Conveyor Belts

data structures

Tournament

data structures, graphs

Zigu Zagu

constructive algorithms, data structures, greedy

Professor's task

data structures, geometry

Indie Album

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

Boring Queries

data structures, math, number theory

Jeff and Removing Periods

data structures

Best Edge Weight

data structures, dfs and similar, graphs, trees

Animals and Puzzle

binary search, data structures

Tree Queries

data structures, probabilities, trees

Tree Generator™

data structures, implementation, trees

Close Vertices

data structures, divide and conquer, trees

Permutation

data structures, divide and conquer, hashing

Difficult Mountain

data structures, dp, greedy, sortings

Fibonacci Additions

brute force, data structures, hashing, implementation, math

Cyclical Quest

data structures, string suffix structures, strings

Escape Through Leaf

data structures, dp, geometry

Serega and Fun

data structures

Holes

data structures, dsu

Recover Polygon (hard)

data structures

Moonwalk challenge

data structures, strings, trees

Inna and Babies

binary search, data structures, dsu, geometry, implementation

Heroes of Making Magic III

data structures

Sereja and Dividing

data structures

Eye-Pleasing City Park Tour

data structures, trees

Fafa and Array

data structures, greedy

Constrained Tree

constructive algorithms, data structures

Tourists

data structures, sortings

Dasha and Photos

brute force, data structures, dp, implementation

Maximum Waterfall

data structures, dp, graphs, sortings

Field Should Not Be Empty

brute force, data structures, divide and conquer

GCD is Greater

brute force, data structures, math, number theory

Keyboard Design

bitmasks, data structures, dp, string suffix structures, strings

Camping Groups

data structures, sortings

Forced Online Queries Problem

data structures, divide and conquer, dsu, graphs, trees

Power Tree

data structures, trees

Good Pairs

binary search, data structures, dp

Kuzya and Homework

data structures, number theory

Pairs of Paths

combinatorics, data structures, dfs and similar, dp, trees

Interval Cubing

data structures, math

Sonya and Bitwise OR

bitmasks, data structures, divide and conquer

Labyrinth Adventures

data structures, dp, matrices, shortest paths

Autocompletion

data structures, dfs and similar, dp

Strange Addition

data structures, dp, matrices

Pawns

data structures, divide and conquer, greedy

Phoenix and Memory

data structures, dfs and similar, graphs, greedy

Divan and a Cottage

binary search, data structures

Colorful Constructive

constructive algorithms, data structures, greedy

Power Sockets

binary search, data structures, greedy

Vladik and Entertaining Flags

data structures, dsu, graphs

Strange Array

data structures, greedy, sortings

Diverse Segments

data structures, two pointers

Delivery Club

binary search, data structures, dp

Yet Another LCP Problem

data structures, string suffix structures

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Doremy's Drying Plan (Hard Version)

data structures, dp

Choosing Subtree is Fun

binary search, data structures, dfs and similar, trees, two pointers

Top-Notch Insertions

combinatorics, data structures

Velepin and Marketing

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

Points Movement

data structures, dp, greedy, implementation, sortings

Optimize!

data structures

Bicolored Segments

data structures, dp, graph matchings, sortings

Death DBMS

data structures, string suffix structures, strings, trees

Paper task

data structures, string suffix structures, strings

Adam and Tree

data structures, trees

Flip the Cards

2-sat, constructive algorithms, data structures, greedy, sortings, two pointers

Rollbacks (Hard Version)

data structures, interactive, trees

Koala and Notebook

data structures, dfs and similar, graphs, shortest paths, strings, trees

Three Days Grace

data structures, dp, greedy, math, number theory, two pointers

Mice and Holes

data structures, dp, greedy, sortings

Extending Set of Points

data structures, divide and conquer, dsu

Palindrome Partition

binary search, brute force, data structures, dp, hashing, strings

Zip-line

binary search, data structures, dp, hashing

Goodbye Souvenir

data structures, divide and conquer

Cardboard Box

data structures, greedy

Rebrending

brute force, data structures, divide and conquer, implementation

Graph Subset Problem

constructive algorithms, data structures, graphs

New Year and Old Subsequence

data structures, divide and conquer, dp, matrices

Frequency Problem (Easy Version)

data structures, greedy

Greedy Shopping

binary search, data structures, divide and conquer, greedy, implementation

Nearest Leaf

data structures, trees

TorCoder

data structures

Graph and Queries

data structures, dsu, graphs, implementation, trees

Stack Exterminable Arrays

data structures, divide and conquer, dp, hashing

Product Sum

data structures, dp, geometry

Machine Learning

brute force, data structures

Willem, Chtholly and Seniorious

data structures, probabilities

Ciel and Gondolas

data structures, divide and conquer, dp

A Battle Against a Dragon

*special problem, data structures, dp

Painting Numbers

*special problem, data structures, greedy, number theory

Two Circles

brute force, data structures, implementation

Berland.Taxi

data structures

Last chance

data structures, flows, graph matchings, graphs, trees

Shooting Gallery

data structures, implementation

Dish Shopping

data structures, divide and conquer

Game with Tokens

data structures, games, implementation

Rhombus

brute force, data structures, dp

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Dividing Kingdom

binary search, brute force, data structures

Electrical Efficiency

combinatorics, data structures, dp, math, number theory, trees