Registration System

data structures, hashing, implementation

ICPC Balloons

data structures, implementation

Same Differences

data structures, hashing, math

Sereja and Suffixes

data structures, dp

A and B and Compilation Errors

data structures, implementation, sortings

Number of Ways

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

Advantage

data structures, implementation, sortings

Remove Prefix

data structures, greedy, implementation

Word Game

data structures, implementation

Frog Jumps

binary search, data structures, dfs and similar, greedy, implementation

XXXXX

brute force, data structures, number theory, two pointers

Queries about less or equal elements

binary search, data structures, sortings, two pointers

Number of Pairs

binary search, data structures, math, two pointers

Pair of Topics

binary search, data structures, sortings, two pointers

Odd Queries

data structures, implementation

Restoring the Duration of Tasks

data structures, greedy, implementation

Bad Prices

data structures, implementation

Phoenix and Beauty

constructive algorithms, data structures, greedy, sortings

Meximization

brute force, data structures, greedy, sortings

Double Strings

brute force, data structures, strings

Numbers on Whiteboard

constructive algorithms, data structures, greedy, implementation, math

Good Subarrays

data structures, dp, math

Little Girl and Maximum Sum

data structures, greedy, implementation, sortings

Xenia and Bit Operations

data structures, trees

Planets

data structures, greedy, sortings

Rotation Matching

constructive algorithms, data structures, greedy, implementation

Three Indices

brute force, data structures

Also Try Minecraft

data structures, dp, implementation

Yet Another Card Deck

brute force, data structures, implementation, trees

Eating Candies

binary search, data structures, greedy, two pointers

Corrupted Array

constructive algorithms, data structures, greedy

Powering the Hero (easy version)

data structures, greedy

Train and Queries

data structures, greedy

Interesting Sum

brute force, data structures, greedy, math, sortings

Berland Music

data structures, greedy, math, sortings

Element Extermination

constructive algorithms, data structures, greedy

Potions (Easy Version)

brute force, data structures, dp, greedy

Odd Swap Sort

data structures, math, sortings

Polycarp Training

data structures, greedy, sortings

Hotelier

brute force, data structures, implementation

Epic Transformation

constructive algorithms, data structures, greedy

Powering the Hero (hard version)

data structures, greedy

Prefix Flip (Easy Version)

constructive algorithms, data structures, strings

Remove Two Letters

data structures, greedy, hashing, strings

Potions (Hard Version)

data structures, greedy

Three Parts of the Array

binary search, data structures, two pointers

Han Solo and Lazer Gun

brute force, data structures, geometry, implementation, math

Block Towers

data structures, greedy, sortings

ABBB

brute force, data structures, greedy, strings

Delete Two Elements

data structures, dp, implementation, math, two pointers

Snacktower

data structures, implementation

Flower City Fence

binary search, data structures, implementation, sortings

Lecture Sleep

data structures, dp, implementation, two pointers

Card Deck

data structures, greedy, math

Binary Inversions

data structures, greedy, math

Valerii Against Everyone

constructive algorithms, data structures, greedy, sortings

Accidental Victory

binary search, data structures, greedy

Binary String To Subsequences

constructive algorithms, data structures, greedy, implementation

3SUM Closure

brute force, data structures

Constructing the Array

constructive algorithms, data structures, sortings

Subtract Operation

data structures, greedy, math, two pointers

Mystic Permutation

data structures, greedy

Subsequence Addition (Easy Version)

brute force, data structures, dp, greedy, implementation, sortings

Rudolf and the Another Competition

constructive algorithms, data structures, dp, greedy, sortings

Yet Another Problem About Pairs Satisfying an Inequality

binary search, data structures, dp, greedy, sortings

Matryoshkas

data structures, greedy, sortings

Dora and Search

constructive algorithms, data structures, two pointers

Social Network (hard version)

data structures, implementation

Applejack and Storages

constructive algorithms, data structures, greedy, implementation

Phoenix and Towers

constructive algorithms, data structures, greedy

Stone Age Problem

data structures, implementation

2-Letter Strings

data structures, math, strings

Box Fitting

binary search, bitmasks, data structures, greedy

Karen and Coffee

binary search, data structures, implementation

Berland Regional

brute force, data structures, greedy, number theory, sortings

Orac and LCM

data structures, math, number theory

Minimum Notation

data structures, greedy, math, sortings

Maximum width

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

Three Sevens

brute force, data structures, greedy, implementation

Greg and Array

data structures, implementation

Journey Planning

data structures, dp, greedy, math, sortings

Misha and Changing Handles

data structures, dsu, strings

Non-zero Segments

constructive algorithms, data structures, greedy, sortings

Equalize the Array

binary search, data structures, greedy, math, sortings

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Wonderful Coloring - 2

binary search, constructive algorithms, data structures, greedy

Watchmen

data structures, geometry, math

YetnotherrokenKeoard

data structures, implementation, strings

2^Sort

data structures, dp, sortings, two pointers

Digital Logarithm

data structures, greedy, sortings

Yet Another Walking Robot

data structures, implementation

Game with string

data structures, implementation, math

Chat Order

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

Inversion Graph

data structures, dsu, graphs, math

Balanced Tunnel

data structures, sortings, two pointers

Good Subarrays (Easy Version)

binary search, data structures, schedules, two pointers

Seating Arrangements (easy version)

data structures, greedy, sortings

Grandma Capa Knits a Scarf

brute force, data structures, greedy, strings, two pointers

Distinct Characters Queries

data structures

awoo's Favorite Problem

binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers