Burenka and Pether

*special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees

Spaceship Crisis Management

binary search, data structures, geometry, sortings

Sort the Table

*special problem, sortings

Olympiad Training

binary search, data structures, dp, flows, geometry, implementation, sortings

Unequal Adjacent Elements

constructive algorithms, sortings

Origami

geometry, math, sortings

Roads

*special problem, geometry, sortings

Автобус

binary search, data structures, greedy, sortings

Table Bowling

*special problem, sortings

Freak Joker Process

binary search, data structures, sortings

Movie Fan

*special problem, data structures, greedy, implementation, sortings

Mixture

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

Almost Certainly

*special problem, constructive algorithms, data structures, sortings

Snow sellers

greedy, sortings

Lost Nodes

constructive algorithms, dp, graphs, interactive, sortings, trees

Row of Models

greedy, sortings

Little Brother

binary search, geometry, sortings

Array sorting

*special problem, sortings

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Dangerous Laser Power

constructive algorithms, dsu, sortings

Nene and the Passing Game

constructive algorithms, data structures, dsu, graphs, sortings

Wavy numbers

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

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Caramel Clouds

data structures, dp, sortings

Triangles 3000

geometry, sortings

Собачки и миски

data structures, greedy, sortings

Slalom

data structures, dp, sortings

Phoenix and Diamonds

binary search, data structures, sortings

Inquisition

geometry, implementation, sortings

Furukawa Nagisa's Tree

binary search, divide and conquer, sortings, trees

Looking for Owls

binary search, data structures, geometry, hashing, sortings

Bonus Distribution

*special problem, binary search, greedy, sortings

A Story of One Country (Hard)

brute force, greedy, sortings

Evaluate RBS

data structures, geometry, implementation, math, sortings

GCD Master (hard version)

greedy, math, sortings

Item World

brute force, implementation, sortings

Transportation

greedy, sortings, two pointers

A Certain Magical Party

combinatorics, data structures, greedy, sortings

The Potion of Great Power

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

MCMF?

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

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Rainbow Rectangles

data structures, sortings, two pointers

Selling Numbers

dp, sortings

Minimize Inversions Number

data structures, greedy, math, sortings

Representative Sampling

dp, sortings, strings

Omkar and Tours

data structures, divide and conquer, sortings, trees

Blog Post Rating

data structures, 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

GCD Master (easy version)

greedy, math, number theory, sortings

Roland and Rose

brute force, geometry, math, sortings

New Year Tree Decorations

geometry, schedules, sortings

Shoe Store

dp, graph matchings, greedy, sortings, two pointers

Strange Sort

data structures, sortings

Cannon

data structures, geometry, sortings

New Year Snowflake

geometry, sortings

Min Cost Permutation (Hard Version)

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

Tourists

data structures, sortings

Property

greedy, sortings

Donkey and Stars

data structures, dp, geometry, math, sortings

Adilbek and the Watering System

data structures, greedy, sortings

Uncle Bogdan and Projections

data structures, geometry, sortings

Gripping Story

binary search, data structures, sortings

Cartoons

*special problem, implementation, sortings

Tiles for Bathroom

data structures, sortings, two pointers

Maximum Waterfall

data structures, dp, graphs, sortings

Employment

greedy, sortings

The Cells on the Paper

binary search, implementation, sortings

Optimizer

data structures, greedy, sortings

Печать условий

constructive algorithms, greedy, sortings

Berserk Robot

constructive algorithms, math, 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

Mike and code of a permutation

constructive algorithms, data structures, graphs, sortings

Monocarp and a Strategic Game

geometry, sortings, two pointers

Ice Cream

*special problem, greedy, sortings

Kay and Eternity

brute force, implementation, sortings

Need For Brake

binary search, greedy, sortings

Bug in Code

binary search, data structures, sortings

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Perun, Ult!

brute force, greedy, sortings

A New Beginning

data structures, dp, geometry, sortings

Sereja and Straight Lines

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

Ancient Language

graphs, sortings

Place Your Ad Here

data structures, sortings

Printer

binary search, data structures, implementation, sortings

Petya and Tree

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

Swap Pass

constructive algorithms, geometry, sortings

Minimum Difference

data structures, hashing, sortings, two pointers

M-tree

data structures, math, sortings, trees

Camping Groups

data structures, sortings

Conveyor

sortings, two pointers

The Doctor Meets Vader (Medium)

flows, graph matchings, graphs, shortest paths, sortings

Renovation

constructive algorithms, greedy, sortings

Unordered Swaps

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

Lucky Tickets

binary search, data structures, sortings, two pointers

Bear and Paradox

binary search, greedy, math, sortings

Moon Craters

dp, sortings

Four Divisors

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