Tick, Tock

combinatorics, dfs and similar, dsu, graphs

XOR, Tree, and Queries

bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees

Tree Queries

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

Lexichromatography

combinatorics, dfs and similar, dsu, graphs, two pointers

Algebra Flash

bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees

Tree

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

Dividing Kingdom II

brute force, data structures, dsu, graphs, sortings

Smooth Sailing (Easy Version)

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

Double Sort II

dfs and similar, flows, graph matchings, graphs

Anti-Palindromize

flows, graphs, greedy

Rectangle Painting 2

flows, graph matchings, graphs

Cats on the Upgrade (easy version)

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

Roads in the Kingdom

dfs and similar, dp, graphs, trees

Tree Queries

dfs and similar, graphs, trees

ANDfinity

bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs

Museums Tour

dp, graphs, implementation

Sports Betting

bitmasks, combinatorics, dp, graphs, math, probabilities

Falling Sand (Easy Version)

dfs and similar, graphs, greedy

Removing Graph

brute force, dp, games, graphs, math

Bipartite Checking

data structures, dsu, graphs

Royal Questions

dsu, graphs, greedy

Power Tree

dfs and similar, dp, dsu, graphs, greedy, trees

Johnny and Megan's Necklace

binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs

It's a bird! No, it's a plane! No, it's AaParsa!

constructive algorithms, graphs, shortest paths

Lucky Country

dp, dsu, graphs

President's Path

dp, graphs, shortest paths

Complete the MST

bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees

Team-Building

data structures, dfs and similar, dsu, graphs

Clues

combinatorics, graphs

Genius

bitmasks, dp, graphs, number theory

Ant Man

dp, graphs, greedy

Cheap Robot

binary search, dsu, graphs, shortest paths, trees

Egor in the Republic of Dagestan

constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths

Ehab's Last Theorem

constructive algorithms, dfs and similar, graphs, greedy

Ski Accidents

constructive algorithms, graphs, greedy

AND Graph

bitmasks, dfs and similar, dsu, graphs

Mocha and Diana (Hard Version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, trees, two pointers

Tanya and Password

dfs and similar, graphs

The Potion of Great Power

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

Winning Strategy

binary search, graphs, math, shortest paths

Xor Spanning Tree

divide and conquer, fft, graphs

Berland SU Computer Network

constructive algorithms, dfs and similar, graphs, hashing, trees

Pentagon

combinatorics, graphs, matrices

Hypercatapult Commute

graphs

Theft of Blueprints

graphs, math

Crime Management

dp, graphs, matrices

Track

graphs, greedy, shortest paths

Daleks' Invasion (hard)

data structures, dsu, graphs, trees

Sereja and Tree

graphs, implementation

Privatization of Roads in Berland

flows, graph matchings, graphs

Minegraphed

constructive algorithms, graphs

Students Initiation

binary search, flows, graphs

Magical Permutation

bitmasks, brute force, constructive algorithms, data structures, graphs, math

Vicky's Delivery Service

data structures, dsu, graphs, hashing

Trails and Glades

constructive algorithms, dsu, graphs, greedy

BerDonalds

graphs, math, shortest paths

Palindrome XOR

dfs and similar, graphs

Vus the Cossack and a Graph

dfs and similar, graphs, greedy, implementation

Labelling Cities

dfs and similar, graphs, hashing

Allowed Letters

bitmasks, flows, graph matchings, graphs, greedy

Traveling Graph

bitmasks, graph matchings, graphs

Elevator

dp, graphs, shortest paths

PolandBall and White-Red graph

constructive algorithms, graphs, shortest paths

Economic Difficulties

data structures, dfs and similar, dp, flows, graphs, trees

Minimum Modular

brute force, graphs, math, number theory

Quarrel

graphs, shortest paths

Construct a tree

binary search, constructive algorithms, dfs and similar, graphs, greedy, trees

Machine Programming

flows, graphs

Trees and XOR Queries Again

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

Matrix Problem

flows, graphs

Neko and Flashback

constructive algorithms, dfs and similar, graphs

The Cake Is a Lie

constructive algorithms, data structures, dfs and similar, graphs

Maximum Matching

bitmasks, brute force, dfs and similar, dp, graphs

New Year and the Acquaintance Estimation

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

MST Company

binary search, graphs

Magic Matrix

brute force, divide and conquer, graphs, matrices, trees

Axel and Marston in Bitland

bitmasks, dp, graphs, matrices

Pokémon Arena

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

Jellyfish and Math

bitmasks, brute force, dfs and similar, dp, graphs, shortest paths

Card Game

binary search, flows, graphs

April Fools' Problem (medium)

binary search, flows, graphs

Distance Tree (easy version)

binary search, data structures, dfs and similar, graphs, shortest paths, trees

Coloring

brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math

Connectivity Addicts

constructive algorithms, dsu, graphs, greedy, interactive, shortest paths, trees

Interactive Game with Coloring

brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees

Happy Tree Party

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

Party

bitmasks, brute force, dp, graphs

Simple Cycles Edges

dfs and similar, graphs, trees

Leaf Sets

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

Fast Travel Text Editor

data structures, dfs and similar, graphs, shortest paths

New Year and Rainbow Roads

graphs, greedy, implementation

Dominoes

combinatorics, fft, graphs, math, number theory

The Hidden Pair (Easy Version)

binary search, dfs and similar, graphs, interactive, shortest paths, trees

Routing

bitmasks, brute force, dfs and similar, dp, graphs

Bear and Forgotten Tree 2

dfs and similar, dsu, graphs, trees

DFS Trees

dfs and similar, dsu, graphs, greedy, sortings, trees

Purple Crayon

data structures, dfs and similar, games, graphs, greedy, math, sortings, trees

Konrad and Company Evaluation

graphs

Plan of Lectures

constructive algorithms, dfs and similar, dsu, graphs, implementation, sortings, trees

Ehab and the Big Finale

constructive algorithms, divide and conquer, graphs, implementation, interactive, trees