Longest Divisors Interval

Tales of a Sort

Good Arrays

To Become Max

贪心 · 二分

More Wrong

PermuTree (hard version)

PermuTree (easy version)

Array Coloring

Maximum Rounding

Assembly via Minimums

Strong Vertices

Power of Points

Sum and Product

Counting Graphs

Buttons

The Walkway

Yet Another Permutation Problem

Trees and Segments

动态规划 DP · 双指针 two-pointer

Rollbacks (Hard Version)

模拟 · 堆 · 树状数组 · 可持久化线段树 · 栈 · STL

Rollbacks (Easy Version)

可持久化线段树

United We Stand

Olya and Game with Arrays

Another Permutation Problem

Andrey and Escape from Capygrad

Maximum Monogonosity

动态规划 DP · 动态规划优化 · 线性 DP

Teleportation in Byteland

Not a Substring

Fancy Coins

Game on Permutation

Balanced String

Fast Travel Text Editor

广度优先搜索 BFS · 最短路 · 折半搜索 meet in the middle

Evaluate RBS

Prime Deletion

Two Binary Strings

Queries for the Array

Sorting By Multiplication

动态规划 DP

Non-Intersecting Subpermutations

Four Suits

Gift Carpet

Sequence Game

Flower City Fence

Ice Cream Balls

Kolya and Movie Theatre

Magic Will Save the World

动态规划 DP · 背包 DP · bitset

The Great Equalizer

Channel

Split Sort

MEX Repetition

Two-Colored Dominoes

Speedrun

动态规划 DP · 拓扑排序