Divisibility

constructive algorithms, dp, greedy, number theory

Maximums and Minimums

combinatorics, data structures, divide and conquer, number theory

Artistic Partition

divide and conquer, dp, number theory

Number of Binominal Coefficients

dp, math, number theory

Maximizing Root

dfs and similar, dp, graphs, math, number theory, trees

Quadratic Set

constructive algorithms, hashing, math, number theory

Paths

data structures, number theory

Mishka and Divisors

dp, number theory

Beautiful Set

brute force, number theory

Euclid Guess

constructive algorithms, flows, graph matchings, math, number theory

Divisor Set

divide and conquer, fft, greedy, math, number theory

Four Divisors

data structures, dp, math, number theory, sortings, two pointers

Oppa Funcan Style Remastered

graphs, math, number theory, shortest paths

Kuzya and Homework

data structures, number theory

Cutting Rectangle

brute force, math, number theory

Product transformation

combinatorics, math, number theory

Cube Problem

brute force, math, number theory

Another n-dimensional chocolate bar

dp, math, meet-in-the-middle, number theory

Martian Luck

math, number theory

Periodical Numbers

combinatorics, dp, number theory

To Make 1

bitmasks, constructive algorithms, dp, greedy, number theory

Cows and Cool Sequences

dp, math, number theory

Making It Bipartite

flows, graph matchings, graphs, number theory

Nephren Runs a Cinema

chinese remainder theorem, combinatorics, math, number theory

Move by Prime

combinatorics, math, number theory

GCD is Greater

brute force, data structures, math, number theory

Sum Over Subsets

combinatorics, math, number theory

Space Isaac

hashing, number theory

Superhero's Job

dfs and similar, dp, hashing, math, number theory

Sasha and a Very Easy Test

data structures, number theory

Three Horses

constructive algorithms, math, number theory

Drazil and His Happy Friends

math, number theory

Last Man Standing

brute force, data structures, number theory

Cyclic Cipher

chinese remainder theorem, data structures, implementation, number theory, two pointers

Gifts from Grandfather Ahmed

dp, math, number theory

White, Black and White Again

combinatorics, number theory

Doctor's Brown Hypothesis

dfs and similar, graphs, math, number theory

Electrical Efficiency

combinatorics, data structures, dp, math, number theory, trees

Lostborn

dp, math, number theory

Coprime Permutation

combinatorics, number theory

Expected Components

combinatorics, math, number theory, probabilities

Equal LCM Subsets

data structures, math, number theory

Location

data structures, dp, math, number theory

Levko and Sets

number theory

Visit of the Great

math, number theory

Enchanted Matrix

bitmasks, interactive, number theory

Tubular Bells

interactive, math, number theory, probabilities

Equal Product

data structures, math, number theory, two pointers

Swimmers in the Pool

dp, fft, math, number theory

Linear Congruential Generator

number theory

Festival Organization

combinatorics, math, number theory

Tractor College

implementation, math, number theory, ternary search

GCD Master (easy version)

greedy, math, number theory, sortings

Maximum Sine

binary search, data structures, number theory

Bosco and Particle

dp, math, number theory, strings

Divisibility Rules

math, number theory

Morrowindows

math, number theory

Guess the Perimeter

binary search, interactive, number theory

Basis

combinatorics, fft, math, number theory

Gold Experience

constructive algorithms, graphs, math, number theory, probabilities

Prime Divisors Selection

binary search, greedy, math, number theory

Shaass and Painter Robot

brute force, implementation, number theory

Long Binary String

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

X-mouse in the Campus

bitmasks, math, number theory

Jzzhu and Squares

dp, math, number theory

Rotatable Number

math, number theory

Appropriate Team

bitmasks, math, number theory

Doodle Jump

math, number theory

Gregor and the Odd Cows (Hard)

brute force, geometry, math, number theory

Prime Segment

*special problem, brute force, math, number theory

Wooden Raft

binary search, math, number theory

Radix sum

fft, math, number theory

Become Big For Me

combinatorics, constructive algorithms, greedy, math, number theory

Mister B and Astronomers

number theory

Fedya the Potter

binary search, implementation, math, number theory

Big Number and Remainder

*special problem, math, number theory

Mister B and Beacons on Field

number theory

New Year and the Factorisation Collaboration

interactive, math, number theory

Power Substring

math, number theory

School Clubs

dp, fft, math, number theory, probabilities

Weird LCM Operations

brute force, constructive algorithms, number theory

Test Data Generation

combinatorics, divide and conquer, dp, fft, math, number theory

Epic Convolution

chinese remainder theorem, fft, math, number theory

Perfectionist Arkadiy

*special problem, number theory

Strange Triples

brute force, math, number theory

New Year Running

number theory, trees

Cyclic Sum

data structures, fft, number theory

Grid Game 2

games, number theory

Burenka, an Array and Queries

data structures, math, number theory

Bugaboo

bitmasks, constructive algorithms, dp, number theory

Heidi Learns Hashing (Hard)

fft, math, number theory

Fake bullions

combinatorics, dfs and similar, dp, graphs, number theory

Optimizations From Chelsu

divide and conquer, dp, number theory, trees

Two IP Cameras

*special problem, math, number theory

Maximum GCD Sum Queries

bitmasks, brute force, dp, implementation, number theory

Xor-quiz

constructive algorithms, dp, interactive, math, number theory

Painting Numbers

*special problem, data structures, greedy, number theory

Ela and Prime GCD

constructive algorithms, math, number theory

Arranging Crystal Balls

data structures, divide and conquer, divide and conquer, dp, geometry, graphs, number theory

Pens And Days Of Week

*special problem, binary search, number theory