Arithmetic Progression

implementation, sortings

Canvas Frames

implementation

Good Matrix Elements

implementation

Rebranding

implementation, strings

Bus of Characters

data structures, greedy, implementation

Slime

dp, greedy, implementation

Factory

implementation, math, matrices

Numbers on the Chessboard

implementation, math

Chess Placing

implementation

Maximum Product Strikes Back

brute force, implementation, math, two pointers

K-Dominant Character

binary search, implementation, two pointers

Ladder

dp, implementation, two pointers

Zoning Restrictions Again

implementation

Mister B and Book Reading

implementation

Flag Day

constructive algorithms, implementation

Check the string

implementation

Serval and Toxel's Arrays

combinatorics, dp, implementation, math

Bear and Three Balls

brute force, implementation, sortings

The Best Vacation

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

Mentors

binary search, data structures, implementation

Chores

implementation

Task On The Board

constructive algorithms, greedy, implementation, sortings

Okabe and Future Gadget Laboratory

implementation

Koala and Lights

implementation, math, number theory

Eevee

brute force, implementation, strings

Correct Solution?

implementation, sortings

Waste Sorting

greedy, implementation

Case of Fake Numbers

brute force, implementation

Gerald is into Art

constructive algorithms, implementation

The Fair Nut and Elevator

brute force, implementation

Maximum Absurdity

data structures, dp, implementation

Sea and Islands

constructive algorithms, implementation

Common Divisors

brute force, hashing, implementation, math, strings

Restaurant Tables

implementation

Tanya and Postcard

greedy, implementation, strings

Eugeny and Play List

binary search, implementation, two pointers

Amr and The Large Array

implementation

Make a Square

brute force, implementation, math

Magic Spheres

implementation

Petr and a calendar

implementation, math

Dividing Orange

implementation

Replace the Numbers

constructive algorithms, data structures, dsu, implementation

Pekora and Trampoline

brute force, data structures, dp, greedy, implementation

Spotlights

dp, implementation

Set of Strings

implementation, strings

Polycarp's New Job

implementation

Little Robber Girl's Zoo

constructive algorithms, implementation, sortings

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Kvass and the Fair Nut

greedy, implementation

Network Topology

graphs, implementation

Lucky Permutation Triple

constructive algorithms, implementation, math

Browser

implementation

Polycarp and String Transformation

binary search, implementation, sortings, strings

Chess Tourney

implementation, sortings

Star sky

dp, implementation

Booking System

binary search, dp, greedy, implementation

Declined Finalists

greedy, implementation

Dima and Continuous Line

brute force, implementation

Wilbur and Swimming Pool

geometry, implementation

Berry Jam

data structures, dp, greedy, implementation

Students in Railway Carriage

constructive algorithms, greedy, implementation

Water The Garden

implementation

New Year and Buggy Bot

brute force, implementation

Removing Columns

brute force, constructive algorithms, implementation

Towers

brute force, constructive algorithms, greedy, implementation, sortings

The Modcrab

greedy, implementation

Vanya and Food Processor

implementation, math

Binary Protocol

implementation

One Bomb

implementation

Prizes, Prizes, more Prizes

implementation

The Fair Nut and String

combinatorics, dp, implementation

Character Blocking

data structures, hashing, implementation

Playoff Tournament

data structures, dfs and similar, dp, implementation, trees

USB vs. PS/2

greedy, implementation, sortings, two pointers

Sonya and Robots

constructive algorithms, implementation

Replacement

greedy, implementation, sortings

The Third Letter

dfs and similar, dsu, graphs, greedy, implementation

Link/Cut Tree

brute force, implementation

Card Game

implementation

Berpizza

data structures, implementation

Balanced Substring

dp, implementation

k-th equality

brute force, implementation, math

Strings of Power

implementation, strings, two pointers

Same Count One

brute force, constructive algorithms, greedy, implementation, two pointers

Megacity

binary search, greedy, implementation, sortings

Switches and Lamps

implementation

Intercepted Message

greedy, implementation

Inna and New Matrix of Candies

brute force, implementation, schedules

Numbers

implementation, math

Circular Dance

implementation

Sereja and Coat Rack

implementation

Interview with Oleg

implementation, strings

Minesweeper

implementation

Print Check

constructive algorithms, implementation

Developing Skills

implementation, math, sortings

Paint the Digits

constructive algorithms, greedy, implementation

Views Matter

greedy, implementation, sortings

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Trailing Loves (or L'oeufs?)

brute force, implementation, math, number theory

New Year Present

constructive algorithms, implementation