[ARC148C] Lights Out on Tree

[ARC148D] mod M Game

[ARC148E] ≥ K

[ARC148F] 998244353 → 1000000007

[ARC149A] Repdigit Number

数学 · 枚举

[ARC149B] Two LIS Sum

[ARC149C] Avoid Prime Sum

[ARC149D] Simultaneous Sugoroku

并查集 · 平衡树 · 分块

[ARC149E] Sliding Window Sort

[ARC149F] Rational Number System

[ARC150A] Continuous 1

[ARC150B] Make Divisible

根号分治 · 整除分块

[ARC150C] Path and Subsequence

[ARC150D] Removing Gacha

[ARC150E] Weathercock

[ARC150F] Constant Sum Subsequence

[ARC151A] Equal Hamming Distances

[ARC151B] A < AP

[ARC151C] 01 Game

[ARC151D] Binary Representations and Queries

[ARC151E] Keep Being Substring

[ARC151F] RGB Card Game

[ARC152A] Seat Occupation

[ARC152B] Pass on Path

[ARC152C] Pivot

数学

[ARC152D] Halftree

构造

[ARC152E] Xor Annihilation

[ARC152F] Attraction on Tree

[ARC153A] AABCDDEFE

数学 · 贪心

[ARC153B] Grid Rotations

数学 · 平衡树

[ARC153C] ± Increasing Sequence

前缀和 · 构造 · 差分

[ARC153D] Sum of Sum of Digits

动态规划 DP · 数位 DP

[ARC153E] Deque Minimization

动态规划 DP · 多项式 · 区间 DP · 动态规划优化 · 快速数论变换 NTT

[ARC153F] Tri-Colored Paths

图论 · 双连通分量 · 圆方树

[ARC154A] Swap Digit

数学 · 贪心

[ARC154B] New Place

字符串 · 贪心

[ARC154C] Roller

数学

[ARC154D] A + B > C ?

排序

[ARC154E] Reverse and Inversion

数学 · 期望

[ARC154F] Dice Game

生成函数 · 快速数论变换 NTT

[ARC155A] ST and TS Palindrome

分类讨论

[ARC155B] Abs Abs Function

数学

[ARC155C] Even Sum Triplet

分类讨论

[ARC155D] Avoid Coprime Game

博弈论 · 莫比乌斯反演 · SG 函数

[ARC155E] Split and Square

线性基

[ARC155F] Directable as Desired

组合数学 · 快速数论变换 NTT · Prüfer 序列

[ARC156A] Non-Adjacent Flip

数学 · 分类讨论

[ARC156B] Mex on Blackboard

组合数学 · 排列组合

[ARC156C] Tree and LCS

树论 · 构造

[ARC156D] Xor Sum 5

数位 DP · 生成函数 · Lucas 定理