Andrey and Escape from Capygrad

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

Queue

binary search, data structures

Cows and Sequence

constructive algorithms, data structures, implementation

Magic Triples (Easy Version)

brute force, data structures, math, number theory

Watto and Mechanism

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

Covered Points Count

data structures, implementation, sortings

Game Master

data structures, dfs and similar, dp, graphs, greedy, two pointers

Lexicographically Largest

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

Array Optimization by Deque

data structures, greedy

Shurikens

data structures, greedy, implementation

Matrix Cascade

brute force, constructive algorithms, data structures, dp, greedy, math

Berland Fair

binary search, brute force, data structures, greedy

Alyona and Spreadsheet

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

A and B and Interesting Substrings

data structures, dp, two pointers

Minimal string

data structures, greedy, strings

SUM and REPLACE

brute force, data structures, dsu, number theory

Tree and Queries

data structures, dfs and similar, trees

Not Equal on a Segment

data structures, implementation

A and B and Lecture Rooms

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

Integral Array

brute force, constructive algorithms, data structures, math

Two Hundred Twenty One (easy version)

data structures, dp, math

ATM and Students

binary search, data structures, two pointers

Interesting Array

constructive algorithms, data structures, trees

String Reversal

data structures, greedy, strings

Skyscrapers (hard version)

data structures, dp, greedy

Captain Flint and Treasure

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

Optimal Subsequences (Easy Version)

data structures, greedy

Propagating tree

data structures, dfs and similar, trees

Blood Cousins

binary search, data structures, dfs and similar, trees

Present

binary search, data structures, greedy

Cow and Fields

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

Two Teams

data structures, implementation, sortings

Slime Escape

data structures, dp, greedy, two pointers

Binary Numbers AND Sum

data structures, implementation, math

Cosmic Tables

data structures, implementation

Lorenzo Von Matterhorn

brute force, data structures, implementation, trees

Anya and Smartphone

constructive algorithms, data structures, implementation

Fixed Prefix Permutations

binary search, bitmasks, data structures, hashing, math, sortings

Slimes

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

Multiple Testcases

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

Glider

binary search, data structures, two pointers

Connected Components?

data structures, dfs and similar, dsu, graphs

Buying gifts

data structures, greedy, sortings

Molly's Chemicals

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

Petya and Array

data structures, divide and conquer, two pointers

Bear and Blocks

binary search, data structures, dp, math

Weights Division (easy version)

data structures, dfs and similar, greedy, trees

Years

data structures, sortings

A Simple Task

data structures, sortings, strings

XOR Construction

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

Difference Array

brute force, data structures, implementation, sortings

Misha and Forest

constructive algorithms, data structures, greedy, sortings, trees

Range and Partition

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

Array Stabilization (GCD version)

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

Permutation Restoration

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

Max GEQ Sum

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

Old Floppy Drive

binary search, data structures, math

Water Tree

data structures, dfs and similar, graphs, trees

Medium Design

brute force, data structures, dp, greedy, sortings

Legacy

data structures, graphs, shortest paths

Choosing flowers

binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers

Up the Strip (simplified version)

brute force, data structures, dp, math, number theory

Holes

data structures, dsu

Vessels

data structures, dsu, implementation, trees

Rating Compression

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

Meta-set

brute force, combinatorics, data structures, hashing, math

Berserk Monsters

brute force, data structures, dsu, implementation, math

Milking cows

data structures, greedy

The Fair Nut and the Best Path

data structures, dp, trees

New Year Tree

bitmasks, data structures, trees

Permutation Graph

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

Ones and Twos

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

After Training

data structures, implementation, math

Dominant Indices

data structures, dsu, trees

Bash and a Tough Math Puzzle

data structures, number theory

Buy a Ticket

data structures, graphs, shortest paths

Little Elephant and Cards

binary search, data structures

Clear the Multiset

data structures, divide and conquer, dp, greedy

Burenka and Traditions (hard version)

data structures, dp, greedy

Erase and Extend (Hard Version)

binary search, data structures, greedy, hashing, string suffix structures, strings, two pointers

Recommendations

data structures, greedy, sortings

Omsk Metro (simple version)

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

Maximum Submatrix 2

data structures, dp, implementation, sortings

Irreducible Anagrams

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

1-Trees and Queries

data structures, dfs and similar, shortest paths, trees

Too Many Segments (hard version)

data structures, greedy, sortings

Reset K Edges

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

Desktop Rearrangement

data structures, greedy, implementation

Pair of Numbers

binary search, brute force, data structures, math, two pointers

Nearest Excluded Points

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

Frog Traveler

data structures, dfs and similar, dp, graphs, shortest paths, two pointers

Buy Low Sell High

constructive algorithms, data structures, greedy

GCD of an Array

brute force, data structures, hashing, implementation, math, number theory, sortings, two pointers

String Coloring (hard version)

data structures, dp

Remainder Problem

brute force, data structures, implementation

Restore Permutation

binary search, data structures, greedy, implementation

Clique Problem

data structures, dp, greedy, implementation, sortings

One-Dimensional Battle Ships

binary search, data structures, greedy, sortings

Preparing for Merge Sort

binary search, data structures

Discrete Centrifugal Jumps

data structures, dp, graphs