Team Rocket Rises Again

data structures, graphs, shortest paths

Range Increments

data structures, greedy

Controversial Rounds

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

Permutation and Queries

brute force, data structures, divide and conquer, two pointers

Traffic Jams in the Land

data structures, dp, number theory

New Passenger Trams

binary search, brute force, data structures, sortings, two pointers

Best Edge Weight

data structures, dfs and similar, graphs, trees

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees

Minimal String Xoration

bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings

Nastya Hasn't Written a Legend

binary search, data structures

Pokémon Arena

data structures, graphs, greedy, implementation, shortest paths, sortings

Teams Formation

data structures, implementation

Maximum Questions

data structures, dp, strings

Inversions After Shuffle

data structures, probabilities

Three strings

data structures, dsu, string suffix structures, strings

Little Elephant and Tree

data structures, dfs and similar, trees

House Planning

constructive algorithms, data structures, graph matchings, greedy

Magician and Pigs (Easy Version)

brute force, data structures, implementation

Swap and Maximum Block

bitmasks, data structures, dfs and similar, divide and conquer, dp

Jeff and Removing Periods

data structures

Archaeology

data structures, dfs and similar, trees

Dog Show

constructive algorithms, data structures, greedy

Heidi and Library (medium)

data structures, greedy

Sonya and Ice Cream

binary search, data structures, dp, greedy, shortest paths, trees

Frequency Queries

data structures, dfs and similar, trees

Gojou and Matrix Game

data structures, dp, games, hashing, implementation, math, number theory, sortings

Labeling the Tree with Distances

data structures, dp, greedy, hashing, implementation, trees

Garlands

data structures

Rollbacks (Hard Version)

data structures, interactive, trees

Petya and File System

data structures, implementation

Il Derby della Madonnina

data structures, dp, math

Dynamic Diameter

*special problem, data structures, dfs and similar, divide and conquer, trees

Zebra Tower

*special problem, data structures, greedy, sortings

Vasya and Maximum Profit

binary search, constructive algorithms, data structures, dp, dsu

Duff is Mad

data structures, strings

Closest Pair

data structures, greedy

Choose a Square

binary search, data structures, sortings

New Year and the Acquaintance Estimation

binary search, data structures, graphs, greedy, implementation, math, sortings

Cats on the Upgrade (easy version)

brute force, data structures, dfs and similar, divide and conquer, dp, graphs, trees

Deduction Queries

data structures, dsu

Famil Door and Roads

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

Flip the Cards

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

Flip and Reverse

data structures, graphs, greedy

Boring Queries

data structures, math, number theory

Embassy Queue

data structures, greedy

Parking Lot

data structures, implementation

Antennas

data structures, dfs and similar, graphs, graphs, implementation, implementation, shortest paths, shortest paths

The Cake Is a Lie

constructive algorithms, data structures, dfs and similar, graphs

Madoka and the Sixth-graders

data structures, dfs and similar, greedy

Security

data structures, string suffix structures

Paper task

data structures, string suffix structures, strings

Hossam and Range Minimum Query

binary search, bitmasks, data structures, hashing, probabilities, strings, trees

Group Photo

binary search, data structures, implementation, two pointers

Greedy Subsequences

data structures, dp, trees

Adam and Tree

data structures, trees

Odd Mineral Resource

binary search, bitmasks, brute force, data structures, probabilities, trees

Indie Album

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

Optimize!

data structures

Bicolored Segments

data structures, dp, graph matchings, sortings

Isolation

data structures, dp

Death DBMS

data structures, string suffix structures, strings, trees

Field Photography

bitmasks, data structures, sortings

Inna and Binary Logic

binary search, bitmasks, data structures

Maximum Reduction

combinatorics, data structures, math

Points Movement

data structures, dp, greedy, implementation, sortings

Top-Notch Insertions

combinatorics, data structures

Game with Cards

binary search, constructive algorithms, data structures, dp, greedy, implementation

Little Elephant and Shifts

data structures

Velepin and Marketing

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

Professor's task

data structures, geometry

Comb

data structures, dp

Maximize The Value

data structures, sortings

Zigu Zagu

constructive algorithms, data structures, greedy

Aquarium decoration

data structures, greedy, two pointers

Choosing Ads

data structures

Narrow Components

brute force, data structures, dp, dsu, math, trees

Merge Equal Elements

constructive algorithms, data structures

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Cookies

binary search, data structures, dfs and similar, dp, games, trees

Eyes Closed

data structures, probabilities

Graph Traveler

brute force, data structures, dfs and similar, dp, graphs, implementation, math, number theory

Choosing Subtree is Fun

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

Reading Books (hard version)

data structures, greedy, implementation, sortings, ternary search, two pointers

Morse Code

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

Chemistry Experiment

binary search, data structures, ternary search

Fools and Foolproof Roads

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

Similar Sets

data structures, graphs, implementation

Tournament

data structures, graphs

Sereja and Two Sequences

data structures, dp

Points

combinatorics, data structures, implementation, math, matrices

Students' Revenge

data structures, greedy, sortings

Trees and XOR Queries Again

data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees

NN country

binary search, data structures, trees

Cutlet

data structures, dp

Smooth Sailing (Easy Version)

binary search, brute force, data structures, dfs and similar, dsu, graphs, shortest paths

Doremy's Drying Plan (Hard Version)

data structures, dp

Vasya and Big Integers

binary search, data structures, dp, hashing, strings

Lemper Cooking Competition

data structures

Yet Another LCP Problem

data structures, string suffix structures

Sleep in Class

constructive algorithms, data structures, math, two pointers