Nearest Excluded Points

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

Reset K Edges

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

Burenka and Traditions (hard version)

data structures, dp, greedy

Bash and a Tough Math Puzzle

data structures, number theory

Berserk Monsters

brute force, data structures, dsu, implementation, math

Permutation Graph

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

Permutation Restoration

binary search, data structures, greedy, math, sortings, two pointers

Old Floppy Drive

binary search, data structures, math

Array Stabilization (GCD version)

binary search, brute force, data structures, divide and conquer, number theory, two pointers

XOR Construction

bitmasks, constructive algorithms, data structures, math, string suffix structures, trees

Difference Array

brute force, data structures, implementation, sortings

Multiple Testcases

binary search, constructive algorithms, data structures, greedy, sortings, two pointers

Cow and Fields

binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings

Skyscrapers (hard version)

data structures, dp, greedy

String Reversal

data structures, greedy, strings

Beautiful Array

brute force, data structures, divide and conquer, dp, greedy

Fools and Roads

data structures, dfs and similar, trees

Array Division

binary search, data structures, implementation

Painting the Array I

constructive algorithms, data structures, dp, greedy, implementation

Replace the Numbers

constructive algorithms, data structures, dsu, implementation

Mike and Feet

binary search, data structures, dp, dsu

Multiset

binary search, data structures

Zigzags

brute force, combinatorics, data structures, math, two pointers

Enemy is weak

data structures, trees

Modulo Sum

combinatorics, data structures, dp, two pointers

Longest Regular Bracket Sequence

constructive algorithms, data structures, dp, greedy, sortings, strings

Name the album

*special problem, data structures, implementation

Embassy Queue

data structures, greedy

Parking Lot

data structures, implementation

Petya and File System

data structures, implementation

Heidi and Library (medium)

data structures, greedy

Range Increments

data structures, greedy

Fancy Fence

*special problem, data structures, dsu, implementation, math, sortings

Beaver

data structures, dp, greedy, hashing, strings, two pointers

Random Query

data structures, math, probabilities, two pointers

Driving Test

data structures, dp, greedy

Four Segments

brute force, data structures, dp

Contest Balloons

data structures, greedy

Yet Another Array Queries Problem

data structures, implementation

Tree Construction

data structures, trees

Fountains

binary search, data structures, implementation

All Possible Digits

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

Set To Max (Hard Version)

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

Nested Segments

data structures, sortings

Subsegments

data structures, implementation

Hanging Hearts

constructive algorithms, data structures, dfs and similar, dp, greedy, trees

Perfect Security

data structures, greedy, strings, trees

New Year Snowmen

binary search, data structures, greedy

Optimal Subsequences (Hard Version)

data structures, greedy

Identify the Operations

combinatorics, data structures, dsu, greedy, implementation

Maximum Xor Secondary

data structures, implementation, two pointers

Numbers on Tree

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

Too Easy Problems

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

Clique Problem

data structures, dp, greedy, implementation, sortings

Desktop Rearrangement

data structures, greedy, implementation

Irreducible Anagrams

binary search, constructive algorithms, data structures, strings, two pointers

Too Many Segments (hard version)

data structures, greedy, sortings

Omsk Metro (simple version)

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

The Fair Nut and the Best Path

data structures, dp, trees

Vessels

data structures, dsu, implementation, trees

Rating Compression

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

Max GEQ Sum

binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers

Range and Partition

binary search, constructive algorithms, data structures, greedy, two pointers

Petya and Array

data structures, divide and conquer, two pointers

Slimes

binary search, constructive algorithms, data structures, greedy, two pointers

Molly's Chemicals

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

Buying gifts

data structures, greedy, sortings

Two Teams

data structures, implementation, sortings

Slime Escape

data structures, dp, greedy, two pointers

ATM and Students

binary search, data structures, two pointers

Interesting Array

constructive algorithms, data structures, trees

Integral Array

brute force, constructive algorithms, data structures, math

A and B and Interesting Substrings

data structures, dp, two pointers

Andrey and Escape from Capygrad

binary search, data structures, dp, dsu, greedy, sortings

The Treasure of The Segments

binary search, data structures, greedy

Messenger in MAC

binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings

Rating System

binary search, brute force, data structures, dp, dsu, greedy, math, two pointers

Rescue Nibel!

combinatorics, data structures, sortings

Playoff Tournament

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

Three Blocks Palindrome (hard version)

brute force, data structures, dp, two pointers

Book

binary search, brute force, data structures, dp, graphs, implementation, sortings

Vasiliy's Multiset

binary search, bitmasks, data structures, trees

Integers Have Friends

binary search, data structures, divide and conquer, math, number theory, two pointers

Little Elephant and Array

constructive algorithms, data structures

Pashmak and Parmida's problem

data structures, divide and conquer, sortings

Good Substrings

data structures, strings

Zebra Tower

*special problem, data structures, greedy, sortings

Corporation Mail

data structures, expression parsing, implementation

Bracket Sequence

data structures, expression parsing, implementation

Buses

binary search, data structures, dp

Processing Queries

*special problem, constructive algorithms, data structures, two pointers

Factory Repairs

data structures

Correct Bracket Sequence Editor

data structures, dsu, strings

Multicolored Cars

data structures, implementation

Lazy Student

constructive algorithms, data structures, graphs

Portal

brute force, data structures, dp, greedy, implementation

Riverside Curio

data structures, dp, greedy

Report

data structures, sortings

String Reconstruction

data structures, greedy, sortings, strings

Array Restoration

constructive algorithms, data structures