Clubstep

binary search, brute force, data structures, greedy, trees

Alphabetic Tree

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

Strange device

binary search, interactive, math, trees

Bus Routes

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

Verifying Kingdom

binary search, divide and conquer, interactive, trees

Thanos Snap

binary search, dp, games, greedy, trees

Triameter

binary search, data structures, dfs and similar, trees

Road Repair in Treeland

*special problem, binary search, dp, trees

Legendary Tree

binary search, interactive, trees

Campus

binary search, data structures, dsu, trees

Groceries in Meteor Town

binary search, data structures, dsu, trees

Furukawa Nagisa's Tree

binary search, divide and conquer, sortings, trees

Parmigiana With Seafood

binary search, dp, greedy, trees

Berland Miners

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

Smooth Sailing (Hard Version)

binary search, data structures, dsu, geometry, graphs, trees

Michael and Hotel

binary search, interactive, trees

Black, White and Grey Tree

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

Freezing with Style

binary search, data structures, divide and conquer, trees

Misha and LCP on Tree

binary search, dfs and similar, hashing, string suffix structures, trees

Odd Mineral Resource

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

Andrey's Tree

binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees

Nikita and game

binary search, dfs and similar, divide and conquer, graphs, trees

Cats on the Upgrade (hard version)

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

NN country

binary search, data structures, trees

Frequency Mismatch (Hard Version)

binary search, data structures, dfs and similar, hashing, probabilities, trees

XOR Partition

binary search, bitmasks, data structures, divide and conquer, greedy, trees

DZY Loves Planting

binary search, dsu, trees

Split

binary search, data structures, divide and conquer, dsu, math, trees, two pointers

Distance Tree (hard version)

binary search, dfs and similar, shortest paths, trees

The Hidden Pair (Hard Version)

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

Frequency Mismatch (Easy Version)

binary search, data structures, divide and conquer, hashing, probabilities, trees

Preorder Test

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

Choosing Subtree is Fun

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

Keen Tree Calculation

binary search, data structures, dp, geometry, graphs, implementation, trees

Babysitting

2-sat, binary search, data structures, graphs, trees

Hossam and Range Minimum Query

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

Expected diameter of a tree

binary search, brute force, dfs and similar, dp, sortings, trees

Cheap Robot

binary search, dsu, graphs, shortest paths, trees

Construct a tree

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

Cookies

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

Sonya and Ice Cream

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

Blocking Chips

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

Distance Tree (easy version)

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

Split the Tree

binary search, data structures, dp, greedy, trees

The Hidden Pair (Easy Version)

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

Spanning Tree Queries

binary search, data structures, dfs and similar, dsu, graphs, greedy, math, sortings, trees

Make It Connected

binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers

Mashmokh and Water Tanks

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

wxhtzdy ORO Tree

binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees

Company

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

Yet Another Array Counting Problem

binary search, data structures, divide and conquer, dp, flows, math, trees

Dog Snacks

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

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Qpwoeirut and Vertices

binary search, data structures, dfs and similar, divide and conquer, dsu, greedy, trees

MEX Queries

binary search, data structures, trees

Petya and Tree

binary search, dfs and similar, probabilities, sortings, trees

BinCoin

binary search, divide and conquer, hashing, implementation, probabilities, trees

Thwarting Demonstrations

binary search, data structures, trees

Tree

binary search, dp, trees

Kuro and GCD and XOR and SUM

binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees

Edge Reverse

binary search, dfs and similar, graphs, trees

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Irrigation

binary search, data structures, implementation, sortings, trees, two pointers

Weights Division (hard version)

binary search, dfs and similar, greedy, sortings, trees, two pointers

Gold Transfer

binary search, data structures, dp, greedy, interactive, trees

Tree Requests

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

Infinite Inversions

binary search, data structures, implementation, sortings, trees

Xor Tree

binary search, bitmasks, data structures, divide and conquer, dp, trees

Blood Cousins

binary search, data structures, dfs and similar, trees

A and B and Lecture Rooms

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

Inna and Sequence

binary search, data structures, dp, trees

Vlad and the Mountains

binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers

Pillars

binary search, data structures, dp, sortings, trees

Range Sorting (Easy Version)

binary search, dp, dsu, greedy, trees, two pointers

Privatization of Roads in Treeland

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

Exposition

binary search, data structures, dsu, trees, two pointers

Generating Sets

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

Alyona and a tree

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

Serval and Rooted Tree

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

Reset K Edges

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

Bandit in a City

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

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Path Prefixes

binary search, data structures, dfs and similar, trees

Tree Infection

binary search, greedy, sortings, trees

Tree Cutting

binary search, dp, greedy, implementation, trees