Please, another Queries on Array?

bitmasks, data structures, divide and conquer, math, number theory

GCD Counting

divide and conquer, dp, dsu, number theory, trees

Long Way Home

data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths

Vika and Wiki

binary search, bitmasks, combinatorics, divide and conquer, dp, math

Ehab and the Big Finale

constructive algorithms, divide and conquer, graphs, implementation, interactive, trees

Palindromes in a Tree

bitmasks, data structures, divide and conquer, trees

Lucky Tickets

divide and conquer, dp, fft

Bracket Cost

binary search, data structures, divide and conquer, dp, greedy, strings

Permutation and Queries

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

Magic Matrix

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

Trees and XOR Queries Again

data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees

Hot is Cold

bitmasks, data structures, divide and conquer, implementation

Comfortably Numb

bitmasks, data structures, divide and conquer, strings, trees

Anti-Theft Road Planning

bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math

Abracadabra

divide and conquer

Xor Spanning Tree

divide and conquer, fft, graphs

Yet Another Minimization Problem

divide and conquer, dp

Ivan and Burgers

data structures, divide and conquer, greedy, math

Partition Game

binary search, data structures, divide and conquer, dp

The Number of Subpermutations

brute force, data structures, divide and conquer, hashing, math

Bear and Bowling 4

binary search, data structures, divide and conquer, geometry, ternary search

Three Occurrences

data structures, divide and conquer, hashing, two pointers

Ray in the tube

data structures, divide and conquer, dp, math

MinimizOR

bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers

Yurii Can Do Everything

binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers

Defender of Childhood Dreams

bitmasks, constructive algorithms, divide and conquer

Swap and Maximum Block

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

Cats on the Upgrade (easy version)

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

Lena and Queries

data structures, divide and conquer, geometry

Zeros and Ones

bitmasks, divide and conquer, dp, math

Maximum And Queries (hard version)

bitmasks, divide and conquer, dp, greedy

Minibuses on Venus (medium version)

combinatorics, divide and conquer, dp, matrices

Vus the Cossack and a Field

divide and conquer, implementation, math

Virus

data structures, divide and conquer, dsu, graphs

Candies and Stones

divide and conquer, dp

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Half-decay tree

data structures, divide and conquer, dp, math, probabilities

Dish Shopping

data structures, divide and conquer

Product Tuples

divide and conquer, fft

SmartGarden

constructive algorithms, divide and conquer

Not Quick Transformation

divide and conquer, math

Deck-Building Game

divide and conquer, math

Ciel and Gondolas

data structures, divide and conquer, dp

Stack Exterminable Arrays

data structures, divide and conquer, dp, hashing

Binary Table

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

Greedy Shopping

binary search, data structures, divide and conquer, greedy, implementation

New Year and Old Subsequence

data structures, divide and conquer, dp, matrices

Rebrending

brute force, data structures, divide and conquer, implementation

Goodbye Souvenir

data structures, divide and conquer

Extending Set of Points

data structures, divide and conquer, dsu

Sum the Fibonacci

bitmasks, divide and conquer, dp, fft, math

Song of the Sirens

combinatorics, divide and conquer, hashing, math, string suffix structures, strings

Pawns

data structures, divide and conquer, greedy

Vova Escapes the Matrix

brute force, dfs and similar, divide and conquer, shortest paths

Find a car

combinatorics, divide and conquer, dp

Sonya and Bitwise OR

bitmasks, data structures, divide and conquer

Tree Coloring

combinatorics, divide and conquer, fft

Lenient Vertex Cover

dfs and similar, divide and conquer, dsu, graphs, trees

Divisor Set

divide and conquer, fft, greedy, math, number theory

Forced Online Queries Problem

data structures, divide and conquer, dsu, graphs, trees

Field Should Not Be Empty

brute force, data structures, divide and conquer

Formurosa

divide and conquer, dp, expression parsing

Doe Graphs

constructive algorithms, divide and conquer, dp, graphs, shortest paths

Blue and Red of Our Faculty!

divide and conquer, dp

Vowels

combinatorics, divide and conquer, dp

Digit Tree

dfs and similar, divide and conquer, dsu, trees

Permutation

data structures, divide and conquer, hashing

Close Vertices

data structures, divide and conquer, trees

X-OR

bitmasks, constructive algorithms, divide and conquer, interactive, probabilities

Approximate Diameter

binary search, divide and conquer, graphs, shortest paths

Split

binary search, data structures, divide and conquer, dsu, math, trees, two pointers

Sum of Prefix Sums

data structures, divide and conquer, geometry, trees

New Year Shopping

divide and conquer, dp

XOR Partition

binary search, bitmasks, data structures, divide and conquer, greedy, trees

Jumping Around

binary search, data structures, divide and conquer, dp, dsu, graphs, shortest paths

Number Clicker

divide and conquer, graphs, meet-in-the-middle, number theory

Maximums and Minimums

combinatorics, data structures, divide and conquer, number theory

Communication Towers

brute force, divide and conquer, dsu

Double Tree

data structures, divide and conquer, shortest paths, trees

Omkar and Modes

binary search, divide and conquer, interactive

The Final Pursuit

bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math

Kingdom and its Cities

dfs and similar, divide and conquer, dp, graphs, sortings, trees

Sum

data structures, divide and conquer, dp, greedy

Minimal String Xoration

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

Yura and Developers

data structures, divide and conquer

Serious Business

data structures, divide and conquer, dp, implementation, shortest paths

Decinc Dividing

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

Interesting Sections

data structures, divide and conquer, meet-in-the-middle, two pointers

Jellyfish and Miku

divide and conquer, dp, math, probabilities

Parking Lot

data structures, divide and conquer

Battalion Strength

data structures, divide and conquer, probabilities

Travelling Through the Snow Queen's Kingdom

bitmasks, brute force, divide and conquer, graphs

Raging Thunder

data structures, divide and conquer, implementation

Chess Strikes Back (hard version)

data structures, divide and conquer

Joker

*special problem, bitmasks, data structures, divide and conquer, dsu

Sherlock's bet to Moriarty

constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation, trees

Weighed Tree Radius

data structures, divide and conquer, implementation, trees

Nikita and game

binary search, dfs and similar, divide and conquer, graphs, trees

Inverse Genealogy

constructive algorithms, divide and conquer, dp, math, trees

Random Elections

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