Antiamuny and Slider Movement

组合数学 · 排列组合

Determinant Construction (Hard Version)

构造 · Ad-hoc · 行列式

Determinant Construction (Easy Version)

Ode to the Bridge Builder

计算几何 · 构造 · 分类讨论

Maple and Multiplication

Cake Collection

贪心

Shift Sort

模拟

Another Divisibility Problem

数学 · 构造

Ultimate Value

贪心 · 博弈论 · Ad-hoc

A Cruel Segment's Thesis

贪心

Prime Gaming (Hard Version)

博弈论 · 状压 DP

Prime Gaming (Easy Version)

博弈论 · 状压 DP

Sum Minimisation

Furniture Store

Games

Minimum on Subarrays

Avoid Minimums

Perfect Cut

贪心 · Ad-hoc

Array Reduction

Good Robot Paths

Merging Vertices in a Graph

图论 · 构造

Color the Tree

All Lengths Subtraction

双指针 two-pointer

Discounts

贪心 · 排序

Max Tree

图论 · 拓扑排序

Inversion Graph Coloring (Hard Version)

动态规划 DP · 树状数组 · 动态规划优化

Inversion Graph Coloring (Easy Version)

动态规划 DP

Make Good

构造 · Ad-hoc

Increasing Xor

线性基

Cut the Array

枚举 · 前缀和

Maximum Cost Permutation

贪心

Non-Descending Arrays

动态规划 DP

Price Tags

枚举 · 前缀和 · 调和级数

Looking at Towers (difficult version)

动态规划 DP · 线段树 · 树状数组 · 动态规划优化

Looking at Towers (easy version)

动态规划 DP

Bracket Groups

字符串 · 动态规划 DP · AC 自动机 · 构造

Candies for Nephews

Deck of Cards

贪心

Monocarp's String

贪心 · 二分 · 前缀和

Inversion Value of a Permutation

动态规划 DP · 构造

Predicting Popularity

贪心 · 线段树 · 线段树分治

Long Journey

动态规划 DP · 贪心 · 倍增 · 最短路 · 矩阵乘法

Cost of Coloring

动态规划 DP · 分治 · 组合数学

Equal Occurrences

枚举

Merging the Sets

贪心 · 枚举

Wrong Binary Search

构造

Max Sum OR (Hard Version)

贪心 · 分治 · 位运算

Max Sum OR (Easy Version)

贪心 · 位运算

Yet Another MEX Problem

线段树

Bubble Sort

动态规划 DP · 离散化 · 差分