Design Tutorial: Learn from Math

Design Tutorial: Learn from Life

Design Tutorial: Make It Nondeterministic

Design Tutorial: Inverse the Problem

Design Tutorial: Learn from a Game

Design Tutorial: Change the Goal

Design Tutorial: Increase the Constraints

Keyboard

Worms

Captain Marmot

Flowers

动态规划 DP · 前缀和

Pillars

Ant colony

线段树 · 离散化

Bayan Bus

Strongly Connected City

Kamal-ol-molk's Painting

CGCDSSQ

倍增 · 枚举 · 最大公约数 gcd · 线性递推

Strongly Connected City 2

Meta-universe

Dreamoon and Stairs

枚举

Dreamoon and WiFi

Dreamoon and Sums

Dreamoon and Sets

构造

Dreamoon and Strings

Dreamoon and Binary

Dreamoon and Notepad

模拟 · 二分 · ST 表 · 分类讨论

Initial Bet

Random Teams

Table Decorations

Red-Green Towers

动态规划 DP · 背包 DP

Wavy numbers

Expression

Towers

Exams

Long Jumps

Riding in a Lift

动态规划 DP · 前缀和

Parcels

Parking Lot

二分 · 单调队列 · ST 表

Diverse Permutation

Interesting Array

线段树 · 进制 · 构造

Game with Strings

字符串 · 状态合并 · 期望

Random Function and Tree

ELCA

Counterexample

Friends and Presents

Bits

贪心 · 进制 · 位运算

Maximum Value

Strange Sorting

字符串 · 递推 · 排序

Kindergarten

动态规划 DP · 贪心

Sign on Fence