Lille Kat
Social events around problem solving and programming at IT University of Copenhagen
Previous Lille Kats
2020
7 Feb 2020
- Tri
- Soylent
- Awkward Party
- Backpack Buddies
- Expecting Rain
- Fishmongers
- Joint Attack
- Keyboards in Concert
- License to Launch
- Hidden Words
6 Mar 2020
- Erase Securely
- Planting Trees
- Boiling Vegetables
- Dartboard
- Jane Eyre
- Through the Grapevine
- Timebomb
- Virus Replication
27 Mar 2020
- Aaah!
- Quality-Adjusted Life-Year
- Heart Rate
- Thanos
- Planet Destruction
- Closing the Borders
- Avoiding the Apocalypse
24 Apr 2020
- Stuck In A Time Loop
- Fifty Shades of Pink
- What does the fox say?
- Sanic
- Social running
- Convoy
- Finn the Giant
- Hopscotch 50
- Subway Map
4 Sep 2020
- The Last Problem
- Spavanac
- Triple Texting
- Digit Product
- Dodecaphony
- Sticky Situation
- Pyramid Construction
- Fountain
- Variable Names
- Rhyme Power
- Minesweeper Squared
- Travel Planning
18 Sep 2020
- Tower Construction
- Babylonian Numbers
- I’ve Been Everywhere, Man
- Rock, Scissors, Paper
- Pebble Solitaire
- Alternative Anagram
- Pebble Solitaire
- Traveling Monk
- A Mazing!
- Presidential Elections
- Buenos Airlines
2 Oct 2020
- Nasty Hacks
- Jumbled Compass
- Digital display
- Basic Programming 1
- Card Trick
- Esej
- Kayaking Trip
- Forest Fruits
- Ferry Loading
- Elementary Math
30 Oct 2020
- IsItHalloween.com
- Costume Contest
- Friday the 13th
- Incognito
- Candy Division
- Horror List
- Halloween Loot
- Wizard Dance
- Witch Dance
7 Nov 2020
Nordic Collegiate Programming Championships at ITU.
- Array of Discord
- Big Brother
- Coin Stacks
- Dams in Distress
- Exhaustive Experiment
- Film Critics
- Gig Combinatorics
- Hiring and Firing
- Infection Estimation
- Joining Flows
- Keep Calm And Carry Off
- Language Survey
- Methodic Multiplication
13 Nov 2020
- Greetings!
- Buka
- Majstor
- Architecture
- Bracket Sequence
- Crashing Robots
- The Embarrassed Cryptographer
- Mravojed
- Nullary Computer
27 Nov 2020
- Cold-puter Science
- Early Winter
- Curse the Darkness
- Exam
- Santa Klas
- Unique Snowflakes
- Secret Santa
- Secret Santa Cycles
- Catmas Gifts
- 12 February 2021 - Kattis - Facebook
2021
12 Feb 2021
- Greetings!
- Pet
- Right-of-Way
- Shopping List (Easy)
- Shopping List
- Even Up Solitaire
- Reconstructing Tape Art
- Virtual Friends
- Match Game
- Random Digital Exponentiation
- Minecraft Dungeons
- Blacksmith Training
26 Feb 2021
- Roaming Romans
- Falling Mugs
- Ocean’s Anti-11
- Tajna
- Intergalactic Bidding
- The Calculus of Ada
- Reactivity Series
- Getting Gold
- Brexit
- DA-Sort
- Appeal to the Audience
- Russian Dolls
- Ocean’s Anti-11 (Hard)
12 Mar 2021
- Reverse
- Homework
- Ninety-nine
- Birthday Memorization
- Fluortanten
- Saunas
- Paths
- Snowball Fight 2
- Forest Fire
- House Building
26 Mar 2021
- Arrangement
- Graduation
- Keystrokes
- Mars-DNA
- Bridges
- Letter Optimization
- Simple Arithmetic
- Citations
- Liebespolygon
- Wurmprobleme
9 Apr 2021
- Electrical Outlets
- Chanukah Challenge
- Forced Choice
- Stopwatch
- Weak Vertices
- Missing Numbers
- Transit Woes
- Build Dependencies
- Running MoM
- Sheba’s Amoebas
- Lifting Walls
- A Rational Sequence 2
- Teque
- Bumped!
7 May 2021
- Jumbo Javelin
- Laptop Sticker
- FizzBuzz
- Zyxab
- Damaged Equation
- Bootstrapping Number
- Simple Cron Spec
- Investigating Imposters
- Dragon Balls
- Alien Microwave
- Captured by Aliens
10 September 2021
24 September 2021
- Sok
- Guessing Game
- Delicious Bubble Tea
- Calculating Dart Scores
- Button Bashing
- Exact Change
- Breaking Bad
- Can of Worms
- 3-Sided Dice
8 October 2021
Note that the event simply uses the problems from NCPC 2017
- Judging Moose
- Best Relay Team
- Kayaking Trip
- Import Spaghetti
- Galactic Collegiate Programming Contest
- Emptying the Baltic
- Distinctive Character
- Airport Coffee
- Compass Card Sales
- Hubtown
9 October 2021
- Antenna Analysis
- Breaking Bars
- Customs Controls
- Deceptive Directions
- Eavesdropper Evasion
- Fortune From Folly
- Grazed Grains
- Hiring Help
- Intact Intervals
- Joint Jog Jam
- Knot Knowledge
- Locust Locus
- Marvelous Marathon
12 Nov 2021
- Åboulevarden
- Bottle Opening
- Checkout
- John Dillermand
- Equal Shots
- Fitting Cans
- Game of Dice
- Handy Beer
26 Nov 2021
- Digit Swap
- Cinema Crowds
- Cinema Crowds 2
- Arm Coordination
- UTF-8
- Quickscope
- Tic Tac Toe
- Royal Family Tree
- BnPC
- Largest Hoarding
- Tic Tac Toe
- Jail or Joyride
10 Dec 2021
- Odd Echo
- Echo Echo Echo
- License to Launch
- Knitpicking
- Mr. Plow King
- Cocoa Coalition
- Breaking Bars
- Catmas Gifts
- Shovelling Snow
2022
11 Feb 2022
- Sort Two Numbers
- Greetings!
- Eye of Sauron
- Mult!
- The Grand Adventure
- Bridges and Tunnels
- MrCodeFormatGrader
- Tic-Tac State
- Interval Scheduling
- Stamp Combinations
- Pizza Party!
- Sword Counting
25 Feb 2022
- Skru op!
- Cpr-nummer
- Popkorn
- Kapløb
- Prinsessen på ærten
- Bakke snagvendt
- Olympus Måns
- Gule gummistøvler
11 Mar 2022
- Tower Construction
- Nine Knights
- Falling Apart
- Room Painting
- Game of Throwns
- Dominoes 2
- 10 Kinds of People
- Supercomputer
- Safest Taxi
- Bless You Autocorrect!
- Ski Resort
- Prospecting
25 Mar 2022
- Finding An A
- Double Password
- Average Character
- Overdraft
- Scaling Recipe
- Circle Bounce
- Who Goes There?
- Tournament Seeding
- Black and White
- Tetris Generation
- Square Bounce
- Rise and Fall
- Tree Hopping
- Diagonals
- Dorm Room Divide
06 May 2022
- Which is Greater?
- GCVWR
- Saving For Retirement
- Square Peg
- Square Peg in a Round Hole
- Bitmask
- Snakes and Masters
- Associative Exponents
- Juggling Patterns
- Fire
- Diagonals
- Dorm Room Divide
09 Sep 2022
- FYI
- Turn It Up!
- Count the Vowels
- Dice Cup
- Building Pyramids
- Stopwatch
- Jumbled Compass
- Proofs
- Aa
- Closeness Queries
- Bazaar
- Adding Up the Votes
- Evading a Monster
23 Sep 2022
- echoechoecho
- addtwonumbers
- oddecho
- laptopsticker
- babybites
- flipflow
- adolescentarchitecture
- mixtapemanagement
- confinedcatching
- bookshelfbuilding
- gravitygrid
- decorativedominoes
- impressiveintegers
- lexiographiclecturing
- jeopardisedjourney
- exhaustingerrands
- hecticharbour
7 Oct 2022
- twosum
- hissingmicrophone
- timeloop
- stopwatch
- knotknowledge
- haughtycuisine
- jigsaw
- elevatorpitch
- generators
- incompletesort
- bidirectionalcode
- aquarium
- familyfares
- kleptocrat
28 Oct 2022
- isithalloween
- addtwonumbers
- sorttwonumbers
- nsum
- coffeecupcombo
- acearbiter
- discdistrict
- highesthill
- junkjourney
- berrybattle
- graduationguarantee
- enigmaticenumeration
- foreignfootball
- icyitinerary
- keyboardqueries
11 Nov 2022
- alcoholfreealternative
- brainfuck
- champagneoverflow
- drinkmenu
- equalizingdebt
- fillingcrates
- ginfizz
- hairofthedog
- incrediblebartender
2023
10 Feb 2023
- Add Two Numbers
- Sort Two Numbers
- N-sum
- FizzBuzz
- FizzBuzz
- Interview Question
- Delimiter Soup
- Delft Distance
- Bottle Flip
- Circular Caramel Cookie
- Going in Circles
- High-quality Tree
- Last Guess
- Faster Than Light
- ETA
24 Feb 2023
- Add Two Numbers
- N-sum
- Metronome
- Class Field Trip
- Basic Programming 2
- Ghost Leg
- Smallest Calculated Value
- MazeMan
- Platform Placing
- Birthday Gift
- Room Evacuation
10 Mar 2023
- Add Two Numbers
- N-sum
- Metronome
- Blueberry Waffle
- Streets Ahead
- Repetitive Song
- Sun and Moon
- Fading Wind
- Cuckoo Hashing
- Three Dice
- Three Digits
- Chocolate Chip Fabrication
- Bog of Eternal Stench
- Funny Games
24 Mar 2023
- Add Two Numbers
- Sort Two Numbers
- N-sum
- Ghost Leg
- Class Field Trip
- Smallest Calculated Value
- MazeMan
- Restaurant Opening
- Hunt the Wumpus
- I Could Have Won
- Everything Is A Nail
- Champernowne Count
- Mars-DNA
- DNA
- Copying DNA
12 May 2023
- Echo Echo Echo
- Odd Echo
- Add Two Numbers
- Sticky Keys
- International Dates
- Adding Trouble
- Mean Words
- Alien Math
- Mirror Strings
- Card Counting Club
- Precarious Stacks
- Graduation Table
- Lefties vs. Righties
- Maddison’s Square Garden
- Sneaky Exploration
- Shopping Bags
- Central String
08 Sep 2023
- Echo Echo Echo
- Odd Echo
- Sort Two Numbers
- Add Two Numbers
- Reverse
- SMIL
- Messy lists
- Who wins?
- Triolingo Push
- Ice Cream Machines
- Inflation
- Find the Box
- Bikes vs Cars
22 Sep 2023
- Velkomin!
- Leggja saman
- Úllen dúllen doff
- Bannorð
- Pizzubestun
- Gangur
- Almennir Borgarar
- Talnalás
- Teningakast
- Nafnagift
- Hraðskrif
- Frumtölutalning
06 Oct 2023
- Echo Echo Echo
- Hraðgreining
- Amerískur vinnustaður
- Viðsnúningur
- Hvert Skal Mæta?
- Atlögur
- Deildajöfnuður
- Majór Skýrsla
- Töskupökkun
- Hittast
- Kaffiskömmtun
- DNA
24 Nov 2023
- Tölvunarfræðingar telja
- Millifærsla
- Flatbökuveisla
- Attendance
- Guess Who
- Anti-Palindrome
- Don’t Be Fake
- Modified Gray Code
- Gas Station
- A Complex Problem
- Add or Multiply
08 Dec 2023
- Á leið í bíó
- Óvissa
- Kiki Boba
- Prjónamynstur
- Ekki dauði opna inni
- ASCII kassi
- Island Alliances
- A Pivotal Question
- Negative Graph
- Candy
- ChatNOI
- A Tree and Two Edges
2024
09 February 2024
- Echo Echo Echo
- Add Two Numbers
- Sort Two Numbers
- Reduplication
- Lost Lineup
- Graduation
- Message
- Three in a Row
- Cutting Proteins
- Pickle Clicker
- Cristian’s Piano
23 February 2024
- Bitte ein Bit
- Shandy
- Kiki Boba
- Bracket Matching
- Illuminated City
- Map of Sweden
- Join Strings
- Segment Monitoring
- Fake Snowflake
- Trafikverket’s Plan
- Fire Hydrant
15 March 2024
- Tölvunarfræðingar telja
- Flatbökuveisla
- Champernowne Verification
- Tag
- Getting Gold
- Faulty Robot
- Pick up sticks
- A Cappella Recording
- ABC String
- Candy Factory
- Avalanche
5 April 2024
- Keys, Phone, Wallet
- Candy Store
- Pencil Crayons
- Birthday Candles
- Dinner Time
- Triangle Trees
- Rerouting Rapids
- Evacuation
- Ray Chasing
- Lines of X
3 May 2024
- Hipp Hipp
- Stórafmæli
- Besta gjöfin
- Raðgreining 1
- Peningar
- Bergur
- Veggja Kalli
- Gini Stuðull
- Leiðangur
- Terraces
- A Feast For Cats
- Raðgreining 2
- Fibonacci Gjöf
20 September 2024
- Hipp Hipp
- Odd Echo
- Reduplication
- Eye of Sauron
- Farmer’s Field
- Trik
- Falling Snow
- Number Squistem
- Infinite Race
- Coloring Socks
- Map of Sweden
- Walrus Weights
- Bouquet
- Team Coding
27 September 2024
- Leggja saman
- Hipp Hipp Húrra
- Nasty Hacks
- Jamboree
- Die Hard
- Converting Romans
- Heroes of Velmar
- Card Trick
- Karl Coder
- Honeycomb Walk
- Aperiodic Appointments
- Factor-Full Tree
- Electronic Components
- Groups of Strangers
11 October 2024
- Kveðja
- Millifærsla
- Blaðra
- Mumble Rap
- Ferskasta Jarmið
- The Clock
- Superyatzy
- The Last Pizza
- Duck Journey
- Circle Passing
- Whiteboard Space
- Whiteboard
25 October 2024
- Takk fyrir mig
- IsItHalloween.com
- Digit Swap
- Mæting
- Skák
- Call for Problems
- Dishonest Lottery
- Bikes and Barricades
- Light Up
- Gears and Axles
- Rhythm Flow
- Menger Sponge
- Snake
- Colorful Trees
29 November 2024
- Dagatal
- Count the Vowels
- Hair of the Dog
- Gin Fizz
- Drink Menu
- Equalizing Debt
- Filling Crates
- Champagne Overflow
- Brainfuck
- Incredible Bartender
- Alcohol-Free Alternative
7 February 2025
- Leggja saman
- Sort Two Numbers
- Telja
- The Triangle Factory
- Barcelona
- Virus Replication
- Alien Attack 2
- Taking Out the Trash
- Kitten of Chaos
- The Wizard Theodor
- Laundry
- Theodor the Wizard
21 February 2025
- Echo Echo Echo
- Add Two Numbers
- Champernowne Subsequence
- FizzBuzz
- Generalized FizzBuzz
- Threes and Fives
- Intuitive Elements
- Firefly
- Bus Assignment
- Sleeping on the Train
- Big Integers
- Auto-Coin-o-Matic
- Big Factoring
- Danish
7 March 2025
- Reduplication
- Telja
- Count the Vowels
- Leyniþjónusta
- Pokechat
- Ruffians
- Mouse Pursuit
- Numbers On a Tree
- Tic Tac Toe
- Alehouse
- Long Swaps
- Homework Help
- Nested Dolls
- Tic Tac Toe
21 March 2025
- Simon Says
- Is Y a Vowel?
- Aldur
- Fimmtudagstilboð
- Completing the Square
- Memory Match
- Block Game
- Hopscotch
- Rock Band
- Chess Tournament
- Dominos
- Translators’ Dinner
04 April 2025
- Draga Frá
- Decimal deletion
- Baby Bites
- Translation
- Revision Control
- Hanging Out on the Terrace
- Not Amused
- Connectedness
- Block Crusher
- Cuckoo Hashing
- Discoveries
- Up and Down
- Intelligence Infection
- Knight’s Marathon
02 May 2025
- Getting Wood
- Sweet Dreams
- Acquire Hardware
- Taking Inventory
- Benchmaking
- What a Deal!
- Diamonds
- Monster Hunter
- Ice Bucket Challenge
- We Need to Go Deeper
- A Terrible Fortress
- Staying Frosty
- Eye Spy
- Free the End
- Remote Getaway
05 September 2025
- Bitte ein Bit
- Shandy
- Cat in a Box
- Generating Cool Passwords Company
- Labour Laws
- Cut in Line
- Fishmongers
- Happy Hookup
- Karlsruhe Skyline
- Demand for Cycling
- Free Weights
- Engineering Excellence
19 September 2025
- Class Photo
- Pop Count
- Stuck In A Time Loop
- 13 Floors
- Composed Rhythms
- Sum of the Year
- Undo
- Knitting Pattern
- Avoiding the Abyss
- Jungle Game
- Fence Fee
- Hotfix
- Infinite Cash
- Double Deck
24 October 2025
- Add Two Numbers
- Bijele
- Jack-O’-Lantern Juxtaposition
- Flatter Land
- Human Pyramid
- Dialling Digits
- Battle of Nieuwpoort
- Expected Error
- Lawful Limits
- Giganotosaurus Game
- Awkward Auction
- Investment Investigation
- Joppiesaus Jailbreak
- Fractal Area
7 November 2025
- Add Two Numbers
- Vandalism
- Testing LEDs
- Search Wizard
- Sort of Sort
- Island Exploration
- of in the cold food of out hot eat the food
- Tracing (Laser) Pointers
- Nearest Nice Numbers
- Coin Exchange
- Underspecified Ultrametrics
- Generator Dream
- Strange Light Switches
- Separating Enemies
- One Nail / One Hole
14 November 2025
- Reduplication
- Gluttonous George
- Compound Words
- Snowfall
- Melting Snow
- Handheld Fan
- A Little to the Right
- Uniform Variation
- Slippery Floor
- Speedy Slopes
- Alpine Agility
- Four Questions
- Hockey Fans
- Wrapping Snowballs
28 November 2025
- Cold-puter Science
- Early Winter
- Mr. Plow King
- Exam
- Santa Klas
- Unique Snowflakes
- Cocoa Coalition
- Breaking Bars
- Secret Santa Cycles
- Catmas Gifts
- Shovelling Snow
13 February 2026
- Add Two Numbers
- Above Sea Level
- Echo Echo Echo
- Reduplication
- Lost Lineup
- Graduation
- Message
- Three in a Row
- Bracket Matching
- Dungeon Equilibrium
- Expansion Plan 2
- Factory Table
- Jewels Building
- Hyper Smawk Bros
27 February 2026
- Add Two Numbers
- Baby Shark
- Building Pyramids
- Falling Apart
- Delimiter Soup
- Ferry Loading III
- Room Painting
- Battle Bots
- Compressing Commands
- Democratic Naming
- Exam Study Planning
- Funicular Frenzy
- Hidden Art
- Locking Doors
13 March 2026
- Add Two Numbers
- Bijele
- Stuck In A Time Loop
- Finding Forks
- Better Dice
- Just a Joystick
- King’s Keep
- Anti-Tetris
- Idle Terminal
- Sheba’s Amoebas
- Horror List
- Hacky Ordering
- Losing Leaves
27 March 2026
- Ready, Set, Go!
- Spell it Out
- Just a Bit
- Source to Sink
- Periodic Encryption
- Router
- Daily Playlist
- Icarus
- Circular Walk
- Brass Section
- Metro Lines
18 September 2026
[Kattis event] (https://open.kattis.com/contests/upvyet)