Harmonious Graph

constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings

Close Tuples (hard version)

binary search, combinatorics, implementation, math, sortings, two pointers

Traps

constructive algorithms, greedy, sortings

Nezzar and Symmetric Array

implementation, math, sortings

Mysterious Present

dp, sortings

String Transformation 1

dsu, graphs, greedy, sortings, strings, trees, two pointers

Pinkie Pie Eats Patty-cakes

constructive algorithms, greedy, math, sortings

Equivalent Strings

divide and conquer, hashing, sortings, strings

Xenia and Colorful Gems

binary search, greedy, math, sortings, two pointers

Array Destruction

brute force, constructive algorithms, data structures, greedy, implementation, sortings

Spring Cleaning

*special problem, greedy, sortings

Geometry Horse

greedy, implementation, sortings, two pointers

Points and Segments (easy)

constructive algorithms, sortings

Dima and Two Sequences

combinatorics, math, sortings

Cards Sorting

data structures, implementation, sortings

Polycarp's phone book

data structures, implementation, sortings

Anton and Lines

geometry, sortings

Skyscrapers

implementation, sortings

Rectangles

geometry, implementation, sortings

Hacker, pack your bags!

binary search, greedy, implementation, sortings

Day at the Beach

sortings

Restaurant

dp, greedy, sortings

Maximum Submatrix 2

data structures, dp, implementation, sortings

Multi-Subject Competition

greedy, sortings

Decorate Apple Tree

constructive algorithms, dfs and similar, dp, graphs, greedy, sortings, trees

Ilya and Sticks

greedy, math, sortings

Bombs

greedy, implementation, sortings

Vasya and Basketball

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

Equal Frequencies

brute force, constructive algorithms, greedy, implementation, sortings, strings

Maximal Intersection

greedy, math, sortings

Two Arrays and Sum of Functions

greedy, math, sortings

Seating Arrangements (hard version)

data structures, greedy, implementation, sortings, two pointers

Tree Infection

binary search, greedy, sortings, trees

Stas and the Queue at the Buffet

greedy, math, sortings

To Add or Not to Add

binary search, sortings, two pointers

Cutting Out

binary search, sortings

New Year Permutation

dfs and similar, dsu, graphs, greedy, math, sortings

MP3

sortings, two pointers

Divide and Summarize

binary search, brute force, data structures, divide and conquer, implementation, sortings

Playlist

brute force, data structures, sortings

Welfare State

binary search, brute force, data structures, sortings

K for the Price of One (Hard Version)

dp, greedy, sortings

Equalizing by Division (hard version)

brute force, math, sortings

PriceFixed

binary search, greedy, implementation, sortings, two pointers

Sequence and Swaps

dp, greedy, sortings

Set or Decrease

binary search, brute force, greedy, sortings

Counting Kangaroos is Fun

binary search, greedy, sortings, two pointers

Mafia

binary search, math, sortings

Advertising Agency

combinatorics, math, sortings

Reading Books (easy version)

data structures, greedy, sortings

Phoenix and Distribution

constructive algorithms, greedy, sortings, strings

Fox And Names

dfs and similar, graphs, sortings

Hilbert's Hotel

math, number theory, sortings

Constructing the Array

constructive algorithms, data structures, sortings

Linova and Kingdom

dfs and similar, dp, greedy, sortings, trees

Печать условий

constructive algorithms, greedy, sortings

Bus

*special problem, implementation, sortings

Oh Sweet Beaverette

data structures, sortings

Physical Education

sortings

Lie or Truth

*special problem, constructive algorithms, implementation, sortings

Young Table

implementation, sortings

Lawnmower

greedy, sortings

Multitasking

greedy, implementation, sortings, two pointers

Sereja and Swaps

brute force, sortings

Do you want a date?

implementation, math, sortings

Checkpoints

greedy, implementation, sortings

Sorting the Coins

dsu, implementation, sortings, two pointers

Division into Teams

greedy, math, sortings

Misha and Forest

constructive algorithms, data structures, greedy, sortings, trees

Makes And The Product

combinatorics, implementation, math, sortings

Photo of The Sky

brute force, implementation, math, sortings

Nested Segments

greedy, implementation, sortings

Median

greedy, math, sortings

The Party and Sweets

binary search, constructive algorithms, greedy, implementation, math, sortings, two pointers

History

sortings

Pasha and Tea

constructive algorithms, implementation, math, sortings

Minimize the error

data structures, greedy, sortings

Effects of Anti Pimples

combinatorics, number theory, sortings

Nastya Is Transposing Matrices

constructive algorithms, sortings

Kayaking

brute force, greedy, sortings

Division and Union

sortings

Two TVs

data structures, greedy, sortings

Yet Another Array Partitioning Task

constructive algorithms, greedy, sortings

Modulo Equality

brute force, sortings

A Tale of Two Lands

binary search, sortings, two pointers

The Child and Set

bitmasks, greedy, implementation, sortings

Nastya and Potions

dfs and similar, dp, graphs, sortings

Orray

bitmasks, brute force, greedy, math, sortings

k-Multiple Free Set

binary search, greedy, sortings

The Humanoid

brute force, dp, sortings

Maximum Crossings (Hard Version)

data structures, divide and conquer, sortings

Search in Parallel

constructive algorithms, greedy, sortings

13th Labour of Heracles

data structures, greedy, sortings, trees

Smilo and Monsters

binary search, constructive algorithms, greedy, sortings, two pointers

The Morning Star

combinatorics, data structures, geometry, implementation, math, sortings

Phoenix and Socks

greedy, sortings, two pointers

Quests

binary search, greedy, sortings

Greetings

data structures, divide and conquer, sortings

Power of Points

math, sortings

Interesting Story

greedy, sortings, strings