Registration System

data structures, hashing, implementation

A and B and Compilation Errors

data structures, implementation, sortings

Number of Ways

binary search, brute force, data structures, dp, two pointers

Sereja and Suffixes

data structures, dp

Bad Prices

data structures, implementation

Hotelier

brute force, data structures, implementation

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Xenia and Bit Operations

data structures, trees

Polycarp Training

data structures, greedy, sortings

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Prison Transfer

data structures, implementation

Social Network (hard version)

data structures, implementation

Watchmen

data structures, geometry, math

Three Parts of the Array

binary search, data structures, two pointers

Little Girl and Maximum Sum

data structures, greedy, implementation, sortings

Game with string

data structures, implementation, math

Misha and Changing Handles

data structures, dsu, strings

Cells Not Under Attack

data structures, math

Snacktower

data structures, implementation

Reorder the Array

combinatorics, data structures, math, sortings, two pointers

Build a Contest

data structures, implementation

Table Tennis

data structures, implementation

Color the Fence

data structures, dp, greedy, implementation

Replacement

constructive algorithms, data structures, implementation

Lecture Sleep

data structures, dp, implementation, two pointers

Escape from Stones

constructive algorithms, data structures, implementation, two pointers

Game of Credit Cards

data structures, dp, greedy, sortings

Bad Sequence

data structures, greedy

Sonya and Queries

data structures, implementation

Greg and Array

data structures, implementation

Balanced Tunnel

data structures, sortings, two pointers

Lunar New Year and a Wander

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

Candies!

data structures, dp, implementation, math

The Festive Evening

data structures, implementation

Cd and pwd commands

*special problem, data structures, implementation

Geometric Progression

binary search, data structures, dp

Karen and Coffee

binary search, data structures, implementation

PolandBall and Game

binary search, data structures, games, greedy, sortings, strings

Knight Tournament

data structures, dsu

Valeriy and Deque

data structures, implementation

Sereja and Brackets

data structures, schedules

Alternating Current

data structures, greedy, implementation

Coffee Break

binary search, data structures, greedy, two pointers

Catch Overflow!

data structures, expression parsing, implementation

Bus of Characters

data structures, greedy, implementation

Thor

brute force, data structures, implementation

Welfare State

binary search, brute force, data structures, sortings

Recursive Queries

binary search, data structures, dfs and similar

Chat Order

*special problem, binary search, constructive algorithms, data structures, sortings

Stripe

data structures, implementation

Powers of Two

brute force, data structures, implementation, math

Modulo Sum

combinatorics, data structures, dp, two pointers

Powerful array

data structures, implementation, math, two pointers

Lunar New Year and Food Ordering

data structures, implementation

Distinct Characters Queries

data structures

Bear and Prime Numbers

binary search, brute force, data structures, dp, implementation, math, number theory

Producing Snow

binary search, data structures

Photo to Remember

*special problem, data structures, dp, implementation

Playlist

brute force, data structures, sortings

Anya and Smartphone

constructive algorithms, data structures, implementation

RGB Substring (hard version)

data structures, dp, implementation, two pointers

Longest Regular Bracket Sequence

constructive algorithms, data structures, dp, greedy, sortings, strings

Destroying Array

data structures, dsu

Exam in BerSU (hard version)

brute force, data structures, greedy, math

Glass Carving

binary search, data structures, implementation

Lorenzo Von Matterhorn

brute force, data structures, implementation, trees

Maximum Absurdity

data structures, dp, implementation

New Reform

data structures, dfs and similar, dsu, graphs, greedy

Order Book

data structures, greedy, implementation, sortings

Cows and Sequence

constructive algorithms, data structures, implementation

Pashmak and Parmida's problem

data structures, divide and conquer, sortings

Alyona and Spreadsheet

binary search, data structures, dp, greedy, implementation, two pointers

T-shirt buying

data structures, implementation

Dima and Staircase

data structures, implementation

Minimize the error

data structures, greedy, sortings

Good Substrings

data structures, strings

Vasya and Basketball

binary search, brute force, data structures, implementation, sortings, two pointers

Berland Fair

binary search, brute force, data structures, greedy

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Okabe and Boxes

data structures, greedy, trees

Marvolo Gaunt's Ring

brute force, data structures, dp

Mike and Feet

binary search, data structures, dp, dsu

Cat Party (Easy Edition)

data structures, implementation

Heap Operations

constructive algorithms, data structures, greedy

Bubble Sort Graph

binary search, data structures, dp

Little Elephant and Array

constructive algorithms, data structures

Replace To Make Regular Bracket Sequence

data structures, expression parsing, math

Milking cows

data structures, greedy

Misha and Forest

constructive algorithms, data structures, greedy, sortings, trees

Bear and Blocks

binary search, data structures, dp, math

A and B and Interesting Substrings

data structures, dp, two pointers

Two TVs

data structures, greedy, sortings

Average Sleep Time

data structures, implementation, math

Merge Equals

data structures, implementation

Mentors

binary search, data structures, implementation

Glider

binary search, data structures, two pointers

Minimum Array

binary search, data structures, greedy

Molly's Chemicals

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

Cat Party (Hard Edition)

data structures, implementation

Present

binary search, data structures, greedy