Tokitsukaze and Strange Inequality

树状数组

Tokitsukaze and Meeting

Tokitsukaze and Two Colorful Tapes

贪心 · 并查集

Tokitsukaze and Permutations

Tokitsukaze and Beautiful Subsegments

Tokitsukaze and Gems

Tokitsukaze and All Zero Sequence

Tokitsukaze and Good 01-String (hard version)

动态规划 DP · 贪心

Tokitsukaze and Good 01-String (easy version)

贪心

AvtoBus

数学

Stone Age Problem

模拟 · 线段树

Rooks Defenders

线段树 · 树状数组

Toss a Coin to Your Graph...

二分 · 拓扑排序

Typical Party in Dorm

动态规划 DP

Formalism for Formalism

动态规划 DP · 状态合并

Minimums and Maximums

数学

Robots

模拟

Binary String

贪心 · 二分

Dog Walking

贪心

Moving Chips

动态规划 DP · 贪心

Lenient Vertex Cover

图论 · 二分图 · 差分

Game with Cards

Card Trick

模拟

Double Sort

枚举

Required Length

动态规划 DP · 枚举 · 广度优先搜索 BFS

Labyrinth Adventures

动态规划 DP · 图论 · 倍增 · 动态树分治

Unique Occurrences

深度优先搜索 DFS · 树形 DP

Palindromic Indices

贪心

AND Sorting

贪心 · 位运算

LIS or Reverse LIS?

数学 · 构造

Circular Spanning Tree

构造

Unordered Swaps

深度优先搜索 DFS

MCMF?

树状数组

Digit Minimization

模拟

Z mod X = C

数论 · 构造

Column Swapping

模拟

Traps

贪心 · 差分

MEX vs DIFF

贪心 · 构造

Diverse Segments

线段树 · 树状数组

Euclid Guess

网络流

Hard Cut

数学 · 分治

Circular Local MiniMax

构造

Linguistics

贪心

Bring Balance

Permutation Weight (Hard Version)

Permutation Weight (Easy Version)

The Ultimate LIS Problem

Everything Everywhere All But One

Odd Subarrays

The Enchanted Forest

数学 · 贪心