Expected Components

combinatorics, math, number theory, probabilities

A Random Code Problem

combinatorics, dp, math, number theory, probabilities

Robot Cleaner Revisit

implementation, math, probabilities

Messages

brute force, dp, greedy, probabilities, sortings

Party Organization

brute force, math, probabilities

Bubble Strike

combinatorics, math, probabilities, ternary search

The Mind

constructive algorithms, interactive, probabilities

Game of Chance

math, probabilities

Laser Beams

*special problem, geometry, probabilities

Tubular Bells

interactive, math, number theory, probabilities

DIY Tree

graphs, greedy, math, probabilities

Sports Betting

bitmasks, combinatorics, dp, graphs, math, probabilities

Need for Pink Slips

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

Tree Array

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

Bingo

bitmasks, combinatorics, dp, math, probabilities

Median Queries

constructive algorithms, interactive, probabilities

Assimilation IV

combinatorics, dp, math, probabilities, two pointers

Crypto Lights

combinatorics, dp, math, probabilities

Love-Hate

bitmasks, brute force, dp, probabilities

Is It Rated?

greedy, interactive, math, probabilities

School Clubs

dp, fft, math, number theory, probabilities

Odd Mineral Resource

binary search, bitmasks, brute force, data structures, probabilities, trees

Nezzar and Chocolate Bars

combinatorics, fft, math, probabilities

Random Events

dp, math, probabilities

Red-Blue Shuffle

math, probabilities

Special Permutation

constructive algorithms, probabilities

Checkpoints

brute force, constructive algorithms, greedy, math, probabilities

Olha and Igor

interactive, probabilities, trees

Expected Damage

binary search, combinatorics, probabilities

ZS Shuffles Cards

combinatorics, dp, math, probabilities

Circular Dungeon

greedy, math, probabilities

X-OR

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

James and the Chase

dfs and similar, graphs, probabilities, trees

Find a Gift

binary search, interactive, probabilities

Slime and Biscuits

math, probabilities

Nastya and Bees

graphs, interactive, probabilities

Battalion Strength

data structures, divide and conquer, probabilities

Tourism

dp, graphs, probabilities

Kuroni and the Punishment

math, number theory, probabilities

Good Contest

combinatorics, dp, probabilities

LCC

data structures, math, matrices, probabilities

Santa's Bot

combinatorics, math, probabilities

Cards

combinatorics, dp, math, number theory, probabilities

Game Relics

math, probabilities

Beautiful Mirrors

data structures, dp, math, probabilities

Beautiful Bracket Sequence (hard version)

combinatorics, probabilities

Beautiful Bracket Sequence (easy version)

combinatorics, dp, probabilities

Beautiful Mirrors with queries

data structures, probabilities

Tree Queries

data structures, probabilities, trees

Hyakugoku and Ladders

dp, probabilities, shortest paths

Alice and the Cactus

dfs and similar, graphs, math, probabilities

Marek and Matching (hard version)

brute force, probabilities

Marek and Matching (easy version)

brute force, probabilities

GCD Groups 2

greedy, number theory, probabilities

Crossword Expert

combinatorics, dp, number theory, probabilities, two pointers

Tokitsukaze and Powers

number theory, probabilities

Expected Square Beauty

dp, math, probabilities

Nauuo and Pictures (hard version)

dp, probabilities

Nauuo and Pictures (easy version)

dp, probabilities

Card Bag

dp, math, probabilities

Serval and Bonus Problem

combinatorics, dp, math, probabilities

Sonya and Informatics

combinatorics, dp, matrices, probabilities

Gold Experience

constructive algorithms, graphs, math, number theory, probabilities

Steps to One

dp, math, number theory, probabilities

Arithmetic Progression

binary search, interactive, number theory, probabilities

Makoto and a Blackboard

dp, math, number theory, probabilities

Inversion Expectation

dp, math, probabilities

The Top Scorer

combinatorics, dp, math, probabilities

Mergesort Strikes Back

math, probabilities

Computer Game

dp, greedy, math, probabilities

Lost Root

interactive, probabilities

Interstellar battle

math, probabilities, trees

Vasya and Magic Matrix

dp, math, probabilities

Subway Pursuit

binary search, interactive, probabilities

Intercity Travelling

combinatorics, math, probabilities

A Trance of Nightfall

dp, geometry, matrices, probabilities

Alternating Tree

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

I'm Feeling Lucky!

probabilities

Astronomy

geometry, probabilities

Fafa and Ancient Alphabet

math, probabilities

Game with String

implementation, probabilities, strings

Don't Exceed

math, probabilities

Strongly Connected Tournament

dp, graphs, math, probabilities

Fishes

data structures, graphs, greedy, probabilities, shortest paths

New Year and Arbitrary Arrangement

dp, math, probabilities

Willem, Chtholly and Seniorious

data structures, probabilities

Eyes Closed

data structures, probabilities

Something with XOR Queries

brute force, interactive, probabilities

Third Month Insanity

dp, probabilities, trees

Random Query

data structures, math, probabilities, two pointers

Interactive LowerBound

brute force, interactive, probabilities

Destiny

data structures, probabilities

Journey

dfs and similar, dp, graphs, probabilities, trees

Marmots (hard)

math, probabilities

Barrels and boxes

brute force, combinatorics, math, number theory, probabilities

Jon and Orbs

dp, math, probabilities

Inversions After Shuffle

data structures, probabilities

Gosha is hunting

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

Pokermon League challenge

math, probabilities

Dexterina’s Lab

games, matrices, probabilities