Middle-Out

constructive algorithms, greedy, strings

Running Over The Bridges

greedy, implementation, math

Award Ceremony

greedy, implementation

Music in Car

data structures, greedy, two pointers

Students' Revenge

data structures, greedy, sortings

Guard Duty (medium)

binary search, dp, greedy, sortings

Arthur and Questions

greedy, implementation, math, ternary search

Excitation of Atoms

greedy, implementation

Prairie Partition

binary search, constructive algorithms, greedy, math

Lovely Matrix

dfs and similar, graphs, greedy, sortings

Dog Show

constructive algorithms, data structures, greedy

Byteland, Berland and Disputed Cities

constructive algorithms, greedy

Deletion of Repeats

greedy, hashing, string suffix structures

Largest Beautiful Number

greedy, implementation

Package Delivery

data structures, divide and conquer, greedy

80-th Level Archeology

brute force, data structures, greedy, sortings

Free Market

dp, greedy

Hospital Queue

binary search, graphs, greedy, implementation

Banquet Preparations 2

greedy, sortings, two pointers

Songwriter

greedy, two pointers

Intellectual Inquiry

dp, greedy, strings

Tree Folding

dfs and similar, dp, greedy, implementation, trees

Gaining Rating

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

Sereja and Table

bitmasks, greedy

Short Code

data structures, dp, greedy, strings, trees

Chain Reaction

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

Compressed Tree

dfs and similar, dp, graphs, greedy, sortings, trees

Vitaly and Advanced Useless Algorithms

dp, greedy, implementation

Brackets in Implications

constructive algorithms, greedy, implementation, math

Number Transformation II

greedy, math

Trader Problem

data structures, dsu, greedy, sortings

Jeff and Permutation

greedy

Banquet Preparations 1

greedy

Monsters (hard version)

data structures, greedy

Arthur and Brackets

dp, greedy

LaIS

data structures, dp, greedy

DIY Garland

constructive algorithms, greedy, trees

Ice cream coloring

constructive algorithms, dfs and similar, greedy

Changing Brackets

constructive algorithms, data structures, dp, greedy

Kuro and GCD and XOR and SUM

binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees

Hamiltonian Spanning Tree

dfs and similar, dp, graph matchings, greedy, trees

K and Medians

constructive algorithms, greedy, math

Lights

brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation

The Number Games

data structures, greedy, trees

Ela and the Wiring Wizard

brute force, dp, graphs, greedy, implementation, shortest paths

Two Houses

brute force, graphs, greedy, interactive, sortings

Math Test

bitmasks, brute force, greedy

Between

constructive algorithms, dfs and similar, graphs, greedy

Fill the Matrix

data structures, greedy, math

One-Way Reform

constructive algorithms, dfs and similar, flows, graphs, greedy

Explosions?

binary search, data structures, dp, greedy, math

Table Compression

dfs and similar, dp, dsu, graphs, greedy

Serge and Dining Room

binary search, data structures, graph matchings, greedy, implementation, math, trees

Robots on a Grid

data structures, dfs and similar, dsu, graphs, greedy, matrices

Ants in Leaves

dfs and similar, greedy, sortings, trees

Cute Sequences

binary search, brute force, greedy, math

Sofia and Strings

data structures, greedy, sortings, strings, two pointers

LIS of Sequence

data structures, dp, greedy, hashing, math

Water Level

brute force, graphs, greedy, implementation, math

Tree Queries (Easy Version)

brute force, constructive algorithms, dfs and similar, dp, greedy, trees

notepad.exe

binary search, constructive algorithms, greedy, interactive

Bear and Tower of Cubes

binary search, dp, greedy

Moment of Bloom

constructive algorithms, dfs and similar, graph matchings, graphs, greedy, trees

Cars

2-sat, constructive algorithms, dfs and similar, dsu, graphs, greedy, sortings

Two Types of Spells

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

Nezzar and Nice Beatmap

constructive algorithms, geometry, greedy, math, sortings

Weights Division (hard version)

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

Anonymity Is Important

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

Mike and Frog

brute force, greedy, implementation, math

Figure Fixing

constructive algorithms, dfs and similar, dsu, graphs, greedy, math

Lexicographically Small Enough

brute force, data structures, greedy, strings

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

Happy Line

constructive algorithms, greedy, sortings

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Ezzat and Grid

data structures, dp, greedy

Equilibrium

data structures, dp, greedy

Tourism

dfs and similar, dp, dsu, graphs, greedy, trees

New Game Plus!

constructive algorithms, greedy, math

Divisor Paths

combinatorics, graphs, greedy, math, number theory

Minimum Possible LCM

brute force, greedy, math, number theory

Antenna Coverage

data structures, dp, greedy, sortings

Gold Transfer

binary search, data structures, dp, greedy, interactive, trees

Trees and Segments

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

Sum of Digits

brute force, constructive algorithms, dp, greedy

Paint the Middle

dp, greedy, sortings, two pointers

Kuroni and the Score Distribution

constructive algorithms, greedy, implementation, math

Make k Equal

greedy

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

Three Sequences

constructive algorithms, data structures, greedy, math

GukiZ hates Boxes

binary search, greedy

To Go Or Not To Go?

brute force, dfs and similar, graphs, greedy, implementation, shortest paths

Carrots for Rabbits

binary search, data structures, greedy, math, sortings

Strange Housing

constructive algorithms, dfs and similar, graph matchings, graphs, greedy

Cleaning

data structures, dp, greedy, math

Kate and imperfection

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

Great Vova Wall (Version 1)

greedy, implementation, math

Erase and Extend (Hard Version)

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

Clear the Multiset

data structures, divide and conquer, dp, greedy

Автобус

binary search, data structures, greedy, sortings