Good Subarrays (Easy Version)

binary search, data structures, schedules, two pointers

Game with string

data structures, implementation, math

Yet Another Walking Robot

data structures, implementation

Grandma Capa Knits a Scarf

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

Inversion Graph

data structures, dsu, graphs, math

Distinct Characters Queries

data structures

awoo's Favorite Problem

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

Lunar New Year and a Wander

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

Incinerate

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

Air Conditioners

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

Seating Arrangements (easy version)

data structures, greedy, sortings

Prison Transfer

data structures, implementation

LR-remainders

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

Sereja and Brackets

data structures, schedules

Diluc and Kaeya

data structures, dp, hashing, number theory

Reading Books (easy version)

data structures, greedy, sortings

Color the Fence

data structures, dp, greedy, implementation

Vika and the Bridge

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

Number Game

binary search, data structures, games, greedy, implementation

Alice and the Cake

data structures, greedy, implementation, sortings

Nastya and Strange Generator

brute force, data structures, greedy, implementation

Integers Shop

data structures, greedy, implementation

Alternating Current

data structures, greedy, implementation

NEKO's Maze Game

data structures, dsu, implementation

Fighting Tournament

binary search, data structures, implementation, two pointers

Bad Sequence

data structures, greedy

Friends and Gifts

constructive algorithms, data structures, math

Knight Tournament

data structures, dsu

Prefix Flip (Hard Version)

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

Inaccurate Subsequence Search

data structures, two pointers

Longest Regular Bracket Sequence

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

Lomsat gelral

data structures, dfs and similar, dsu, trees

Powerful array

data structures, implementation, math, two pointers

Stripe

data structures, implementation

Game on Permutation

data structures, dp, games, greedy

Minimum Grid Path

brute force, data structures, greedy, math

Beautiful Numbers

data structures, implementation, math, two pointers

Array Destruction

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

Constant Palindrome Sum

brute force, data structures, greedy, two pointers

Eugene and an array

binary search, data structures, implementation, two pointers

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

Place for a Selfie

binary search, data structures, geometry, math

Data Structures Fan

binary search, bitmasks, data structures, dp

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Battle Cows

binary search, data structures, greedy

Table Tennis

data structures, implementation

Least Prefix Sum

data structures, greedy

Weird Sum

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

k-Amazing Numbers

binary search, data structures, implementation, two pointers

Gardener and Tree

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

Greetings

data structures, divide and conquer, sortings

Cells Not Under Attack

data structures, math

Range Update Point Query

binary search, brute force, data structures

Modulo Sum

combinatorics, data structures, dp, two pointers

Tea Tasting

binary search, data structures, implementation

Stack of Presents

data structures, implementation

Recent Actions

data structures, greedy, implementation, math

MEX maximizing

data structures, greedy, implementation, math

Powers of Two

brute force, data structures, implementation, math

The Morning Star

combinatorics, data structures, geometry, implementation, math, sortings

Iva & Pav

binary search, bitmasks, data structures, greedy

To Become Max

binary search, brute force, data structures, dp

Tracking Segments

binary search, brute force, data structures, two pointers

PolandBall and Game

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

Build a Contest

data structures, implementation

13th Labour of Heracles

data structures, greedy, sortings, trees

Colorful Table

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

Monsters And Spells

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

Array Game

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

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

New Year and Ascent Sequence

binary search, combinatorics, data structures, dp, implementation, sortings

Salyg1n and the MEX Game

constructive algorithms, data structures, games, greedy, interactive

Fault-tolerant Network

brute force, data structures, implementation

Helping the Nature

constructive algorithms, data structures, greedy

Three Blocks Palindrome (easy version)

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

Zero-Sum Prefixes

brute force, data structures, dp, greedy, implementation

Sum and Product

binary search, data structures, math

Zero Path

brute force, data structures, dp, graphs, greedy, shortest paths

Candies!

data structures, dp, implementation, math

Almost Increasing Subsequence

binary search, data structures, greedy

Good Substrings

data structures, strings

Catch Overflow!

data structures, expression parsing, implementation

Valeriy and Deque

data structures, implementation

Skyscrapers (easy version)

brute force, data structures, dp, greedy

Enemy is weak

data structures, trees

Counting Rectangles

brute force, data structures, dp, implementation

Maximum Crossings (Hard Version)

data structures, divide and conquer, sortings

Vlad and an Odd Ordering

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

In Love

data structures, greedy

Heavy Intervals

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

Rooks Defenders

data structures, implementation

Binary String Copying

binary search, brute force, data structures, hashing, strings

Zigzags

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

Kolya and Movie Theatre

constructive algorithms, data structures, greedy

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Pashmak and Parmida's problem

data structures, divide and conquer, sortings

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Queries for the Array

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

Little Elephant and Array

constructive algorithms, data structures

Hits Different

data structures, dp, implementation, math