Amazing Trick

BinCoin

Dominoes

Easy Assembly

离散化

Football

Game of Questions

Hot and Cold

Interactive Factorial Guessing

Jumbled Trees

Lisa's Sequences

Add Plus Minus Sign

Coloring

贪心 · 鸽笼原理

Ice and Fire

Same Count One

贪心 · 构造 · 双指针 two-pointer

Two Chess Pieces

动态规划 DP · 树形 DP

Magician and Pigs (Hard Version)

Magician and Pigs (Easy Version)

Segment Covering

倍增 · 最近公共祖先 LCA · 组合数学 · 容斥原理

Maximum Permutation

构造

Gardener and the Capybaras (hard version)

Gardener and the Capybaras (easy version)

Gardener and the Array

位运算 · 构造

Interesting Sequence

Friendly Spiders

图论 · 最短路 · 二分图 · 素数判断,质数,筛法 · 最大公约数 gcd

The Human Equation

Laboratory on Pluto

动态规划 DP · 组合数学 · 构造

Walking Boy

Vittorio Plays with LEGO Bricks

Library game

Teamwork

Crossing the Railways

Train Splitting

Another Wine Tasting Event

Beppa and SwerChat

Spinach Pizza

Italian Data Centers

Uniform Chemistry

Controllers

Parmigiana With Seafood

动态规划 DP · 数学 · 二分 · 树形 DP

Count Permutations

杨表

Everybody Likes Good Arrays!

Emordnilap

Quiz Master

二分 · 数论 · 双指针 two-pointer

Score of a Tree

组合数学

Edge Reverse

图论 · 二分 · Tarjan

Comfortably Numb

分治 · 可持久化 · 笛卡尔树 · 启发式合并

Flip Flop Sum

The Forbidden Permutation

Flexible String

Flexible String Revisit