Summer Homework

data structures, math

Segment tree or Fenwick?

data structures

Into Blocks (hard version)

data structures

AmShZ Wins a Bet

data structures, greedy, hashing

Donkey and Stars

data structures, dp, geometry, math, sortings

Zigzag

data structures

Segments

data structures

Red-Black Cobweb

data structures, divide and conquer, implementation, trees

Outermost Maximums

data structures, greedy

Tavas on the Path

data structures, divide and conquer, trees

Berland Miners

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

Tourists

data structures, sortings

Teleportation in Byteland

data structures, dfs and similar, divide and conquer, graphs, shortest paths, trees

Min Cost Permutation (Hard Version)

binary search, constructive algorithms, data structures, greedy, math, sortings

Dish Shopping

data structures, divide and conquer

Dreamoon Likes Strings

constructive algorithms, data structures

Segment Covering

brute force, combinatorics, constructive algorithms, data structures, dp, trees

Constrained Tree

constructive algorithms, data structures

Distinctification

data structures, dsu, greedy

Shooting Gallery

data structures, implementation

Tower Defense

binary search, brute force, data structures

A Stroll Around the Matrix

data structures, greedy, math

May Holidays

data structures, trees

Hanger

data structures

Spring cleaning

*special problem, data structures, dfs and similar, graphs, trees

Oleg and chess

data structures, divide and conquer, flows, graph matchings

Banners

brute force, data structures, dp

Snowy Mountain

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

Equal Product

data structures, math, number theory, two pointers

The Winds of Winter

binary search, data structures

Mystic Carvings

data structures

Cannon

data structures, geometry, sortings

Rainbow Triples

binary search, data structures, flows, greedy

Strange Sort

data structures, sortings

RC Kaboom Show

binary search, brute force, data structures, geometry, math

A task for substrings

data structures, string suffix structures, strings

Fafa and Array

data structures, greedy

Frequency Mismatch (Easy Version)

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

Gregor and the Two Painters

data structures, divide and conquer, graphs, greedy, math

New task

data structures

Four Vertices

constructive algorithms, data structures, graphs, greedy, implementation, shortest paths

Maximum Sine

binary search, data structures, number theory

Li Hua and Path

data structures, dfs and similar, divide and conquer, dsu, trees

Tree Calendar

brute force, constructive algorithms, data structures, dfs and similar, sortings, trees

Raining season

data structures, divide and conquer, trees

Find String in a Grid

data structures, dp, strings, trees

Frog Fights

data structures, greedy

Arkady and Rectangles

data structures

Building Forest Trails

data structures, dsu

Store

data structures

Last chance

data structures, flows, graph matchings, graphs, trees

Blog Post Rating

data structures, sortings

Omkar and Tours

data structures, divide and conquer, sortings, trees

Tree or not Tree

data structures, divide and conquer, implementation, trees

New Year and Social Network

data structures, graph matchings, graphs, math, trees

Beautiful Tree

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

Perfect Matching

data structures, divide and conquer, interactive, trees

Reindeer Games

binary search, constructive algorithms, data structures, divide and conquer, flows, graphs, shortest paths

Boring Card Game

data structures, greedy, trees

Gates to Another World

bitmasks, data structures, dsu, two pointers

Sharti

data structures, games

Triameter

binary search, data structures, dfs and similar, trees

Eye-Pleasing City Park Tour

data structures, trees

Mirror Room

data structures, implementation

Minimize Inversions Number

data structures, greedy, math, sortings

Rainbow Rectangles

data structures, sortings, two pointers

Median Mountain Range

data structures

Tricky Password

data structures

Sereja and Dividing

data structures

Strange Permutation

binary search, combinatorics, data structures, dp, graphs, implementation, two pointers

Alien DNA

data structures, dsu, trees

Nauuo and ODT

data structures

Palindromic Problem

binary search, data structures, hashing, string suffix structures, strings

Permutation for Burenka

data structures, graph matchings, greedy, math, trees

The Potion of Great Power

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

Heroes of Making Magic III

data structures

MCMF?

data structures, flows, graphs, greedy, sortings, two pointers

A Certain Magical Party

combinatorics, data structures, greedy, sortings

No Monotone Triples

data structures

Squares

constructive algorithms, data structures, dp, graphs, trees

Feeling Good

bitmasks, data structures

Sasha and Algorithm of Silence's Sounds

data structures, trees

Frequency Mismatch (Hard Version)

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

Listening to Music

constructive algorithms, data structures

Greedy Elevator

data structures, implementation

Split

binary search, data structures, dp, greedy

My Beautiful Madness

data structures, trees

Line Distance

binary search, data structures, geometry

Iron Man

data structures, geometry, trees

Jumping Through the Array

binary search, data structures, graphs, two pointers

Chess Team Forming

*special problem, binary search, data structures, greedy

Train Tracks

data structures, trees

Evaluate RBS

data structures, geometry, implementation, math, sortings

Fishingprince Plays With Array Again

brute force, data structures, geometry, math

The Fair Nut and Amusing Xor

data structures

Summer Oenothera Exhibition

data structures

K Paths

combinatorics, data structures, dp, fft, math

Inverse Inversions

binary search, brute force, data structures

Local Deletions

binary search, data structures, implementation

Range Diameter Sum

data structures, trees