Nudist Beach

binary search, graphs, greedy

Playlist

math, probabilities, sortings

Game with Powers

dp, games

Common Divisor Graph

brute force, constructive algorithms, dsu, graphs, hashing, math, number theory

Vasya and Array

dp

Little Victor and Set

brute force, constructive algorithms, math

Rectangle Painting 2

flows, graph matchings, graphs

The World Is Just a Programming Task (Hard Version)

implementation

Deduction Queries

data structures, dsu

Flip the Cards

2-sat, constructive algorithms, data structures, greedy, sortings, two pointers

Flip and Reverse

data structures, graphs, greedy

Foo Fighters

bitmasks, constructive algorithms

Famil Door and Roads

combinatorics, data structures, dfs and similar, dp, probabilities, trees

Mathematics Curriculum

brute force, combinatorics, dp, trees

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Two Melodies

dp, flows

Hexagons

binary search, implementation, math

Blocked Points

math

Alice, Bob, Oranges and Apples

number theory

Boring Queries

data structures, math, number theory

Omkar and Last Floor

dp, greedy, two pointers

Rat Kwesh and Cheese

brute force, constructive algorithms, math

Yet Another String Matching Problem

fft, math

Embassy Queue

data structures, greedy

Parking Lot

data structures, implementation

Security

data structures, string suffix structures

Antennas

data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths

Madoka and the Sixth-graders

data structures, dfs and similar, greedy

Spiral Maximum

brute force, dp

George and Interesting Graph

graph matchings

Hossam and Range Minimum Query

binary search, bitmasks, data structures, hashing, probabilities, strings, trees

Odd Mineral Resource

binary search, bitmasks, brute force, data structures, probabilities, trees

Not Same

constructive algorithms

Maximum Matching

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

Bear and Drawing

constructive algorithms, dfs and similar, trees

Curious Array

brute force, combinatorics, implementation, math

Greedy Subsequences

data structures, dp, trees

Adam and Tree

data structures, trees

Two Permutations (Easy Version)

brute force, constructive algorithms, greedy, number theory

Factorization

*special problem, number theory

Paper task

data structures, string suffix structures, strings

Fence Divercity

combinatorics, dp, number theory

Chessboard Billiard

dfs and similar, dsu, graphs, number theory

Death DBMS

data structures, string suffix structures, strings, trees

Indie Album

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

Wooden Spoon

combinatorics, dp

Group Photo

binary search, data structures, implementation, two pointers

Bicolored Segments

data structures, dp, graph matchings, sortings

The table

constructive algorithms, greedy

Lunar New Year and a Recursive Sequence

math, matrices, number theory

Exploration plan

binary search, flows, graph matchings, shortest paths

Résumé Review

binary search, greedy, math

Change-free

greedy

Optimize!

data structures

Isolation

data structures, dp

Mean Requests

*special problem, implementation

Password

bitmasks, dp, shortest paths

Rosetta Problem

*special problem

Social Network

greedy, two pointers

Kuroni and Antihype

bitmasks, brute force, dp, dsu, graphs

Prairie Partition

binary search, constructive algorithms, greedy, math

Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Anti-Palindromize

flows, graphs, greedy

Russian Roulette

constructive algorithms, greedy

Field Photography

bitmasks, data structures, sortings

Neko and Flashback

constructive algorithms, dfs and similar, graphs

Twin Clusters

bitmasks, brute force, constructive algorithms, math, probabilities

Inna and Binary Logic

binary search, bitmasks, data structures

Vasily the Bear and Beautiful Strings

combinatorics, math, number theory

Beautiful IP Addresses

brute force

Phoenix and Odometers

dfs and similar, graphs, math, number theory

Maximum Reduction

combinatorics, data structures, math

Fox And Travelling

dp, trees

Rest In The Shades

binary search, geometry

Dot

dp, games

Подкрутка I

*special problem, brute force, dp, greedy

Heidi Learns Hashing (Medium)

brute force, number theory

Splitting the Uniqueness

constructive algorithms

Positions in Permutations

combinatorics, dp, math

Good Substrings

hashing, strings

Distance Tree (hard version)

binary search, dfs and similar, shortest paths, trees

Points Movement

data structures, dp, greedy, implementation, sortings

Clusterization Counting

combinatorics, dp, dsu, fft, graphs, trees

Student's Camp

dp, math

Professor's task

data structures, geometry

Velepin and Marketing

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

Recover Polygon (easy)

Colouring Game

constructive algorithms, dp, games

Top-Notch Insertions

combinatorics, data structures

Maximize The Value

data structures, sortings

Game with Cards

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

Pave the Parallelepiped

bitmasks, brute force, combinatorics, math, number theory

Little Elephant and Shifts

data structures

Game of chess unfinished

implementation

Miss Punyverse

dp, greedy, trees

Destroy the Colony

combinatorics, dp, math

Cycling City

dfs and similar, graphs

Comb

data structures, dp

Tenzing and Random Operations

combinatorics, dp, math, probabilities

Similar Polynomials

combinatorics, math