Paths on a Grid

You Delete, I Delete

贪心

Merge to Match

贪心

Maximize the Score

动态规划 DP · 贪心

Good Pair Queries

贪心 · 前缀和

Excuse for Breaks

Matrix Elimination

No Balance Left

动态规划 DP · 数学 · 状压 DP · bitset

Rank Subsequence

模拟 · 枚举

Permutation Cuts

模拟 · 数学 · 组合数学

Double-Rift Dial

线段树 · 扫描线

Xor Permutation Matrix

数学 · 进制 · 构造

String (Hard Version)

String (Easy Version)

字符串 · 分治

Even Simple Path

一般图的最大匹配

Threshold Movement

数学 · 枚举

String Construction

字符串 · 数学 · 构造

Boss Fight

Always Changing

Risky Tower

贪心 · STL

Array Replacement

贪心 · 差分

Generational Triplets

Spectral Components

贪心 · 树论 · 虚树 · 树的重心

The Best Card

Hypercarp and the Control Panel

模拟 · 枚举

Sum of Distinct Values in a Matrix

Hypercarp and Interdimensional Jumps

数学 · 贪心 · 二分

Diameter Intersections

4-beauty

Riptide

Evanescent

字符串

Marenol (hard version)

Marenol (easy version)

Silhouette

排序 · 构造

Chronostasis

Whiplash

位运算

Nightcrawler

Hot Potatoes at the Fairy Warehouse

贪心 · 博弈论

A Ribbon for Tomorrow

Even If the World Turns

How Long Until Nothing Remains?

贪心 · 二分

What Will Remain at the End? (Hard Version)

What Will Remain at the End? (Easy Version)

Who Will Witness the End?

Three Numbers on the Blackboard

Domino Tiles

Creating Abbreviations

Gigantomachy

模拟

Spying on the Beaver

Bermuda Rectangle