Bear and Contribution

data structures, greedy, sortings, two pointers

Dating

greedy, sortings, trees

Caterpillar on a Tree

dfs and similar, graphs, greedy, implementation, sortings, trees

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Halve or Subtract

binary search, brute force, dp, greedy, sortings

Library game

games, greedy, interactive, sortings

Paint Tree

constructive algorithms, divide and conquer, geometry, sortings, trees

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Vasya and Endless Credits

dp, flows, graph matchings, graphs, sortings

Map

data structures, implementation, sortings

Parade

data structures, sortings

Help, what does it mean to be "Based"

brute force, constructive algorithms, expression parsing, implementation, sortings

Geometers Anonymous Club

data structures, geometry, math, sortings

Drone Photo

combinatorics, math, sortings

Wilbur and Trees

dp, math, probabilities, sortings

Katya and Segments Sets

data structures, interactive, sortings

Castle

dp, greedy, probabilities, sortings, trees

Volcanoes

binary search, implementation, sortings, two pointers

Rearrange

brute force, constructive algorithms, graphs, greedy, sortings

Large Triangle

binary search, geometry, sortings

Lucky Sorting

constructive algorithms, sortings

Baby Ehab's Hyper Apartment

binary search, graphs, interactive, sortings, two pointers

Spring Cleaning

*special problem, greedy, sortings

Teams Forming

*special problem, sortings

Four Divisors

data structures, dp, math, number theory, sortings, two pointers

Buses and People

binary search, data structures, sortings

Moon Craters

dp, sortings

Bear and Paradox

binary search, greedy, math, sortings

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

Unordered Swaps

constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees

Lucky Tickets

binary search, data structures, sortings, two pointers

Renovation

constructive algorithms, greedy, sortings

M-tree

data structures, math, sortings, trees

Conveyor

sortings, two pointers

Camping Groups

data structures, sortings

Swap Pass

constructive algorithms, geometry, sortings

Minimum Difference

data structures, hashing, sortings, two pointers

A New Beginning

data structures, dp, geometry, sortings

Printer

binary search, data structures, implementation, sortings

Petya and Tree

binary search, dfs and similar, probabilities, sortings, trees

Ancient Language

graphs, sortings

Place Your Ad Here

data structures, sortings

Sereja and Straight Lines

binary search, data structures, geometry, sortings, two pointers

Perun, Ult!

brute force, greedy, sortings

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Bug in Code

binary search, data structures, sortings

Need For Brake

binary search, greedy, sortings

Ice Cream

*special problem, greedy, sortings

Kay and Eternity

brute force, implementation, sortings

Monocarp and a Strategic Game

geometry, sortings, two pointers

Mike and code of a permutation

constructive algorithms, data structures, graphs, sortings

A Serious Referee

bitmasks, brute force, dfs and similar, sortings

Runaway to a Shadow

geometry, sortings

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Berserk Robot

constructive algorithms, math, sortings

Печать условий

constructive algorithms, greedy, sortings

Optimizer

data structures, greedy, sortings

The Cells on the Paper

binary search, implementation, sortings

Employment

greedy, sortings

Maximum Waterfall

data structures, dp, graphs, sortings

Tiles for Bathroom

data structures, sortings, two pointers

Cartoons

*special problem, implementation, sortings

Gripping Story

binary search, data structures, sortings

Uncle Bogdan and Projections

data structures, geometry, sortings

Adilbek and the Watering System

data structures, greedy, sortings

Donkey and Stars

data structures, dp, geometry, math, sortings

Property

greedy, sortings

Tourists

data structures, sortings

Min Cost Permutation (Hard Version)

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

New Year Snowflake

geometry, sortings

Cannon

data structures, geometry, sortings

Strange Sort

data structures, sortings

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Cat, Fox and Swaps

graphs, math, sortings

New Year Tree Decorations

geometry, schedules, sortings

Roland and Rose

brute force, geometry, math, sortings

GCD Master (easy version)

greedy, math, number theory, sortings

Survival of the Weakest (hard version)

greedy, math, sortings, two pointers

Tree Calendar

brute force, constructive algorithms, data structures, dfs and similar, sortings, trees

Blog Post Rating

data structures, sortings

Representative Sampling

dp, sortings, strings

Omkar and Tours

data structures, divide and conquer, sortings, trees

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Selling Numbers

dp, sortings

Minimize Inversions Number

data structures, greedy, math, sortings

Rainbow Rectangles

data structures, sortings, two pointers

MCMF?

data structures, flows, graphs, greedy, sortings, two pointers

The Potion of Great Power

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

A Certain Magical Party

combinatorics, data structures, greedy, sortings

Transportation

greedy, sortings, two pointers

Item World

brute force, implementation, sortings

GCD Master (hard version)

greedy, math, sortings

Nene and the Passing Game

constructive algorithms, data structures, dsu, graphs, sortings

Evaluate RBS

data structures, geometry, implementation, math, sortings

A Story of One Country (Hard)

brute force, greedy, sortings

Bonus Distribution

*special problem, binary search, greedy, sortings

Looking for Owls

binary search, data structures, geometry, hashing, sortings

Furukawa Nagisa's Tree

binary search, divide and conquer, sortings, trees

Inquisition

geometry, implementation, sortings

Phoenix and Diamonds

binary search, data structures, sortings