Array Game

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

Iva & Pav

binary search, bitmasks, data structures, greedy

Stack of Presents

data structures, implementation

Weird Sum

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

Place for a Selfie

binary search, data structures, geometry, math

Game on Permutation

data structures, dp, games, greedy

Fighting Tournament

binary search, data structures, implementation, two pointers

NEKO's Maze Game

data structures, dsu, implementation

Inaccurate Subsequence Search

data structures, two pointers

Alice and the Cake

data structures, greedy, implementation, sortings

Number Game

binary search, data structures, games, greedy, implementation

LR-remainders

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

awoo's Favorite Problem

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

Watchmen

data structures, geometry, math

Wonderful Coloring - 2

binary search, constructive algorithms, data structures, greedy

Digital Logarithm

data structures, greedy, sortings

Journey Planning

data structures, dp, greedy, math, sortings

Berland Regional

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

2^Sort

data structures, dp, sortings, two pointers

Greg and Array

data structures, implementation

Applejack and Storages

constructive algorithms, data structures, greedy, implementation

Karen and Coffee

binary search, data structures, implementation

Phoenix and Towers

constructive algorithms, data structures, greedy

Grouping Increases

data structures, dp, greedy

Accidental Victory

binary search, data structures, greedy

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Element Extermination

constructive algorithms, data structures, greedy

Epic Transformation

constructive algorithms, data structures, greedy

Rotation Matching

constructive algorithms, data structures, greedy, implementation

Phoenix and Beauty

constructive algorithms, data structures, greedy, sortings

Pair of Topics

binary search, data structures, sortings, two pointers

After Training

data structures, implementation, math

Years

data structures, sortings

Cosmic Tables

data structures, implementation

Average Sleep Time

data structures, implementation, math

Order Book

data structures, greedy, implementation, sortings

Recursive Queries

binary search, data structures, dfs and similar

Bus of Characters

data structures, greedy, implementation

Game of Credit Cards

data structures, dp, greedy, sortings

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Colorful Table

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

Build a Contest

data structures, implementation

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

Beautiful Numbers

data structures, implementation, math, two pointers

Inversion Graph

data structures, dsu, graphs, math

Good Subarrays (Easy Version)

binary search, data structures, schedules, two pointers

Balanced Tunnel

data structures, sortings, two pointers

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Box Fitting

binary search, bitmasks, data structures, greedy

Social Network (hard version)

data structures, implementation

3SUM Closure

brute force, data structures

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

Romantic Glasses

data structures, greedy, math

Prefix Flip (Easy Version)

constructive algorithms, data structures, strings

Number of Pairs

binary search, data structures, math, two pointers

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Registration System

data structures, hashing, implementation

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

Cells Not Under Attack

data structures, math

Table Tennis

data structures, implementation

Battle Cows

binary search, data structures, greedy

Stripe

data structures, implementation

Bad Sequence

data structures, greedy

Vika and the Bridge

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

Incinerate

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

Game with string

data structures, implementation, math

Grandma Capa Knits a Scarf

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

Chat Order

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

Minimum Notation

data structures, greedy, math, sortings

2-Letter Strings

data structures, math, strings

Stone Age Problem

data structures, implementation

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Dora and Search

constructive algorithms, data structures, two pointers

Matryoshkas

data structures, greedy, sortings

Lecture Sleep

data structures, dp, implementation, two pointers

Delete Two Elements

data structures, dp, implementation, math, two pointers

Three Parts of the Array

binary search, data structures, two pointers

Corrupted Array

constructive algorithms, data structures, greedy

Remove Two Letters

data structures, greedy, hashing, strings

XXXXX

brute force, data structures, number theory, two pointers

Same Differences

data structures, hashing, math

Another Sorting Problem

data structures, sortings, strings

The Festive Evening

data structures, implementation

Photo to Remember

*special problem, data structures, dp, implementation

PolandBall and Game

binary search, data structures, games, greedy, sortings, strings

Prison Transfer

data structures, implementation

Seating Arrangements (easy version)

data structures, greedy, sortings

Misha and Changing Handles

data structures, dsu, strings

Subtract Operation

data structures, greedy, math, two pointers

Subsequence Addition (Easy Version)

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

Card Deck

data structures, greedy, math

Snacktower

data structures, implementation

Binary Inversions

data structures, greedy, math

Erase First or Second Letter

brute force, combinatorics, data structures, dp, strings

ABBB

brute force, data structures, greedy, strings

Flower City Fence

binary search, data structures, implementation, sortings

Very Different Array

data structures, greedy, sortings, two pointers

Odd Swap Sort

data structures, math, sortings