Doremy's Average Tree

data structures, dp, greedy, trees

LIS?

data structures, greedy, implementation

Min-Sum-Max

constructive algorithms, dp, greedy

Standard Graph Problem

data structures, graphs, greedy, trees

Slime and Hats

constructive algorithms, dp, greedy

Future Dominators

graphs, greedy

Permutation Weight (Hard Version)

constructive algorithms, greedy

Copium Permutation

constructive algorithms, data structures, greedy

Tenzing and Necklace

divide and conquer, dp, greedy

Kuroni the Private Tutor

binary search, greedy

Clubstep

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

Balanced Distribution

data structures, dp, greedy

The Ultimate LIS Problem

data structures, greedy

Maximum Product?

brute force, combinatorics, dp, greedy, implementation, math, two pointers

Become Big For Me

combinatorics, constructive algorithms, greedy, math, number theory

XOR-ranges

dp, greedy

Minimize Inversions Number

data structures, greedy, math, sortings

Rin and The Unknown Flower

constructive algorithms, greedy, interactive, math

Rivalries

constructive algorithms, data structures, greedy

Half-sum

brute force, divide and conquer, greedy

I Might Be Wrong

binary search, greedy, two pointers

Gregor and the Two Painters

data structures, divide and conquer, graphs, greedy, math

Bus Routes

binary search, constructive algorithms, dfs and similar, greedy, trees

Outermost Maximums

data structures, greedy

Egor and an RPG game

constructive algorithms, greedy

Nezzar and Tournaments

data structures, greedy

Tanya is 5!

graph matchings, graphs, greedy, schedules

Moving Walkways

data structures, greedy, math

Diamond Theft

data structures, greedy

Dreamoon Loves AA

binary search, greedy

MEX Game 2 (Hard Version)

binary search, greedy, two pointers

New Road Network

constructive algorithms, greedy, math

Finding satisfactory solutions

combinatorics, dp, graphs, greedy, math

A Certain Magical Party

combinatorics, data structures, greedy, sortings

Permutation for Burenka

data structures, graph matchings, greedy, math, trees

N Machines

binary search, brute force, greedy

DIY Tree

graphs, greedy, math, probabilities

Breadboard Capacity (easy version)

dp, flows, greedy

Rainbow Triples

binary search, data structures, flows, greedy

Showing Off

flows, graph matchings, greedy, implementation

AmShZ Wins a Bet

data structures, greedy, hashing

Organizing a Race

data structures, greedy

Spiders Evil Plan

greedy, trees

Growing Trees

binary search, constructive algorithms, flows, graphs, greedy

An easy problem about trees

dp, games, greedy, trees

JS Minification

greedy, implementation

Four Suits

binary search, bitmasks, flows, greedy

Thanos Snap

binary search, dp, games, greedy, trees

Two Posters

brute force, data structures, greedy, two pointers

Split

binary search, data structures, dp, greedy

Boring Card Game

data structures, greedy, trees

Qingshan and Daniel

brute force, data structures, greedy, implementation

Clockwork Bomb

data structures, dfs and similar, dsu, greedy, trees

Summer Dichotomy

2-sat, data structures, dfs and similar, greedy

Bear and Bowling

data structures, greedy

Show Must Go On

binary search, brute force, greedy, shortest paths

To Hack or not to Hack

brute force, dp, greedy

Two Characters, Two Colors

binary search, data structures, dp, flows, greedy

Tokitsukaze and Explosion

binary search, greedy

Secret Letters

data structures, dp, greedy

Survival of the Weakest (hard version)

greedy, math, sortings, two pointers

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Computer Game

dp, greedy, math, probabilities

Madoka and Laziness

dp, greedy

Fishermen

flows, graph matchings, greedy

Squid Game

data structures, dfs and similar, greedy, trees

Bitwise Paradox

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

Huffman Coding on Segment

data structures, greedy

AB Tree

dp, greedy, trees

Raffles

data structures, dp, greedy, math

To Make 1

bitmasks, constructive algorithms, dp, greedy, number theory

Captain America

flows, greedy

Flip and Reverse

data structures, graphs, greedy

To Play or not to Play

greedy

PermutationForces

data structures, greedy

Wizards and Roads

data structures, divide and conquer, graph matchings, graphs, greedy

Flower-like Pseudotree

constructive algorithms, graphs, greedy, implementation, trees

A Story of One Country (Hard)

brute force, greedy, sortings

The Thorny Path

greedy, math

World of Tank

dp, greedy

Parmigiana With Seafood

binary search, dp, greedy, trees

Berland Miners

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

A Stroll Around the Matrix

data structures, greedy, math

Game Bundles

brute force, constructive algorithms, dp, greedy, math

Candies Game

constructive algorithms, greedy

Down Below

binary search, dfs and similar, graphs, greedy, meet-in-the-middle, shortest paths

Bear and Rectangle Strips

dp, greedy

The Majestic Brown Tree Snake

dfs and similar, dp, greedy, trees, two pointers

Birthday

constructive algorithms, greedy, math

Buy One, Get One Free

dp, greedy

Falling Sand (Hard Version)

dfs and similar, dp, graphs, greedy

Black, White and Grey Tree

binary search, constructive algorithms, dfs and similar, dp, greedy, trees

Lucky Numbers (Hard Version)

dp, greedy

Abandoning Roads

brute force, dp, graphs, greedy

Frequency Problem (Hard Version)

data structures, greedy, two pointers

Heaven Tour

data structures, greedy

Fire and Ice

greedy

Candy Shop

greedy

Late For Work (submissions are not allowed)

data structures, greedy, schedules, shortest paths

Restore the Tree

graphs, greedy, trees