Flower Shop

*special problem, data structures, fft, math

Falling Blocks

*special problem, data structures

AquaMoon and Potatoes

brute force, data structures, dp

Game with Segments

*special problem, data structures, games

Two Avenues

data structures, dfs and similar, graphs

Two Arrays

data structures, matrices

Build From Suffixes

*special problem, combinatorics, data structures

Railway Construction

brute force, constructive algorithms, data structures, graphs, shortest paths

Game with Two Trees

data structures

Physical Examination

*special problem, binary search, data structures

AquaMoon and Time Stop (easy version)

data structures, dp

AquaMoon and Time Stop (hard version)

data structures, dp

Guarding warehouses

data structures, geometry

Ruler Of The Zoo

brute force, data structures

Lada Malina

data structures, geometry

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

A Battle Against a Dragon

*special problem, data structures, dp

PermutationForces

data structures, greedy

Spaceship Crisis Management

binary search, data structures, geometry, sortings

MUH and Lots and Lots of Segments

data structures, dsu

Balls and Pockets

data structures

Palindromic Magic

data structures, hashing, strings

Submatrices

*special problem, bitmasks, data structures, dp

Two Sequences

data structures, hashing, string suffix structures

Expression Queries

data structures

Balanced Distribution

data structures, dp, greedy

Pisces

data structures, flows, trees

Heaven Tour

data structures, greedy

Recover Polygon (hard)

data structures

Upside Down

data structures, string suffix structures, strings, trees

Desert

data structures, graphs

Optimal Encoding

brute force, data structures

Cut the pie

binary search, data structures, geometry

Duck Hunt

data structures

Soap Time! - 2

binary search, data structures

Turing's Award

data structures, dp

Balance the Cards

constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation

Alphabetic Tree

binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees

Just Kingdom

brute force, data structures, dfs and similar

Nezzar and Tournaments

data structures, greedy

Name the album

*special problem, data structures, implementation

Painting Numbers

*special problem, data structures, greedy, number theory

Array Covering

data structures

Cheat and Win

bitmasks, data structures, games, trees

Rap God

data structures, dfs and similar, hashing, strings, trees

Dreamoon and Notepad

data structures

Red Blue Tree

data structures, implementation, trees

Visible Black Areas

data structures, dsu, geometry, trees

Mixture

*special problem, data structures, geometry, math, sortings

Moving Walkways

data structures, greedy, math

My Beautiful Madness

data structures, trees

Johnny and New Toy

data structures, implementation, math

Jumping Through the Array

binary search, data structures, graphs, two pointers

Cyclic Sum

data structures, fft, number theory

Movie Fan

*special problem, data structures, greedy, implementation, sortings

Growing flowers

data structures

Hopping Around the Array

data structures, dp

Phoenix and Diamonds

binary search, data structures, sortings

Range Diameter Sum

data structures, trees

The Riddle of the Sphinx

binary search, data structures, data structures, interactive

Caramel Clouds

data structures, dp, sortings

Detect Robots

data structures, strings

Gregor and the Two Painters

data structures, divide and conquer, graphs, greedy, math

Moonwalk challenge

data structures, strings, trees

Escaping on Beaveractor

data structures, implementation, trees

Journey

data structures, divide and conquer, graphs, trees

Speckled Band

data structures, divide and conquer, hashing, string suffix structures, strings

Two Posters

brute force, data structures, greedy, two pointers

Boring Card Game

data structures, greedy, trees

Graph Coloring

data structures, graphs, interactive

Dogecoin

*special problem, *special problem, binary search, data structures

Sequence Recovery

bitmasks, data structures, greedy

AmShZ Wins a Bet

data structures, greedy, hashing

Secret Letters

data structures, dp, greedy

Train Tracks

data structures, trees

Slalom

data structures, dp, sortings

Arpa’s abnormal DNA and Mehrdad’s deep interest

data structures, string suffix structures

Holy Diver

data structures

Sequence Transformation

brute force, data structures, dp, implementation, math

Strange Sort

data structures, sortings

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Subset Trick

binary search, data structures

The Fair Nut and Amusing Xor

data structures

Stations

data structures

The Fair Nut's getting crazy

data structures, implementation

Matrix

data structures

Bakery

data structures, dsu

Minimize Inversions Number

data structures, greedy, math, sortings

Mages and Monsters

data structures, geometry

Iqea

data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees

Mashmokh's Designed Problem

data structures

Managing Telephone Poles

data structures, geometry

ELCA

data structures, trees

Mahmoud and Ehab and the final stage

data structures, strings

Squares

constructive algorithms, data structures, dp, graphs, trees

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Listening to Music

constructive algorithms, data structures

Supercollider

data structures

Impressive Harvesting of The Orchard

data structures

Two Rooted Trees

data structures, implementation, trees