Next and Prev

brute force, data structures, implementation

Rogue-like Game

*special problem, brute force, greedy, two pointers

Egg Roulette

bitmasks, brute force, divide and conquer, math, meet-in-the-middle

Railway Construction

brute force, constructive algorithms, data structures, graphs, shortest paths

Keep talking and nobody explodes -- easy

bitmasks, brute force, expression parsing

Plane of Tanks

brute force, geometry

Ruler Of The Zoo

brute force, data structures

Pills

brute force, flows

Math, math everywhere

brute force, dp, math, meet-in-the-middle, number theory

Cyclic Hamming (Easy Version)

brute force, divide and conquer, dp, fft, math, number theory

Damage per Second

brute force, math

Mateusz and an Infinite Sequence

bitmasks, brute force, dp, strings

Grove

brute force, dfs and similar, dp, geometry, probabilities

Cyclic Hamming (Hard Version)

brute force, dp, fft, math, number theory

Lucky Interval

brute force, math

AquaMoon and Potatoes

brute force, data structures, dp

Mark and Spaceship

brute force, dp

The very same Munchhausen

brute force

Clubstep

binary search, brute force, data structures, greedy, trees

Игра в Девятку III

*special problem, brute force

Optimal Encoding

brute force, data structures

Hex Dyslexia

bitmasks, brute force, dp, graphs

Show Must Go On

binary search, brute force, greedy, shortest paths

Finding the Vertex

brute force, dfs and similar, dp, interactive, trees

To Hack or not to Hack

brute force, dp, greedy

Olympic Team Building

brute force, meet-in-the-middle

Entertaining Geodetics

brute force, dsu, implementation

The Films

brute force

Polygonal Segments

brute force, data structures, divide and conquer, dp, greedy, two pointers

Low Budget Inception

brute force, geometry

Ali goes shopping

*special problem, brute force, strings

Blocks and Sensors

brute force

Maximum Product?

brute force, combinatorics, dp, greedy, implementation, math, two pointers

Mrs. Hudson's Pancakes

brute force, dp

Strange Triples

brute force, math, number theory

Your Loss

bitmasks, brute force, dp, trees

Hellish Constraints

brute force, dp, two pointers

Tennis Rackets

brute force, geometry

Long sequence

brute force, math, matrices

The Tournament

brute force

Lift and Throw

brute force

Maximum GCD Sum Queries

bitmasks, brute force, dp, implementation, number theory

Toys

brute force, combinatorics

Игра в Девятку II

*special problem, brute force

Divide The Students

brute force

Marek and Matching (easy version)

brute force, probabilities

Marek and Matching (hard version)

brute force, probabilities

Minecraft Series

brute force, two pointers

Two Circles

brute force, data structures, implementation

Sequence Transformation

brute force, data structures, dp, implementation, math

Weird LCM Operations

brute force, constructive algorithms, number theory

Supercollider

brute force

Two Posters

brute force, data structures, greedy, two pointers

Party

bitmasks, brute force, graph matchings

Wavy numbers

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

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Just Kingdom

brute force, data structures, dfs and similar

Gears

brute force, geometry, math

Minimum Diameter

binary search, brute force

Palindromic Hamiltonian Path

brute force, dfs and similar, dp, graphs, hashing

Prime Segment

*special problem, brute force, math, number theory

Gregor and the Odd Cows (Hard)

brute force, geometry, math, number theory

The Overdosing Ubiquity

brute force, dfs and similar, graphs

Frames

brute force

Harry The Potter

brute force, constructive algorithms, dp, fft, implementation, math

Robot in Basement

bitmasks, brute force, implementation

Bitonix' Patrol

bitmasks, brute force, combinatorics, dfs and similar, math

Take Metro

brute force, data structures, graphs

Kostyanych's Theorem

brute force, constructive algorithms, graphs, interactive

Half-sum

brute force, divide and conquer, greedy

Domino

brute force, implementation

Race

brute force, implementation

Power Defence

brute force, dp, geometry, greedy

Physical Education and Buns

brute force, implementation, math

Inverse Inversions

binary search, brute force, data structures

Fishingprince Plays With Array Again

brute force, data structures, geometry, math

Familiar Operations

brute force, graphs, math

Chain Reaction

brute force, geometry

A Story of One Country (Hard)

brute force, greedy, sortings

A Creative Cutout

brute force, combinatorics, math

Interactive Bulls and Cows (Hard)

brute force, constructive algorithms, interactive

Bob's Beautiful Array

bitmasks, brute force, greedy

Cycle

brute force, dfs and similar, implementation

Plane of Tanks: Duel

brute force, dp, math, probabilities

Chiori and Doll Picking (hard version)

bitmasks, brute force, combinatorics, math

Concise and clear

brute force, greedy, implementation, math

Synchrophasotron

brute force

Sign Posts

brute force, geometry, math

Shaass and Painter Robot

brute force, implementation, number theory

Infinite Game

brute force, combinatorics, dp, games, probabilities

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

N Machines

binary search, brute force, greedy

Permutation Counting

brute force, combinatorics, dp, fft, math

Triangle Platinum?

brute force, combinatorics, implementation, interactive, math, probabilities

Rectangles and Square

brute force, dp

Goblins And Gnomes

brute force, dp, flows, graph matchings

Cubeword

*special problem, brute force, dp, meet-in-the-middle

Fibonacci Number

brute force, math, matrices

Sweepstake

*special problem, brute force, constructive algorithms, implementation, math

Tree Calendar

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