Hostname Aliases

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

Levels and Regions

dp

Little Artem and Graph

Little Artem and Time Machine

data structures

Little Artem and Random Variable

dp, implementation, math, probabilities

Bear and Contribution

data structures, greedy, sortings, two pointers

Bear and Polynomials

hashing, implementation, math

Startup Funding

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

Fibonacci-ish

brute force, dp, hashing, implementation, math

Magic Matrix

brute force, divide and conquer, graphs, matrices, trees

Thief in a Shop

divide and conquer, dp, fft, math

Longest Subsequence

brute force, math, number theory

Messenger

data structures, hashing, implementation, string suffix structures, strings

Area of a Star

geometry

Arrow

geometry

Famil Door and Roads

combinatorics, data structures, dfs and similar, dp, probabilities, trees

Babaei and Birthday Cake

data structures, dp

Famil Door and Brackets

dp, strings

Bear and Fair Set

flows, graphs

Zbazi in Zeydabad

data structures, implementation

Magic Numbers

dp

Package Delivery

data structures, divide and conquer, greedy

Group Projects

dp

Simple Skewness

binary search, math, ternary search

Finals in arithmetic

constructive algorithms, implementation, math

Array GCD

dp, greedy, number theory

Ants in Leaves

dfs and similar, greedy, sortings, trees

Wet Shark and Blocks

dp, matrices

Rat Kwesh and Cheese

brute force, constructive algorithms, math

New Year Tree

bitmasks, data structures, trees

Professor GukiZ and Two Arrays

binary search, two pointers

Robot Arm

data structures, geometry

Hamiltonian Spanning Tree

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

XOR and Favorite Number

data structures

Sum of Remainders

implementation, math, number theory

Hexagons

binary search, implementation, math

Multipliers

math, number theory

Running Track

dp, greedy, strings, trees

Necklace

constructive algorithms, math

Square Root of Permutation

combinatorics, constructive algorithms, dfs and similar, graphs, math

New Year and Cleaning

binary search, implementation

New Year and Three Musketeers

data structures, greedy, sortings

New Year and Ancient Prophecy

dp, hashing, strings

Alphabet Permutations

data structures, strings

Vika and Segments

constructive algorithms, data structures, geometry, two pointers

Frogs and mosquitoes

data structures, greedy

Minimum spanning tree for each edge

data structures, dfs and similar, dsu, graphs, trees

Gadgets for dollars and pounds

binary search, greedy, two pointers

Marbles

hashing, strings

Board Game

data structures, dfs and similar

Freelancer's Dreams

geometry

Lieges of Legendre

games, math

Acyclic Organic Compounds

data structures, dfs and similar, dsu, hashing, strings, trees

Kleofáš and the n-thlon

dp, math, probabilities

Lipshitz Sequence

data structures, math

Lomsat gelral

data structures, dfs and similar, dsu, trees

Area of Two Circles' Intersection

geometry

Chocolate Bar

brute force, dp

Nearest vectors

geometry, sortings

Wilbur and Strings

dfs and similar, dp, graphs, strings

Wilbur and Trees

dp, math, probabilities, sortings

REQ

data structures, number theory

Edo and Magnets

brute force, greedy, implementation, two pointers

Max and Bike

binary search, geometry

Warrior and Archer

games

Strange Calculation and Cats

dp, matrices

Happy Tree Party

data structures, dfs and similar, graphs, math, trees

Beautiful Function

constructive algorithms, math

Super M

dfs and similar, dp, graphs, trees

Top Secret Task

dp

Three States

dfs and similar, graphs, shortest paths

Chip 'n Dale Rescue Rangers

binary search, geometry, math

Duff in the Army

data structures, trees

Duff in Beach

dp

Lizard Era: Beginning

meet-in-the-middle

Alice, Bob, Oranges and Apples

number theory

Anton and Ira

constructive algorithms, greedy, math

Superior Periodic Subarrays

number theory

Zublicanes and Mumocrates

dp, trees, two pointers

Kefa and Watch

data structures, hashing, strings

Weakness and Poorness

ternary search

Points on Plane

constructive algorithms, divide and conquer, geometry, greedy, sortings

Invariance of Tree

constructive algorithms, dfs and similar, greedy, trees

Run for beer

dfs and similar, shortest paths

Bulbo

dp, greedy

Bribes

dfs and similar, graphs, trees

Bear and Drawing

constructive algorithms, dfs and similar, trees

CNF 2

constructive algorithms, dfs and similar, graphs, greedy

Minimization

dp, greedy, sortings

Lengthening Sticks

combinatorics, implementation, math

Pig and Palindromes

combinatorics, dp

Tree Requests

binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees

Mausoleum

dp

President and Roads

dfs and similar, graphs, hashing, shortest paths

Max and Min

geometry

Matching Names

dfs and similar, strings, trees

Gerald and Giant Chess

combinatorics, dp, math, number theory

A Simple Task

data structures, sortings, strings

Guess Your Way Out! II

data structures, implementation, sortings

Ann and Half-Palindrome

data structures, dp, graphs, string suffix structures, strings, trees