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OpenKattis

My solutions to the problems on https://open.kattis.com/.

Please do not steal any of the solutions, for reference use only.

© Rick van Rheenen

Summary

Problems solved: 266 - [Total: 616.0, Average: 2.31]

Solved in Python: 168 (63.16%) - [Total: 352.4, Average: 2.10]
Solved in Java: 74 (27.82%) - [Total: 210.0, Average: 2.84]
Solved in Javascript: 9 (3.38%) - [Total: 14.8, Average: 1.64]
Solved in C: 8 (3.01%) - [Total: 24.8, Average: 3.10]
Solved in C++: 4 (1.50%) - [Total: 9.0, Average: 2.25]
Solved in Rust: 3 (1.13%) - [Total: 4.0, Average: 1.33]

Top 3 highest difficulty solved

Problem Language Difficulty
Binary search tree Java 7.2
High Score Python 6.4
Longest Increasing Subsequence Java 6.1

Problems

Solved Problems:

Problem Language Difficulty
10 Kinds of People Java 5.0
2048 Java 2.6
3D Printed Statues Python 2.3
4 thought Python 3.0
A Classy Problem Python 3.9
A Different Problem Python 2.8
A List Game C 3.0
A New Alphabet Java 1.6
A Rational Sequence 2 Python 1.5
A Real Challenge Python 1.5
A Towering Problem Python 2.1
A Vicious Pikeman (Easy) C 3.0
ABC Python 2.1
ACM Contest Scoring Java 1.6
ASCII Figure Rotation Python 3.5
Aaah! Python 1.8
Above Average Python 2.3
Add Two Numbers Rust 1.3
Adding Words Python 3.6
Air Conditioned Minions Java 3.7
Akcija Python 2.1
All Pairs Shortest Path Java 5.6
Alphabet Spam Python 1.4
Amalgamated Artichokes Java 2.5
Amsterdam Distance Java 2.6
An Industrial Spy Java 2.9
Anagram Counting Python 3.2
Another Brick in the Wall Java 2.0
Another Candies Python 2.9
Apaxiaaaaaaaaaaaans! Python 1.4
Army Strength (Easy) Python 2.2
Army Strength (Hard) Python 2.2
Automatic Trading C 5.6
Autori Python 1.3
Babelfish Java 2.5
Backspace Java 2.5
Bacon, Eggs, and Spam Python 1.8
Batter Up Python 1.3
Battle Simulation Java 2.8
Beat the Spread! Python 2.5
Beehives Java 2.2
Bela Python 1.3
Best Compression Ever Python 2.3
Big Truck Java 2.9
Bijele Python 1.4
Binary search tree Java 7.2
Birds on a Wire Java 2.9
Bit by Bit Python 2.9
Black Friday Python 2.0
Booking a Room Java 1.8
Boss Battle Python 1.7
Bottled-Up Feelings Python 2.4
Bounding Robots Java 1.6
Brexit Java 3.2
Bus Numbers Python 2.4
CD Java 5.1
Careful Ascent Java 2.0
Catalan Numbers Java 4.0
Ceiling Function Python 2.1
Cetiri Python 1.7
Cetvrta Python 1.4
Chanukah Challenge Rust 1.3
Charles in Charge Java 5.3
Coast Length Python 3.6
Cold-puter Science Python 1.3
Completing the Square Java 1.9
Compound Words Python 1.7
Costume Contest Javascript 1.9
Counting Stars Python 3.1
Crne Python 2.5
Cryptographer's Conundrum Python 1.4
Curse the Darkness Java 2.4
DVDs Python 3.1
Datum Java 1.4
Detailed Differences Python 1.4
Detour Java 4.7
Dice Cup Java 1.3
Dice Game Python 1.7
Disastrous Doubling Python 4.0
Dominoes 2 Java 3.5
Eight Queens Java 2.9
Eligibility Python 1.5
Encoded Message Python 1.4
Engineering English Python 2.2
Erase Securely Java 1.8
Esej C++ 3.1
Estimating the Area of a Circle Java 1.5
Exam Redistribution Java 2.1
Faktor Python 1.3
Falling Apart Java 1.8
Filip Python 1.4
FizzBuzz Python 1.4
Flexible Spaces Python 1.8
Flip Five Python 3.2
Flow Shop Python 2.2
Flying Safely Python 1.7
Forests Python 3.2
Friday the 13th Python 2.0
Game Rank Python 3.6
Get Shorty Java 3.8
Getting Gold Java 2.2
Goblin Garden Guards C 6.0
Grass Seed Inc. Java 1.3
Growling Gears Python 2.0
Guess the Number Java 3.4
Hangman Javascript 1.5
Harshad Numbers Javascript 1.6
Hay Points Python 2.0
Heart Rate Python 1.4
Heir's Dilemma Javascript 1.6
Hello World! Python 1.2
Herman Java 1.6
Hidden Password Python 2.2
High Score Python 6.4
Hissing Microphone Python 1.4
Horror Film Night Python 3.4
How Many Digits? Python 3.5
I Hate The Number Nine Java 3.1
I've Been Everywhere, Man Python 1.4
ICPC Tutorial Python 3.3
Identifying Map Tiles Python 1.6
Image Decoding Python 3.4
Intelligence Infection Java 5.4
Irrational Division Python 4.5
IsItHalloween.com Python 1.4
Jackpot Python 3.3
Janitor Troubles Javascript 1.4
Job Expenses Javascript 1.4
Judging Moose Python 1.5
Judging Troubles Python 3.0
Jumbled Compass Python 2.0
Jury Jeopardy Java 2.3
Just a Minute Python 1.7
Karte Python 1.6
Kemija Python 1.6
Kindergarten Excursion Java 3.7
King of the Waves Java 5.1
Kornislav Python 1.4
Ladder Python 1.4
Last Factorial Digit Python 1.4
Left Beehind Python 1.6
Line Them Up Python 1.7
Longest Increasing Subsequence Java 6.1
Marko Python 1.9
Mars Window Python 2.2
Matrix Inverse Python 2.9
Memory Match Java 3.9
Metaprogramming Javascript 2.1
Mia Python 1.9
Mirror Images C++ 1.6
Missing Gnomes Python 3.4
Mixed Fractions Python 1.7
Mjehuric Python 1.7
Modulo C 1.5
Nasty Hacks Python 1.4
Natrij Python 2.5
Nizovi Python 3.4
No Duplicates Python 1.5
Not Amused Python 2.3
Number Fun Python 1.5
Odd Gnome Python 1.7
Odd Man Out Python 1.7
Oddities Python 1.4
Oktalni Java 1.9
Okviri Python 2.0
Older Brother Java 3.1
One Chicken Per Person! Python 1.9
Paradox With Averages Python 2.7
Paradox With Averages (Hard) Java 2.6
Parking C 2.2
Patuljci Python 1.8
Paul Eigon Java 1.8
Peragrams Python 1.8
Periodic Strings Python 2.7
Perket Python 2.3
Permutation Encryption Python 2.4
Pervasive Heart Monitor Python 1.8
Pet Java 1.4
Phone List Java 4.0
Pivot Python 2.8
Pizza Crust Python 1.7
Planina Python 1.5
Planting Trees Python 1.7
Popular Vote Python 2.1
Pot Python 1.3
Primary Register C 2.0
Prime Path Python 2.3
Prime Sieve Java 4.2
Pripreme Java 2.6
Prozor Java 1.7
Ptice Python 1.6
Putovanje C++ 2.5
Quadrant Selection Python 1.5
Quality-Adjusted Life-Year Python 1.4
Quick Brown Fox Python 1.8
Quick Estimates Python 1.5
Quite a Problem Python 2.2
R2 Python 1.4
Ragged Right Python 1.8
Rational Arithmetic Python 3.4
Repeating Decimal Java 3.5
Reverse Rot Python 1.7
Reversed Binary Numbers Java 1.4
Rečenice Python 3.0
Rhyming Slang Python 2.6
Riječi Python 1.7
Roaming Romans Javascript 1.6
Rock-Paper-Scissors Tournament Java 4.2
Santa Klas Python 2.6
Saving For Retirement Java 1.9
Secret Chamber at Mount Rushmore Python 2.4
Secret Message C++ 1.8
Secure Doors Python 1.6
Semafori Python 1.9
Server Python 1.8
Seven Wonders Python 1.4
Shopaholic Python 2.4
Sibice Python 1.4
Simon Says Java 2.7
Simon Says Java 1.5
Simple Addition Python 1.9
Single source shortest path, non-negative weights Java 4.0
Skener Python 1.6
Snapper Chain (Easy) Java 2.6
Snapper Chain (Hard) Java 2.4
Soda Slurper Javascript 1.7
Sok Python 1.8
Solving for Carrots Java 1.4
Sort of Sorting Python 2.1
Soylent Python 1.7
Spavanac Python 1.4
Speed Limit C 1.5
Stacking Cups Python 1.6
Stand on Zanzibar Python 1.4
Statistics Python 2.0
Sticky Situation Java 2.6
Stopwatch Rust 1.4
Stuck In A Time Loop Python 1.4
Sum Kind of Problem Python 1.5
Sum of the Others Python 2.2
Symmetric Order Python 1.6
Tajna Python 2.1
Take Two Stones Python 1.4
Tarifa Python 1.4
The Amazing Human Cannonball Java 1.5
The Dragon of Loowater Python 3.1
The Easiest Problem Is This One Python 1.6
Toilet Seat Python 2.2
Train Passengers Python 2.2
Travelling Salesperson 2D Java 1.5 - 9.6
Treasure Hunt Java 2.6
Tri Python 1.7
Trik Python 1.4
Troll Hunt Java 2.4
Un-bear-able Zoo Python 1.9
Variable Arithmetic Python 2.5
Vauvau Java 1.9
Veci Python 1.8
Volim Python 1.6
WERTYU Python 3.3
What does the fox say? Python 2.2
Where's My Internet?? Java 3.4
Which Base is it Anyway? Python 2.5
Words for Numbers Python 2.6
Yoda Java 1.9
Zamka Python 1.4

Unsolved Problems:

Problem Language Difficulty
Skocimis Python 1.6
Fun House Javascript 1.9
Logo Java 2.7
Kastenlauf Java 3.6
Phone List Python 4.0
Rock, Scissors, Paper Python 4.2
Virtual Friends Java 4.2
Minimum Spanning Tree Java 4.4
Cookie Selection Java 4.6
Dominos Java 4.7
Single source shortest path, negative weights Java 4.8
Fibonacci Words Python 5.1
Maximum Flow Java 5.6
The Magical 3 C++ 5.7
Interval Cover C++ 5.8
Almost Union-Find Java 5.9
Airline Hub Python 6.9
Cat And Mouse Java 7.6
Oop Java 8.9
A Different List Game Python 9.3

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