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Karina and Array

Bun Lover

Super-Permutation

数学 · 构造

Making Anti-Palindromes

Gardening Friends

Magic Triples (Hard Version)

Magic Triples (Easy Version)

A-characteristic

Sort with Step

Strongly Composite

Unique Palindromes

Removing Graph

Random Walk

LuoTianyi and the Show

LuoTianyi and the Floating Islands (Hard Version)

树论 · 排列组合

LuoTianyi and the Floating Islands (Easy Version)

树论 · 分类讨论

LuoTianyi and XOR-Tree

LuoTianyi and the Function

LuoTianyi and Cartridge

LuoTianyi and the Palindrome String

LuoTianyi and the Table

Trust Nobody

Lunatic Never Content

Dreaming of Freedom

Running Miles

Walk the Runway

动态规划 DP · bitset

Fading into Fog

Counting Orders

Range Sorting (Hard Version)

二分 · ST 表 · 单调栈

Range Sorting (Easy Version)

Palindrome Partition

字符串 · Manacher 算法

Two Centroids

树形数据结构 · 树论 · 树的重心

Bus Routes

点分治 · 深度优先搜索 DFS · 最近公共祖先 LCA · 树链剖分 · 虚树

Copium Permutation

Divisible Array

Permutation Swap

Love Story

Blank Space

Mr. Perfectly Fine

Gold Rush

The Lakes

Forever Winter

Hits Different

Don't Blame Me

Copil Copac Draws Trees

The BOSS Can Count Pairs

Hyperregular Bracket Strings

哈希 hashing · 组合数学 · Catalan 数

Mex Tree

Bully Sort

树状数组 · cdq 分治 · 树套树 · 可持久化线段树 · 分块 · 整体二分