Number Clicker

divide and conquer, graphs, meet-in-the-middle, number theory

Game

math

The Moral Dilemma

Compute Power

binary search, dp, greedy

Nastya and King-Shamans

binary search, data structures

Concise and clear

brute force, greedy, implementation, math

GCD Counting

divide and conquer, dp, dsu, number theory, trees

Flow Control

dfs and similar, dp, greedy, trees

A Trance of Nightfall

dp, geometry, matrices, probabilities

A Shade of Moonlight

binary search, geometry, math, sortings, two pointers

Oppa Funcan Style Remastered

graphs, math, number theory, shortest paths

Prince's Problem

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

Perfect Encoding

fft, math

AND Graph

bitmasks, dfs and similar, dsu, graphs

Team Players

combinatorics

NN country

binary search, data structures, trees

Arkady and Rectangles

data structures

Elevator

dp, graphs, shortest paths

The Meeting Place Cannot Be Changed

dfs and similar, graphs

Billiard

geometry, number theory

K Paths

combinatorics, data structures, dp, fft, math

Magic multisets

data structures

Round Marriage

binary search, graph matchings, greedy

Cactus to Tree

dp, graphs, trees

Kuro and Topological Parity

dp

Minimal k-covering

flows, graphs

Degree Set

constructive algorithms, graphs, implementation

Hag's Khashba

geometry

Circles of Waiting

math

Frequency of String

hashing, string suffix structures, strings

Cutting Rectangle

brute force, math, number theory

Visible Black Areas

data structures, dsu, geometry, trees

Simple Cycles Edges

dfs and similar, graphs, trees

Partitions

combinatorics, math, number theory

k-substrings

binary search, hashing, string suffix structures

Santa's Gift

data structures, trees

Bandit Blues

combinatorics, dp, fft, math

Mahmoud and Ehab and yet another xor task

bitmasks, dp, math, matrices

Lightsabers (hard)

fft

Guard Duty (hard)

geometry

Hyperspace Jump (hard)

Encryption (hard)

data structures, dp

Death Stars (hard)

Heaps

dp, trees

Icicles

Scissors

brute force, strings

Path Counting

combinatorics, dp

2 + 2 != 4

Astronomy

geometry, probabilities

Binary Cards

brute force

Almost Increasing Array

data structures, dp

Fibonacci String Subsequences

combinatorics, dp, matrices

Machine Learning

brute force, data structures

Cutlet

data structures, dp

Shortest Path Queries

bitmasks, data structures, dsu, graphs

Erasing Substrings

bitmasks, dp, greedy

Iqea

data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees

World of Tank

dp, greedy

Fafa and Array

data structures, greedy

A Preponderant Reunion

constructive algorithms, dp

A Creative Cutout

brute force, combinatorics, math

A Colourful Prospect

geometry, graphs

Palindrome Partition

dp, string suffix structures, strings

Escape Through Leaf

data structures, dp, geometry

Team Work

combinatorics, dp, math

Coins Exhibition

data structures, dp, math

Game with Tokens

data structures, games, implementation

Пограничные врата

BuberPool Taxi Optimization

*special problem, interactive

Parametric Circulation

binary search, flows

May Holidays

data structures, trees

Aztec Catacombs

constructive algorithms

Minimal Subset Difference

dp

Wardrobe

dp, greedy

Contact ATC

Public Service

constructive algorithms, graphs, trees

Perpetual Subtraction

fft, math, matrices

Picking Strings

constructive algorithms, implementation, strings

Divisibility

constructive algorithms, dp, greedy, number theory

Labyrinth-14

Labyrinth-13

Labyrinth-12

Labyrinth-11

Labyrinth-10

Labyrinth-9

Labyrinth-8

Labyrinth-7

Labyrinth-6

Labyrinth-5

Labyrinth-4

Labyrinth-3

Labyrinth-2

Labyrinth-1

Tanks

dp, greedy, implementation

A Game With Numbers

games, graphs, shortest paths

Upside Down

data structures, string suffix structures, strings, trees

Stranger Trees

dp, math, matrices, trees

Pollywog

combinatorics, dp, matrices

Jamie and Tree

data structures, trees

Imbalance Value of a Tree

data structures, dsu, graphs, trees