Table Tennis

data structures, implementation

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Place for a Selfie

binary search, data structures, geometry, math

Inaccurate Subsequence Search

data structures, two pointers

Eugene and an array

binary search, data structures, implementation, two pointers

Array Destruction

brute force, constructive algorithms, data structures, greedy, implementation, sortings

Constant Palindrome Sum

brute force, data structures, greedy, two pointers

Beautiful Numbers

data structures, implementation, math, two pointers

Minimum Grid Path

brute force, data structures, greedy, math

Game on Permutation

data structures, dp, games, greedy

Stripe

data structures, implementation

Powerful array

data structures, implementation, math, two pointers

Lomsat gelral

data structures, dfs and similar, dsu, trees

Longest Regular Bracket Sequence

constructive algorithms, data structures, dp, greedy, sortings, strings

Knight Tournament

data structures, dsu

Prefix Flip (Hard Version)

constructive algorithms, data structures, implementation, strings, two pointers

Friends and Gifts

constructive algorithms, data structures, math

Bad Sequence

data structures, greedy

Fighting Tournament

binary search, data structures, implementation, two pointers

NEKO's Maze Game

data structures, dsu, implementation

Alternating Current

data structures, greedy, implementation

Integers Shop

data structures, greedy, implementation

Nastya and Strange Generator

brute force, data structures, greedy, implementation

Alice and the Cake

data structures, greedy, implementation, sortings

Number Game

binary search, data structures, games, greedy, implementation

Vika and the Bridge

binary search, data structures, greedy, implementation, math, sortings

LR-remainders

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

Color the Fence

data structures, dp, greedy, implementation

Reading Books (easy version)

data structures, greedy, sortings

Diluc and Kaeya

data structures, dp, hashing, number theory

Sereja and Brackets

data structures, schedules

Prison Transfer

data structures, implementation

Seating Arrangements (easy version)

data structures, greedy, sortings

Air Conditioners

data structures, dp, implementation, shortest paths, sortings, two pointers

Incinerate

binary search, brute force, data structures, implementation, math, sortings

Lunar New Year and a Wander

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

awoo's Favorite Problem

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

Distinct Characters Queries

data structures

Grandma Capa Knits a Scarf

brute force, data structures, greedy, strings, two pointers

Inversion Graph

data structures, dsu, graphs, math

Yet Another Walking Robot

data structures, implementation

Game with string

data structures, implementation, math

Good Subarrays (Easy Version)

binary search, data structures, schedules, two pointers

Balanced Tunnel

data structures, sortings, two pointers

Chat Order

*special problem, binary search, constructive algorithms, data structures, sortings

Wonderful Coloring - 2

binary search, constructive algorithms, data structures, greedy

Watchmen

data structures, geometry, math

Digital Logarithm

data structures, greedy, sortings

Equalize the Array

binary search, data structures, greedy, math, sortings

Journey Planning

data structures, dp, greedy, math, sortings

Non-zero Segments

constructive algorithms, data structures, greedy, sortings

Maximum width

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

Misha and Changing Handles

data structures, dsu, strings

Longest Strike

data structures, greedy, implementation, sortings, two pointers

2^Sort

data structures, dp, sortings, two pointers

Three Sevens

brute force, data structures, greedy, implementation

Orac and LCM

data structures, math, number theory

Berland Regional

brute force, data structures, greedy, number theory, sortings

Greg and Array

data structures, implementation

Minimum Notation

data structures, greedy, math, sortings

Box Fitting

binary search, bitmasks, data structures, greedy

Applejack and Storages

constructive algorithms, data structures, greedy, implementation

Karen and Coffee

binary search, data structures, implementation

Social Network (hard version)

data structures, implementation

Phoenix and Towers

constructive algorithms, data structures, greedy

Grouping Increases

data structures, dp, greedy

2-Letter Strings

data structures, math, strings

Stone Age Problem

data structures, implementation

Mystic Permutation

data structures, greedy

Constructing the Array

constructive algorithms, data structures, sortings

Subtract Operation

data structures, greedy, math, two pointers

Binary String To Subsequences

constructive algorithms, data structures, greedy, implementation

Subsequence Addition (Easy Version)

brute force, data structures, dp, greedy, implementation, sortings

3SUM Closure

brute force, data structures

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Nene's Game

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

Dora and Search

constructive algorithms, data structures, two pointers

Yet Another Problem About Pairs Satisfying an Inequality

binary search, data structures, dp, greedy, sortings

Matryoshkas

data structures, greedy, sortings

Find the Different Ones!

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

Card Deck

data structures, greedy, math

Romantic Glasses

data structures, greedy, math

Accidental Victory

binary search, data structures, greedy

Valerii Against Everyone

constructive algorithms, data structures, greedy, sortings

Binary Inversions

data structures, greedy, math

Lecture Sleep

data structures, dp, implementation, two pointers

Snacktower

data structures, implementation

Erase First or Second Letter

brute force, combinatorics, data structures, dp, strings

Block Towers

data structures, greedy, sortings

Flower City Fence

binary search, data structures, implementation, sortings

ABBB

brute force, data structures, greedy, strings

Prefix Flip (Easy Version)

constructive algorithms, data structures, strings

Very Different Array

data structures, greedy, sortings, two pointers

Hotelier

brute force, data structures, implementation

Delete Two Elements

data structures, dp, implementation, math, two pointers

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Three Parts of the Array

binary search, data structures, two pointers

Polycarp Training

data structures, greedy, sortings

Odd Swap Sort

data structures, math, sortings