LIS?

data structures, greedy, implementation

Qingshan and Daniel

brute force, data structures, greedy, implementation

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Andrey's Tree

binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees

Strange Instructions

data structures, greedy, implementation

Misha and Paintings

constructive algorithms, data structures, greedy, implementation, math

Points Movement

data structures, dp, greedy, implementation, sortings

Greedy Shopping

binary search, data structures, divide and conquer, greedy, implementation

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Reading Books (hard version)

data structures, greedy, implementation, sortings, ternary search, two pointers

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

Nastia Plays with a Tree

constructive algorithms, data structures, dfs and similar, dp, dsu, greedy, implementation, trees

New Year and the Acquaintance Estimation

binary search, data structures, graphs, greedy, implementation, math, sortings

Labeling the Tree with Distances

data structures, dp, greedy, hashing, implementation, trees

Pokémon Arena

data structures, graphs, greedy, implementation, shortest paths, sortings

Restore the Permutation by Sorted Segments

brute force, constructive algorithms, data structures, greedy, implementation

Drazil Likes Heap

constructive algorithms, data structures, greedy, implementation

DeadLee

data structures, dfs and similar, greedy, implementation, sortings

Editorial for Two

binary search, data structures, greedy, implementation

Are You Fired?

constructive algorithms, data structures, greedy, implementation

Rectangle Shrinking

binary search, brute force, data structures, greedy, implementation, two pointers

Queue in the Train

data structures, greedy, implementation

Sum Queries?

data structures, greedy, implementation, math

Alice and the Doll

brute force, data structures, greedy, implementation

New School

binary search, data structures, dp, greedy, implementation, sortings

Removing Leaves

data structures, greedy, implementation, trees

Chain Reaction

binary search, data structures, dsu, greedy, implementation, math, number theory

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Two Types of Spells

binary search, data structures, greedy, implementation, math, sortings

Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Colorful Points

data structures, greedy, implementation

Spaceship Solitaire

data structures, greedy, implementation

Unstable String Sort

data structures, dfs and similar, dsu, graphs, greedy, implementation, strings

Rain

binary search, brute force, data structures, geometry, greedy, implementation, math

Learning to Paint

binary search, data structures, dfs and similar, dp, greedy, implementation, sortings

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

Portals

data structures, dp, greedy, implementation, sortings

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Pokémon Army (hard version)

data structures, divide and conquer, dp, greedy, implementation

Big Maximum Sum

data structures, dp, greedy, implementation, math, trees

TV Shows

data structures, greedy, implementation, sortings

Stack Sorting

constructive algorithms, data structures, greedy, implementation

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Decreasing Debts

constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers

Robot in a Hallway

data structures, dp, greedy, implementation, ternary search

Big Brush

constructive algorithms, data structures, greedy, implementation

Cut and Stick

binary search, data structures, greedy, implementation, sortings

Robot Collisions

data structures, greedy, implementation, sortings

The Strongest Build

binary search, brute force, data structures, dfs and similar, graphs, greedy, hashing, implementation

Cheap Dinner

brute force, data structures, graphs, greedy, implementation, sortings, two pointers

Omkar and Medians

data structures, greedy, implementation

Captain Flint and Treasure

data structures, dfs and similar, graphs, greedy, implementation, trees

Credit Card

data structures, dp, greedy, implementation

Professor Higashikata

data structures, dsu, greedy, implementation, strings

Microcycle

data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees

Reverse Sort Sum

constructive algorithms, data structures, greedy, implementation, math, two pointers

Rescheduling the Exam

binary search, data structures, greedy, implementation, math, sortings

Equalize the Remainders

data structures, greedy, implementation

Survey in Class

brute force, data structures, greedy, implementation, sortings

Restore Permutation

binary search, data structures, greedy, implementation

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Set To Max (Hard Version)

constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings

Identify the Operations

combinatorics, data structures, dsu, greedy, implementation

Clique Problem

data structures, dp, greedy, implementation, sortings

Desktop Rearrangement

data structures, greedy, implementation

Rating Compression

binary search, data structures, greedy, implementation, two pointers

Portal

brute force, data structures, dp, greedy, implementation

Shurikens

data structures, greedy, implementation

Berry Jam

data structures, dp, greedy, implementation

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

MEX and Increments

constructive algorithms, data structures, dp, greedy, implementation, math, sortings

Monsters And Spells

binary search, data structures, dp, greedy, implementation, math, two pointers

Array Destruction

brute force, constructive algorithms, data structures, greedy, implementation, sortings

Color the Fence

data structures, dp, greedy, implementation

Alyona and Spreadsheet

binary search, data structures, dp, greedy, implementation, two pointers

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Compression and Expansion

brute force, data structures, greedy, implementation, trees

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

MEX maximizing

data structures, greedy, implementation, math

Gardener and Tree

brute force, data structures, dfs and similar, greedy, implementation, trees

Alternating Current

data structures, greedy, implementation

Integers Shop

data structures, greedy, implementation

Nastya and Strange Generator

brute force, data structures, greedy, implementation

Binary String To Subsequences

constructive algorithms, data structures, greedy, implementation

Little Girl and Maximum Sum

data structures, greedy, implementation, sortings

Multithreading

data structures, greedy, implementation

Alice and the Cake

data structures, greedy, implementation, sortings

Number Game

binary search, data structures, games, greedy, implementation

awoo's Favorite Problem

binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers

Applejack and Storages

constructive algorithms, data structures, greedy, implementation

Rotation Matching

constructive algorithms, data structures, greedy, implementation

Order Book

data structures, greedy, implementation, sortings

Bus of Characters

data structures, greedy, implementation

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Vika and the Bridge

binary search, data structures, greedy, implementation, math, sortings

Subsequence Addition (Easy Version)

brute force, data structures, dp, greedy, implementation, sortings

Frog Jumps

binary search, data structures, dfs and similar, greedy, implementation

Three Sevens

brute force, data structures, greedy, implementation

Numbers on Whiteboard

constructive algorithms, data structures, greedy, implementation, math