Candy Shop

greedy

Late For Work (submissions are not allowed)

data structures, greedy, schedules, shortest paths

Landscaping

binary search, geometry, two pointers

Grid Game 2

games, number theory

Restore the Tree

graphs, greedy, trees

Framing Pictures

geometry

Deja Vu

constructive algorithms, graphs, implementation

Hellish Constraints

brute force, dp, two pointers

Strange Triples

brute force, math, number theory

Chess Championship

constructive algorithms, flows, greedy, math

Hero to Zero

graph matchings, math

Cactus to Tree

dp, graphs, trees

Kirchhoff's Current Loss

math

Mahmoud and Ehab and the final stage

data structures, strings

Two Rooted Trees

data structures, implementation, trees

Cactus Not Enough

dfs and similar, graph matchings, graphs

Mister B and Beacons on Field

number theory

Wavy numbers

brute force, dfs and similar, meet-in-the-middle, sortings

Bakery

data structures, dsu

Digital Patterns

combinatorics, data structures, implementation, math

Mister B and Astronomers

number theory

Sheep

binary search, greedy

Pebbles and Beads

data structures, geometry

Karen and Neighborhood

binary search, constructive algorithms, implementation

Gears

brute force, geometry, math

Meta-universe

data structures

Take Metro

brute force, data structures, graphs

Lucky Pair

combinatorics, data structures, implementation

Problem of offices

constructive algorithms, dfs and similar, dp, trees

Tape Programming

data structures, implementation

Bitonix' Patrol

bitmasks, brute force, combinatorics, dfs and similar, math

Missing Subarray Sum

constructive algorithms

Symmetric Projections

geometry

Evaluate RBS

data structures, geometry, implementation, math, sortings

Strange Function

dp

GCD Master (hard version)

greedy, math, sortings

A Creative Cutout

brute force, combinatorics, math

Subsequences Return

dp, matrices

Jzzhu and Squares

dp, math, number theory

PalindORme

combinatorics, dp

Wrap Around

dp, strings

Divide Powers

constructive algorithms, greedy

Long Binary String

bitmasks, math, matrices, meet-in-the-middle, number theory

Johnny and James

greedy, implementation, math, trees

TOF

dfs and similar, graphs

Bearish Fanpages

Tree or not Tree

data structures, divide and conquer, implementation, trees

Bear and Chase

brute force, dfs and similar, graphs, implementation, math, probabilities

Basis

combinatorics, fft, math, number theory

Triangle Platinum?

brute force, combinatorics, implementation, interactive, math, probabilities

Fibonacci Number

brute force, math, matrices

GCD Master (easy version)

greedy, math, number theory, sortings

Sherlock and the Encrypted Data

bitmasks, combinatorics, dp

Delete The Edges

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

Almost Same Distance

dfs and similar, graphs

New task

data structures

Festival Organization

combinatorics, math, number theory

Ruminations on Ruminants

geometry, math

Numbers

Linear Congruential Generator

number theory

RC Kaboom Show

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

Substring Search

bitmasks, brute force, fft

Snowy Mountain

data structures, dfs and similar, graphs, greedy, shortest paths, trees

Cut Length

geometry

May Holidays

data structures, trees

Ones

dp, greedy, shortest paths

MEX Game 2 (Easy Version)

binary search, brute force, greedy

Sereja and Squares

dp

Distinctification

data structures, dsu, greedy

Shake It!

combinatorics, dp, flows, graphs

Anti-Increasing Addicts

constructive algorithms, dp, greedy, math

Pollywog

combinatorics, dp, matrices

Graph Coloring (hard version)

brute force, combinatorics, divide and conquer, dp, fft, graphs

Tubular Bells

interactive, math, number theory, probabilities

Multithreading (Easy Version)

combinatorics, fft, math

Andrew and Chemistry

dp, hashing, trees

Two Segments

data structures

Forbidden Value

data structures, dp

Nanami's Power Plant

flows

Cakes for Clones

dp

Playing Around the Table

constructive algorithms, greedy, implementation

Group Division

constructive algorithms, dfs and similar, graphs, greedy

Coins Exhibition

data structures, dp, math

Tiles for Bathroom

data structures, sortings, two pointers

Expected Components

combinatorics, math, number theory, probabilities

Cycles in product

combinatorics, divide and conquer, trees

New Year and Cake

geometry, two pointers

Chattering

Noble Knight's Path

data structures, trees

Converging Array (Hard Version)

dp, math

Transferring Pyramid

dp

Fence

binary search, data structures, string suffix structures

Omkar and Pies

bitmasks, dfs and similar, dp, math, shortest paths

Red-Blue Graph

constructive algorithms, flows

Tree and XOR

strings, trees

Electric Charges

binary search, dp

Doctor's Brown Hypothesis

dfs and similar, graphs, math, number theory

Black Widow

dp, graphs, implementation, math

Lazy Numbers

binary search, math

Phys Ed Online

data structures, dp, greedy