[ABC217B] AtCoder Quiz

[ABC217C] Inverse of Permutation

[ABC217D] Cutting Woods

[ABC217E] Sorting Queries

[ABC217F] Make Pair

动态规划 DP · 区间 DP · 组合数学

[ABC217G] Groups

动态规划 DP · 组合数学

[ABC217H] Snuketoon

动态规划 DP · 斜率维护技巧 slope trick

[ABC218A] Weather Forecast

[ABC218B] qwerty

[ABC218C] Shapes

[ABC218D] Rectangles

[ABC218E] Destruction

[ABC218F] Blocked Roads

广度优先搜索 BFS · 最短路

[ABC218G] Game on Tree 2

[ABC218H] Red and Blue Lamps

O2优化 · 凸完全单调性（wqs 二分） · 动态 DP

[ABC219A] AtCoder Quiz 2

[ABC219B] Maritozzo

[ABC219C] Neo-lexicographic Ordering

[ABC219D] Strange Lunchbox

[ABC219E] Moat

[ABC219F] Cleaning Robot

[ABC219G] Propagation

根号分治

[ABC219H] Candles

动态规划 DP · 区间 DP

[ABC220A] Find Multiple

[ABC220B] Base K

[ABC220C] Long Sequence

[ABC220D] FG operation

[ABC220E] Distance on Large Perfect Binary Tree

[ABC220F] Distance Sums 2

[ABC220G] Isosceles Trapezium

[ABC220H] Security Camera

[ABC221A] Seismic magnitude scales

[ABC221B] typo

[ABC221C] Select Mul

[ABC221D] Online games

[ABC221E] LEQ

[ABC221F] Diameter set

[ABC221G] Jumping sequence

[ABC221H] Count Multiset

动态规划 DP

[ABC222A] Four Digits

[ABC222B] Failing Grade

[ABC222C] Swiss-System Tournament

[ABC222D] Between Two Arrays

[ABC222E] Red and Blue Tree

背包 DP

[ABC222F] Expensive Expense

线段树 · 树形 DP · 树的直径

[ABC222G] 222

数论 · 欧拉函数

[ABC222H] Beautiful Binary Tree

拉格朗日反演

[ABC223A] Exact Price

[ABC223B] String Shifting

[ABC223C] Doukasen