Next and Prev

brute force, data structures, implementation

Chess Rush

*special problem, combinatorics, dp, implementation, math

Cipher

implementation

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

LIS?

data structures, greedy, implementation

Battleship

*special problem, dfs and similar, implementation

INI-file

*special problem, implementation

Mainak and the Bleeding Polygon

binary search, geometry, implementation, math

Harry Potter and Moving Staircases

dfs and similar, implementation

Olympiad Training

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

Yin Yang

implementation

Card Pairing

dp, greedy, hashing, implementation

Combostone

games, implementation

Impressionism

constructive algorithms, graphs, implementation, math

Vasily the Bear and Painting Square

bitmasks, combinatorics, dp, implementation

Name the album

*special problem, data structures, implementation

Grid Sort

implementation

Movie Fan

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

Help King

implementation, probabilities, trees

Intranet of Buses

binary search, geometry, implementation, two pointers

Sleeping

combinatorics, implementation, math

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

Optimizer

graphs, greedy, hashing, implementation

JS Minification

greedy, implementation

Inverse Function

implementation

Design Tutorial: Learn from a Game

constructive algorithms, implementation

Polynom

*special problem, implementation

Balance the Cards

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

Entertaining Geodetics

brute force, dsu, implementation

Red Blue Tree

data structures, implementation, trees

Good Graph

bitmasks, dfs and similar, graph matchings, graphs, implementation

Johnny and New Toy

data structures, implementation, math

Passports

dp, implementation

Maximum Product?

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

Deja Vu

constructive algorithms, graphs, implementation

Suns and Rays

constructive algorithms, dfs and similar, implementation

Suns and Rays

dfs and similar, implementation

Multithreading (Hard Version)

combinatorics, implementation, math

Tree and Table

dfs and similar, dp, implementation, trees

Escaping on Beaveractor

data structures, implementation, trees

Three Arrays

*special problem, constructive algorithms, implementation, sortings

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Infinite Chess

implementation, shortest paths

Two Circles

brute force, data structures, implementation

Flow Control

data structures, dsu, implementation

Sequence Transformation

brute force, data structures, dp, implementation, math

Escaping on Beaveractor

dfs and similar, implementation

Two Rooted Trees

data structures, implementation, trees

Playing Quidditch (Hard)

implementation

Digital Patterns

combinatorics, data structures, implementation, math

Playing Quidditch (Medium)

implementation

Fedya the Potter

binary search, implementation, math, number theory

Karen and Neighborhood

binary search, constructive algorithms, implementation

The Fair Nut's getting crazy

data structures, implementation

Hamming Triples

implementation, math, two pointers

Harry The Potter

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

Lucky Pair

combinatorics, data structures, implementation

Robot in Basement

bitmasks, brute force, implementation

Berland Square

implementation, math

Tape Programming

data structures, implementation

Stack

*special problem, expression parsing, implementation

Swiper, no swiping!

graphs, implementation

Sasha and a Patient Friend

binary search, data structures, implementation

Deputies

constructive algorithms, graphs, greedy, implementation

Flower-like Pseudotree

constructive algorithms, graphs, greedy, implementation, trees

Inquisition

geometry, implementation, sortings

Domino

brute force, implementation

Magic Square

combinatorics, constructive algorithms, implementation

Reverse It!

*special problem, implementation

Local Deletions

binary search, data structures, implementation

Race

brute force, implementation

Physical Education and Buns

brute force, implementation, math

Hard Design

greedy, implementation, math

Evaluate RBS

data structures, geometry, implementation, math, sortings

A polyline

*special problem, implementation

October 18, 2017

combinatorics, dp, implementation, math

Item World

brute force, implementation, sortings

Perpetual Motion Machine

constructive algorithms, dp, graphs, implementation, math, trees

Lucky Segments

binary search, implementation, two pointers

Greedy Elevator

data structures, implementation

Battlefield

geometry, graphs, implementation, shortest paths

Playing Quidditch (Easy)

implementation

Polo the Penguin and Lucky Numbers

dp, implementation, math

Binary Notation

*special problem, implementation

Encoded message

*special problem, implementation

Strange Permutation

binary search, combinatorics, data structures, dp, graphs, implementation, two pointers

Cycle

brute force, dfs and similar, implementation

Concise and clear

brute force, greedy, implementation, math

Binary Key

dp, greedy, implementation

Shaass and Painter Robot

brute force, implementation, number theory

Mirror Room

data structures, implementation

Pepe Racing

constructive algorithms, implementation, interactive, sortings

Johnny and James

greedy, implementation, math, trees

Beautiful Tree

data structures, dfs and similar, graphs, implementation, trees

Domino Carpet

dp, implementation

Tree or not Tree

data structures, divide and conquer, implementation, trees

Bear and Chase

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

Amanda the Amoeba

graphs, implementation, trees, two pointers

Triangle Platinum?

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

Sweepstake

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