Map

data structures, implementation, sortings

Traveling in Berland

binary search, data structures, graphs, greedy, implementation

Geometers Anonymous Club

data structures, geometry, math, sortings

Functions On The Segments

data structures

Almost Increasing Array

data structures, dp

Yaroslav and Points

data structures

Recursive Queries

data structures

Alice and the Unfair Game

binary search, data structures, dp, dsu

Magic multisets

data structures

Inversion Composition

constructive algorithms, data structures, greedy

Robot and Candies

data structures, graph matchings, greedy

Memory and Casinos

data structures, math, probabilities

Cook and Porridge

binary search, constructive algorithms, data structures, implementation

Robot Arm

data structures, geometry

Igloo Skyscraper

data structures, geometry

Kingdom of Criticism

data structures, dsu

Babysitting

2-sat, binary search, data structures, graphs, trees

Sereja and Straight Lines

binary search, data structures, geometry, sortings, two pointers

Virus

data structures, divide and conquer, dsu, graphs

Encryption (hard)

data structures, dp

Fetch the Treasure

brute force, data structures, graphs, shortest paths

Cutting a Fence

binary search, data structures, dsu

Half-decay tree

data structures, divide and conquer, dp, math, probabilities

Electrical Efficiency

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

Dividing Kingdom

binary search, brute force, data structures

Keen Tree Calculation

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

Rhombus

brute force, data structures, dp

Game with Tokens

data structures, games, implementation

Dish Shopping

data structures, divide and conquer

Shooting Gallery

data structures, implementation

Last chance

data structures, flows, graph matchings, graphs, trees

Berland.Taxi

data structures

Two Circles

brute force, data structures, implementation

Painting Numbers

*special problem, data structures, greedy, number theory

A Battle Against a Dragon

*special problem, data structures, dp

Ciel and Gondolas

data structures, divide and conquer, dp

Willem, Chtholly and Seniorious

data structures, probabilities

Machine Learning

brute force, data structures

Product Sum

data structures, dp, geometry

Stack Exterminable Arrays

data structures, divide and conquer, dp, hashing

Graph and Queries

data structures, dsu, graphs, implementation, trees

TorCoder

data structures

Nearest Leaf

data structures, trees

Greedy Shopping

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

Frequency Problem (Easy Version)

data structures, greedy

New Year and Old Subsequence

data structures, divide and conquer, dp, matrices

Graph Subset Problem

constructive algorithms, data structures, graphs

Rebrending

brute force, data structures, divide and conquer, implementation

Cardboard Box

data structures, greedy

Goodbye Souvenir

data structures, divide and conquer

Zip-line

binary search, data structures, dp, hashing

Palindrome Partition

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

Extending Set of Points

data structures, divide and conquer, dsu

Mice and Holes

data structures, dp, greedy, sortings

Three Days Grace

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

Koala and Notebook

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

Rollbacks (Hard Version)

data structures, interactive, trees

Flip the Cards

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

Adam and Tree

data structures, trees

Paper task

data structures, string suffix structures, strings

Death DBMS

data structures, string suffix structures, strings, trees

Bicolored Segments

data structures, dp, graph matchings, sortings

Optimize!

data structures

Points Movement

data structures, dp, greedy, implementation, sortings

Velepin and Marketing

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

Top-Notch Insertions

combinatorics, data structures

Choosing Subtree is Fun

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

Doremy's Drying Plan (Hard Version)

data structures, dp

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Yet Another LCP Problem

data structures, string suffix structures

Delivery Club

binary search, data structures, dp

Diverse Segments

data structures, two pointers

Strange Array

data structures, greedy, sortings

Vladik and Entertaining Flags

data structures, dsu, graphs

Power Sockets

binary search, data structures, greedy

Colorful Constructive

constructive algorithms, data structures, greedy

Divan and a Cottage

binary search, data structures

Phoenix and Memory

data structures, dfs and similar, graphs, greedy

Pawns

data structures, divide and conquer, greedy

Strange Addition

data structures, dp, matrices

Autocompletion

data structures, dfs and similar, dp

Labyrinth Adventures

data structures, dp, matrices, shortest paths

Sonya and Bitwise OR

bitmasks, data structures, divide and conquer

Interval Cubing

data structures, math

Pairs of Paths

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

Kuzya and Homework

data structures, number theory

Good Pairs

binary search, data structures, dp

Power Tree

data structures, trees

Forced Online Queries Problem

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

Camping Groups

data structures, sortings

Keyboard Design

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

GCD is Greater

brute force, data structures, math, number theory

Field Should Not Be Empty

brute force, data structures, divide and conquer

Maximum Waterfall

data structures, dp, graphs, sortings

Dasha and Photos

brute force, data structures, dp, implementation

Tourists

data structures, sortings

Constrained Tree

constructive algorithms, data structures

Fafa and Array

data structures, greedy

Eye-Pleasing City Park Tour

data structures, trees

Sereja and Dividing

data structures