Masha and Bears

brute force, implementation

Ela and Crickets

constructive algorithms, games, implementation, math

Palindromic Matrix

constructive algorithms, implementation

Makes And The Product

combinatorics, implementation, math, sortings

Center Alignment

implementation, strings

Cubes for Masha

brute force, implementation

Perform Easily

binary search, brute force, dp, implementation, sortings, two pointers

Sorting by Subsequences

dfs and similar, dsu, implementation, math, sortings

Knights of a Polygonal Table

greedy, implementation, sortings

Difference Array

brute force, data structures, implementation, sortings

Ilya and Matrix

constructive algorithms, greedy, implementation, sortings

Busy Robot

implementation

Point on Spiral

brute force, geometry, implementation

Digits Sequence (Easy Edition)

implementation

Max GEQ Sum

binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers

Pyramid of Glasses

implementation, math, math

Did you mean...

dp, greedy, implementation

Petya and Catacombs

dsu, greedy, implementation, trees

Bicycles

graphs, greedy, implementation, shortest paths, sortings

Connect Three

implementation, math

Guest From the Past

implementation, math

Weather

dp, implementation

Banh-mi

greedy, implementation, math

Voting for Photos

*special problem, constructive algorithms, implementation

Cyclic Operations

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

Vessels

data structures, dsu, implementation, trees

Rating Compression

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

Boxes Packing

binary search, implementation

Minimum Diameter Tree

constructive algorithms, implementation, trees

Santa Claus and Keyboard Check

implementation, strings

King's Task

brute force, graphs, implementation

Escape

implementation, math

1D Sokoban

binary search, dp, greedy, implementation, two pointers

Chessboard

bitmasks, brute force, implementation

Seating On Bus

implementation

Running Student

brute force, geometry, implementation

Mike and Cellphone

brute force, constructive algorithms, implementation

Finding Team Member

brute force, implementation, sortings

Need for Pink Slips

bitmasks, brute force, dfs and similar, implementation, math, probabilities

Trains

implementation, math

Little Xor

brute force, implementation

Cut and Paste

implementation, math

Berserk Monsters

brute force, data structures, dsu, implementation, math

African Crossword

implementation, strings

Phone Numbers

implementation, strings

Internet Address

implementation, strings

After Training

data structures, implementation, math

Useful Decomposition

implementation, trees

Sorting the Coins

dsu, implementation, sortings, two pointers

Ksusha the Squirrel

brute force, implementation

Laurenty and Shop

implementation

Semifinals

implementation, sortings

Food on the Plane

implementation, math

Array Repetition

binary search, brute force, dsu, implementation, math

Meeting

implementation

The Contest

implementation

Primes or Palindromes?

brute force, implementation, math, number theory

Feeding Chicken

constructive algorithms, greedy, implementation

Complete Tripartite

brute force, constructive algorithms, graphs, hashing, implementation

The Robot

brute force, implementation

Maximum Submatrix 2

data structures, dp, implementation, sortings

Very Suspicious

binary search, brute force, geometry, greedy, implementation, math

Binary Table (Hard Version)

constructive algorithms, graphs, greedy, implementation

Luba And The Ticket

brute force, greedy, implementation

Room Leader

implementation

505

bitmasks, brute force, constructive algorithms, dp, greedy, implementation

Ksyusha and Chinchilla

constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees

Help Kingdom of Far Far Away 2

implementation, strings

Tiling with Hexagons

implementation, math

Cloud of Hashtags

binary search, greedy, implementation, strings

Mystical Mosaic

greedy, implementation

Alice and Hairdresser

dsu, implementation

Code Parsing

implementation

Desktop Rearrangement

data structures, greedy, implementation

Extract Numbers

implementation, strings

Whose sentence is it?

implementation, strings

Magical Array

constructive algorithms, hashing, implementation, math

Video Posts

implementation

Autocomplete

implementation

Maximum Subrectangle

binary search, implementation, two pointers

Irrational problem

implementation, number theory

Watering Flowers

implementation

Triangle

brute force, geometry, implementation, math

Music

implementation, math

GCD of an Array

brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers

Not simply beatiful strings

implementation

King of Thieves

brute force, implementation

Remainder Problem

brute force, data structures, implementation

Find Maximum

implementation, math, number theory

Settlers' Training

implementation

Long Jumps

binary search, greedy, implementation

Nauuo and Cards

greedy, implementation

s-palindrome

implementation, strings

Checkpoints

greedy, implementation, sortings

Obtain a Permutation

greedy, implementation, math

Bayan Bus

implementation

Restore Permutation

binary search, data structures, greedy, implementation

Do you want a date?

implementation, math, sortings

Clique Problem

data structures, dp, greedy, implementation, sortings

Ternary Logic

implementation, math