Bash Plays with Functions

brute force, combinatorics, dp, number theory

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

PolandBall and Hypothesis

brute force, graphs, math, number theory

Dasha and cyclic table

bitmasks, brute force, fft, strings, trees

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Ilya and tic-tac-toe game

brute force, implementation

Interactive Bulls and Cows (Hard)

brute force, constructive algorithms, interactive

Interactive Bulls and Cows (Easy)

brute force, constructive algorithms, implementation

New Year and Binary Tree Paths

bitmasks, brute force, combinatorics, dp

New Year and Fireworks

brute force, data structures, dfs and similar, dp, implementation

New Year and Hurry

binary search, brute force, implementation, math

Parallelogram is Back

brute force, constructive algorithms, geometry

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Display Size

brute force, math

Hongcow Buys a Deck of Cards

bitmasks, brute force, dp

Vladik and cards

binary search, bitmasks, brute force, dp

Vladik and fractions

brute force, constructive algorithms, math, number theory

Arpa’s obvious problem and Mehrdad’s terrible solution

brute force, math, number theory

Alyona and copybooks

brute force, implementation

Gosha is hunting

brute force, data structures, dp, flows, math, probabilities, sortings

Anton and Digits

brute force, greedy, implementation, math

Buy a Shovel

brute force, constructive algorithms, implementation, math

Video Cards

brute force, data structures, implementation, math, number theory

80-th Level Archeology

brute force, data structures, greedy, sortings

Transformation: from A to B

brute force, dfs and similar, math

Too Much Money

brute force, greedy

Hidden Word

brute force, constructive algorithms, implementation, strings

Batch Sort

brute force, greedy, implementation, math

Broken Clock

brute force, implementation

Bus to Udayland

brute force, implementation

String Set Queries

brute force, data structures, hashing, interactive, string suffix structures, strings

Optimal Point on a Line

brute force, sortings

Beru-taxi

brute force, geometry, implementation

Thor

brute force, data structures, implementation

Powers of Two

brute force, data structures, implementation, math

Limak and Shooting Points

brute force, geometry, math

Barnicle

brute force, implementation, math, strings

Lorenzo Von Matterhorn

brute force, data structures, implementation, trees

Couple Cover

brute force, dp, number theory

Mike and Cellphone

brute force, constructive algorithms, implementation

Dividing Kingdom II

brute force, data structures, dsu, graphs, sortings

Travelling Through the Snow Queen's Kingdom

bitmasks, brute force, divide and conquer, graphs

Kay and Eternity

brute force, implementation, sortings

Robbers' watch

brute force, combinatorics, dp, math

Economy Game

brute force

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

Vanya and Balloons

binary search, brute force, dp, implementation

Restoring Painting

brute force, constructive algorithms, math

Restore a Number

brute force, constructive algorithms, strings

Magic Powder - 1

binary search, brute force, implementation

Holidays

brute force, constructive algorithms, greedy, math

Chain Reaction

brute force, geometry

Shopping

brute force

To Hack or not to Hack

brute force, dp, greedy

Binary Table

bitmasks, brute force, divide and conquer, dp, fft, math

Bear and Up-Down

brute force, implementation

Bear and Compressing

brute force, dfs and similar, dp, strings

Bear and Three Balls

brute force, implementation, sortings

Image Preview

binary search, brute force, dp, two pointers

Amity Assessment

brute force, constructive algorithms, implementation

Little Artem and Dance

brute force, constructive algorithms, implementation

Three-dimensional Turtle Super Computer

brute force, dfs and similar, graphs

Promocodes with Mistakes

*special problem, brute force, constructive algorithms, implementation

Orchestra

brute force, implementation

Fibonacci-ish

brute force, dp, hashing, implementation, math

A Trivial Problem

brute force, constructive algorithms, math, number theory

Ebony and Ivory

brute force, math, number theory

Magic Matrix

brute force, divide and conquer, graphs, matrices, trees

Longest Subsequence

brute force, math, number theory

Alice, Bob, Two Teams

brute force, constructive algorithms

Interview

brute force, implementation

Far Relative’s Problem

brute force

Far Relative’s Birthday Cake

brute force, combinatorics, constructive algorithms, implementation

Jerry's Protest

brute force, combinatorics, dp, probabilities

Block Towers

brute force, greedy, math, number theory

Robot Sequence

brute force, implementation

Rat Kwesh and Cheese

brute force, constructive algorithms, math

Link/Cut Tree

brute force, implementation

Skills

binary search, brute force, dp, greedy, sortings, two pointers

The Text Splitting

brute force, implementation, strings

New Year and Old Property

bitmasks, brute force, implementation

Two Bases

brute force, implementation

Spongebob and Squares

brute force, math

Chocolate Bar

brute force, dp

Edo and Magnets

brute force, greedy, implementation, two pointers

2Char

brute force, implementation

Gennady the Dentist

brute force, implementation

Dima and Lisa

brute force, math, number theory

Three Logos

bitmasks, brute force, constructive algorithms, geometry, implementation, math

Kefa and First Steps

brute force, dp, implementation

Finding Team Member

brute force, implementation, sortings

"Or" Game

brute force, greedy

Party

bitmasks, brute force, graph matchings

Bear and Three Musketeers

brute force, dfs and similar, graphs, hashing

Sign Posts

brute force, geometry, math

Primes or Palindromes?

brute force, implementation, math, number theory

Gerald's Hexagon

brute force, geometry, math

Amr and Chemistry

brute force, graphs, greedy, math, shortest paths

Lala Land and Apple Trees

brute force, implementation, sortings

Arthur and Table

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