Tokitsukaze and Permutations

dp, math

Removing Graph

brute force, dp, games, graphs, math

Zip-line

binary search, data structures, dp, hashing

Abnormal Permutation Pairs (easy version)

combinatorics, dp, fft, math

Vulnerable Kerbals

constructive algorithms, dp, graphs, math, number theory

Digital Wallet

dp, greedy

Party

bitmasks, brute force, dp, graphs

You

dfs and similar, dp, math, number theory

Lucky Numbers

dp, greedy

Doremy's Number Line

dp, greedy, sortings

Beautiful Bracket Sequence (easy version)

combinatorics, dp, probabilities

Cleaning Robot

bitmasks, dp

Emotional Fishermen

combinatorics, dp, math, two pointers

Sports Betting

bitmasks, combinatorics, dp, graphs, math, probabilities

Counting Is Fun (Easy Version)

brute force, combinatorics, dp, math

Museums Tour

dp, graphs, implementation

Non-equal Neighbours

combinatorics, dp, math

Name That Tune

dp, probabilities, two pointers

Free Market

dp, greedy

Replace on Segment

dp, graph matchings

Top Secret Task

dp

Sonya and Informatics

combinatorics, dp, matrices, probabilities

Encryption (medium)

dp

Coloring

brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math

Decreasing Game

constructive algorithms, dfs and similar, dp, greedy, interactive

Up and Down the Tree

dfs and similar, dp, trees

Decomposition

binary search, brute force, data structures, divide and conquer, dp, two pointers

Palindrome Partition

binary search, brute force, data structures, dp, hashing, strings

String Multiplication

dp, greedy, strings

Cowmpany Cowmpensation

combinatorics, dp, math, trees

Alice the Fan

dp

Hyakugoku and Ladders

dp, probabilities, shortest paths

Roads in Yusland

data structures, dp, greedy

Captains Mode

bitmasks, dp, games

Happy New Year

bitmasks, dp, implementation

Bear and Company

dp

Fancy Stack

combinatorics, dp, implementation

Mischievous Shooter

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

Abbreviation

dp, hashing, strings

Typical Party in Dorm

bitmasks, combinatorics, dp, strings

Conveyor

constructive algorithms, dp, math

Valera and Fools

dfs and similar, dp, graphs, shortest paths

Leaf Partition

dp, trees

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

Three Days Grace

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

Controversial Rounds

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

Travel Plan

combinatorics, dp, implementation, math, trees

Sereja and Intervals

combinatorics, dp

Traffic Jams in the Land

data structures, dp, number theory

Beautiful Pairs of Numbers

combinatorics, dp

Levko and Strings

combinatorics, dp

Text Editor

brute force, dp, greedy, strings

Annual Ants' Gathering

dfs and similar, dp, greedy, trees

Transmitting Levels

dp, implementation

Jellyfish and Math

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

Ann and Half-Palindrome

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

Little Artem and Random Variable

dp, implementation, math, probabilities

Bracket Substring

dp, strings

Seller Bob

brute force, dp, greedy

Maximum Questions

data structures, dp, strings

XOR Counting

bitmasks, combinatorics, dp, math

Bandit Blues

combinatorics, dp, fft, math

Axel and Marston in Bitland

bitmasks, dp, graphs, matrices

World Eater Brothers

dfs and similar, dp, greedy, trees

Swap and Maximum Block

bitmasks, data structures, dfs and similar, divide and conquer, dp

Flag 2

dp

Number Transformation

dp, greedy, number theory

TV Game

dp

Sonya and Ice Cream

binary search, data structures, dp, greedy, shortest paths, trees

Gojou and Matrix Game

data structures, dp, games, hashing, implementation, math, number theory, sortings

Hongcow Buys a Deck of Cards

bitmasks, brute force, dp

Labeling the Tree with Distances

data structures, dp, greedy, hashing, implementation, trees

Hiking

binary search, dp

Stranger Trees

dp, math, matrices, trees

Painting The Wall

dp, probabilities

Divide, XOR, and Conquer

bitmasks, dp, math

Bags with Balls

combinatorics, dp, math, number theory

Il Derby della Madonnina

data structures, dp, math

Roads in the Kingdom

dfs and similar, dp, graphs, trees

Vasya and Maximum Profit

binary search, constructive algorithms, data structures, dp, dsu

Bulbo

dp, greedy

Nauuo and Pictures (easy version)

dp, probabilities

Bath Queue

combinatorics, dp, probabilities

Beavermuncher-0xFF

dfs and similar, dp, dsu, greedy, trees

Good Contest

combinatorics, dp, probabilities

Independent Set

dfs and similar, dp, trees

Runner's Problem

dp, matrices, sortings

Bacterial Melee

brute force, combinatorics, dp, string suffix structures

Summoning Minions

constructive algorithms, dp, flows, graph matchings, greedy, sortings

Maximum Element

combinatorics, dp, math

Cats on the Upgrade (easy version)

brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees

Vasya and Array

dp

Game with Powers

dp, games

Famil Door and Roads

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

2..3...4.... Wonderful! Wonderful!

combinatorics, dp, math

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Mathematics Curriculum

brute force, combinatorics, dp, trees

Omkar and Last Floor

dp, greedy, two pointers