[ABC242B] Minimize Ordering

[ABC242C] 1111gal password

[ABC242D] ABC Transform

递归

[ABC242E] (∀x∀)

[ABC242F] Black and White Rooks

[ABC242G] Range Pairing Query

莫队

[ABC242Ex] Random Painting

[ABC243A] Shampoo

[ABC243B] Hit and Blow

[ABC243C] Collision 2

[ABC243D] Moves on Binary Tree

[ABC243E] Edge Deletion

最短路 · Floyd 算法

[ABC243F] Lottery

[ABC243G] Sqrt

动态规划 DP · 动态规划优化

[ABC243Ex] Builder Takahashi (Enhanced version)

[ABC244A] Last Letter

[ABC244B] Go Straight and Turn Right

[ABC244C] Yamanote Line Game

[ABC244D] Swap Hats

[ABC244E] King Bombee

[ABC244F] Shortest Good Path

[ABC244G] Construct Good Path

[ABC244Ex] Linear Maximization

线段树 · 李超线段树

[ABC245A] Good morning

[ABC245B] Mex

[ABC245C] Choose Elements

[ABC245D] Polynomial division

[ABC245E] Wrapping Chocolate

贪心

[ABC245F] Endless Walk

拓扑排序 · 强连通分量

[ABC245G] Foreign Friends

最短路

[ABC245Ex] Product Modulo 2

中国剩余定理 CRT · 组合数学

[ABC246A] Four Points

[ABC246B] Get Closer

[ABC246C] Coupon

[ABC246D] 2-variable Function

数学 · 双指针 two-pointer

[ABC246E] Bishop 2

模拟 · 广度优先搜索 BFS · 剪枝

[ABC246F] typewriter

容斥原理

[ABC246G] Game on Tree 3

[ABC246Ex] 01? Queries

动态 DP

[ABC247A] Move Right

[ABC247B] Unique Nicknames

[ABC247C] 1 2 1 3 1 2 1

[ABC247D] Cylinder

[ABC247E] Max Min

[ABC247F] Cards

动态规划 DP · 并查集

[ABC247G] Dream Team

[ABC247Ex] Rearranging Problem

[ABC248A] Lacked Number

[ABC248B] Slimes

[ABC248C] Dice Sum