Yet Another Problem On a Subsequence

combinatorics, dp

Anton and Lines

geometry, sortings

Football

constructive algorithms

Olya and Energy Drinks

data structures, dfs and similar, graphs, shortest paths

Dasha and Very Difficult Problem

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

Arthur and Table

brute force, data structures, dp, greedy, math, sortings

String Reconstruction

data structures, greedy, sortings, strings

Nearest vectors

geometry, sortings

Star

*special problem, combinatorics

Not a Geometry Problem

*special problem, *special problem, constructive algorithms, geometry, math

Replace With Product

brute force, greedy, math

Mahmoud and Ehab and the xor

constructive algorithms

Sequence Sorting

dp, greedy, two pointers

Split Plus K

greedy, math, number theory

Secrets

greedy

Masha-forgetful

brute force, constructive algorithms, dp, hashing, implementation, strings

Two Seals

brute force, implementation

Amr and Chemistry

brute force, graphs, greedy, math, shortest paths

Dima and Sequence

implementation, math

Kate and imperfection

greedy, implementation, math, number theory, sortings, two pointers

Yet Another Ball Problem

constructive algorithms, implementation

We Need More Bosses

dfs and similar, graphs, trees

Median String

bitmasks, math, number theory, strings

Median Smoothing

implementation

Copying Data

data structures

Tenzing and His Animal Friends

constructive algorithms, graphs, greedy

Flying Saucer Segments

math

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Curiosity Has No Limits

Playing Piano

constructive algorithms, dp

Present

binary search, bitmasks, constructive algorithms, data structures, math, sortings

Palindromic characteristics

brute force, dp, hashing, strings

Alice, Bob, Two Teams

brute force, constructive algorithms

Anagram Search

implementation, strings

Watch the Videos

binary search, constructive algorithms, two pointers

Flag of Berland

brute force, implementation

White Lines

brute force, data structures, dp, implementation, two pointers

Maximum Distance

dsu, graphs, shortest paths, sortings

Two Squares

geometry, implementation

Moving Points

data structures, divide and conquer, implementation, sortings

Yet Another Division Into Teams

dp, greedy, sortings

Shuffle

combinatorics, math, two pointers

Road Reform

dsu, graphs, greedy

Cleaning

data structures, dp, greedy, math

Jzzhu and Chocolate

greedy, math

Counting Rhombi

brute force, math

Potions Homework

implementation, sortings

Dima and Hares

dp, greedy

Fun with Integers

dfs and similar, graphs, implementation, math

Babaei and Birthday Cake

data structures, dp

Reverse Sort Sum

constructive algorithms, data structures, greedy, implementation, math, two pointers

Error Correct System

greedy

Xor-MST

bitmasks, constructive algorithms, data structures

Boring Segments

data structures, sortings, trees, two pointers

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Toy Train

brute force, greedy

Maximum Subarray

data structures, dp, greedy, two pointers

Pattern

implementation, strings

Valid Sets

dfs and similar, dp, math, trees

Martian Dollar

brute force

What is for dinner?

greedy, implementation

Road to Cinema

binary search, greedy, sortings

Find Color

constructive algorithms, geometry, implementation, math

Destroying Roads

constructive algorithms, graphs, shortest paths

Cutting Figure

constructive algorithms, graphs, trees

Koa and the Beach (Easy Version)

brute force, dp, greedy

Almost Sorted

binary search, combinatorics, constructive algorithms, implementation

Guess The Maximums

binary search, implementation, interactive, math

Lazyland

Unfair Poll

binary search, constructive algorithms, implementation, math

Placing Jinas

combinatorics, math

Subsequence Counting

bitmasks, constructive algorithms, greedy, implementation

Fish Graph

brute force, constructive algorithms, dfs and similar, graphs

Sereja and Swaps

brute force, sortings

Magic Stones

constructive algorithms, math, sortings

Number of Parallelograms

geometry

Circus

brute force, greedy, math, strings

Devu and Partitioning of the Array

brute force, constructive algorithms, implementation, number theory

Average Numbers

brute force, implementation

Birthday Gift

bitmasks, brute force, constructive algorithms, greedy, implementation

Balls of Buma

Array Partition

binary search, data structures, greedy, two pointers

Dynasty Puzzles

dp

Nested Segments

data structures, sortings

The Brand New Function

bitmasks

Balanced Playlist

binary search, data structures, implementation

Hard Work

strings

Multipliers

math, number theory

Martial Arts Tournament

binary search, brute force, greedy, math

Jon Snow and his Favourite Number

brute force, dp, implementation, sortings

The Golden Age

brute force, math

Robot Factory

bitmasks, dfs and similar

Rarity and New Dress

dfs and similar, dp, implementation, shortest paths

Connecting Universities

dfs and similar, dp, graphs, trees

Sereja and Mirroring

implementation

Missile Silos

data structures, dfs and similar, graphs, shortest paths

Toy Train (Simplified)

brute force, greedy

Kay and Snowflake

data structures, dfs and similar, dp, trees

Two Sets

2-sat, dfs and similar, dsu, graph matchings, greedy

ZgukistringZ

brute force, constructive algorithms, implementation, strings