Love Triangle

graphs

Gregor and the Pawn Game

dfs and similar, dp, flows, graph matchings, graphs, greedy, implementation

Destroying Bridges

graphs, greedy, math

PolandBall and Hypothesis

brute force, graphs, math, number theory

Li Hua and Maze

constructive algorithms, flows, graphs, greedy, implementation

Party

dfs and similar, graphs, trees

Protect Sheep

brute force, dfs and similar, graphs, implementation

Metro

graphs

New Year Transportation

dfs and similar, graphs, implementation

Badge

brute force, dfs and similar, graphs

King Escape

dfs and similar, graphs, implementation

Long Jumps

dp, graphs

The Lakes

dfs and similar, dsu, graphs, implementation

Fridge Lockers

graphs, implementation

Rook, Bishop and King

graphs, math, shortest paths

Путь Робота

constructive algorithms, dfs and similar, graphs

Ice Skating

brute force, dfs and similar, dsu, graphs

Mocha and Hiking

constructive algorithms, graphs

Princesses and Princes

brute force, graphs, greedy

Reposts

*special problem, dfs and similar, dp, graphs, trees

Madoka and the Elegant Gift

brute force, constructive algorithms, graphs, implementation

Belted Rooms

graphs, implementation

Students and Shoelaces

brute force, dfs and similar, graphs, implementation

Diameter of Graph

constructive algorithms, graphs, greedy, math

Simple Molecules

brute force, graphs, math

Network Topology

graphs, implementation

King's Task

brute force, graphs, implementation

Polygon

dp, graphs, implementation, shortest paths

Rumor

dfs and similar, graphs, greedy

Getting Zero

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

Road Construction

constructive algorithms, graphs

Forever Winter

dfs and similar, graphs, math

Mahmoud and Ehab and the bipartiteness

dfs and similar, graphs, trees

Masha and a Beautiful Tree

dfs and similar, divide and conquer, graphs, sortings, trees

Inversion Graph

data structures, dsu, graphs, math

Arrow Path

brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths

White-Black Balanced Subtrees

dfs and similar, dp, graphs, trees

Party

brute force, graphs

Bakery

graphs

Vertical Paths

graphs, implementation, trees

Little Alawn's Puzzle

combinatorics, dp, dsu, graphs, math

Jatayu's Balanced Bracket Sequence

data structures, dsu, graphs, greedy

PolandBall and Forest

dfs and similar, dsu, graphs, interactive, trees

Vasya and Isolated Vertices

constructive algorithms, graphs

Dividing the numbers

constructive algorithms, graphs, math

Friends

graphs, implementation, math

Two Buttons

dfs and similar, graphs, greedy, implementation, math, shortest paths

Ball in Berland

combinatorics, graphs, math

News Distribution

dfs and similar, dsu, graphs

Web of Lies

brute force, graphs, greedy

Productive Meeting

constructive algorithms, graphs, greedy

Great Graphs

constructive algorithms, graphs, greedy, shortest paths, sortings

The Child and Toy

graphs, greedy, sortings

Mocha and Diana (Easy Version)

brute force, constructive algorithms, dsu, graphs, greedy, trees

Copil Copac Draws Trees

dfs and similar, dp, graphs, trees

Unforgivable Curse (easy version)

brute force, constructive algorithms, dsu, graphs, greedy, strings

Mr. Kitayuta's Colorful Graph

dfs and similar, dp, dsu, graphs

Anonymous Informant

brute force, dfs and similar, graphs, implementation

Phase Shift

dfs and similar, dsu, graphs, greedy, implementation, strings

Where is the Pizza?

data structures, dfs and similar, dsu, graphs, implementation, math

Set Construction

constructive algorithms, dfs and similar, graphs, greedy

Doremy's City Construction

graphs, greedy

Strongly Connected City

brute force, dfs and similar, graphs, implementation

Dorm Water Supply

dfs and similar, graphs

Ring road

graphs

Football

constructive algorithms, graphs, implementation

Send the Fool Further! (easy)

dfs and similar, graphs, trees

Obsession with Robots

constructive algorithms, graphs, implementation

Kefa and Park

dfs and similar, graphs, trees

Cyclic Components

dfs and similar, dsu, graphs

Mortal Kombat Tower

dp, graphs, greedy, shortest paths

Journey

dfs and similar, dp, graphs, probabilities, trees

Running for Gold

combinatorics, graphs, greedy, sortings

Bear and Friendship Condition

dfs and similar, dsu, graphs

Cyclic Permutations

combinatorics, dp, graphs, math

Lunar New Year and a Wander

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

NP-Hard Problem

dfs and similar, graphs

Minimum Ties

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation, math

Secret Passwords

dfs and similar, dsu, graphs

Unforgivable Curse (hard version)

brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings

Edgy Trees

dfs and similar, dsu, graphs, math, trees

Cut 'em all!

dfs and similar, dp, graphs, greedy, trees

Nastya and Potions

dfs and similar, dp, graphs, sortings

Pairs

graphs, implementation

Cthulhu

dfs and similar, dsu, graphs

Hongcow Builds A Nation

dfs and similar, graphs

Bear and Three Musketeers

brute force, dfs and similar, graphs, hashing

Ping-Pong (Easy Version)

dfs and similar, graphs

Peculiar apple-tree

dfs and similar, graphs, trees

Coach

brute force, dfs and similar, graphs

Searching for Graph

brute force, constructive algorithms, graphs

Hide and Seek

graphs

Brain Network (medium)

dfs and similar, graphs, trees

PFAST Inc.

bitmasks, brute force, graphs

Resort

graphs

Online Courses In BSU

*special problem, dfs and similar, graphs, implementation

Party

dfs and similar, dsu, graphs

Party

brute force, dfs and similar, dsu, graphs

Fox And Names

dfs and similar, graphs, sortings

Minimal Height Tree

graphs, greedy, shortest paths, trees