Die Roll

math, probabilities

Special Permutation

constructive algorithms, probabilities

Dreamoon and WiFi

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

Red-Blue Shuffle

math, probabilities

Journey

dfs and similar, dp, graphs, probabilities, trees

Random Events

dp, math, probabilities

Archer

math, probabilities

Little Pony and Expected Maximum

probabilities

Ilya and Escalator

combinatorics, dp, math, probabilities

Bag of mice

dp, games, math, probabilities

Santa's Bot

combinatorics, math, probabilities

Wet Shark and Flowers

combinatorics, math, number theory, probabilities

Need for Pink Slips

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

Andrey and Problem

greedy, math, probabilities

Bad Luck Island

dp, probabilities

Checkpoints

brute force, constructive algorithms, greedy, math, probabilities

Puzzles

dfs and similar, math, probabilities, trees

Fish

bitmasks, dp, probabilities

Basketball Team

combinatorics, dp, math, probabilities

Intercity Travelling

combinatorics, math, probabilities

Let's Play Osu!

dp, math, probabilities

Jerry's Protest

brute force, combinatorics, dp, probabilities

Game with String

implementation, probabilities, strings

Beautiful Mirrors

data structures, dp, math, probabilities

Arithmetic Progression

binary search, interactive, number theory, probabilities

Fafa and Ancient Alphabet

math, probabilities

Game on Tree

implementation, math, probabilities, trees

Falling Anvils

math, probabilities

Makoto and a Blackboard

dp, math, number theory, probabilities

I'm Feeling Lucky!

probabilities

Jon and Orbs

dp, math, probabilities

Jeff and Furik

combinatorics, dp, probabilities

Subway Pursuit

binary search, interactive, probabilities

New Year and Arbitrary Arrangement

dp, math, probabilities

Tree Array

brute force, combinatorics, dp, graphs, math, probabilities, trees

Wizards and Huge Prize

dp, math, probabilities

Interactive LowerBound

brute force, interactive, probabilities

Random Query

data structures, math, probabilities, two pointers

Messages

brute force, dp, greedy, probabilities, sortings

Willem, Chtholly and Seniorious

data structures, probabilities

Love-Hate

bitmasks, brute force, dp, probabilities

Destiny

data structures, probabilities

Fishes

data structures, graphs, greedy, probabilities, shortest paths

Kuroni and the Punishment

math, number theory, probabilities

Another Sith Tournament

bitmasks, dp, math, probabilities

Steps to One

dp, math, number theory, probabilities

Assimilation IV

combinatorics, dp, math, probabilities, two pointers

Shooting Gallery

dp, probabilities

Expected Damage

binary search, combinatorics, probabilities

Second price auction

bitmasks, probabilities

Gosha is hunting

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

Inversion Expectation

dp, math, probabilities

Alternating Tree

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

Ghd

brute force, math, probabilities

Vasya and Magic Matrix

dp, math, probabilities

Magic Trick

combinatorics, math, probabilities

Maxim and Restaurant

dp, math, probabilities

Dexterina’s Lab

games, matrices, probabilities

Kleofáš and the n-thlon

dp, math, probabilities

Lucky Probability

brute force, probabilities

ZS and The Birthday Paradox

math, number theory, probabilities

Robot Cleaner Revisit

implementation, math, probabilities

Bubble Strike

combinatorics, math, probabilities, ternary search

Crypto Lights

combinatorics, dp, math, probabilities

Something with XOR Queries

brute force, interactive, probabilities

Broken robot

dp, math, probabilities

Cards

combinatorics, dp, math, number theory, probabilities

LRU

bitmasks, dp, math, probabilities

Name That Tune

dp, probabilities, two pointers

Tourism

dp, graphs, probabilities

Card Bag

dp, math, probabilities

Hyakugoku and Ladders

dp, probabilities, shortest paths

First Digit Law

dp, math, probabilities

Little Elephant and Furik and Rubik

math, probabilities

Beautiful Mirrors with queries

data structures, probabilities

DZY Loves FFT

probabilities

Sports Betting

bitmasks, combinatorics, dp, graphs, math, probabilities

Intergalaxy Trips

probabilities, shortest paths

Little Elephant and Broken Sorting

dp, math, probabilities

Playlist

math, probabilities, sortings

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

X-OR

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

Little Artem and Random Variable

dp, implementation, math, probabilities

Painting The Wall

dp, probabilities

Sonya and Informatics

combinatorics, dp, matrices, probabilities

Nauuo and Pictures (easy version)

dp, probabilities

Beautiful Bracket Sequence (easy version)

combinatorics, dp, probabilities

Tree Queries

data structures, probabilities, trees

Famil Door and Roads

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

Mushroom Gnomes - 2

binary search, data structures, probabilities, sortings

Inversions After Shuffle

data structures, probabilities

Third Month Insanity

dp, probabilities, trees

Dark Assembly

brute force, probabilities

Bath Queue

combinatorics, dp, probabilities

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Game with Strings

bitmasks, dp, probabilities

Good Contest

combinatorics, dp, probabilities

Eyes Closed

data structures, probabilities

Square Table

constructive algorithms, math, probabilities

Wilbur and Trees

dp, math, probabilities, sortings