[ABC310Ex] Negative Cost

[ABC311A] First ABC

模拟

[ABC311B] Vacation Together

模拟

[ABC311C] Find it!

基环树

[ABC311D] Grid Ice Floor

广度优先搜索 BFS

[ABC311E] Defect-free Squares

动态规划 DP · 前缀和

[ABC311F] Yet Another Grid Task

动态规划 DP

[ABC311G] One More Grid Task

枚举 · 单调栈

[ABC311Ex] Many Illumination Plans

[ABC312A] Chord

模拟

[ABC312B] TaK Code

模拟 · 枚举

[ABC312C] Invisible Hand

贪心 · 枚举

[ABC312D] Count Bracket Sequences

动态规划 DP

[ABC312E] Tangency of Cuboids

枚举

[ABC312F] Cans and Openers

贪心 · 枚举

[ABC312G] Avoid Straight Line

树论

[ABC312Ex] snukesnuke

哈希 hashing · KMP 算法 · 均摊分析 · 调和级数

[ABC313A] To Be Saikyo

模拟

[ABC313B] Who is Saikyo?

枚举

[ABC313C] Approximate Equalization 2

贪心

[ABC313D] Odd or Even

构造

[ABC313E] Duplicate

递推

[ABC313F] Flip Machines

根号分治

[ABC313G] Redistribution of Piles

类欧几里得算法

[ABC313Ex] Group Photo

动态规划 DP

[ABC314A] 3.14

模拟

[ABC314B] Roulette

模拟

[ABC314C] Rotate Colored Subsequence

模拟

[ABC314D] LOWER

模拟

[ABC314E] Roulettes

动态规划 DP · 期望

[ABC314F] A Certain Game

并查集

[ABC314G] Amulets

贪心

[ABC314Ex] Disk and Segments

计算几何 · 三分 · 模拟退火

[ABC315A] tcdr

模拟

[ABC315B] The Middle Day

枚举

[ABC315C] Flavors

贪心 · 枚举

[ABC315D] Magical Cookies

模拟 · 枚举

[ABC315E] Prerequisites

拓扑排序

[ABC315F] Shortcuts

动态规划 DP

[ABC315G] Ai + Bj + Ck = X (1 <= i, j, k <= N)

枚举 · 扩展欧几里德算法 · 类欧几里得算法

[ABC315Ex] Typical Convolution Problem

cdq 分治 · 快速数论变换 NTT

[ABC317A] Potions

枚举

[ABC317B] MissingNo.

枚举

[ABC317C] Remembering the Days

[ABC317D] President

背包 DP

[ABC317E] Avoid Eye Contact

模拟 · 广度优先搜索 BFS

[ABC317F] Nim

数位 DP

[ABC317G] Rearranging

网络流 · 二分图

[ABC317Ex] Walk

生成函数 · 线性递推

[ABC318A] Full Moon

枚举