I'm bored with life

implementation, math, number theory

Okabe and Banana Trees

brute force, math

Mister B and Angle in Polygon

constructive algorithms, geometry, math

Mister B and PR Shifts

data structures, implementation, math

Level Generation

binary search, math, ternary search

Diplomas and Certificates

implementation, math

Really Big Numbers

binary search, brute force, dp, math

Makes And The Product

combinatorics, implementation, math, sortings

Treasure Hunt

implementation, math, number theory

Karen and Test

brute force, combinatorics, constructive algorithms, math

The Golden Age

brute force, math

Straight <<A>>

implementation, math

Surprise me!

divide and conquer, math, number theory, trees

Do you want a date?

implementation, math, sortings

Average Sleep Time

data structures, implementation, math

Fake NP

greedy, math

Minimum number of steps

combinatorics, greedy, implementation, math

Find Amir

constructive algorithms, greedy, math

Maximal GCD

constructive algorithms, greedy, math

Send the Fool Further! (hard)

dfs and similar, dp, math, trees

Marmots (hard)

math, probabilities

Marmots (medium)

math

Marmots (easy)

math

k-Factorization

implementation, math, number theory

Replace All

combinatorics, dp, math

Choosing Carrot

games, math

Cutting Carrot

geometry, math

Mice problem

geometry, implementation, math, sortings

Oleg and shares

implementation, math

Colored Balls

greedy, math, number theory

Divide by Three

dp, greedy, math, number theory

Masha and geometric depression

brute force, implementation, math

Anastasia and pebbles

implementation, math

Not Afraid

greedy, implementation, math

The Monster

brute force, math, number theory

Anton and School - 2

combinatorics, dp, math, number theory

Anton and Fairy Tale

binary search, math

Pupils Redistribution

constructive algorithms, math

Shell Game

constructive algorithms, implementation, math

The Holmes Children

math, number theory

Molly's Chemicals

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

Big Number and Remainder

*special problem, math, number theory

Test Data Generation

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

Prairie Partition

binary search, constructive algorithms, greedy, math

Success Rate

binary search, math

Vulnerable Kerbals

constructive algorithms, dp, graphs, math, number theory

Voltage Keepsake

binary search, math

Maximize Sum of Digits

*special problem, implementation, math

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Jon and Orbs

dp, math, probabilities

Mahmoud and a xor trip

bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees

Mahmoud and a Triangle

constructive algorithms, geometry, greedy, math, number theory, sortings

Math, math everywhere

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

Artsem and Saunders

constructive algorithms, dsu, math

Table Tennis Game 2

math

Neverending competitions

implementation, math

Taymyr is calling you

brute force, implementation, math

Timofey and remoduling

brute force, implementation, math, number theory

k-th divisor

math, number theory

Dasha and friends

brute force, implementation, math

Dasha and Stairs

brute force, constructive algorithms, implementation, math

Petr and a calendar

implementation, math

Geometrical Progression

brute force, math, number theory

Ability To Convert

constructive algorithms, dp, greedy, math, strings

Unfair Poll

binary search, constructive algorithms, implementation, math

Holiday Of Equality

implementation, math

Bash's Big Day

greedy, math, number theory

Long number

expression parsing, math, number theory

Byteland coins

combinatorics, dp, math

PolandBall and Many Other Balls

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

PolandBall and Hypothesis

brute force, graphs, math, number theory

Santa Claus and Candies

dp, greedy, math

New Year and Rating

binary search, greedy, math

New Year and Hurry

binary search, brute force, implementation, math

Bachgold Problem

greedy, implementation, math, number theory

Santa Claus and Robot

constructive algorithms, math

Santa Claus and a Place in a Class

implementation, math

Igor and Interesting Numbers

brute force, combinatorics, dp, math

Display Size

brute force, math

Numbers Exchange

greedy, implementation, math

Green and Black Tea

constructive algorithms, greedy, math

Tram

constructive algorithms, implementation, math

Compote

implementation, math

Vladik and fractions

brute force, constructive algorithms, math, number theory

Arpa’s obvious problem and Mehrdad’s terrible solution

brute force, math, number theory

Arpa’s hard exam and Mehrdad’s naive cheat

implementation, math, number theory

Arpa's loud Owf and Mehrdad's evil plan

dfs and similar, math

Gosha is hunting

brute force, data structures, dp, flows, math, probabilities, sortings

Dirty plates

constructive algorithms, math

Chess Championship

constructive algorithms, flows, greedy, math

Permutations

math, matrices

Taxes

math, number theory

Tennis Championship

combinatorics, constructive algorithms, greedy, math

Anton and School

bitmasks, constructive algorithms, implementation, math

Anton and Digits

brute force, greedy, implementation, math

Sleep in Class

constructive algorithms, data structures, math, two pointers

Parade

math

Sanatorium

binary search, constructive algorithms, greedy, implementation, math

Buy a Shovel

brute force, constructive algorithms, implementation, math

Video Cards

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