Pokémon Arena

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

Pinball

binary search, data structures, implementation, math, two pointers

Andrey's Tree

binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees

Distance Learning Courses in MAC

bitmasks, brute force, data structures, greedy, math

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Feed Cats

data structures, dp, sortings

LR-remainders

brute force, data structures, implementation, math, two pointers

Prefix Max Set Counting

data structures, dp, trees

Lexicographically Largest

binary search, constructive algorithms, data structures, greedy, sortings

Sasha and the Wedding Binary Search Tree

brute force, combinatorics, data structures, dfs and similar, math, trees

Digital Patterns

combinatorics, data structures, implementation, math

Lonely Mountain Dungeons

brute force, data structures, greedy, math, ternary search

Paint Charges

data structures, dp, greedy, math

Microcycle

data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees

Find the Different Ones!

binary search, brute force, data structures, dp, dsu, greedy, two pointers

Vlad and an Odd Ordering

binary search, bitmasks, data structures, dp, implementation, math, number theory

Space Harbour

data structures, implementation, math, sortings

Count Paths

data structures, dfs and similar, dp, dsu, graphs, trees

Slimes

binary search, constructive algorithms, data structures, greedy, two pointers

Berserk Monsters

brute force, data structures, dsu, implementation, math

Mischievous Shooter

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

Sum of Progression

brute force, data structures, dp, implementation, math

Very Different Array

data structures, greedy, sortings, two pointers

Smooth Sailing (Hard Version)

binary search, data structures, dsu, geometry, graphs, trees

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Wine Factory (Hard Version)

data structures, dp, flows, greedy, matrices

Wine Factory (Easy Version)

data structures, greedy

01 Tree

constructive algorithms, data structures, dsu, greedy, sortings, trees

Grouping Increases

data structures, dp, greedy

Blocking Elements

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

Minimize Inversions

constructive algorithms, data structures, greedy, implementation, sortings

Yet Another Inversions Problem

combinatorics, data structures, dp, implementation, math, number theory

Erase First or Second Letter

brute force, combinatorics, data structures, dp, strings

Happy Life in University

data structures, dfs and similar, greedy, trees

Greetings

data structures, divide and conquer, sortings

Romantic Glasses

data structures, greedy, math

Light Bulbs (Hard Version)

combinatorics, data structures, dfs and similar, dp, graphs, hashing

Palindromic Problem

binary search, data structures, hashing, string suffix structures, strings

Array Collapse

data structures, divide and conquer, dp, trees

Great City Saint Petersburg

data structures

Accumulator Apex

data structures, implementation, sortings

Sum of Digits of Sums

*special problem, binary search, data structures

Parallel Swaps Sort

constructive algorithms, data structures

Heavy Intervals

constructive algorithms, data structures, dsu, greedy, math, sortings

YetnotherrokenKeoard

data structures, implementation, strings

Maximize The Value

data structures, sortings

Field Should Not Be Empty

brute force, data structures, divide and conquer

Cyclic MEX

data structures, implementation, math, two pointers

Beautiful Tree

data structures, dfs and similar, graphs, implementation, trees

Tree Queries

data structures, dfs and similar, graphs, implementation, trees

Set To Max (Hard Version)

constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings

Array Game

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

Babysitting

2-sat, binary search, data structures, graphs, trees

Trees and XOR Queries Again

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

Collapsing Strings

data structures, strings, trees

Robot Queries

binary search, data structures, dp, implementation

Local Deletions

binary search, data structures, implementation

Unusual Entertainment

data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Permutation Sorting

data structures, sortings

Ones and Twos

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

Two Characters, Two Colors

binary search, data structures, dp, flows, greedy

Infinite Card Game

binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers

XOR Construction

bitmasks, constructive algorithms, data structures, math, string suffix structures, trees

Colorful Constructive

constructive algorithms, data structures, greedy

A Growing Tree

data structures, dfs and similar, trees

Doremy's Average Tree

data structures, dp, greedy, trees

Doremy's Drying Plan (Hard Version)

data structures, dp

Doremy's Drying Plan (Easy Version)

brute force, data structures, dp, greedy, sortings

Split

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

Minimum Array

binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers

Diamond Theft

data structures, greedy

Monocarp and the Set

combinatorics, data structures, math

Medium Design

brute force, data structures, dp, greedy, sortings

You Are So Beautiful

data structures

In Love

data structures, greedy

Anya and the Mysterious String

binary search, data structures

Last Man Standing

brute force, data structures, number theory

wxhtzdy ORO Tree

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

Iva & Pav

binary search, bitmasks, data structures, greedy

Reverse Madness

data structures, greedy

Clubstep

binary search, brute force, data structures, greedy, trees

Ball-Stackable

constructive algorithms, data structures, dp, trees

Data Structures Fan

binary search, bitmasks, data structures, dp

Standard Graph Problem

data structures, graphs, greedy, trees

MEXanization

data structures

Colorful Table

binary search, data structures, dp, implementation, math, two pointers

LIS?

data structures, greedy, implementation

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Grouped Carriages

binary search, data structures, dp, flows, greedy

Freak Joker Process

binary search, data structures, sortings

Exotic Queries

data structures, implementation, sortings

Guess Game

bitmasks, data structures, games, math, probabilities, sortings, strings, trees

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

The Great Equalizer

binary search, data structures, math, sortings

Kolya and Movie Theatre

constructive algorithms, data structures, greedy

Flower City Fence

binary search, data structures, implementation, sortings

Queries for the Array

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

Evaluate RBS

data structures, geometry, implementation, math, sortings