Farmer John's Favorite Intern

data structures, dp, flows, trees

Parallel Swaps Sort

constructive algorithms, data structures

Crossing the Railways

data structures, dp

Doremy's Average Tree

data structures, dp, greedy, trees

LIS?

data structures, greedy, implementation

BinaryStringForces

constructive algorithms, data structures, dp

Ruler Of The Zoo

brute force, data structures

AquaMoon and Time Stop (easy version)

data structures, dp

Standard Graph Problem

data structures, graphs, greedy, trees

AquaMoon and Time Stop (hard version)

data structures, dp

Spaceship Crisis Management

binary search, data structures, geometry, sortings

Olympiad Training

binary search, data structures, dp, flows, geometry, implementation, sortings

Panda Meetups

data structures, dp, flows

Palindromic Magic

data structures, hashing, strings

Two Avenues

data structures, dfs and similar, graphs

Arranging Crystal Balls

data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory

AquaMoon and Potatoes

brute force, data structures, dp

Copium Permutation

constructive algorithms, data structures, greedy

Cut the pie

binary search, data structures, geometry

Ela Takes Dancing Class

binary search, data structures

Two Sequences

data structures, hashing, string suffix structures

Clubstep

binary search, brute force, data structures, greedy, trees

Optimal Encoding

brute force, data structures

Balanced Distribution

data structures, dp, greedy

LuoTianyi and Cartridge

data structures, trees

Willy-nilly, Crack, Into Release!

data structures, dp

Balance the Cards

constructive algorithms, data structures, divide and conquer, geometry, graphs, implementation

Red Blue Tree

data structures, implementation, trees

The Ultimate LIS Problem

data structures, greedy

Alphabetic Tree

binary search, data structures, dfs and similar, hashing, string suffix structures, strings, trees

Growing flowers

data structures

Flow Control

data structures, dsu, implementation

Journey

data structures, divide and conquer, graphs, trees

Cheat and Win

bitmasks, data structures, games, trees

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Speckled Band

data structures, divide and conquer, hashing, string suffix structures, strings

The Fair Nut's getting crazy

data structures, implementation

Bully Sort

data structures, math

Hopping Around the Array

data structures, dp

Holy Diver

data structures

Range Diameter Sum

data structures, trees

Jumping Through the Array

binary search, data structures, graphs, two pointers

My Beautiful Madness

data structures, trees

Minimize Inversions Number

data structures, greedy, math, sortings

Beautiful fountains rows

data structures

Intervals of Intervals

binary search, data structures, two pointers

Replace

binary search, data structures

Railway Construction

brute force, constructive algorithms, data structures, graphs, shortest paths

Lada Malina

data structures, geometry

Pisces

data structures, flows, trees

Upside Down

data structures, string suffix structures, strings, trees

Multiple of Three Cycles

combinatorics, data structures, dp, dsu, math

Balls and Pockets

data structures

Rap God

data structures, dfs and similar, hashing, strings, trees

Turing's Award

data structures, dp

Treasure Hunt

data structures, divide and conquer, two pointers

Rivalries

constructive algorithms, data structures, greedy

Doremy's Paint 2

data structures

Arpa’s abnormal DNA and Mehrdad’s deep interest

data structures, string suffix structures

The Riddle of the Sphinx

binary search, data structures, data structures, interactive

Iqea

data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees

Caramel Clouds

data structures, dp, sortings

Phoenix and Diamonds

binary search, data structures, sortings

Stations

data structures

Summer Oenothera Exhibition

data structures

Gregor and the Two Painters

data structures, divide and conquer, graphs, greedy, math

A task for substrings

data structures, string suffix structures, strings

Oleg and chess

data structures, divide and conquer, flows, graph matchings

Outermost Maximums

data structures, greedy

Exam

data structures, string suffix structures, trees

Matches Are Not a Child's Play

data structures, trees

Can Bash Save the Day?

data structures, divide and conquer, graphs, trees

Niyaz and Small Degrees

data structures, dp, trees

Yuezheng Ling and Dynamic Tree

data structures, trees

Conference

data structures, flows

Nezzar and Tournaments

data structures, greedy

Moving Walkways

data structures, greedy, math

Burenka, an Array and Queries

data structures, math, number theory

Johnny and New Toy

data structures, implementation, math

Diamond Theft

data structures, greedy

Codeforces Scoreboard

binary search, data structures, dp, geometry

MEX Tree Manipulation

data structures, trees

MEXanization

data structures

Subset Trick

binary search, data structures

Palindrome Addicts

data structures, strings

Ball-Stackable

constructive algorithms, data structures, dp, trees

Fishingprince Plays With Array Again

brute force, data structures, geometry, math

The Fair Nut and Amusing Xor

data structures

Iron Man

data structures, geometry, trees

Squares

constructive algorithms, data structures, dp, graphs, trees

A Certain Magical Party

combinatorics, data structures, greedy, sortings

Permutation for Burenka

data structures, graph matchings, greedy, math, trees

Nauuo and ODT

data structures

Median Mountain Range

data structures

Rainbow Rectangles

data structures, sortings, two pointers

Gates to Another World

bitmasks, data structures, dsu, two pointers

Omkar and Tours

data structures, divide and conquer, sortings, trees

Arkady and Rectangles

data structures

Strange Sort

data structures, sortings

Rainbow Triples

binary search, data structures, flows, greedy