Find Square

Unnatural Conditions

Rectangles

Order book

Restore Array

Make Symmetrical

Guess the number

Make Square

Many Equal Substrings

字符串 · KMP 算法 · 构造

Creating the Contest

贪心 · 单调队列 · 队列

Maximal Intersection

贪心 · 枚举 · 优先队列

Concatenated Multiples

Tree with Small Distances

动态规划 DP · 贪心

Multicolored Markers

数学 · 枚举

In Search of an Easy Problem

Vasya and Cornfield

Vasya and Golden Ticket

搜索 · 枚举 · 前缀和

Vasya and Triangle

枚举 · 素数判断,质数,筛法 · 构造

Vasya and Good Sequences

动态规划 DP · 枚举 · 进制

Putting Boxes Together

Linear Congruential Generator

Golden Plate

Curiosity Has No Limits

枚举

Cram Time

Minimum path

广度优先搜索 BFS · 深度优先搜索 DFS

Triple Flips

枚举

Familiar Operations

Kitchen Utensils

Personalized Cup

Playing Piano

Barcelonian Distance

The Unbearable Lightness of Weights

Vasya and Maximum Matching

Chattering

King Escape

Square Difference

Permutation Game

Divisors

数学 · 枚举 · 素数判断,质数,筛法

Hidden Bipartite Graph

图论 · 二分 · 生成树 · 二分图

Boolean Computer

Chip Game

Enlarge GCD

枚举 · 素数判断,质数,筛法 · 概率论

Little C Loves 3 II

Region Separation

Intervals of Intervals

Little C Loves 3 III

数学 · 快速沃尔什变换 FWT · 集合幂级数，子集卷积

Function Height

Diagonal Walking v.2

Classy Numbers

搜索 · 记忆化搜索 · 数位 DP

Vasya and Arrays