The Fair Nut and Rectangles

data structures, dp, geometry

Divide Square

data structures, geometry, implementation, sortings

Long Way Home

data structures, divide and conquer, dp, geometry, graphs, greedy, shortest paths

Four Points

brute force, constructive algorithms, flows, geometry, greedy, implementation, math, ternary search

Covered Points

fft, geometry, number theory

U2

geometry

Coloring

brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math

Freelancer's Dreams

geometry

Fractal Origami

geometry, math, matrices

Rest In The Shades

binary search, geometry

The Supersonic Rocket

geometry, hashing, strings

Delivering Carcinogen

binary search, geometry

Hide-and-Seek

geometry, implementation

Ship's Shortest Path

geometry, shortest paths

Looking for Owls

binary search, data structures, geometry, hashing, sortings

Managing Telephone Poles

data structures, geometry

Alternative Reality

geometry

Bear and Bowling 4

binary search, data structures, divide and conquer, geometry, ternary search

New Year and Castle Construction

combinatorics, geometry, math, sortings

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Lena and Queries

data structures, divide and conquer, geometry

Hobbits

binary search, geometry

Geometers Anonymous Club

data structures, geometry, math, sortings

The Child and Polygon

dp, geometry

Very simple problem

geometry, two pointers

Spinach Pizza

games, geometry, greedy, interactive

Robot Arm

data structures, geometry

Igloo Skyscraper

data structures, geometry

Sereja and Straight Lines

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

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Max and Bike

binary search, geometry

Plane Tiling

geometry, implementation, math

Runaway to a Shadow

geometry, sortings

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

New Year Tree Decorations

geometry, schedules, sortings

Max and Min

geometry

Save the City!

geometry

Help Greg the Dwarf

geometry, ternary search

Little Elephant and Triangle

geometry, math

Space mines

geometry

Emperor's Problem

geometry

Product Sum

data structures, dp, geometry

Commentator problem

geometry

Guard Towers

binary search, dsu, geometry, graphs, sortings

Omkar and Akmar

chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures

Boboniu and String

binary search, geometry, ternary search

Tavas and Pashmaks

geometry, math

Billiard

geometry, number theory

Winding polygonal line

constructive algorithms, geometry, greedy, math

Alyona and Triangles

geometry, two pointers

Triangles

dp, geometry

Mogohu-Rea Idol

geometry

Two Friends

binary search, geometry

Limak and Shooting Points

brute force, geometry, math

King's Problem?

geometry, greedy

New Year Snowflake

geometry, sortings

The Last Hole!

brute force, geometry

Tetragon

geometry, math

Hag's Khashba

geometry

Power Defence

brute force, dp, geometry, greedy

Corridor

geometry

Playing the ball

geometry

Recover Polygon (medium)

geometry

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Escape Through Leaf

data structures, dp, geometry

Professor's task

data structures, geometry

Off by One

constructive algorithms, dfs and similar, geometry, graphs, sortings, trees

Sum of Prefix Sums

data structures, divide and conquer, geometry, trees

Disjoint Triangles

geometry

Large Triangle

binary search, geometry, sortings

Jog Around The Graph

binary search, dp, geometry, graphs

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

A Colourful Prospect

geometry, graphs

Crop Squares

constructive algorithms, geometry, interactive, math

Monocarp and a Strategic Game

geometry, sortings, two pointers

Uncle Bogdan and Projections

data structures, geometry, sortings

Donkey and Stars

data structures, dp, geometry, math, sortings

Shortest path

brute force, geometry, math, shortest paths

Roland and Rose

brute force, geometry, math, sortings

Ksusha and Square

geometry, math, probabilities, two pointers

A Trance of Nightfall

dp, geometry, matrices, probabilities

BCPC

binary search, geometry, two pointers

Cubes

data structures, dp, geometry, two pointers

Vacuum Сleaner

geometry

Guard Duty (hard)

geometry

Tennis Rackets

brute force, geometry

Sasha Circle

geometry, math

Darts

geometry, probabilities

5G Antenna Towers

geometry

BerPaint

geometry, graphs

Karen and Cards

binary search, combinatorics, data structures, geometry

Cookie Clicker

dp, geometry

Randomizer

combinatorics, geometry, probabilities

Sherlock's bet to Moriarty

constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation, trees

Martian Food

geometry

Fading into Fog

geometry, interactive, math, probabilities

Sign Posts

brute force, geometry, math

Spectator Riots

geometry

Cowboy Beblop at his computer

geometry

Little Brother

binary search, geometry, sortings