Points in Segments

Obtaining the String

字符串 · 贪心

Songs Compression

Walking Between Houses

Stars Drawing (Hard Edition)

Stars Drawing (Easy Edition)

动态规划 DP · 贪心 · 深度优先搜索 DFS

Bracket Substring

字符串 · 递推 · 枚举

Death Note

Segment Occurrences

前缀和

Vasya And The Mushrooms

模拟 · 递推 · 前缀和

Vasya And The Matrix

进制 · 构造

Rest In The Shades

Road Projects

Appropriate Team

状态合并 · 素数判断,质数,筛法 · 概率论

The Rank

枚举 · 排序

The Bits

数学 · 概率论 · 构造

The Phone Number

模拟 · 数学 · 构造

The Wu

The Supersonic Rocket

字符串 · 凸包 · KMP 算法

The Neutral Zone

The Tree

线段树 · 树链剖分

The Films

Elections

贪心 · 枚举 · 排序

The hat

Sergey's problem

Large Triangle

Raining season

New Building for SIS

Badge

Single Wildcard Pattern Matching

模拟 · 字符串

Pair of Toys

Bracket Subsequence

字符串 · 贪心 · 枚举

Array Restoration

线段树

Down or Right

Mobile Phone Network

生成树 · 树链剖分

Pisces

动态规划 DP · Dilworth 定理

Doggo Recoloring

模拟 · 概率论

Weakened Common Divisor

素数判断,质数,筛法

Plasticine zebra

字符串

Recovering BST

搜索 · 构造

Colored Cubes

Disjoint Triangles

Company Acquisitions

鞅的停时定理

Palindromic Twist

Numbers on the Chessboard

Minimum Value Rectangle

贪心 · 排序

Mouse Hunt

模拟 · 强连通分量 · 基环树

Inverse Coloring

Session in BSU

并查集 · 连通块

X-mouse in the Campus