Tape

greedy, sortings

Sasha and One More Name

constructive algorithms, hashing, strings

Sasha and a Bit of Relax

dp, implementation

Array and Segments (Easy version)

brute force, greedy, implementation

Diverse Garland

constructive algorithms, dp, greedy

Compression

dp, implementation, math, number theory

Lunar New Year and a Wander

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

Lunar New Year and Food Ordering

data structures, implementation

Ayoub and Lost Array

combinatorics, dp, math

Grid game

constructive algorithms, implementation

Monotonic Renumeration

combinatorics, sortings

Balanced Ternary String

greedy, strings

Array K-Coloring

greedy, sortings

Polycarp's New Job

implementation

Division and Union

sortings

Sum in the tree

constructive algorithms, dfs and similar, greedy, trees

Yuhao and a Parenthesis

greedy, implementation

Easy Problem

dp

Polygon for the Angle

brute force, geometry

Circular Dance

implementation

Powers Of Two

bitmasks, greedy

Beautiful Graph

dfs and similar, graphs

Prefixes and Suffixes

strings

New Year and the Permutation Concatenation

combinatorics, dp, math

New Year and the Sphere Transmission

math, number theory

Similar Arrays

constructive algorithms

Guest Student

math

Easy Chess

constructive algorithms

Ehab and a 2-operation task

constructive algorithms, greedy, math

Minimum Diameter Tree

constructive algorithms, implementation, trees

Connect Three

implementation, math

The Fair Nut and String

combinatorics, dp, implementation

The Fair Nut and the Best Path

data structures, dp, trees

Maximum Diameter Graph

constructive algorithms, graphs, implementation

Multi-Subject Competition

greedy, sortings

Vova and Trophies

greedy

Maximum Distance

dsu, graphs, shortest paths, sortings

Colorful Bricks

combinatorics, dp, math

Farewell Party

constructive algorithms, implementation

Masha and two friends

implementation

Thematic Contests

greedy, sortings

Cutting Out

binary search, sortings

Edge Deletion

graphs, greedy, shortest paths

Berland Fair

binary search, brute force, data structures, greedy

Vasya and Robot

binary search, two pointers

BerOS File Suggestion

brute force, implementation

Debate

greedy

Colored Rooks

constructive algorithms, graphs

Birthday

math

Multihedgehog

dfs and similar, graphs, shortest paths

Binary Numbers AND Sum

data structures, implementation, math

Boxes Packing

binary search, implementation

Books Queries

implementation

Heaters

greedy, two pointers

Make It Equal

greedy

Labyrinth

graphs, shortest paths

Fun with Integers

dfs and similar, graphs, implementation, math

Banh-mi

greedy, implementation, math

Math

greedy, math, number theory

Multiplicity

data structures, dp, implementation, math, number theory

Views Matter

greedy, implementation, sortings

Maximum Subrectangle

binary search, implementation, two pointers

Sequence Transformation

constructive algorithms, math

DDoS

*special problem, brute force

Decorate Apple Tree

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

Pick Heroes

greedy, implementation, interactive, sortings

Divide Candies

math, number theory

Candies Distribution

constructive algorithms, implementation

Bicolorings

bitmasks, dp

Vasya and Multisets

brute force, dp, greedy, implementation, math

Splitting money

implementation

Space Formula

greedy

Palindrome Pairs

hashing, strings

The Tower is Going Home

binary search, two pointers

Mysterious Crime

brute force, combinatorics, math, meet-in-the-middle, two pointers

Smallest Word

constructive algorithms, greedy, implementation

Petya and Array

data structures, divide and conquer, two pointers

Array Product

constructive algorithms, greedy, math

Glider

binary search, data structures, two pointers

Coffee Break

binary search, data structures, greedy, two pointers

Slime

dp, greedy, implementation

Valid BFS?

dfs and similar, graphs, shortest paths, trees

Vasya and Arrays

greedy, two pointers

Diagonal Walking v.2

math

Enlarge GCD

number theory

Permutation Game

brute force, dp, games

Playing Piano

constructive algorithms, dp

Cram Time

greedy

Curiosity Has No Limits

Vasya and Triangle

geometry, number theory

Maximal Intersection

greedy, math, sortings

Rectangles

geometry, implementation, sortings

Mouse Hunt

dfs and similar, graphs

Minimum Value Rectangle

greedy

Plasticine zebra

constructive algorithms, implementation

Weakened Common Divisor

brute force, greedy, number theory

Array Restoration

constructive algorithms, data structures

Elections

brute force, greedy

The Phone Number

constructive algorithms, greedy

Vasya And The Matrix

constructive algorithms, flows, math