Ralph And His Tour in Binary Country

brute force, data structures, trees

Roads in Yusland

data structures, dp, greedy

Guess Your Way Out! II

data structures, implementation, sortings

Captains Mode

bitmasks, dp, games

Bear and Company

dp

Fancy Stack

combinatorics, dp, implementation

Happy New Year

bitmasks, dp, implementation

Shifting

implementation

Mischievous Shooter

brute force, data structures, divide and conquer, dp, implementation

Painting Edges

binary search, data structures

New Year and Castle Construction

combinatorics, geometry, math, sortings

Idempotent functions

constructive algorithms, graphs, math

Turn

geometry, math

Freelancer's Dreams

geometry

Typical Party in Dorm

bitmasks, combinatorics, dp, strings

Abbreviation

dp, hashing, strings

GCD Table

chinese remainder theorem, math, number theory

Мониторинг

*special problem, *special problem

Drivers Dissatisfaction

data structures, dsu, graphs, trees

There and Back Again

Awesome Substrings

math, strings

Squares

math

Conveyor

constructive algorithms, dp, math

String Mark

combinatorics, math, strings

Numbers

constructive algorithms, implementation

Leaf Partition

dp, trees

Valera and Fools

dfs and similar, dp, graphs, shortest paths

Bricks

flows, graph matchings, graphs

Любимые числа Поликарпа

constructive algorithms, implementation

Acyclic Organic Compounds

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

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

April Fools' Problem (medium)

binary search, flows, graphs

Developing Game

data structures

Strange Function

binary search, data structures, dp, greedy

Mice and Holes

data structures, dp, greedy, sortings

Cow and Treats

binary search, combinatorics, dp, greedy, implementation, math

Animals and Puzzle

binary search, data structures

Little Elephant and Strings

data structures, implementation, string suffix structures, two pointers

Little Elephant and Furik and Rubik

math, probabilities

Three Days Grace

data structures, dp, greedy, math, number theory, two pointers

Middle Duplication

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

Sergey's problem

constructive algorithms, graphs

Road Widening

constructive algorithms, greedy, implementation

Largest Beautiful Number

greedy, implementation

Add on a Tree: Revolution

constructive algorithms, dfs and similar, implementation, trees

Good Subsegments

data structures

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Koala and Notebook

data structures, dfs and similar, graphs, shortest paths, strings, trees

King Kog's Reception

data structures

Team Rocket Rises Again

data structures, graphs, shortest paths

Range Increments

data structures, greedy

Controversial Rounds

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

Sereja and Intervals

combinatorics, dp

Before Exam

constructive algorithms, implementation, sortings

Permutation and Queries

brute force, data structures, divide and conquer, two pointers

Frog Jumping

dfs and similar, math, number theory

Traffic Jams in the Land

data structures, dp, number theory

Travel Plan

combinatorics, dp, implementation, math, trees

Card Game

binary search, flows, graphs

Classical?

binary search, combinatorics, number theory

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

Beautiful Pairs of Numbers

combinatorics, dp

New Passenger Trams

binary search, brute force, data structures, sortings, two pointers

Best Edge Weight

data structures, dfs and similar, graphs, trees

Area of a Star

geometry

Levko and Strings

combinatorics, dp

Text Editor

brute force, dp, greedy, strings

Transmitting Levels

dp, implementation

Circle of Numbers

brute force, dfs and similar, implementation

A Piece of Cake

*special problem, implementation

Annual Ants' Gathering

dfs and similar, dp, greedy, trees

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Labyrinth

binary search, dsu, greedy

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees

Minimal String Xoration

bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings

Little Artem and Random Variable

dp, implementation, math, probabilities

Journey

brute force, constructive algorithms, implementation

Right Expansion Of The Mind

math

Lemmings

binary search

Byteland, Berland and Disputed Cities

constructive algorithms, greedy

Deletion of Repeats

greedy, hashing, string suffix structures

Rare Coins

combinatorics, math, probabilities

Present for Vitalik the Philatelist

combinatorics, math, number theory

Tokens on Graph

constructive algorithms, dfs and similar, graphs, shortest paths

Blocking Chips

binary search, constructive algorithms, dfs and similar, greedy, trees

Nastya Hasn't Written a Legend

binary search, data structures

Bracket Substring

dp, strings

Bribes

dfs and similar, graphs, trees

Two Arrays

bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers

Super Jaber

dfs and similar, graphs, implementation, shortest paths

Biologist

flows

Nanami's Digital Board

dsu, implementation

On Sum of Fractions

math, number theory

Colored Balls

greedy, math, number theory

Disks

dfs and similar, geometry, graph matchings, graphs

Pokémon Arena

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

Seller Bob

brute force, dp, greedy

Teams Formation

data structures, implementation

Kicker

implementation

Maximum Questions

data structures, dp, strings