Die Roll

math, probabilities

Dreamoon and WiFi

bitmasks, brute force, combinatorics, dp, math, probabilities

Journey

dfs and similar, dp, graphs, probabilities, trees

Little Pony and Expected Maximum

probabilities

Archer

math, probabilities

Ilya and Escalator

combinatorics, dp, math, probabilities

Andrey and Problem

greedy, math, probabilities

Bag of mice

dp, games, math, probabilities

Wet Shark and Flowers

combinatorics, math, number theory, probabilities

Santa's Bot

combinatorics, math, probabilities

Bad Luck Island

dp, probabilities

Puzzles

dfs and similar, math, probabilities, trees

Basketball Team

combinatorics, dp, math, probabilities

Jerry's Protest

brute force, combinatorics, dp, probabilities

Intercity Travelling

combinatorics, math, probabilities

Game with String

implementation, probabilities, strings

Fish

bitmasks, dp, probabilities

Fafa and Ancient Alphabet

math, probabilities

Falling Anvils

math, probabilities

Arithmetic Progression

binary search, interactive, number theory, probabilities

Makoto and a Blackboard

dp, math, number theory, probabilities

I'm Feeling Lucky!

probabilities

Let's Play Osu!

dp, math, probabilities

Jeff and Furik

combinatorics, dp, probabilities

Beautiful Mirrors

data structures, dp, math, probabilities

Game on Tree

implementation, math, probabilities, trees

Jon and Orbs

dp, math, probabilities

Subway Pursuit

binary search, interactive, probabilities

Wizards and Huge Prize

dp, math, probabilities

New Year and Arbitrary Arrangement

dp, math, probabilities

Interactive LowerBound

brute force, interactive, probabilities

Fishes

data structures, graphs, greedy, probabilities, shortest paths

Random Query

data structures, math, probabilities, two pointers

Second price auction

bitmasks, probabilities

Shooting Gallery

dp, probabilities

Kuroni and the Punishment

math, number theory, probabilities

Another Sith Tournament

bitmasks, dp, math, probabilities

Maxim and Restaurant

dp, math, probabilities

Magic Trick

combinatorics, math, probabilities

Steps to One

dp, math, number theory, probabilities

ZS and The Birthday Paradox

math, number theory, probabilities

Inversion Expectation

dp, math, probabilities

Lucky Probability

brute force, probabilities

Expected Damage

binary search, combinatorics, probabilities

Dexterina’s Lab

games, matrices, probabilities

Alternating Tree

combinatorics, dfs and similar, divide and conquer, dp, probabilities, trees

Something with XOR Queries

brute force, interactive, probabilities

Kleofáš and the n-thlon

dp, math, probabilities

Willem, Chtholly and Seniorious

data structures, probabilities

Destiny

data structures, probabilities

Vasya and Magic Matrix

dp, math, probabilities

Name That Tune

dp, probabilities, two pointers

LRU

bitmasks, dp, math, probabilities

Ghd

brute force, math, probabilities

Little Elephant and Furik and Rubik

math, probabilities

Hyakugoku and Ladders

dp, probabilities, shortest paths

DZY Loves FFT

probabilities

Gosha is hunting

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

Playlist

math, probabilities, sortings

Tourism

dp, graphs, probabilities

First Digit Law

dp, math, probabilities

Beautiful Mirrors with queries

data structures, probabilities

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Little Artem and Random Variable

dp, implementation, math, probabilities

Painting The Wall

dp, probabilities

Dark Assembly

brute force, probabilities

Broken robot

dp, math, probabilities

Card Bag

dp, math, probabilities

Little Elephant and Broken Sorting

dp, math, probabilities

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

Third Month Insanity

dp, probabilities, trees

Famil Door and Roads

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

Nauuo and Pictures (easy version)

dp, probabilities

Inversions After Shuffle

data structures, probabilities

X-OR

bitmasks, constructive algorithms, divide and conquer, interactive, probabilities

Cards

combinatorics, dp, math, number theory, probabilities

Sonya and Informatics

combinatorics, dp, matrices, probabilities

Square Table

constructive algorithms, math, probabilities

Bath Queue

combinatorics, dp, probabilities

Game with Strings

bitmasks, dp, probabilities

Beautiful Bracket Sequence (easy version)

combinatorics, dp, probabilities

Intergalaxy Trips

probabilities, shortest paths

Wilbur and Trees

dp, math, probabilities, sortings

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Eyes Closed

data structures, probabilities

Tree Queries

data structures, probabilities, trees

Smart Cheater

data structures, math, probabilities

Good Contest

combinatorics, dp, probabilities

Startup Funding

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

Helping People

dp, probabilities

Petya and Tree

binary search, dfs and similar, probabilities, sortings, trees

Tickets

combinatorics, math, probabilities

Inversions problem

dp, probabilities

Bombing

binary search, dp, probabilities

Nauuo and Pictures (hard version)

dp, probabilities

Memory and Casinos

data structures, math, probabilities

Expected Square Beauty

dp, math, probabilities

The Top Scorer

combinatorics, dp, math, probabilities

Serval and Bonus Problem

combinatorics, dp, math, probabilities

World of Darkraft - 2

dp, probabilities