Coins

素数判断,质数,筛法

Trees

Calendar

Expression

搜索 · 剪枝

Word

模拟 · 字符串

Fortune Telling

模拟 · 排序 · 概率论

Title

Team Arrangement

Shortest Path

广度优先搜索 BFS

Where Are My Flakes?

Serial Time!

Mushroom Strife

Savior

Mushroom Gnomes

矩阵加速

Ultra-Fast Mathematician

模拟 · 字符串

Hard Work

Capture Valerian

Eternal Victory

Enemy is weak

A Student's Dream

数学 · 贪心

Tyndex.Brome

Inquisition

Wormhouse

World Evil

Sinking Ship

Settlers' Training

Bulls and Cows

模拟 · 枚举

Dividing Island

Sweets Game

动态规划 DP · 搜索 · 博弈论 · 记忆化搜索

Harry Potter and Three Spells

Harry Potter and the History of Magic

Harry Potter and the Golden Snitch

Harry Potter and the Sorting Hat

Harry Potter and Moving Staircases

Petya and Java

模拟 · 字符串 · 枚举

Petya and Countryside

Petya and File System

Petya and His Friends

高精度 · 数论

Petya and Post

动态规划 DP · 线段树 · 枚举

Partial Teacher

Restoration of the Permutation

Sequence of Balls

Optical Experiment

Save the City!

Irrational problem

字符串 · 枚举

Energy exchange

Synchrophasotron

Half-decay tree

Contact

Young Physicist