Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Valeriy and Deque

data structures, implementation

The Awesomest Vertex

data structures, dfs and similar

Yet Another Partiton Problem

data structures, divide and conquer, dp, geometry, two pointers

The Number of Subpermutations

brute force, data structures, divide and conquer, hashing, math

Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Catch Overflow!

data structures, expression parsing, implementation

Nauuo and Bug

data structures

Nauuo and ODT

data structures

Decoding of Integer Sequences

*special problem, data structures, implementation

Scalar Queries

combinatorics, data structures, math, sortings

Range Deleting

binary search, combinatorics, data structures, two pointers

Vicky's Delivery Service

data structures, dsu, graphs, hashing

Polycarp Training

data structures, greedy, sortings

Indecisive Taxi Fee

data structures, graphs, shortest paths

Magical Permutation

bitmasks, brute force, constructive algorithms, data structures, graphs, math

Power Transmission (Hard Edition)

data structures, geometry, implementation, math

Cat Party (Hard Edition)

data structures, implementation

Cat Party (Easy Edition)

data structures, implementation

Permutation recovery

constructive algorithms, data structures, dfs and similar, graphs, greedy, math, sortings

Minimum Array

binary search, data structures, greedy

Special Segments of Permutation

data structures, divide and conquer, dsu, two pointers

Beautiful Array

brute force, data structures, divide and conquer, dp, greedy

Two Teams

data structures, implementation, sortings

Number of Components

combinatorics, data structures, dp, math

Tree Generator™

data structures, implementation, trees

Holy Diver

data structures

Hot is Cold

bitmasks, data structures, divide and conquer, implementation

Lynyrd Skynyrd

data structures, dfs and similar, dp, math, trees

Same Sum Blocks (Hard)

data structures, greedy

Double Tree

data structures, divide and conquer, shortest paths, trees

Extending Set of Points

data structures, divide and conquer, dsu

Playlist

brute force, data structures, sortings

Dish Shopping

data structures, divide and conquer

Matches Are Not a Child's Play

data structures, trees

Train Car Selection

data structures, greedy

Nastya Hasn't Written a Legend

binary search, data structures

Greedy Subsequences

data structures, dp, trees

Most Dangerous Shark

data structures, dp, two pointers

Isolation

data structures, dp

Morse Code

binary search, data structures, dp, hashing, sortings, string suffix structures, strings

Secret Letters

data structures, dp, greedy

Niyaz and Small Degrees

data structures, dp, trees

Recursive Queries

data structures

Please, another Queries on Array?

bitmasks, data structures, divide and conquer, math, number theory

Tree

data structures, dfs and similar, dp, graphs, trees

Nearest Leaf

data structures, trees

Sasha and Algorithm of Silence's Sounds

data structures, trees

Sasha and a Very Easy Test

data structures, number theory

Sasha and a Patient Friend

binary search, data structures, implementation

Array and Segments (Hard version)

data structures, implementation

Vasya and Maximum Profit

binary search, constructive algorithms, data structures, dp, dsu

Lunar New Year and Red Envelopes

data structures, dp

Lunar New Year and a Wander

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

Lunar New Year and Food Ordering

data structures, implementation

Game with string

data structures, implementation, math

GCD Counting

data structures, dfs and similar, dp, number theory, trees

Ivan and Burgers

data structures, divide and conquer, greedy, math

Build a Contest

data structures, implementation

Cookies

binary search, data structures, dfs and similar, dp, games, trees

Eels

data structures

Multidimensional Queries

bitmasks, data structures

Intersection of Permutations

data structures

Great Vova Wall (Version 2)

data structures, implementation

New Year and the Acquaintance Estimation

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

New Year Presents

constructive algorithms, data structures

King Kog's Reception

data structures

Ehab and a weird weight formula

data structures, trees

Beautiful Matrix

combinatorics, data structures, dp

The Fair Nut and Amusing Xor

data structures

The Fair Nut and Rectangles

data structures, dp, geometry

The Fair Nut's getting crazy

data structures, implementation

Max Mex

data structures, trees

The Fair Nut and the Best Path

data structures, dp, trees

Palindromic Magic

data structures, hashing, strings

Katya and Segments Sets

data structures, interactive, sortings

Pictures with Kittens (hard version)

data structures, dp

Array Game

data structures, games

Vasya and a Tree

data structures, trees

Yet Another LCP Problem

data structures, string suffix structures

Berland Fair

binary search, brute force, data structures, greedy

Getting Deals Done

binary search, data structures

Cloud Computing

data structures, greedy

Berkomnadzor

data structures, greedy

Binary Numbers AND Sum

data structures, implementation, math

String Journey

data structures, dp, string suffix structures

Company

binary search, data structures, dfs and similar, greedy, trees

TV Shows

data structures, greedy, implementation, sortings

Multiplicity

data structures, dp, implementation, math, number theory

Balls and Pockets

data structures

Split the Tree

binary search, data structures, dp, greedy, trees

Detect Robots

data structures, strings

Take Metro

brute force, data structures, graphs

Check Transcription

brute force, data structures, hashing, strings

Distinctification

data structures, dsu, greedy

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Moonwalk challenge

data structures, strings, trees

AI robots

data structures

Last chance

data structures, flows, graph matchings, graphs, trees

DFS

data structures