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| 1035 |[不相交的线](https://github.com/openset/leetcode/tree/master/problems/uncrossed-lines)|[[数组](https://github.com/openset/leetcode/tree/master/tag/array/README.md)]| Medium |
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| 1031 |[两个非重叠子数组的最大和](https://github.com/openset/leetcode/tree/master/problems/maximum-sum-of-two-non-overlapping-subarrays)|[[数组](https://github.com/openset/leetcode/tree/master/tag/array/README.md)]| Medium |
| 1014 |[最佳观光组合](https://github.com/openset/leetcode/tree/master/problems/best-sightseeing-pair)|[[数组](https://github.com/openset/leetcode/tree/master/tag/array/README.md)]| Medium |
| 357 |[计算各个位数不同的数字个数](https://github.com/openset/leetcode/tree/master/problems/count-numbers-with-unique-digits)|[[数学](https://github.com/openset/leetcode/tree/master/tag/math/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 351 |[安卓解锁模式](https://github.com/openset/leetcode/tree/master/problems/android-unlock-patterns) 🔒 |[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 351 |[安卓系统手势解锁](https://github.com/openset/leetcode/tree/master/problems/android-unlock-patterns) 🔒 |[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 320 |[Generalized Abbreviation](https://github.com/openset/leetcode/tree/master/problems/generalized-abbreviation) 🔒 |[[位运算](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 306 |[累加数](https://github.com/openset/leetcode/tree/master/problems/additive-number)|[[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 294 |[翻转游戏 II](https://github.com/openset/leetcode/tree/master/problems/flip-game-ii) 🔒 |[[极小化极大](https://github.com/openset/leetcode/tree/master/tag/minimax/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
| 327 |[区间和的个数](https://github.com/openset/leetcode/tree/master/problems/count-of-range-sum)|[[排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md)][[树状数组](https://github.com/openset/leetcode/tree/master/tag/binary-indexed-tree/README.md)][[线段树](https://github.com/openset/leetcode/tree/master/tag/segment-tree/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Hard |
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| 315 |[计算右侧小于当前元素的个数](https://github.com/openset/leetcode/tree/master/problems/count-of-smaller-numbers-after-self)|[[排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md)][[树状数组](https://github.com/openset/leetcode/tree/master/tag/binary-indexed-tree/README.md)][[线段树](https://github.com/openset/leetcode/tree/master/tag/segment-tree/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Hard |
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| 302 |[Smallest Rectangle Enclosing Black Pixels](https://github.com/openset/leetcode/tree/master/problems/smallest-rectangle-enclosing-black-pixels) 🔒 |[[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)]| Hard |
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| 302 |[包含黑色像素的最小矩形](https://github.com/openset/leetcode/tree/master/problems/smallest-rectangle-enclosing-black-pixels) 🔒 |[[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)]| Hard |
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| 300 |[最长上升子序列](https://github.com/openset/leetcode/tree/master/problems/longest-increasing-subsequence)|[[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Medium |
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| 287 |[寻找重复数](https://github.com/openset/leetcode/tree/master/problems/find-the-duplicate-number)|[[数组](https://github.com/openset/leetcode/tree/master/tag/array/README.md)][[双指针](https://github.com/openset/leetcode/tree/master/tag/two-pointers/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)]| Medium |
| 777 |[在LR字符串中交换相邻字符](https://github.com/openset/leetcode/tree/master/problems/swap-adjacent-in-lr-string)|[[脑筋急转弯](https://github.com/openset/leetcode/tree/master/tag/brainteaser/README.md)]| Medium |
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| 319 |[灯泡开关](https://github.com/openset/leetcode/tree/master/problems/bulb-switcher)|[[脑筋急转弯](https://github.com/openset/leetcode/tree/master/tag/brainteaser/README.md)][[数学](https://github.com/openset/leetcode/tree/master/tag/math/README.md)]| Medium |
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| 1036 |[逃离大迷宫](https://github.com/openset/leetcode/tree/master/problems/escape-a-large-maze)|[[广度优先搜索](https://github.com/openset/leetcode/tree/master/tag/breadth-first-search/README.md)]| Hard |
| 934 |[最短的桥](https://github.com/openset/leetcode/tree/master/problems/shortest-bridge)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)][[广度优先搜索](https://github.com/openset/leetcode/tree/master/tag/breadth-first-search/README.md)]| Medium |
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| 1034 |[边框着色](https://github.com/openset/leetcode/tree/master/problems/coloring-a-border)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 1028 |[从先序遍历还原二叉树](https://github.com/openset/leetcode/tree/master/problems/recover-a-tree-from-preorder-traversal)|[[树](https://github.com/openset/leetcode/tree/master/tag/tree/README.md)][[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Hard |
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| 1026 |[节点与其祖先之间的最大差值](https://github.com/openset/leetcode/tree/master/problems/maximum-difference-between-node-and-ancestor)|[[树](https://github.com/openset/leetcode/tree/master/tag/tree/README.md)][[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 1020 |[飞地的数量](https://github.com/openset/leetcode/tree/master/problems/number-of-enclaves)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 488 |[祖玛游戏](https://github.com/openset/leetcode/tree/master/problems/zuma-game)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Hard |
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| 473 |[火柴拼正方形](https://github.com/openset/leetcode/tree/master/problems/matchsticks-to-square)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 472 |[连接词](https://github.com/openset/leetcode/tree/master/problems/concatenated-words)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)][[字典树](https://github.com/openset/leetcode/tree/master/tag/trie/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Hard |
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| 439 |[Ternary Expression Parser](https://github.com/openset/leetcode/tree/master/problems/ternary-expression-parser) 🔒 |[[栈](https://github.com/openset/leetcode/tree/master/tag/stack/README.md)][[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 439 |[三元表达式解析器](https://github.com/openset/leetcode/tree/master/problems/ternary-expression-parser) 🔒 |[[栈](https://github.com/openset/leetcode/tree/master/tag/stack/README.md)][[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 430 |[扁平化多级双向链表](https://github.com/openset/leetcode/tree/master/problems/flatten-a-multilevel-doubly-linked-list)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)][[链表](https://github.com/openset/leetcode/tree/master/tag/linked-list/README.md)]| Medium |
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| 417 |[太平洋大西洋水流问题](https://github.com/openset/leetcode/tree/master/problems/pacific-atlantic-water-flow)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)][[广度优先搜索](https://github.com/openset/leetcode/tree/master/tag/breadth-first-search/README.md)]| Medium |
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| 394 |[字符串解码](https://github.com/openset/leetcode/tree/master/problems/decode-string)|[[栈](https://github.com/openset/leetcode/tree/master/tag/stack/README.md)][[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)]| Medium |
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| 903 |[DI 序列的有效排列](https://github.com/openset/leetcode/tree/master/problems/valid-permutations-for-di-sequence)|[[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Hard |
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| 514 |[自由之路](https://github.com/openset/leetcode/tree/master/problems/freedom-trail)|[[深度优先搜索](https://github.com/openset/leetcode/tree/master/tag/depth-first-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Hard |
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| 493 |[翻转对](https://github.com/openset/leetcode/tree/master/problems/reverse-pairs)|[[排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md)][[树状数组](https://github.com/openset/leetcode/tree/master/tag/binary-indexed-tree/README.md)][[线段树](https://github.com/openset/leetcode/tree/master/tag/segment-tree/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Hard |
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| 426 |[Convert Binary Search Tree to Sorted Doubly Linked List](https://github.com/openset/leetcode/tree/master/problems/convert-binary-search-tree-to-sorted-doubly-linked-list) 🔒 |[[树](https://github.com/openset/leetcode/tree/master/tag/tree/README.md)][[链表](https://github.com/openset/leetcode/tree/master/tag/linked-list/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Medium |
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| 426 |[将二叉搜索树转化为排序的双向链表](https://github.com/openset/leetcode/tree/master/problems/convert-binary-search-tree-to-sorted-doubly-linked-list) 🔒 |[[树](https://github.com/openset/leetcode/tree/master/tag/tree/README.md)][[链表](https://github.com/openset/leetcode/tree/master/tag/linked-list/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Medium |
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| 327 |[区间和的个数](https://github.com/openset/leetcode/tree/master/problems/count-of-range-sum)|[[排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md)][[树状数组](https://github.com/openset/leetcode/tree/master/tag/binary-indexed-tree/README.md)][[线段树](https://github.com/openset/leetcode/tree/master/tag/segment-tree/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Hard |
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| 315 |[计算右侧小于当前元素的个数](https://github.com/openset/leetcode/tree/master/problems/count-of-smaller-numbers-after-self)|[[排序](https://github.com/openset/leetcode/tree/master/tag/sort/README.md)][[树状数组](https://github.com/openset/leetcode/tree/master/tag/binary-indexed-tree/README.md)][[线段树](https://github.com/openset/leetcode/tree/master/tag/segment-tree/README.md)][[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)]| Hard |
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| 312 |[戳气球](https://github.com/openset/leetcode/tree/master/problems/burst-balloons)|[[分治算法](https://github.com/openset/leetcode/tree/master/tag/divide-and-conquer/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Hard |
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| 361 |[轰炸敌人](https://github.com/openset/leetcode/tree/master/problems/bomb-enemy) 🔒 |[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Medium |
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| 357 |[计算各个位数不同的数字个数](https://github.com/openset/leetcode/tree/master/problems/count-numbers-with-unique-digits)|[[数学](https://github.com/openset/leetcode/tree/master/tag/math/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 354 |[俄罗斯套娃信封问题](https://github.com/openset/leetcode/tree/master/problems/russian-doll-envelopes)|[[二分查找](https://github.com/openset/leetcode/tree/master/tag/binary-search/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Hard |
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| 351 |[安卓解锁模式](https://github.com/openset/leetcode/tree/master/problems/android-unlock-patterns) 🔒 |[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 351 |[安卓系统手势解锁](https://github.com/openset/leetcode/tree/master/problems/android-unlock-patterns) 🔒 |[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)][[回溯算法](https://github.com/openset/leetcode/tree/master/tag/backtracking/README.md)]| Medium |
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| 343 |[整数拆分](https://github.com/openset/leetcode/tree/master/problems/integer-break)|[[数学](https://github.com/openset/leetcode/tree/master/tag/math/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Medium |
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| 338 |[比特位计数](https://github.com/openset/leetcode/tree/master/problems/counting-bits)|[[位运算](https://github.com/openset/leetcode/tree/master/tag/bit-manipulation/README.md)][[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Medium |
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| 322 |[零钱兑换](https://github.com/openset/leetcode/tree/master/problems/coin-change)|[[动态规划](https://github.com/openset/leetcode/tree/master/tag/dynamic-programming/README.md)]| Medium |
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