Tree and Queries

data structures, dfs and similar, trees

Eternal Victory

dfs and similar, graphs, greedy, shortest paths, trees

Bear and Forgotten Tree 3

constructive algorithms, graphs, trees

Tree Shuffling

dfs and similar, dp, greedy, trees

Okabe and Boxes

data structures, greedy, trees

Mad City

dfs and similar, dsu, games, graphs, shortest paths, trees

Tree Requests

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

Fools and Roads

data structures, dfs and similar, trees

Alex's whims

constructive algorithms, graphs, greedy, shortest paths, trees

Path Queries

divide and conquer, dsu, graphs, sortings, trees

Peculiar apple-tree

dfs and similar, graphs, trees

Ciel the Commander

constructive algorithms, dfs and similar, divide and conquer, greedy, trees

Escape The Maze (easy version)

dfs and similar, greedy, shortest paths, trees, two pointers

Alyona and the Tree

dfs and similar, dp, graphs, trees

Social Network

dsu, graphs, greedy, implementation, trees

Minimum spanning tree for each edge

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

Shichikuji and Power Grid

dsu, graphs, greedy, shortest paths, trees

Tree Tag

dfs and similar, dp, games, trees

Path Prefixes

binary search, data structures, dfs and similar, trees

Paint the Tree

brute force, constructive algorithms, dp, graphs, implementation, trees

Tree with Maximum Cost

dfs and similar, dp, trees

Dr. Evil Underscores

bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees

Playoff Tournament

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

Bakry and Partitioning

bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees

Tree Painting

dfs and similar, dp, trees

Xenia and Tree

data structures, divide and conquer, trees

0, 1, 2, Tree!

bitmasks, brute force, greedy, implementation, trees

Tree Infection

binary search, greedy, sortings, trees

Fake Plastic Trees

dfs and similar, dp, greedy, trees

Edge Weight Assignment

bitmasks, constructive algorithms, dfs and similar, greedy, math, trees

TediousLee

dp, graphs, greedy, math, trees

Add on a Tree

trees

Sum in the tree

constructive algorithms, dfs and similar, greedy, trees

Compression and Expansion

brute force, data structures, greedy, implementation, trees

Choosing Capital for Treeland

dfs and similar, dp, graphs, trees

Andryusha and Colored Balloons

dfs and similar, graphs, greedy, trees

Maximum Distributed Tree

dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees

Tree Queries

dfs and similar, graphs, trees

Maximum White Subtree

dfs and similar, dp, graphs, trees

Uncle Bogdan and Country Happiness

dfs and similar, greedy, math, trees

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Tree Cutting

binary search, dp, greedy, implementation, trees

Military Problem

dfs and similar, graphs, trees

Valera and Elections

dfs and similar, graphs, trees

Weights Assignment For Tree Edges

constructive algorithms, trees

Queries for the Array

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

Link Cut Centroids

constructive algorithms, dfs and similar, graphs, trees

Xor-tree

dfs and similar, trees

Timofey and a tree

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

Enemy is weak

data structures, trees

String Transformation 1

dsu, graphs, greedy, sortings, strings, trees, two pointers

Who Tested?

*special problem, expression parsing, trees

Roads not only in Berland

dsu, graphs, trees

Cover it!

dfs and similar, dsu, graphs, shortest paths, trees

Anji's Binary Tree

dfs and similar, dp, trees

Infected Tree

dfs and similar, dp, trees

13th Labour of Heracles

data structures, greedy, sortings, trees

Cut 'em all!

dfs and similar, dp, graphs, greedy, trees

Queen

dfs and similar, trees

PolandBall and Forest

dfs and similar, dsu, graphs, interactive, trees

Gardener and Tree

brute force, data structures, dfs and similar, greedy, implementation, trees

Omkar and Heavenly Tree

constructive algorithms, trees

Edgy Trees

dfs and similar, dsu, graphs, math, trees

Minimal Height Tree

graphs, greedy, shortest paths, trees

Copil Copac Draws Trees

dfs and similar, dp, graphs, trees

Vertical Paths

graphs, implementation, trees

Lomsat gelral

data structures, dfs and similar, dsu, trees

Ehab and Path-etic MEXs

constructive algorithms, dfs and similar, greedy, trees

Mocha and Diana (Easy Version)

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

Distance in Tree

dfs and similar, dp, trees

Valid BFS?

dfs and similar, graphs, shortest paths, trees

Parsa's Humongous Tree

dfs and similar, divide and conquer, dp, greedy, trees

Not Assigning

constructive algorithms, dfs and similar, number theory, trees

White-Black Balanced Subtrees

dfs and similar, dp, graphs, trees

Masha and a Beautiful Tree

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

Begginer's Zelda

greedy, trees

Christmas Spruce

implementation, trees

Reposts

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

Journey

dfs and similar, dp, graphs, probabilities, trees

Mahmoud and Ehab and the bipartiteness

dfs and similar, graphs, trees

Apple Tree

combinatorics, dfs and similar, dp, math, trees

Game On Leaves

games, trees

Strong Vertices

math, sortings, trees

Linova and Kingdom

dfs and similar, dp, greedy, sortings, trees

Yet Another Card Deck

brute force, data structures, implementation, trees

Xenia and Bit Operations

data structures, trees

k-Tree

dp, implementation, trees

Sum in Binary Tree

bitmasks, combinatorics, math, trees

Party

dfs and similar, graphs, trees

Kefa and Park

dfs and similar, graphs, trees