5%E6%93%8D%E4%BD%9C.md) | 树 | 中等 |
 | 0450 | [删除二叉搜索树中的节点](https://leetcode-cn.com/problems/delete-node-in-a-bst/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0450.%20%E5%88%A0%E9%99%A4%E4%BA%8C%E5%8F%89%E6%90%9C%E7%B4%A2%E6%A0%91%E4%B8%AD%E7%9A%84%E8%8A%82%E7%82%B9.md) | 树 | 中等 |
 | 0703 | [数据流中的第 K 大元素](https://leetcode-cn.com/problems/kth-largest-element-in-a-stream/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0703.%20%E6%95%B0%E6%8D%AE%E6%B5%81%E4%B8%AD%E7%9A%84%E7%AC%AC%20K%20%E5%A4%A7%E5%85%83%E7%B4%A0.md) | 树、设计、二叉搜索树、二叉树、数据流、堆（优先队列） | 简单 |
@@ -458,23 +458,45 @@
 
 ### 线段树题目
 
+#### 单点更新题目
+
 | 题号 | 标题 | 题解 | 标签 | 难度 |
 | :------ | :------ | :------ | :------ | :------ |
-| 0303 | 区域和检索 - 数组不可变 |   |   |   |
-| 0307 | 区域和检索 - 数组可修改 |   |   |   |
-| 1109 | 航班预订统计 |   |   |   |
-| 1893 | 检查是否区域内所有整数都被覆盖 |   |   |   |
+| 0303 | [区域和检索 - 数组不可变](https://leetcode-cn.com/problems/range-sum-query-immutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0303.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E4%B8%8D%E5%8F%AF%E5%8F%98.md) | 设计、数组、前缀和 | 简单 |
+| 0307 | [区域和检索 - 数组可修改](https://leetcode-cn.com/problems/range-sum-query-mutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0307.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E5%8F%AF%E4%BF%AE%E6%94%B9.md) | 设计、树状数组、线段树、数组 | 中等 |
 | 0354 | [俄罗斯套娃信封问题](https://leetcode-cn.com/problems/russian-doll-envelopes/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0354.%20%E4%BF%84%E7%BD%97%E6%96%AF%E5%A5%97%E5%A8%83%E4%BF%A1%E5%B0%81%E9%97%AE%E9%A2%98.md) | 动态规划、二分查找 | 困难 |
-| 0673 | [最长递增子序列的个数](https://leetcode-cn.com/problems/number-of-longest-increasing-subsequence/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0673.%20%E6%9C%80%E9%95%BF%E9%80%92%E5%A2%9E%E5%AD%90%E5%BA%8F%E5%88%97%E7%9A%84%E4%B8%AA%E6%95%B0.md) | 动态规划 | 中等 |
 | 1310 | 子数组异或查询 |   |   |   |
-| 1893 | 检查是否区域内所有整数都被覆盖 |   |   |   |
+
+#### 区间更新题目
+
+| 题号 | 标题 | 题解 | 标签 | 难度 |
+| :------ | :------ | :------ | :------ | :------ |
+| 0370 | [区间加法](https://leetcode-cn.com/problems/range-addition/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0370.%20%E5%8C%BA%E9%97%B4%E5%8A%A0%E6%B3%95.md) | 数组、前缀和 | 中等 |
+| 1109 | 航班预订统计 |   |   |   |
+| 0673 | [最长递增子序列的个数](https://leetcode-cn.com/problems/number-of-longest-increasing-subsequence/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0673.%20%E6%9C%80%E9%95%BF%E9%80%92%E5%A2%9E%E5%AD%90%E5%BA%8F%E5%88%97%E7%9A%84%E4%B8%AA%E6%95%B0.md) | 动态规划 | 中等 |
+| 1851 | 包含每个查询的最小区间 |   |   |   |
+
+#### 区间合并题目
+
+| 题号 | 标题 | 题解 | 标签 | 难度 |
+| :------ | :------ | :------ | :------ | :------ |
+| 729 | 我的日程安排表 I |   |   |   |
+| 731 | 我的日程安排表 II |   |   |   |
+
+#### 扫描线问题
+
+| 题号 | 标题 | 题解 | 标签 | 难度 |
+| :------ | :------ | :------ | :------ | :------ |
+| 0218 | [天际线问题](https://leetcode-cn.com/problems/the-skyline-problem/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0218.%20%E5%A4%A9%E9%99%85%E7%BA%BF%E9%97%AE%E9%A2%98.md) |  树状数组、线段树、数组、分治、有序集合、扫描线、堆（优先队列） | 困难 |
+| 0391 | 完美矩形 |   |   |   |
+| 0850 | 矩形面积 II |   |   |   |
 
 ### 树状数组题目
 
 | 题号 | 标题 | 题解 | 标签 | 难度 |
 | :------ | :------ | :------ | :------ | :------ |
-| 0303 | 区域和检索 - 数组不可变 |   |   |   |
-| 0307 | 区域和检索 - 数组可修改 |   |   |   |
+| 0303 | [区域和检索 - 数组不可变](https://leetcode-cn.com/problems/range-sum-query-immutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0303.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E4%B8%8D%E5%8F%AF%E5%8F%98.md) | 设计、数组、前缀和 | 简单 |
+| 0307 | [区域和检索 - 数组可修改](https://leetcode-cn.com/problems/range-sum-query-mutable/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0307.%20%E5%8C%BA%E5%9F%9F%E5%92%8C%E6%A3%80%E7%B4%A2%20-%20%E6%95%B0%E7%BB%84%E5%8F%AF%E4%BF%AE%E6%94%B9.md) | 设计、树状数组、线段树、数组 | 中等 |
 | 0315 | [计算右侧小于当前元素的个数](https://leetcode-cn.com/problems/count-of-smaller-numbers-after-self/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0315.%20%E8%AE%A1%E7%AE%97%E5%8F%B3%E4%BE%A7%E5%B0%8F%E4%BA%8E%E5%BD%93%E5%89%8D%E5%85%83%E7%B4%A0%E7%9A%84%E4%B8%AA%E6%95%B0.md) | 树状数组、线段树、数组、二分查找、分治、有序集合、归并排序 | 困难 |
 | 0354 | [俄罗斯套娃信封问题](https://leetcode-cn.com/problems/russian-doll-envelopes/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0354.%20%E4%BF%84%E7%BD%97%E6%96%AF%E5%A5%97%E5%A8%83%E4%BF%A1%E5%B0%81%E9%97%AE%E9%A2%98.md) | 动态规划、二分查找 | 困难 |
 | 0673 | [最长递增子序列的个数](https://leetcode-cn.com/problems/number-of-longest-increasing-subsequence/) | [Python](https://github.com/itcharge/LeetCode-Py/blob/main/Solutions/0673.%20%E6%9C%80%E9%95%BF%E9%80%92%E5%A2%9E%E5%AD%90%E5%BA%8F%E5%88%97%E7%9A%84%E4%B8%AA%E6%95%B0.md) | 动态规划 | 中等 |