Binary Spiders

bitmasks, data structures, implementation, math, sortings, trees

MEX of LCM

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

Hemose in ICPC ?

binary search, dfs and similar, implementation, interactive, math, number theory, trees

Removing Leaves

data structures, greedy, implementation, trees

Monster Invaders

dp, greedy, implementation

Grid Xor

constructive algorithms, greedy, implementation, interactive, math

Physical Education Lessons

data structures, implementation, sortings

INI-file

*special problem, implementation

Help King

implementation, probabilities, trees

Suns and Rays

constructive algorithms, dfs and similar, implementation

Suns and Rays

dfs and similar, implementation

Item World

brute force, implementation, sortings

Greedy Elevator

data structures, implementation

Battlefield

geometry, graphs, implementation, shortest paths

Bowls

geometry, implementation

Geometrical problem

implementation

Tests Renumeration

greedy, implementation

Colorado Potato Beetle

dfs and similar, implementation

Printer

binary search, data structures, implementation, sortings

Maze 1D

binary search, greedy, implementation

Automatic Door

implementation

How Many Squares?

implementation

Solitaire

brute force, implementation

Knitting Batik

implementation, math

Ksenia and Pawns

dfs and similar, graphs, implementation, trees

Running Over The Bridges

greedy, implementation, math

Award Ceremony

greedy, implementation

BinCoin

binary search, divide and conquer, hashing, implementation, probabilities, trees

Dima and Magic Guitar

brute force, implementation, math

Evaluate It and Back Again

constructive algorithms, implementation, math

Furlo and Rublo and Game

games, implementation, math

Huge Strings

bitmasks, brute force, dp, implementation, strings

Vladik and chat

brute force, constructive algorithms, dp, implementation, strings

Arthur and Questions

greedy, implementation, math, ternary search

Excitation of Atoms

greedy, implementation

Snake

bitmasks, dfs and similar, graphs, implementation

Largest Beautiful Number

greedy, implementation

Shifting

implementation

Fancy Stack

combinatorics, dp, implementation

Mischievous Shooter

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

Bear and Polynomials

hashing, implementation, math

Hospital Queue

binary search, graphs, greedy, implementation

Tree Folding

dfs and similar, dp, greedy, implementation, trees

Swapping Characters

brute force, hashing, implementation, strings

Gaining Rating

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

Appleman and a Sheet of Paper

data structures, implementation

Brackets in Implications

constructive algorithms, greedy, implementation, math

Vitaly and Advanced Useless Algorithms

dp, greedy, implementation

Divisors

brute force, dfs and similar, implementation, number theory

Vlad and Avoiding X

bitmasks, brute force, dfs and similar, dp, implementation

ace5 and Task Order

constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings

Serval and Shift-Shift-Shift

bitmasks, brute force, constructive algorithms, implementation

Train Maintenance

brute force, data structures, implementation

The Maths Lecture

dp, implementation

Chain Reaction

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

Lights

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

Ela and the Wiring Wizard

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

Three Religions

dp, implementation, strings

Symmetree

dfs and similar, hashing, implementation, trees

Serge and Dining Room

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

Valid Bitonic Permutations

combinatorics, dp, implementation, math, number theory

Let Them Slide

data structures, implementation

Irrigation

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

Water Level

brute force, graphs, greedy, implementation, math

Two Types of Spells

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

Count Seconds

brute force, constructive algorithms, dp, graphs, implementation, math

Not Escaping

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

Bananas in a Microwave

dfs and similar, dp, graphs, implementation

Mike and Frog

brute force, greedy, implementation, math

Equal Binary Subsequences

constructive algorithms, geometry, greedy, implementation, strings

Koa and the Beach (Hard Version)

constructive algorithms, dp, greedy, implementation

Priority Queue

combinatorics, dp, implementation, math, ternary search

Persistent Bookcase

bitmasks, data structures, dfs and similar, implementation

Sum of Remainders

implementation, math, number theory

Great Vova Wall (Version 2)

data structures, implementation

Kuroni and the Score Distribution

constructive algorithms, greedy, implementation, math

Minimal Segment Cover

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

Make It Increasing

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

Game on Tree

implementation, math, probabilities, trees

To Go Or Not To Go?

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

Kate and imperfection

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

Great Vova Wall (Version 1)

greedy, implementation, math

Powerful array

data structures, implementation, math, two pointers

Battleship

*special problem, dfs and similar, implementation

Game with Points

dp, graphs, implementation, shortest paths

Piet

implementation

Crosses

brute force, implementation

Dormitory

dp, implementation

Broken Monitor

brute force, constructive algorithms, greedy, implementation

Hostname Aliases

*special problem, binary search, data structures, implementation, sortings, strings

Hexagons

binary search, implementation, math

Valera and Swaps

constructive algorithms, dsu, graphs, implementation, math, string suffix structures

Compartments

combinatorics, constructive algorithms, greedy, implementation

Main Sequence

greedy, implementation

Vanya and Brackets

brute force, dp, expression parsing, greedy, implementation, strings

Tesla

constructive algorithms, implementation

Vasya's Function

binary search, implementation, math

Follow Traffic Rules

implementation, math

Cubes

games, greedy, implementation

Nastya and a Game

brute force, implementation, math