Flow Control

data structures, dsu, implementation

Palindromic Doubles

*special problem, data structures, dp

Journey

data structures, divide and conquer, graphs, trees

Sequence Transformation

brute force, data structures, dp, implementation, math

Codeforces Scoreboard

binary search, data structures, dp, geometry

Mahmoud and Ehab and the final stage

data structures, strings

Bakery

data structures, dsu

Mages and Monsters

data structures, geometry

MEXanization

data structures

MEX Tree Manipulation

data structures, trees

Two Rooted Trees

data structures, implementation, trees

Nene and the Passing Game

constructive algorithms, data structures, dsu, graphs, sortings

Frequency Mismatch (Easy Version)

binary search, data structures, divide and conquer, hashing, probabilities, trees

Digital Patterns

combinatorics, data structures, implementation, math

Cubes

data structures, dp, geometry, two pointers

Phoenix and Bits

bitmasks, brute force, data structures, sortings

Subset Trick

binary search, data structures

Caramel Clouds

data structures, dp, sortings

Three Arrays

data structures

Ball-Stackable

constructive algorithms, data structures, dp, trees

Cheat and Win

bitmasks, data structures, games, trees

Speckled Band

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

Landmarks

data structures, dp

Significant Cups

*special problem, binary search, data structures, two pointers

Just Kingdom

brute force, data structures, dfs and similar

Pebbles and Beads

data structures, geometry

Dune II: Battle For Arrakis

*special problem, data structures, greedy, math

The Third Grace

data structures, dp

Собачки и миски

data structures, greedy, sortings

Slalom

data structures, dp, sortings

Phoenix and Diamonds

binary search, data structures, sortings

The Fair Nut's getting crazy

data structures, implementation

Bully Sort

data structures, math

Meta-universe

data structures

Palindrome Addicts

data structures, strings

Impressive Harvesting of The Orchard

data structures

Berland.Taxi

data structures

Prefix Max Set Counting

data structures, dp, trees

Managing Telephone Poles

data structures, geometry

Hopping Around the Array

data structures, dp

Stations

data structures

Holy Diver

data structures

Lucky Pair

combinatorics, data structures, implementation

Take Metro

brute force, data structures, graphs

Antifibonacci Cut

bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math

Sasha and a Patient Friend

binary search, data structures, implementation

Tape Programming

data structures, implementation

Two Subtrees

data structures, trees

Secret Letters

data structures, dp, greedy

Local Deletions

binary search, data structures, implementation

Santa's Gift

data structures, trees

Looking for Owls

binary search, data structures, geometry, hashing, sortings

Ants

2-sat, data structures, trees

Range Diameter Sum

data structures, trees

Inverse Inversions

binary search, brute force, data structures

Evaluate RBS

data structures, geometry, implementation, math, sortings

Summer Oenothera Exhibition

data structures

Fishingprince Plays With Array Again

brute force, data structures, geometry, math

K Paths

combinatorics, data structures, dp, fft, math

The Fair Nut and Amusing Xor

data structures

Jumping Through the Array

binary search, data structures, graphs, two pointers

Train Tracks

data structures, trees

Chess Team Forming

*special problem, binary search, data structures, greedy

Line Distance

binary search, data structures, geometry

Split

binary search, data structures, dp, greedy

My Beautiful Madness

data structures, trees

Iron Man

data structures, geometry, trees

Greedy Elevator

data structures, implementation

Listening to Music

constructive algorithms, data structures

Sasha and Algorithm of Silence's Sounds

data structures, trees

A Certain Magical Party

combinatorics, data structures, greedy, sortings

Squares

constructive algorithms, data structures, dp, graphs, trees

Feeling Good

bitmasks, data structures

No Monotone Triples

data structures

The Potion of Great Power

*special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers

Palindromic Problem

binary search, data structures, hashing, string suffix structures, strings

MCMF?

data structures, flows, graphs, greedy, sortings, two pointers

Nauuo and ODT

data structures

Heroes of Making Magic III

data structures

Permutation for Burenka

data structures, graph matchings, greedy, math, trees

Strange Permutation

binary search, combinatorics, data structures, dp, graphs, implementation, two pointers

Tricky Password

data structures

Alien DNA

data structures, dsu, trees

Sereja and Dividing

data structures

Median Mountain Range

data structures

Rainbow Rectangles

data structures, sortings, two pointers

Sharti

data structures, games

Mirror Room

data structures, implementation

Minimize Inversions Number

data structures, greedy, math, sortings

Beautiful Tree

data structures, dfs and similar, graphs, implementation, trees

Eye-Pleasing City Park Tour

data structures, trees

Triameter

binary search, data structures, dfs and similar, trees

Gates to Another World

bitmasks, data structures, dsu, two pointers

Boring Card Game

data structures, greedy, trees

Perfect Matching

data structures, divide and conquer, interactive, trees

New Year and Social Network

data structures, graph matchings, graphs, math, trees

Reindeer Games

binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths

Tree or not Tree

data structures, divide and conquer, implementation, trees

Omkar and Tours

data structures, divide and conquer, sortings, trees

Oleg and chess

data structures, divide and conquer, flows, graph matchings