New Year and Domino

New Year and Ancient Prophecy

New Year and Three Musketeers

New Year and Cleaning

New Year and Cake

New Year and Forgotten Tree

The Text Splitting

HDD is Outdated Technology

Replace To Make Regular Bracket Sequence

The Union of k-Segments

离散化 · 差分

Square Root of Permutation

Simba on the Circle

Peter and Snow Blower

模拟 · 数学 · 构造

Skills

Necklace

Kingdom and its Cities

动态规划 DP · 虚树

Puzzle Lover

Link/Cut Tree

Gena's Code

Bulbs

Longtail Hedgehog

Running Track

Multipliers

Hexagons

Comparing Two Long Integers

Dinner with Emma

The Labyrinth

Longest k-Good Segment

双指针 two-pointer

Sum of Remainders

数学

Expensive Strings

Elephant

Chocolate

Watering Flowers

Polyline

XOR and Favorite Number

莫队

Slime Combining

Guess the Permutation

Constellation

Hamiltonian Spanning Tree

贪心

Robot Arm

Double Knapsack

鸽笼原理 · 双指针 two-pointer

Combining Slimes

Professor GukiZ's Robot

Grandfather Dovlet’s calculator

Pearls in a Row

Professor GukiZ and Two Arrays

New Year Tree

线段树 · 状态合并 · 进制

Xors on Segments

莫队 · 分块 · 字典树 Trie · 位运算

Wet Shark and Odd and Even

排序

Wet Shark and Bishops