Very Suspicious

binary search, brute force, geometry, greedy, implementation, math

Interactive Treasure Hunt

brute force, constructive algorithms, geometry, interactive, math

Global Warming

geometry, math

Connect the Points

brute force, constructive algorithms, geometry

Pandemic Restrictions

geometry, ternary search

Weird Sum

combinatorics, data structures, geometry, math, matrices, sortings

Hard Way

geometry

Covering Circle

geometry

Spaceship Crisis Management

binary search, data structures, geometry, sortings

Not Splitting

geometry, graphs, greedy, implementation, shortest paths

Construct a Rectangle

geometry, math

Triangles on a Rectangle

geometry, greedy, math

Representative Edges

brute force, geometry, implementation, math

Shortest path

brute force, geometry, math, shortest paths

Training Session

combinatorics, data structures, geometry, implementation, math

Eligible Segments

geometry

Interactive Rays

geometry, interactive

Framing Pictures

geometry

Managing Telephone Poles

data structures, geometry

Building an Amusement Park

binary search, geometry

Polygon

binary search, dp, geometry

Laser Beams

*special problem, geometry, probabilities

Maximize the Intersections

combinatorics, constructive algorithms, geometry, greedy, sortings

Manhattan Subarrays

brute force, geometry, greedy, implementation

Gregor and the Odd Cows (Hard)

brute force, geometry, math, number theory

Gregor and the Odd Cows (Easy)

bitmasks, geometry, math, number theory

Contest Start

combinatorics, geometry, greedy, math

Omkar and Akmar

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

A New Beginning

data structures, dp, geometry, sortings

Off by One

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

Fly Around the World

dp, geometry

Phoenix and Puzzle

brute force, geometry, math, number theory

Swap Pass

constructive algorithms, geometry, sortings

Balance the Cards

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

Diamond Miner

geometry, greedy, math, sortings

Eastern Exhibition

binary search, geometry, shortest paths, sortings

Nezzar and Nice Beatmap

constructive algorithms, geometry, greedy, math, sortings

Plane Tiling

geometry, implementation, math

Hobbits

binary search, geometry

Full Turn

geometry, hashing, number theory

Bovine Dilemma

brute force, geometry, math

Four Points

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

Circle Game

games, geometry, math

Balls of Steel

brute force, geometry, greedy

Line Distance

binary search, data structures, geometry

Rectangular Polyline

constructive algorithms, dp, geometry

Prison Break

binary search, games, geometry, ternary search

5G Antenna Towers

geometry

Fence

geometry, math

Roads

*special problem, geometry, sortings

Divide Square

data structures, geometry, implementation, sortings

Bad Triangle

geometry, math

Boboniu and String

binary search, geometry, ternary search

Uncle Bogdan and Projections

data structures, geometry, sortings

Mixture

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

Origami

geometry, math, sortings

Cubic Lattice

geometry, math, matrices, number theory

FashionabLee

geometry, math

Shifting Dominoes

data structures, geometry, graphs, trees

Jog Around The Graph

binary search, dp, geometry, graphs

RC Kaboom Show

binary search, brute force, data structures, geometry, math

Not So Simple Polygon Embedding

binary search, brute force, geometry, math

Simple Polygon Embedding

binary search, geometry, math, ternary search

Jordan Smiley

*special problem, dfs and similar, geometry, implementation

Spiderweb Trees

dp, geometry, trees

Two Regular Polygons

geometry, greedy, math, number theory

Cow and Friend

geometry, greedy, math

Sum of Prefix Sums

data structures, divide and conquer, geometry, trees

Water Balance

data structures, geometry, greedy

Aerodynamic

geometry

Aroma's Search

brute force, constructive algorithms, geometry, greedy, implementation

New Year and Castle Construction

combinatorics, geometry, math, sortings

Shawarma Tent

brute force, geometry, greedy, implementation

Divide Points

constructive algorithms, geometry, math

Point Ordering

constructive algorithms, geometry, interactive, math

Integer Points

geometry, math

Balanced Removals (Easier)

constructive algorithms, geometry, greedy

Geolocation

geometry

Guarding warehouses

data structures, geometry

White Sheet

geometry, math

Water Lily

geometry, math

Geometers Anonymous Club

data structures, geometry, math, sortings

Count The Rectangles

bitmasks, brute force, data structures, geometry, sortings

Scissors and Tape

*special problem, constructive algorithms, geometry

Yet Another Partiton Problem

data structures, divide and conquer, dp, geometry, two pointers

Low Budget Inception

brute force, geometry

Power Transmission (Hard Edition)

data structures, geometry, implementation, math

Power Transmission (Easy Edition)

brute force, geometry

Winding polygonal line

constructive algorithms, geometry, greedy, math

Inscribed Figures

geometry

Satanic Panic

dp, geometry

U2

geometry

NN and the Optical Illusion

binary search, geometry, math

Polygon for the Angle

brute force, geometry

The Fair Nut and Rectangles

data structures, dp, geometry

Rain Protection

binary search, geometry

Algoland and Berland

constructive algorithms, divide and conquer, geometry

Make a triangle!

brute force, geometry, math

Dwarves, Hats and Extrasensory Abilities

binary search, constructive algorithms, geometry, interactive

Nature Reserve

binary search, geometry, ternary search