Forbidden Subsequence

constructive algorithms, greedy, sortings, strings

Minimum Notation

data structures, greedy, math, sortings

2^Sort

data structures, dp, sortings, two pointers

GukiZ and Contest

brute force, implementation, sortings

Berland Regional

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

Two Arrays

greedy, math, sortings

Deja Vu

brute force, math, sortings

Longest Strike

data structures, greedy, implementation, sortings, two pointers

Elementary Particles

brute force, greedy, sortings

Jeff and Periods

implementation, sortings

A-B-C Sort

constructive algorithms, implementation, sortings

Air Conditioner

dp, greedy, implementation, sortings, two pointers

Hemose Shopping

constructive algorithms, dsu, math, sortings

Dominated Subarray

greedy, implementation, sortings, strings, two pointers

Non-zero Segments

constructive algorithms, data structures, greedy, sortings

Equalize the Array

binary search, data structures, greedy, math, sortings

Saving the City

dp, greedy, math, sortings

Journey Planning

data structures, dp, greedy, math, sortings

Equalize

binary search, greedy, sortings, two pointers

Sort with Step

brute force, math, sortings

Digital Logarithm

data structures, greedy, sortings

Eastern Exhibition

binary search, geometry, shortest paths, sortings

Prof. Slim

greedy, implementation, sortings

Big Segment

implementation, sortings

Hilbert's Hotel

math, number theory, sortings

Appleman and Toastman

greedy, sortings

Fox And Names

dfs and similar, graphs, sortings

Parity Shuffle Sorting

constructive algorithms, sortings

Ehab Is an Odd Person

sortings

Chat Order

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

Running for Gold

combinatorics, graphs, greedy, sortings

Two Shuffled Sequences

constructive algorithms, sortings

Helmets in Night Light

greedy, sortings

The Delivery Dilemma

binary search, greedy, sortings

Knapsack

constructive algorithms, greedy, sortings

Prefix Sum Addicts

constructive algorithms, greedy, math, sortings

Olympiad

implementation, sortings

Sage's Birthday (hard version)

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

Swap and Reverse

constructive algorithms, greedy, sortings, strings

Playing in a Casino

math, sortings

Balanced Tunnel

data structures, sortings, two pointers

Split Sort

greedy, math, sortings

Paprika and Permutation

binary search, greedy, math, sortings

Doggo Recoloring

implementation, sortings

Birthday

binary search, greedy, sortings

Trust Nobody

brute force, greedy, implementation, sortings

Masha and a Beautiful Tree

dfs and similar, divide and conquer, graphs, sortings, trees

2D Traveling

geometry, math, shortest paths, sortings

Lamps

greedy, sortings

Virus

greedy, implementation, sortings

Toy Blocks

binary search, greedy, math, sortings

Power Sequence

brute force, math, number theory, sortings

Two Arrays

greedy, math, sortings

Lunar New Year and Number Division

greedy, implementation, math, sortings

Pursuit

binary search, brute force, greedy, sortings

Phoenix and Distribution

constructive algorithms, greedy, sortings, strings

Swaps

greedy, math, sortings

Devu, the Dumb Guy

implementation, sortings

Filya and Homework

implementation, sortings

Queue Sort

greedy, implementation, sortings

Incinerate

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

Game on Ranges

brute force, dfs and similar, implementation, sortings

Fight with Monsters

greedy, sortings

Air Conditioners

data structures, dp, implementation, shortest paths, sortings, two pointers

Emotes

greedy, math, sortings

Make It Permutation

brute force, greedy, sortings

Sweets Eating

dp, greedy, math, sortings

Kuroni and the Gifts

brute force, constructive algorithms, greedy, sortings

Seating Arrangements (easy version)

data structures, greedy, sortings

Number Circle

greedy, math, sortings

Vanya and Exams

greedy, sortings

Great Graphs

constructive algorithms, graphs, greedy, shortest paths, sortings

Array Splitting

greedy, sortings

Reverse a Substring

implementation, sortings, strings

AquaMoon and Strange Sort

sortings

Elemental Decompress

constructive algorithms, greedy, implementation, sortings

Unlucky Ticket

greedy, sortings

Deep Down Below

binary search, greedy, sortings

Jumbo Extra Cheese 2

geometry, greedy, sortings

Reading Books (easy version)

data structures, greedy, sortings

The Child and Toy

graphs, greedy, sortings

Petya and Staircases

implementation, sortings

Boxers

greedy, sortings

Anna and the Valentine's Day Gift

games, greedy, math, sortings

Vika and the Bridge

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

DIY Wooden Ladder

greedy, math, sortings

Candy Box (easy version)

greedy, sortings

Glory Addicts

greedy, implementation, sortings

Going to the Cinema

brute force, greedy, sortings

Close Tuples (easy version)

binary search, combinatorics, math, sortings, two pointers

Sagheer and Nubian Market

binary search, sortings

Alice and the Cake

data structures, greedy, implementation, sortings

Kill `Em All

greedy, sortings

Morning Jogging

constructive algorithms, greedy, sortings

Collecting Game

binary search, dp, greedy, sortings, two pointers

Advertising Agency

combinatorics, math, sortings

Wooden Toy Festival

binary search, greedy, sortings

Nastya and an Array

implementation, sortings

Interesting Story

greedy, sortings, strings

Trace

geometry, sortings