Dating

greedy, sortings, trees

Parade

data structures, sortings

Geometers Anonymous Club

data structures, geometry, math, sortings

Drone Photo

combinatorics, math, sortings

Help, what does it mean to be "Based"

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

Wilbur and Trees

dp, math, probabilities, sortings

Castle

dp, greedy, probabilities, sortings, trees

Katya and Segments Sets

data structures, interactive, sortings

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

Teams Forming

*special problem, sortings

Spring Cleaning

*special problem, greedy, 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

Lucky Tickets

binary search, data structures, sortings, two pointers

Unordered Swaps

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

Renovation

constructive algorithms, greedy, sortings

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

Conveyor

sortings, two pointers

M-tree

data structures, math, sortings, trees

Camping Groups

data structures, sortings

Swap Pass

constructive algorithms, geometry, sortings

Minimum Difference

data structures, hashing, sortings, two pointers

Ancient Language

graphs, sortings

Petya and Tree

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

Place Your Ad Here

data structures, sortings

Printer

binary search, data structures, implementation, sortings

A New Beginning

data structures, dp, geometry, 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

Kay and Eternity

brute force, implementation, sortings

Ice Cream

*special problem, greedy, 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

A Story of One Country (Easy)

brute force, divide and conquer, sortings

Runaway to a Shadow

geometry, 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

Tiles for Bathroom

data structures, sortings, two pointers

Maximum Waterfall

data structures, dp, graphs, sortings

Cartoons

*special problem, implementation, sortings

Gripping Story

binary search, data structures, sortings

Adilbek and the Watering System

data structures, greedy, sortings

Uncle Bogdan and Projections

data structures, geometry, sortings

Property

greedy, sortings

Donkey and Stars

data structures, dp, geometry, math, 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

New Year Tree Decorations

geometry, schedules, sortings

Roland and Rose

brute force, geometry, math, sortings

GCD Master (easy version)

greedy, math, number theory, sortings

Tree Calendar

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

Survival of the Weakest (hard version)

greedy, math, sortings, two pointers

Blog Post Rating

data structures, sortings

Representative Sampling

dp, sortings, strings

Omkar and Tours

data structures, divide and conquer, sortings, trees

Minimize Inversions Number

data structures, greedy, math, sortings

Selling Numbers

dp, sortings

Pepe Racing

constructive algorithms, implementation, interactive, 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

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

Nene and the Passing Game

constructive algorithms, data structures, dsu, graphs, sortings

Phoenix and Diamonds

binary search, data structures, sortings

Slalom

data structures, dp, sortings

Собачки и миски

data structures, greedy, sortings

Triangles 3000

geometry, sortings

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Caramel Clouds

data structures, dp, sortings

Wavy numbers

brute force, dfs and similar, meet-in-the-middle, sortings

Dangerous Laser Power

constructive algorithms, dsu, sortings

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Array sorting

*special problem, sortings

Little Brother

binary search, geometry, sortings