Bear and Tree Jumps

dfs and similar, dp, trees

Bear and Friendship Condition

dfs and similar, dsu, graphs

Online Courses In BSU

*special problem, dfs and similar, graphs, implementation

Cycle In Maze

*special problem, dfs and similar, graphs, greedy, shortest paths

Code For 1

constructive algorithms, dfs and similar, divide and conquer

Garland

dfs and similar, graphs, greedy, trees

Mahmoud and a xor trip

bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees

Mahmoud and a Dictionary

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

Tree Folding

dfs and similar, dp, greedy, implementation, trees

Timofey and a tree

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

Dasha and Puzzle

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

Broken Tree

dfs and similar, dp, graphs, greedy, trees

Pavel and barbecue

constructive algorithms, dfs and similar

PolandBall and Forest

dfs and similar, dsu, graphs, interactive, trees

New Year and Snowy Grid

dfs and similar, dsu, graphs, interactive

New Year and Fireworks

brute force, data structures, dfs and similar, dp, implementation

Santa Clauses and a Soccer Championship

constructive algorithms, dfs and similar, graphs, trees

Comments

dfs and similar, expression parsing, implementation, strings

Hongcow Builds A Nation

dfs and similar, graphs

Chloe and pleasant prizes

dfs and similar, dp, graphs, trees

Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths

data structures, dfs and similar, trees

Arpa’s overnight party and Mehrdad’s silent entering

constructive algorithms, dfs and similar, graphs

Arpa's weak amphitheater and Mehrdad's valuable Hoses

dfs and similar, dp, dsu

Arpa's loud Owf and Mehrdad's evil plan

dfs and similar, math

Alyona and a tree

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

Anton and Tree

dfs and similar, dp, trees

Tourist Reform

dfs and similar, graphs

Socks

dfs and similar, dsu, graphs, greedy

Bulmart

binary search, dfs and similar

Transformation: from A to B

brute force, dfs and similar, math

One-Way Reform

constructive algorithms, dfs and similar, flows, graphs, greedy

Lakes in Berland

dfs and similar, dsu, graphs, greedy, implementation

Generating Sets

binary search, data structures, dfs and similar, greedy, strings, trees

Cactusophobia

dfs and similar, flows

Paint it really, really dark gray

dfs and similar

Digit Tree

dfs and similar, divide and conquer, dsu, trees

Directed Roads

combinatorics, dfs and similar, graphs, math

Generate a String

dfs and similar, dp

Centroids

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

Persistent Bookcase

bitmasks, data structures, dfs and similar, implementation

Break Up

dfs and similar, graphs

Connecting Universities

dfs and similar, dp, graphs, trees

Fix a Tree

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

Puzzles

dfs and similar, math, probabilities, trees

Swaps in Permutation

dfs and similar, dsu, math

Brain Network (medium)

dfs and similar, graphs, trees

Mike and Shortcuts

dfs and similar, graphs, greedy, shortest paths

TOF

dfs and similar, graphs

NP-Hard Problem

dfs and similar, graphs

Kay and Snowflake

data structures, dfs and similar, dp, trees

Alyona and the Tree

dfs and similar, dp, graphs, trees

Gifts by the List

constructive algorithms, dfs and similar, graphs, trees

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

Bear and Square Grid

dfs and similar, dsu, implementation

Graph Coloring

dfs and similar, graphs

Polycarp and Hay

dfs and similar, dsu, graphs, greedy, sortings

New Reform

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

Bear and Forgotten Tree 2

dfs and similar, dsu, graphs, trees

Bear and Compressing

brute force, dfs and similar, dp, strings

Pursuit For Artifacts

dfs and similar, dsu, graphs, trees

Clockwork Bomb

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

Table Compression

dfs and similar, dp, dsu, graphs, greedy

Путь Робота

constructive algorithms, dfs and similar, graphs

Bear and Chemistry

data structures, dfs and similar, graphs, trees

Three-dimensional Turtle Super Computer

brute force, dfs and similar, graphs

Road Improvement

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

Making Genome in Berland

*special problem, dfs and similar, strings

Yash And Trees

bitmasks, data structures, dfs and similar, math, number theory

The Chocolate Spree

dfs and similar, dp, graphs, trees

Famil Door and Roads

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

Island Puzzle

dfs and similar, dsu, graphs, trees

Preorder Test

binary search, dfs and similar, dp, graphs, greedy, trees

Ants in Leaves

dfs and similar, greedy, sortings, trees

Hamiltonian Spanning Tree

dfs and similar, dp, graph matchings, greedy, trees

The Labyrinth

dfs and similar

Kingdom and its Cities

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

Square Root of Permutation

combinatorics, constructive algorithms, dfs and similar, graphs, math

Minimum spanning tree for each edge

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

Board Game

data structures, dfs and similar

Moodular Arithmetic

combinatorics, dfs and similar, dsu, math, number theory

Acyclic Organic Compounds

data structures, dfs and similar, dsu, hashing, strings, trees

Lomsat gelral

data structures, dfs and similar, dsu, trees

Igor In the Museum

dfs and similar, graphs, shortest paths

Wilbur and Strings

dfs and similar, dp, graphs, strings

Happy Tree Party

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

Super M

dfs and similar, dp, graphs, trees

Three States

dfs and similar, graphs, shortest paths

Phillip and Trains

dfs and similar, graphs, shortest paths

Kefa and Park

dfs and similar, graphs, trees

Invariance of Tree

constructive algorithms, dfs and similar, greedy, trees

Run for beer

dfs and similar, shortest paths

Bribes

dfs and similar, graphs, trees

Bear and Three Musketeers

brute force, dfs and similar, graphs, hashing

Bear and Drawing

constructive algorithms, dfs and similar, trees

CNF 2

constructive algorithms, dfs and similar, graphs, greedy

Tree Requests

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

President and Roads

dfs and similar, graphs, hashing, shortest paths

Logistical Questions

dfs and similar, divide and conquer, trees

Matching Names

dfs and similar, strings, trees

Vitaly and Cycle

combinatorics, dfs and similar, graphs, math