Fruit Sequences

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

Carrots for Rabbits

binary search, data structures, greedy, math, sortings

String Reversal

data structures, greedy, strings

String Deletion

binary search, data structures, greedy, two pointers

Numbers on Whiteboard

constructive algorithms, data structures, greedy, implementation, math

Boring Card Game

data structures, greedy, trees

Years

data structures, sortings

Virus

data structures, divide and conquer, dsu, graphs

Growing flowers

data structures

Boring Queries

data structures, math, number theory

Rainbow Triples

binary search, data structures, flows, greedy

Avoid Rainbow Cycles

data structures, dsu, graphs, greedy, sortings, trees

Searchlights

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

Non-zero Segments

constructive algorithms, data structures, greedy, sortings

Split

binary search, data structures, dp, greedy

Graph and Queries

data structures, dsu, graphs, implementation, trees

XOR Inverse

bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees

k-Amazing Numbers

binary search, data structures, implementation, two pointers

Impressive Harvesting of The Orchard

data structures

Rescue Nibel!

combinatorics, data structures, sortings

Pokémon Army (hard version)

data structures, divide and conquer, dp, greedy, implementation

Rain of Fire

binary search, data structures, dfs and similar, dsu, graphs, implementation

Three Occurrences

data structures, divide and conquer, hashing, two pointers

Equal Product

data structures, math, number theory, two pointers

Trash Problem

data structures, implementation

Three Sequences

constructive algorithms, data structures, greedy, math

Discrete Centrifugal Jumps

data structures, dp, graphs

Fixed Point Removal

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

Rainbow Rectangles

data structures, sortings, two pointers

Spring cleaning

*special problem, data structures, dfs and similar, graphs, trees

The Potion of Great Power

*special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers

Fancy Fence

*special problem, data structures, dsu, implementation, math, sortings

Clear the Multiset

data structures, divide and conquer, dp, greedy

Zigzags

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

Reverse and Swap

binary search, bitmasks, data structures

Divide Square

data structures, geometry, implementation, sortings

Omkar and Landslide

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

Controversial Rounds

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

Two Types of Spells

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

Good Subarrays

data structures, dp, math

Applejack and Storages

constructive algorithms, data structures, greedy, implementation

Yet Another Segments Subset

data structures, dp, graphs, sortings

Weights Division (easy version)

data structures, dfs and similar, greedy, trees

Binary String To Subsequences

constructive algorithms, data structures, greedy, implementation

Uncle Bogdan and Projections

data structures, geometry, sortings

Captain Flint and Treasure

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

Bicolored Segments

data structures, dp, graph matchings, sortings

Strange Operation

combinatorics, data structures, dp

Joker

*special problem, bitmasks, data structures, divide and conquer, dsu

Mixture

*special problem, data structures, geometry, math, sortings

Chess Strikes Back (hard version)

data structures, divide and conquer

Chess Strikes Back (easy version)

binary search, data structures

New Passenger Trams

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

Choosing flowers

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

Removing Leaves

data structures, greedy, implementation, trees

Prefix Flip (Hard Version)

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

Prefix Flip (Easy Version)

constructive algorithms, data structures, strings

Strange Addition

data structures, dp, matrices

Merging Towers

data structures, dsu, implementation, trees

Three Indices

brute force, data structures

Element Extermination

constructive algorithms, data structures, greedy

Reading Books (hard version)

data structures, greedy, implementation, sortings, ternary search, two pointers

Reading Books (easy version)

data structures, greedy, sortings

Raging Thunder

data structures, divide and conquer, implementation

Pawns

data structures, divide and conquer, greedy

Network Coverage

binary search, constructive algorithms, data structures, greedy

Binary Subsequence Rotation

binary search, constructive algorithms, data structures, greedy

Shifting Dominoes

data structures, geometry, graphs, trees

DeadLee

data structures, dfs and similar, greedy, implementation, sortings

Flying Sort (Hard Version)

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

XXXXX

brute force, data structures, number theory, two pointers

Construct the String

data structures, dp, strings

Rotation Matching

constructive algorithms, data structures, greedy, implementation

Johnny and New Toy

data structures, implementation, math

Game with Segments

*special problem, data structures, games

Dune II: Battle For Arrakis

*special problem, data structures, greedy, math

RC Kaboom Show

binary search, brute force, data structures, geometry, math

Yet Another Yet Another Task

data structures, dp, implementation, two pointers

Are You Fired?

constructive algorithms, data structures, greedy, implementation

Multiset

binary search, data structures

Constructing the Array

constructive algorithms, data structures, sortings

Orac and LCM

data structures, math, number theory

Skier

data structures, implementation

Phoenix and Memory

data structures, dfs and similar, graphs, greedy

Phoenix and Beauty

constructive algorithms, data structures, greedy, sortings

Multiple Testcases

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

Train Tracks

data structures, trees

Restore the Permutation by Sorted Segments

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

Constant Palindrome Sum

brute force, data structures, greedy, two pointers

Nastya and CBS

brute force, data structures, hashing

Nastya and Strange Generator

brute force, data structures, greedy, implementation

Journey

data structures, divide and conquer, graphs, trees

Robots on a Grid

data structures, dfs and similar, dsu, graphs, greedy, matrices

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Three Blocks Palindrome (easy version)

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

Strange Function

binary search, data structures, dp, greedy

Eugene and an array

binary search, data structures, implementation, two pointers

Dreamoon Likes Strings

constructive algorithms, data structures

Drazil Likes Heap

constructive algorithms, data structures, greedy, implementation

No Monotone Triples

data structures