Petya and File System

data structures, implementation

Chocolate

dfs and similar, implementation

Warehouse

implementation

Martian Architecture

implementation

Champions' League

implementation

New Year and the Acquaintance Estimation

binary search, data structures, graphs, greedy, implementation, math, sortings

The World Is Just a Programming Task (Hard Version)

implementation

Antennas

data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths

Hexagons

binary search, implementation, math

Parking Lot

data structures, implementation

Curious Array

brute force, combinatorics, implementation, math

Group Photo

binary search, data structures, implementation, two pointers

Mean Requests

*special problem, implementation

Likes Display

*special problem, implementation

Points Movement

data structures, dp, greedy, implementation, sortings

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

Game of chess unfinished

implementation

Snake

bitmasks, dfs and similar, graphs, implementation

Cards

constructive algorithms, implementation

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Similar Sets

data structures, graphs, implementation

Excitation of Atoms

greedy, implementation

Arthur and Questions

greedy, implementation, math, ternary search

Population Size

greedy, implementation, math

Reading Books (hard version)

data structures, greedy, implementation, sortings, ternary search, two pointers

Turtle

dp, implementation

Trees and XOR Queries Again

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

Carpeting the Room

*special problem, implementation

Huge Strings

bitmasks, brute force, dp, implementation, strings

Points

combinatorics, data structures, implementation, math, matrices

Dependency management

*special problem, graphs, implementation

Programming Language

binary search, brute force, expression parsing, implementation

Coloring

combinatorics, constructive algorithms, implementation, math

Computer Game

greedy, implementation

Log Stream Analysis

binary search, brute force, implementation, strings

Vasya and Templates

greedy, implementation, strings

Case of a Top Secret

binary search, implementation, math

Lamps on a Circle

games, implementation, interactive, math

Beautiful Road

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

Anniversary

data structures, implementation, math, matrices, number theory

Christmas Chocolates

dfs and similar, dp, games, graphs, implementation, math, number theory, shortest paths, trees

Letter A

geometry, implementation

Zbazi in Zeydabad

data structures, implementation

Furlo and Rublo and Game

games, implementation, math

Tree Queries

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

Hot is Cold

bitmasks, data structures, divide and conquer, implementation

Parquet

combinatorics, constructive algorithms, greedy, implementation

Survival of the Weakest (easy version)

binary search, brute force, implementation, math, sortings

Monsters and Potions

brute force, dp, greedy, implementation

E-mail Addresses

implementation

Complete Mirror

constructive algorithms, dfs and similar, dp, hashing, implementation, trees

The Coronation

graphs, implementation

XOR, Tree, and Queries

bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees

Serious Business

data structures, divide and conquer, dp, implementation, shortest paths

Two Tanks

binary search, dp, implementation, math

Pentagonal numbers

*special problem, implementation

Playoff Restoration

bitmasks, brute force, hashing, implementation, meet-in-the-middle

Counting Prefixes

combinatorics, constructive algorithms, dp, implementation, math

Caterpillar on a Tree

dfs and similar, graphs, greedy, implementation, sortings, trees

Brukhovich and Exams

brute force, greedy, implementation, math, sortings

Minus and Minus Give Plus

*special problem, implementation, strings

Evaluate It and Back Again

constructive algorithms, implementation, math

Bender Problem

implementation

Serval and Music Game

brute force, dp, implementation, math, number theory

Nearest Point Function

*special problem, implementation

Traveling Around the Golden Ring of Berland

*special problem, implementation

Vus the Cossack and a Graph

dfs and similar, graphs, greedy, implementation

Number Challenge

combinatorics, dp, implementation, math, number theory

Vika and Stone Skipping

brute force, implementation, math, number theory

Dima and Magic Guitar

brute force, implementation, math

Crossword

implementation

Misha and Paintings

constructive algorithms, data structures, greedy, implementation, math

Cutting Jigsaw Puzzle

hashing, implementation

BinCoin

binary search, divide and conquer, hashing, implementation, probabilities, trees

On Corruption and Numbers

constructive algorithms, implementation, math

Intriguing Selection

brute force, constructive algorithms, implementation, interactive, sortings

Minlexes

dp, greedy, implementation, strings

One-Four Overload

2-sat, constructive algorithms, dfs and similar, dsu, graphs, implementation

Misha and Palindrome Degree

binary search, combinatorics, implementation

Shave Beaver!

implementation

Map

data structures, implementation, sortings

Sweets Game

bitmasks, dfs and similar, dp, games, implementation

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Award Ceremony

greedy, implementation

Timofey and remoduling

brute force, implementation, math, number theory

A + Reverse B

*special problem, implementation

Black Friday

*special problem, implementation

Help, what does it mean to be "Based"

brute force, constructive algorithms, expression parsing, implementation, sortings

Defining Macros

dp, expression parsing, implementation

Vectors

implementation, math

Tanks

dp, greedy, implementation

Running Over The Bridges

greedy, implementation, math

Boom

implementation

Swedish Heroes

brute force, dp, implementation

INTERCALC

*special problem, implementation

Edo and Magnets

brute force, greedy, implementation, two pointers

Nene vs. Monsters (Hard Version)

brute force, greedy, implementation, math

Degree Set

constructive algorithms, graphs, implementation

Toy Machine

constructive algorithms, games, implementation