Yin Yang

implementation

Chess Rush

*special problem, combinatorics, dp, implementation, math

Cipher

implementation

INI-file

*special problem, implementation

Gnomes of Might and Magic

data structures, graphs, implementation, shortest paths

Battleship

*special problem, dfs and similar, implementation

Harry Potter and Moving Staircases

dfs and similar, implementation

Combostone

games, implementation

Grid Sort

implementation

Help King

implementation, probabilities, trees

Multithreading (Hard Version)

combinatorics, implementation, math

Deja Vu

constructive algorithms, graphs, implementation

Balance the Cards

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

Tree and Table

dfs and similar, dp, implementation, trees

Sleeping

combinatorics, implementation, math

Name the album

*special problem, data structures, implementation

Vasily the Bear and Painting Square

bitmasks, combinatorics, dp, implementation

Optimizer

graphs, greedy, hashing, implementation

Red Blue Tree

data structures, implementation, trees

Inverse Function

implementation

JS Minification

greedy, implementation

Johnny and New Toy

data structures, implementation, math

Intranet of Buses

binary search, geometry, implementation, two pointers

Movie Fan

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

kotlinkotlinkotlinkotlin...

*special problem, graphs, implementation, strings

October 18, 2017

combinatorics, dp, implementation, math

Design Tutorial: Learn from a Game

constructive algorithms, implementation

Passports

dp, implementation

Entertaining Geodetics

brute force, dsu, implementation

Polynom

*special problem, implementation

Escaping on Beaveractor

data structures, implementation, trees

Fedya the Potter

binary search, implementation, math, number theory

Swiper, no swiping!

graphs, implementation

Sequence Transformation

brute force, data structures, dp, implementation, math

The Fair Nut's getting crazy

data structures, implementation

Suns and Rays

constructive algorithms, dfs and similar, implementation

Suns and Rays

dfs and similar, implementation

Escaping on Beaveractor

dfs and similar, implementation

Perpetual Motion Machine

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

Harry The Potter

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

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Showing Off

flows, graph matchings, greedy, implementation

Two Rooted Trees

data structures, implementation, trees

Two Circles

brute force, data structures, implementation

MEX counting

combinatorics, dp, implementation

Twilight and Ancient Scroll (harder version)

dp, hashing, implementation, string suffix structures, strings, two pointers

Array Sorting

*special problem, implementation

Robot in Basement

bitmasks, brute force, implementation

Air Reform

data structures, dfs and similar, divide and conquer, dsu, graphs, implementation, trees

Karen and Neighborhood

binary search, constructive algorithms, implementation

Hamming Triples

implementation, math, two pointers

Qingshan and Daniel

brute force, data structures, greedy, implementation

Tree or not Tree

data structures, divide and conquer, implementation, trees

Strange Permutation

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

A polyline

*special problem, implementation

Sasha and a Patient Friend

binary search, data structures, implementation

Tape Programming

data structures, implementation

Lucky Pair

combinatorics, data structures, implementation

Berland Square

implementation, math

Stack

*special problem, expression parsing, implementation

Reverse It!

*special problem, implementation

Shooting Gallery

data structures, implementation

Polo the Penguin and Lucky Numbers

dp, implementation, math

Greedy Elevator

data structures, implementation

Playing Around the Table

constructive algorithms, greedy, implementation

Anagram Paths

dp, implementation, trees

Domino

brute force, implementation

Pairs

dfs and similar, dp, dsu, graphs, implementation, trees

Inquisition

geometry, implementation, sortings

Deputies

constructive algorithms, graphs, greedy, implementation

Encoded message

*special problem, implementation

Twilight and Ancient Scroll (easier version)

dp, hashing, implementation, string suffix structures, strings

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Sweepstake

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

Mirror Room

data structures, implementation

Lucky Segments

binary search, implementation, two pointers

Bowls

geometry, implementation

Item World

brute force, implementation, sortings

Binary Notation

*special problem, implementation

Friendly Numbers

*special problem, implementation

Race

brute force, implementation

Battlefield

geometry, graphs, implementation, shortest paths

Concise and clear

brute force, greedy, implementation, math

Physical Education and Buns

brute force, implementation, math

Domino Carpet

dp, implementation

Johnny and James

greedy, implementation, math, trees

Binary Key

dp, greedy, implementation

Shaass and Painter Robot

brute force, implementation, number theory

Hide-and-Seek

geometry, implementation

Xenia and String Problem

dp, hashing, implementation, string suffix structures, strings

Tractor College

implementation, math, number theory, ternary search

Kingdom of Islands

brute force, graphs, implementation

Bear and Chase

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

Cycle

brute force, dfs and similar, implementation

Red-Black Cobweb

data structures, divide and conquer, implementation, trees

HQ9+

*special problem, implementation

Delete The Edges

brute force, constructive algorithms, dfs and similar, graphs, implementation

Sagheer and Kindergarten

dfs and similar, graphs, implementation, trees

Rhyme

*special problem, implementation

You Are Given Some Letters...

binary search, implementation, math