[ABC127B] Algae

[ABC127C] Prison

[ABC127D] Integer Cards

模拟 · 贪心 · 优先队列

[ABC127E] Cell Distance

[ABC127F] Absolute Minima

[ABC128A] Apple Pie

[ABC128B] Guidebook

[ABC128C] Switches

[ABC128D] equeue

贪心 · 枚举

[ABC128E] Roadwork

[ABC128F] Frog Jump

[ABC129A] Airplane

[ABC129B] Balance

[ABC129C] Typical Stairs

[ABC129D] Lamp

[ABC129E] Sum Equals Xor

[ABC129F] Takahashi's Basics in Education and Learning

[ABC130A] Rounding

[ABC130B] Bounding

[ABC130C] Rectangle Cutting

[ABC130D] Enough Array

[ABC130E] Common Subsequence

动态规划 DP

[ABC130F] Minimum Bounding Box

三分

[ABC131A] Security

[ABC131B] Bite Eating

[ABC131C] Anti-Division

数学 · 最大公约数 gcd

[ABC131D] Megalomania

[ABC131E] Friendships

[ABC131F] Must Be Rectangular!

[ABC132A] Fifty-Fifty

[ABC132B] Ordinary Number

[ABC132C] Divide the Problems

[ABC132D] Blue and Red Balls

组合数学

[ABC132E] Hopscotch Addict

图论 · 广度优先搜索 BFS

[ABC132F] Small Products

动态规划 DP · 整除分块

[ABC133A] T or T

[ABC133B] Good Distance

[ABC133C] Remainder Minimization 2019

[ABC133D] Rain Flows into Dams

[ABC133E] Virus Tree 2

[ABC133F] Colorful Tree

线段树 · 树状数组 · 树链剖分 · 可持久化线段树

[ABC134A] Dodecagon

[ABC134B] Golden Apple

[ABC134C] Exception Handling

[ABC134D] Preparing Boxes

枚举

[ABC134E] Sequence Decomposing

动态规划 DP · 二分 · Dilworth 定理

[ABC134F] Permutation Oddness

动态规划 DP

[ABC135A] Harmony

[ABC135B] 0 or 1 Swap

[ABC135C] City Savers