Nastya and Strange Generator

Nastya and Scoreboard

Nastya and Unexpected Guest

Nastya and Time Machine

Nastya and Bees

Nastya and CBS

Nastya and Rice

Nastya and Door

Road To Zero

Binary Period

贪心 · 构造

Yet Another Counting Problem

Multiple Testcases

Placing Rooks

组合数学 · 容斥原理 · Stirling 数

Make It Ascending

状态合并 · 状压 DP

Candies

Balanced Array

Alternating Subsequence

Constant Palindrome Sum

Weights Distributing

Restore the Permutation by Sorted Segments

Hilbert's Hotel

Monopole Magnets

Quantifier Question

Résumé Review

拉格朗日乘数法

Train Tracks

Piet's Palette

Puzzle Pieces

Card Constructions

Boot Camp

Spring Cleaning

Constructing the Dungeon

Magic Tricks

Dune II: Battle For Arrakis

Two IP Cameras

Game with Segments

Pac-Man 2.0

Phoenix and Balance

Phoenix and Beauty

Phoenix and Distribution

Phoenix and Science

Phoenix and Berries

动态规划 DP · 贪心

Phoenix and Memory

贪心 · 线段树

Orac and LCM

Orac and Medians

Orac and Game of Life

搜索 · 广度优先搜索 BFS

Slime and Biscuits

鞅的停时定理

Slime and Hats

Slime and Sequences (Hard Version)

Slime and Sequences (Easy Version)

组合数学 · Ad-hoc

Orac and Factors