[ARC136E] Non-coprime DAG

[ARC136F] Flip Cells

[ARC137A] Coprime Pair

[ARC137B] Count 1's

[ARC137C] Distinct Numbers

贪心 · 博弈论

[ARC137D] Prefix XORs

排列组合 · 前缀和 · 位运算 · Lucas 定理

[ARC137E] Bakery

[ARC137F] Overlaps

[ARC138A] Larger Score

[ARC138B] 01 Generation

[ARC138C] Rotate and Play Game

[ARC138D] Differ by K bits

线性基

[ARC138E] Decreasing Subsequence

[ARC138F] KD Tree

[ARC139A] Trailing Zeros

[ARC139B] Make N

[ARC139C] One Three Nine

[ARC139D] Priority Queue 2

[ARC139E] Wazir

[ARC139F] Many Xor Optimization Problems

[ARC140A] Right String

[ARC140B] Shorten ARC

[ARC140C] ABS Permutation (LIS ver.)

[ARC140D] One to One

[ARC140E] Not Equal Rectangle

[ARC140F] ABS Permutation (Count ver.)

容斥原理 · 生成函数 · 快速傅里叶变换 FFT · Ad-hoc

[ARC141A] Periodic Number

[ARC141B] Increasing Prefix XOR

[ARC141C] Bracket and Permutation

[ARC141D] Non-divisible Set

[ARC141E] Sliding Edge on Torus

[ARC141F] Well-defined Abbreviation

[ARC142A] Reverse and Minimize

[ARC142B] Unbalanced Squares

[ARC142C] Tree Queries

[ARC142D] Deterministic Placing

树形 DP

[ARC142E] Pairing Wizards

[ARC142F] Paired Wizards

[ARC143A] Three Integers

[ARC143B] Counting Grids

[ARC143C] Piles of Pebbles

[ARC143D] Bridges

[ARC143E] Reversi

贪心 · 拓扑排序

[ARC143F] Counting Subsets

[ARC144A] Digit Sum of 2x

[ARC144B] Gift Tax

[ARC144C] K Derangement

[ARC144D] AND OR Equation

排列组合 · Ad-hoc

[ARC144E] GCD of Path Weights

图论 · 数论 · 树形 DP

[ARC144F] Arithmetic Sequence Nim

博弈论 · 其它技巧 · 分类讨论 · SG 函数