[ARC115B] Plus Matrix

构造

[ARC115C] ℕ Coloring

[ARC115D] Odd Degree

[ARC115E] LEQ and NEQ

动态规划 DP · 线段树 · 容斥原理 · 单调栈

[ARC115F] Migration

[ARC116A] Odd vs Even

[ARC116B] Products of Min-Max

[ARC116C] Multiple Sequences

[ARC116D] I Wanna Win The Game

[ARC116E] Spread of Information

动态规划 DP · 贪心 · 二分 · 树形 DP

[ARC116F] Deque Game

[ARC117A] God Sequence

[ARC117B] ARC Wrecker

[ARC117C] Tricolor Pyramid

数论 · Lucas 定理

[ARC117D] Miracle Tree

树的直径

[ARC117E] Zero-Sum Ranges 2

[ARC117F] Gateau

[ARC118A] Tax Included Price

[ARC118B] Village of M People

[ARC118C] Coprime Set

[ARC118D] Hamiltonian Cycle

[ARC118E] Avoid Permutations

[ARC118F] Growth Rate

[ARC119A] 119 × 2^23 + 1

[ARC119B] Electric Board

[ARC119C] ARC Wrecker 2

[ARC119D] Grid Repainting 3

[ARC119E] Pancakes

[ARC119F] AtCoder Express 3

动态规划 DP · 动态规划优化 · 有限状态自动机 · DP 套 DP

[ARC120A] Max Add

[ARC120B] Uniformly Distributed

[ARC120C] Swaps 2

[ARC120D] Bracket Score 2

[ARC120E] 1D Party

[ARC120F] Wine Thief

组合数学 · 前缀和 · 生成函数

[ARC120F2] Wine Thief

[ARC121A] 2nd Greatest Distance

[ARC121B] RGB Matching

贪心 · 分类讨论

[ARC121C] Odd Even Sort

贪心 · 枚举 · 排序 · 构造

[ARC121D] 1 or 2

[ARC121E] Directed Tree

[ARC121F] Logical Operations on Tree

[ARC122A] Many Formulae

[ARC122B] Insurance

[ARC122C] Calculator

数论 · Fibonacci 数列 · Ad-hoc

[ARC122D] XOR Game

[ARC122E] Increasing LCMs

[ARC122F] Domination

[ARC123A] Arithmetic Sequence

[ARC123B] Increasing Triples