1-2-3

graphs, implementation

Weird Chess

brute force, constructive algorithms, implementation

Promocodes with Mistakes

*special problem, brute force, constructive algorithms, implementation

Sereja ans Anagrams

binary search, data structures

Permutations

greedy

Perfect Groups

dp, math, number theory

Kindergarten

data structures, dp, greedy

Datatypes

math, sortings

Ivan and Powers of Two

greedy, implementation

Anthem of Berland

dp, strings

Mike and Fish

constructive algorithms, dfs and similar, graphs

Learning to Paint

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

Mr. Kitayuta's Technology

dfs and similar

Lawnmower

greedy, sortings

Grime Zoo

brute force, greedy, implementation, strings

K-th Path

brute force, constructive algorithms, shortest paths, sortings

Tree Constructing

constructive algorithms, graphs

Fox and Minimal path

bitmasks, constructive algorithms, graphs, implementation, math

The Great Game

*special problem

Freedom of Choice

brute force, greedy, implementation

Prime Swaps

greedy, sortings

Making Sequences is Fun

binary search, implementation, math

388535 (Hard Version)

bitmasks, brute force, data structures, math

Machine Learning

brute force, data structures

Keshi in Search of AmShZ

graphs, greedy, shortest paths

Party

brute force, dfs and similar, dsu, graphs

Polycarp and Snakes

brute force, implementation

Artsem and Saunders

constructive algorithms, dsu, math

Pinball

binary search, data structures, implementation, math, two pointers

One-Dimensional Puzzle

combinatorics, math, number theory

Cycles

binary search, constructive algorithms, graphs, greedy

Subarray Sorting

data structures, sortings

Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths

data structures, dfs and similar, trees

Party

dfs and similar, dsu, graphs

XOR Tree

bitmasks, data structures, dfs and similar, dsu, greedy, trees

Math Show

brute force, greedy

Friends or Not

*special problem, greedy, implementation

Mathematical Analysis Rocks!

constructive algorithms, implementation, math

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Sheikh (Hard Version)

binary search, bitmasks, brute force, greedy, implementation, two pointers

String

brute force, constructive algorithms, hashing, implementation, string suffix structures, strings

Colorings and Dominoes

combinatorics, dp, greedy, math

Sad powers

binary search, math, number theory

Stack Sorting

constructive algorithms, data structures, greedy, implementation

Guess Game

bitmasks, data structures, games, math, probabilities, sortings, strings, trees

Karen and Supermarket

brute force, dp, trees

Name Quest

*special problem, greedy

PolandBall and Polygon

data structures

Ezzat and Grid

data structures, dp, greedy

You Are Given a WASD-string...

brute force, data structures, dp, greedy, implementation, math, strings

Berland Bingo

implementation

Multicolored Markers

binary search, brute force, math, number theory

Sum Over Zero

data structures, dfs and similar, dp

Parallel Universes (Easy)

implementation

Madoka and The Best University

math, number theory

Jeremy Bearimy

dfs and similar, graphs, greedy, trees

Exponential notation

implementation, strings

Bracket Sequence

data structures, expression parsing, implementation

Let's Go Rolling!

dp, sortings

Tree Array

brute force, combinatorics, dp, graphs, math, probabilities, trees

Прокат велосипедов

*special problem, greedy, implementation

Fixed Point Removal

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

LuoTianyi and the Floating Islands (Hard Version)

combinatorics, dfs and similar, math, probabilities, trees

Buses

binary search, data structures, dp

Dogeforces

constructive algorithms, data structures, dfs and similar, divide and conquer, dsu, greedy, sortings, trees

Garden of the Sun

constructive algorithms, graphs

Trees of Tranquillity

data structures, dfs and similar, greedy, trees

Jury Meeting

greedy, sortings, two pointers

Hot Black Hot White

constructive algorithms, math

Petya and Construction Set

constructive algorithms, graphs, math, sortings, trees

Chat

*special problem, dp

Prefix Product Sequence

constructive algorithms, math, number theory

Multihedgehog

dfs and similar, graphs, shortest paths

Equilibrium

data structures, dp, greedy

New Year and Ancient Prophecy

dp, hashing, strings

Broken checker

*special problem, brute force

Vika and Bonuses

binary search, brute force, math, ternary search

Banana

binary search, constructive algorithms, greedy

Fafa and Ancient Alphabet

math, probabilities

Count Binary Strings

data structures, dp

Upgrading Array

dp, greedy, math, number theory

Counting Rectangles is Fun

brute force, divide and conquer, dp

Fancy Number

brute force, greedy, sortings, strings

Another Filling the Grid

combinatorics, dp, math

Paint the Tree

dp, sortings, trees

Escape Through Leaf

data structures, dp, geometry

Till I Collapse

data structures, divide and conquer

Cardiogram

implementation

Leaving Auction

binary search, data structures

Text Editor

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

Product Oriented Recurrence

dp, math, matrices, number theory

Minimization

dp, greedy, sortings

Maximum Balanced Circle

constructive algorithms, dp, greedy, two pointers

Cards and Joy

dp

Lucky Transformation

strings

Spongebob and Squares

brute force, math

Priority Queue

combinatorics, dp, implementation, math, ternary search

Range Deleting

binary search, combinatorics, data structures, two pointers

Online Courses In BSU

*special problem, dfs and similar, graphs, implementation

Missing Numbers

binary search, constructive algorithms, greedy, math, number theory