[ABC071C] Make a Rectangle

[ABC071D] Coloring Dominoes

[ARC081E] Don't Be a Subsequence

有限状态自动机

[ARC081F] Flip and Rectangles

[ABC072C] Together

[ABC072D] Derangement

[ARC082E] ConvexScore

[ARC082F] Sandglass

线段树 · 排序

[ABC074C] Sugar Water

[ABC074D] Restoring Road Network

[ARC083E] Bichrome Tree

[ARC083F] Collecting Balls

[ABC077C] Snuke Festival

[ABC077D] Small Multiple

最短路

[ARC084E] Finite Encyclopedia of Integer Sequences

[ARC084F] XorShift

[ABC078C] HSI

[ABC078D] ABS

[ARC085E] MUL

[ARC085F] NRE

[ABC081C] Not so Diverse

排序

[ABC081D] Non-decreasing

[ARC086E] Smuggling Marbles

树形 DP · 树链剖分 · 虚树

[ARC086F] Shift and Decrement

[ABC082C] Good Sequence

[ABC082D] FT Robot

动态规划 DP

[ARC087E] Prefix-free Game

[ARC087F] Squirrel Migration

[ABC083C] Multiple Gift

模拟 · 枚举

[ABC083D] Wide Flip

[ARC088E] Papple Sort

贪心 · 线段树 · 树状数组

[ARC088F] Christmas Tree

[ABC086C] Traveling

[ABC086D] Checker

[ARC089E] GraphXY

[ARC089F] ColoringBalls

[ABC087C] Candies

[ABC087D] People on a Line

搜索 · 并查集 · 深度优先搜索 DFS · 差分约束 · 差分

[ARC090E] Avoiding Collision

最短路

[ARC090F] Number of Digits

[ABC090C] Flip,Flip, and Flip......

[ABC090D] Remainder Reminder

[ARC091E] LISDL

[ARC091F] Strange Nim

[ABC091C] 2D Plane 2N Points

[ABC091D] Two Sequences

[ARC092E] Both Sides Merger

[ARC092F] Two Faced Edges

广度优先搜索 BFS · 深度优先搜索 DFS · 强连通分量 · bitset

[ABC092C] Traveling Plan

[ABC092D] Grid Components