Vlad and the Mountains

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

MEX vs MED

math, two pointers

Into Blocks (easy version)

data structures, dsu, greedy, implementation, two pointers

Segments Removal

data structures, dsu, flows, implementation, two pointers

Gadgets for dollars and pounds

binary search, greedy, two pointers

Maximum Balanced Circle

constructive algorithms, dp, greedy, two pointers

Pinball

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

Tokitsukaze and Strange Rectangle

data structures, divide and conquer, sortings, two pointers

Castle Defense

binary search, data structures, greedy, two pointers

Circular Mirror

binary search, combinatorics, geometry, math, two pointers

Dima and Trap Graph

binary search, data structures, dfs and similar, dsu, shortest paths, two pointers

Subway Innovation

greedy, math, two pointers

Table with Letters - 2

brute force, two pointers

Diverse Substrings

dp, strings, two pointers

Present to Mom

binary search, two pointers

Morning run

binary search, math, two pointers

Ancient Berland Hieroglyphs

two pointers

Maximum Value

binary search, math, sortings, two pointers

GCD of an Array

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

Cut

binary search, data structures, dp, graphs, number theory, two pointers

Two Arrays

binary search, brute force, combinatorics, constructive algorithms, dp, two pointers

Boring Segments

data structures, sortings, trees, two pointers

Array Partition

binary search, data structures, greedy, two pointers

Pencils and Boxes

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

MEX vs DIFF

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

Flying Sort (Easy Version)

dp, greedy, two pointers

Send Boxes to Alice (Hard Version)

constructive algorithms, greedy, math, number theory, ternary search, two pointers

OpenStreetMap

data structures, two pointers

Speedrun

brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers

Range Deleting

binary search, combinatorics, data structures, two pointers

Sheikh (Hard Version)

binary search, bitmasks, brute force, greedy, implementation, two pointers

Two strings

binary search, hashing, strings, two pointers

Cartons of milk

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

Petya, Petya, Petr, and Palindromes

binary search, brute force, data structures, two pointers

Towers

dp, greedy, two pointers

Cut Substrings

combinatorics, dp, hashing, strings, two pointers

Assimilation IV

combinatorics, dp, math, probabilities, two pointers

Santa Claus and Tangerines

binary search, data structures, greedy, two pointers

Social Network

greedy, two pointers

Conveyor

sortings, two pointers

Context Advertising

dp, two pointers

Mice

greedy, two pointers

Significant Cups

*special problem, binary search, data structures, two pointers

Powerful array

data structures, implementation, math, two pointers

Erase and Extend (Hard Version)

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

The Bakery

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

Kate and imperfection

greedy, implementation, math, number theory, sortings, two pointers

Travelling Salesman Problem

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

Paint the Middle

dp, greedy, sortings, two pointers

Special Segments of Permutation

data structures, divide and conquer, dsu, two pointers

Trees and Segments

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

Prefixes and Suffixes

constructive algorithms, strings, two pointers

Not Escaping

data structures, dp, implementation, shortest paths, two pointers

Weights Division (hard version)

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

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

Irrigation

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

Two Bracket Sequences

dp, strings, two pointers

Professor GukiZ and Two Arrays

binary search, two pointers

Vlad and the Nice Paths (hard version)

binary search, combinatorics, data structures, dp, math, two pointers

Gaining Rating

binary search, greedy, implementation, math, sortings, two pointers

Songwriter

greedy, two pointers

Banquet Preparations 2

greedy, sortings, two pointers

Music in Car

data structures, greedy, two pointers

Lucky Tickets

binary search, data structures, sortings, two pointers

Count Pairs

math, matrices, number theory, two pointers

Fixed Point Removal

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

LCM Sum (easy version)

binary search, brute force, combinatorics, math, number theory, two pointers

Excellent Arrays

binary search, combinatorics, constructive algorithms, implementation, math, sortings, two pointers

Delete a Segment

brute force, constructive algorithms, data structures, dp, graphs, sortings, trees, two pointers

Earth Wind and Fire

constructive algorithms, greedy, math, sortings, two pointers

PermutationForces II

brute force, combinatorics, greedy, sortings, trees, two pointers

There Should Be a Lot of Maximums

brute force, data structures, dfs and similar, dp, trees, two pointers

Max to the Right of Min

binary search, data structures, divide and conquer, dp, dsu, two pointers

Infinite Card Game

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

Balance Addicts

combinatorics, dp, math, two pointers

Vika and Segments

constructive algorithms, data structures, geometry, two pointers

Rectangle Shrinking

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

Li Hua and Array

brute force, data structures, dsu, math, number theory, two pointers

Bamboo Partition

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

Decomposition

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

Bipartite Segments

binary search, data structures, dfs and similar, dsu, graphs, two pointers

New Passenger Trams

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

Discarding Game

dp, greedy, two pointers

Edo and Magnets

brute force, greedy, implementation, two pointers

Mashmokh and Water Tanks

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

Imagination Castle

dp, games, two pointers

Race

brute force, implementation, two pointers

Archer's Shot

binary search, geometry, math, two pointers

Transportation

greedy, sortings, two pointers

Fruit Sequences

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

Complicated Computations

binary search, data structures, two pointers

Bombs

data structures, two pointers

A Bit Similar

bitmasks, brute force, hashing, string suffix structures, strings, two pointers

Make It Connected

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

Korney Korneevich and XOR (hard version)

binary search, brute force, dp, greedy, two pointers

Chopping Carrots (Hard Version)

brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers

Minimum Array

binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers

Bored Bakry

bitmasks, greedy, math, two pointers

Prime Gift

binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers

Flying Sort (Hard Version)

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