Day at the Beach

Spongebob and Squares

Sandy and Nuts

动态规划 DP · 枚举 · 最近公共祖先 LCA

Extract Numbers

Queries about less or equal elements

Make Palindrome

Area of Two Circles' Intersection

Lomsat gelral

搜索 · 莫队 · 线段树 · 树上启发式合并 · 启发式搜索 · 线段树合并

Edge coloring of bipartite graph

二分图

The Two Routes

最短路

Lipshitz Sequence

Kleofáš and the n-thlon

Acyclic Organic Compounds

A Museum Robbery

背包 DP · 线段树分治

Two Bases

Approximating a Constant Range

Alternative Thinking

Moodular Arithmetic

Lieges of Legendre

Ruminations on Ruminants

Pastoral Oddities

Uncowed Forces

More Cowbell

Sorting Railway Cars

排序

Lazy Student

Freelancer's Dreams

向量 · 凸包

Board Game

Intergalaxy Trips

数学 · 图论 · 期望

Magic Spheres

Testing Robots

Chain Reaction

动态规划 DP · 二分

Zuma

搜索 · 记忆化搜索 · 区间 DP

Marbles

Power Tree

Cross Sum

Saitama Destroys Hotel

Hamming Distance Sum

USB Flash Drives

模拟 · 贪心 · 排序

The Best Gift

Load Balancing

Gadgets for dollars and pounds

贪心 · 二分 · 前缀和

Minimum spanning tree for each edge

生成树 · 最近公共祖先 LCA · 树链剖分

Frogs and mosquitoes

Pasha and Stick

Vika and Squares

Harmony Analysis

Vika and Segments

Alphabet Permutations

New Year and Days

New Year and Old Property

位运算