Minimal Segment Cover

data structures, dfs and similar, divide and conquer, dp, greedy, implementation, trees

Travelling Salesman Problem

binary search, data structures, dp, greedy, shortest paths, sortings, two pointers

Vitya and Strange Lesson

binary search, data structures

Cats Transport

data structures, dp

Count Paths

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

Music Festival

binary search, data structures, dp, greedy, sortings

Count the Trains

binary search, data structures, greedy, sortings

Pencils and Boxes

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

Mahmoud and a Dictionary

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

Division + LCP (easy version)

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

Make It Increasing

binary search, constructive algorithms, data structures, dp, implementation

Beautiful Mirrors

data structures, dp, math, probabilities

Permutation Addicts

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

Messenger Simulator

data structures

Monocarp and the Set

combinatorics, data structures, math

The Wu

bitmasks, brute force, data structures

Strip

binary search, data structures, dp, two pointers

Sausage Maximization

bitmasks, data structures, trees

Three Sequences

constructive algorithms, data structures, greedy, math

Lazy Student

constructive algorithms, data structures, graphs

Sasha and Array

data structures, math, matrices

Multicolored Cars

data structures, implementation

Xor Tree

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

Decreasing Debts

constructive algorithms, data structures, graphs, greedy, implementation, math, two pointers

A Growing Tree

data structures, dfs and similar, trees

Mishka and Interesting sum

data structures

Money Transfers

constructive algorithms, data structures, greedy, sortings

Cashback

data structures, dp, greedy, math

Tufurama

data structures

Feed Cats

data structures, dp, sortings

Sum of Progression

brute force, data structures, dp, implementation, math

Shop Game

data structures, greedy, math, sortings

Optimal Partition

data structures, dp

Non-Decreasing Dilemma

data structures, divide and conquer, math

DZY Loves Modification

brute force, data structures, greedy

Tree Reconstruction

constructive algorithms, data structures, graphs, greedy

Carrots for Rabbits

binary search, data structures, greedy, math, sortings

Power Transmission (Hard Edition)

data structures, geometry, implementation, math

One Occurrence

data structures, divide and conquer

Cyclic MEX

data structures, implementation, math, two pointers

Petya and Divisors

binary search, data structures, number theory

Portal

brute force, data structures, dp, greedy, implementation

Pchelyonok and Segments

binary search, data structures, dp, greedy, math

Professor Higashikata

data structures, dsu, greedy, implementation, strings

Vasya and a Tree

data structures, trees

01 Tree

constructive algorithms, data structures, dsu, greedy, sortings, trees

Even Path

data structures, implementation

Yet Another Sorting Problem

data structures, math

Water Balance

data structures, geometry, greedy

Watching Fireworks is Fun

data structures, dp, math

Kirill and Mushrooms

data structures, sortings

Fountains

binary search, data structures, implementation

Tree Construction

data structures, trees

Koxia and Game

constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation

Riverside Curio

data structures, dp, greedy

Case of Fugitive

data structures, greedy, sortings

Duff in the Army

data structures, trees

Almost Difference

data structures, math

Robot Queries

binary search, data structures, dp, implementation

Polycarp's phone book

data structures, implementation, sortings

Li Hua and Tree

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

All Possible Digits

binary search, data structures, greedy, math, number theory

Segment Tree

data structures, dsu, graphs, trees

Playlist

data structures, dsu, implementation, shortest paths

Report

data structures, sortings

Lonely Mountain Dungeons

brute force, data structures, greedy, math, ternary search

Kay and Snowflake

data structures, dfs and similar, dp, trees

Balanced Playlist

binary search, data structures, implementation

Missile Silos

data structures, dfs and similar, graphs, shortest paths

Collapsing Strings

data structures, strings, trees

Nested Segments

data structures, sortings

Array Partition

binary search, data structures, greedy, two pointers

The Fair Nut and Rectangles

data structures, dp, geometry

Microcycle

data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees

Boring Segments

data structures, sortings, trees, two pointers

Set To Max (Hard Version)

constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings

Babaei and Birthday Cake

data structures, dp

Hanoi Factory

brute force, data structures, dp, greedy, sortings

Cleaning

data structures, dp, greedy, math

Reverse Sort Sum

constructive algorithms, data structures, greedy, implementation, math, two pointers

Maximum Subarray

data structures, dp, greedy, two pointers

Xor-MST

bitmasks, constructive algorithms, data structures

Painting the Array II

constructive algorithms, data structures, dp, greedy, implementation

Copying Data

data structures

Arthur and Table

brute force, data structures, dp, greedy, math, sortings

String Reconstruction

data structures, greedy, sortings, strings

Array Restoration

constructive algorithms, data structures

Moving Points

data structures, divide and conquer, implementation, sortings

Present

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

Olya and Energy Drinks

data structures, dfs and similar, graphs, shortest paths

Robot in a Hallway

data structures, dp, greedy, implementation, ternary search

Tokitsukaze and Meeting

data structures, implementation, math

Rescheduling the Exam

binary search, data structures, greedy, implementation, math, sortings

Physical Education Lessons

data structures, implementation, sortings

Psychos in a Line

data structures, implementation

Subsegments

data structures, implementation

Lena and Matrix

data structures, dp, geometry, shortest paths

Big Brush

constructive algorithms, data structures, greedy, implementation

White Lines

brute force, data structures, dp, implementation, two pointers

Same Sum Blocks (Hard)

data structures, greedy