Kalila and Dimna in the Logging Industry

dp, geometry

Destroying Roads

constructive algorithms, graphs, shortest paths

Guess The Maximums

binary search, implementation, interactive, math

Weakness and Poorness

ternary search

Fire

dp, sortings

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

Rarity and New Dress

dfs and similar, dp, implementation, shortest paths

Chocolate Bar

brute force, dp

Cut and Stick

binary search, data structures, greedy, implementation, sortings

Case of Fugitive

data structures, greedy, sortings

GCD Counting

data structures, dfs and similar, dp, number theory, trees

Valid Sets

dfs and similar, dp, math, trees

Pair Of Lines

geometry

Babaei and Birthday Cake

data structures, dp

Ehab's Last Corollary

constructive algorithms, dfs and similar, graphs, greedy, implementation, trees

Maximize the Remaining String

brute force, data structures, dp, greedy, strings

New Year Tree

bitmasks, data structures, trees

Divide by Three

dp, greedy, math, number theory

Garland

dfs and similar, graphs, greedy, trees

Money Transfers

constructive algorithms, data structures, greedy, sortings

Multipliers

math, number theory

DZY Loves Modification

brute force, data structures, greedy

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Balanced Playlist

binary search, data structures, implementation

Buds Re-hanging

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

Two Sets

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

Yet Another Division Into Teams

dp, greedy, sortings

Reducing Delivery Cost

brute force, graphs, shortest paths

Nearest Beautiful Number (hard version)

bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy

Danil and a Part-time Job

bitmasks, data structures, trees

R2D2 and Droid Army

binary search, data structures, two pointers

Square Subsets

bitmasks, combinatorics, dp, math

Remainder Problem

brute force, data structures, implementation

Decreasing Debts

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

Moving to the Capital

dfs and similar, dp, graphs, shortest paths

Height All the Same

combinatorics, constructive algorithms, math, matrices

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Roman and Numbers

bitmasks, brute force, combinatorics, dp, number theory

Ilya And The Tree

dfs and similar, graphs, math, number theory, trees

Water Balance

data structures, geometry, greedy

XOR Inverse

bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees

Unshuffling a Deck

constructive algorithms, implementation

Present

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

Segment Tree

data structures, dsu, graphs, trees

CGCDSSQ

brute force, data structures, math

Magic Gems

dp, math, matrices

Divisibility by 25

brute force, greedy

Array Partition

binary search, data structures, greedy, two pointers

Olya and Energy Drinks

data structures, dfs and similar, graphs, shortest paths

Cut

binary search, data structures, dp, graphs, number theory, two pointers

Boring Segments

data structures, sortings, trees, two pointers

Game with modulo

binary search, constructive algorithms, interactive

Nash Matrix

constructive algorithms, dfs and similar, graphs, implementation

Round Subset

dp, math

Omkar and Duck

bitmasks, constructive algorithms, interactive, math

Captain Marmot

brute force, geometry

Kamil and Making a Stream

math, number theory, trees

Number With The Given Amount Of Divisors

brute force, dp, number theory

Strip

binary search, data structures, dp, two pointers

Decryption

constructive algorithms, implementation, math, number theory

Increasing Frequency

binary search, dp, greedy

Glass Half Spilled

dp

Soldier and Traveling

flows, graphs, math

Robin Hood

binary search, greedy

Anton and Tree

dfs and similar, dp, trees

Recovering BST

brute force, dp, math, number theory, trees

Xor-Paths

bitmasks, brute force, dp, meet-in-the-middle

Sleepy Game

dfs and similar, dp, games, graphs

Messenger Simulator

data structures

Permutation Shift

brute force, combinatorics, constructive algorithms, dfs and similar, dsu, graphs, math

Kirk and a Binary String (hard version)

data structures, greedy, math, strings

Roman Digits

brute force, combinatorics, dp, greedy, math

Lucky Common Subsequence

dp, strings

Matching vs Independent Set

constructive algorithms, graphs, greedy, sortings

Mishka and Interesting sum

data structures

Inna and Pink Pony

greedy, implementation

Array and Operations

flows, graph matchings, number theory

Drazil and Tiles

constructive algorithms, greedy

Gourmet choice

dfs and similar, dp, dsu, graphs, greedy

Mahmoud and a Dictionary

data structures, dfs and similar, dp, dsu, graphs

Kirk and a Binary String (easy version)

brute force, greedy, strings

Common Number

binary search, combinatorics, dp, math

Xor Tree

binary search, bitmasks, data structures, divide and conquer, dp, trees

Equalizing Two Strings

constructive algorithms, sortings, strings

Gluttony

constructive algorithms, greedy

Vasya and Good Sequences

bitmasks, dp

Fixed Points

binary search, brute force, dp

Triangular Paths

constructive algorithms, graphs, math, shortest paths, sortings

Euclid's nightmare

bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings

Graph Coloring

dfs and similar, dp, graphs

World of Darkraft: Battle for Azathoth

brute force, data structures, sortings

Complete the Projects (easy version)

greedy

Equation

math

Cashback

data structures, dp, greedy, math

New Year and Conference

binary search, data structures, hashing, sortings

Guess the Permutation

binary search, combinatorics, interactive, math

Pencils and Boxes

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

Ability To Convert

constructive algorithms, dp, greedy, math, strings

New Year's Puzzle

brute force, dp, graph matchings, greedy, sortings

Flying Sort (Easy Version)

dp, greedy, two pointers