Cells Not Under Attack

data structures, math

Greetings

data structures, divide and conquer, sortings

Gardener and Tree

brute force, data structures, dfs and similar, greedy, implementation, trees

k-Amazing Numbers

binary search, data structures, implementation, two pointers

Weird Sum

combinatorics, data structures, geometry, math, matrices, sortings

Least Prefix Sum

data structures, greedy

Table Tennis

data structures, implementation

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Battle Cows

binary search, data structures, greedy

Place for a Selfie

binary search, data structures, geometry, math

Data Structures Fan

binary search, bitmasks, data structures, dp

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

Eugene and an array

binary search, data structures, implementation, two pointers

Constant Palindrome Sum

brute force, data structures, greedy, two pointers

Array Destruction

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

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

Longest Regular Bracket Sequence

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

Lomsat gelral

data structures, dfs and similar, dsu, trees

Prefix Flip (Hard Version)

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

Inaccurate Subsequence Search

data structures, two pointers

Knight Tournament

data structures, dsu

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

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

LR-remainders

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

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

Inversion Graph

data structures, dsu, graphs, math

Grandma Capa Knits a Scarf

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

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

Wonderful Coloring - 2

binary search, constructive algorithms, data structures, greedy

Watchmen

data structures, geometry, math

Chat Order

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

Digital Logarithm

data structures, greedy, sortings

Journey Planning

data structures, dp, greedy, math, sortings

Non-zero Segments

constructive algorithms, data structures, greedy, sortings

Equalize the Array

binary search, data structures, greedy, math, 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

Three Sevens

brute force, data structures, greedy, implementation

Orac and LCM

data structures, math, number theory

2^Sort

data structures, dp, sortings, two pointers

Berland Regional

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

Minimum Notation

data structures, greedy, math, sortings

Greg and Array

data structures, implementation

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

Card Deck

data structures, greedy, math

Dora and Search

constructive algorithms, data structures, two pointers

Matryoshkas

data structures, greedy, sortings

Yet Another Problem About Pairs Satisfying an Inequality

binary search, data structures, dp, greedy, sortings

Find the Different Ones!

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

Accidental Victory

binary search, data structures, greedy

Valerii Against Everyone

constructive algorithms, data structures, greedy, sortings

Romantic Glasses

data structures, greedy, math

Nene's Game

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

Lecture Sleep

data structures, dp, implementation, two pointers

Binary Inversions

data structures, greedy, math

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