Shawn Eddy
@seddy.com
Software Engineer, Data Scientist, and all things Nerd-related - anime, D&D, comics.
I just completed all 12 days of Advent of Code 2025! #AdventOfCode adventofcode.com
Don't spend much time thinking about day 12; try the simplest option first. I did this as a gut check to trim out unnecessary trials; on a chance, I submitted the answer - it was correct.
github.com/ymiseddy/Adv...
Don't spend much time thinking about day 12; try the simplest option first. I did this as a gut check to trim out unnecessary trials; on a chance, I submitted the answer - it was correct.
github.com/ymiseddy/Adv...
Advent of Code 2025
adventofcode.com
December 12, 2025 at 6:25 AM
I just completed all 12 days of Advent of Code 2025! #AdventOfCode adventofcode.com
Don't spend much time thinking about day 12; try the simplest option first. I did this as a gut check to trim out unnecessary trials; on a chance, I submitted the answer - it was correct.
github.com/ymiseddy/Adv...
Don't spend much time thinking about day 12; try the simplest option first. I did this as a gut check to trim out unnecessary trials; on a chance, I submitted the answer - it was correct.
github.com/ymiseddy/Adv...
I've completed "Reactor" - Day 11 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/11
First directed graph. I was overthinking it and got some outrageous answers for Part 2.
github.com/ymiseddy/Adv...
First directed graph. I was overthinking it and got some outrageous answers for Part 2.
github.com/ymiseddy/Adv...
Day 11 - Advent of Code 2025
adventofcode.com
December 11, 2025 at 6:20 AM
I've completed "Reactor" - Day 11 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/11
First directed graph. I was overthinking it and got some outrageous answers for Part 2.
github.com/ymiseddy/Adv...
First directed graph. I was overthinking it and got some outrageous answers for Part 2.
github.com/ymiseddy/Adv...
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
Part 1 - tried Dijkstra's, but was too lazy to implement a cost function, so it degraded to BFS.
Part 2 - was crazy - tried A*, linalg solver, ended up with linprog FTW.
github.com/ymiseddy/Adv...
Part 1 - tried Dijkstra's, but was too lazy to implement a cost function, so it degraded to BFS.
Part 2 - was crazy - tried A*, linalg solver, ended up with linprog FTW.
github.com/ymiseddy/Adv...
Day 10 - Advent of Code 2025
adventofcode.com
December 10, 2025 at 8:22 AM
I just completed "Factory" - Day 10 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/10
Part 1 - tried Dijkstra's, but was too lazy to implement a cost function, so it degraded to BFS.
Part 2 - was crazy - tried A*, linalg solver, ended up with linprog FTW.
github.com/ymiseddy/Adv...
Part 1 - tried Dijkstra's, but was too lazy to implement a cost function, so it degraded to BFS.
Part 2 - was crazy - tried A*, linalg solver, ended up with linprog FTW.
github.com/ymiseddy/Adv...
I've completed "Movie Theater" - Day 9 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/9
It took a bit to find a reasonably efficient algorithm for part 2. I'm still not convinced it is the best.
github.com/ymiseddy/Adv...
It took a bit to find a reasonably efficient algorithm for part 2. I'm still not convinced it is the best.
github.com/ymiseddy/Adv...
Day 9 - Advent of Code 2025
adventofcode.com
December 9, 2025 at 8:02 AM
I've completed "Movie Theater" - Day 9 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/9
It took a bit to find a reasonably efficient algorithm for part 2. I'm still not convinced it is the best.
github.com/ymiseddy/Adv...
It took a bit to find a reasonably efficient algorithm for part 2. I'm still not convinced it is the best.
github.com/ymiseddy/Adv...
I've completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
This is my favorite so far!
Messy code - I may do some cleanup later.
Solution is here:
github.com/ymiseddy/Adv...
This is my favorite so far!
Messy code - I may do some cleanup later.
Solution is here:
github.com/ymiseddy/Adv...
Day 8 - Advent of Code 2025
adventofcode.com
December 8, 2025 at 6:23 AM
I've completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
This is my favorite so far!
Messy code - I may do some cleanup later.
Solution is here:
github.com/ymiseddy/Adv...
This is my favorite so far!
Messy code - I may do some cleanup later.
Solution is here:
github.com/ymiseddy/Adv...
I just completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/7
Solution is here:
github.com/ymiseddy/Adv...
Part 2 - first attempt grew exponentially, so I had to find a better way.
Solution is here:
github.com/ymiseddy/Adv...
Part 2 - first attempt grew exponentially, so I had to find a better way.
Day 7 - Advent of Code 2025
adventofcode.com
December 7, 2025 at 5:54 AM
I just completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/7
Solution is here:
github.com/ymiseddy/Adv...
Part 2 - first attempt grew exponentially, so I had to find a better way.
Solution is here:
github.com/ymiseddy/Adv...
Part 2 - first attempt grew exponentially, so I had to find a better way.
I just completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/6
I spent too much time trying for a pure-math solution to part 2 before realizing that the padding made that impossible.
github.com/ymiseddy/Adv...
I spent too much time trying for a pure-math solution to part 2 before realizing that the padding made that impossible.
github.com/ymiseddy/Adv...
Day 6 - Advent of Code 2025
adventofcode.com
December 6, 2025 at 6:58 AM
I just completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/6
I spent too much time trying for a pure-math solution to part 2 before realizing that the padding made that impossible.
github.com/ymiseddy/Adv...
I spent too much time trying for a pure-math solution to part 2 before realizing that the padding made that impossible.
github.com/ymiseddy/Adv...
I've completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
Be careful with those overlaps!
Here's my solution:
github.com/ymiseddy/Adv...
Be careful with those overlaps!
Here's my solution:
github.com/ymiseddy/Adv...
Day 5 - Advent of Code 2025
adventofcode.com
December 5, 2025 at 5:39 AM
I've completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
Be careful with those overlaps!
Here's my solution:
github.com/ymiseddy/Adv...
Be careful with those overlaps!
Here's my solution:
github.com/ymiseddy/Adv...
I just completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/4
The Part 1 solution is easy to reuse for Part 2 - I was even building a new map so I could display it for debugging.
Solution code is here:
github.com/ymiseddy/Adv...
The Part 1 solution is easy to reuse for Part 2 - I was even building a new map so I could display it for debugging.
Solution code is here:
github.com/ymiseddy/Adv...
Day 4 - Advent of Code 2025
adventofcode.com
December 4, 2025 at 5:34 AM
I just completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/4
The Part 1 solution is easy to reuse for Part 2 - I was even building a new map so I could display it for debugging.
Solution code is here:
github.com/ymiseddy/Adv...
The Part 1 solution is easy to reuse for Part 2 - I was even building a new map so I could display it for debugging.
Solution code is here:
github.com/ymiseddy/Adv...
I just completed "Lobby" - Day 3 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/3
I went with the direct solution for both parts.
github.com/ymiseddy/Adv...
I went with the direct solution for both parts.
github.com/ymiseddy/Adv...
Day 3 - Advent of Code 2025
adventofcode.com
December 3, 2025 at 5:45 AM
I just completed "Lobby" - Day 3 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/3
I went with the direct solution for both parts.
github.com/ymiseddy/Adv...
I went with the direct solution for both parts.
github.com/ymiseddy/Adv...
I just completed "Gift Shop" - Day 2 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/2
I just went with the messy, obvious solution for both - I'm certain there were some optimizations to be had:
github.com/ymiseddy/Adv...
I just went with the messy, obvious solution for both - I'm certain there were some optimizations to be had:
github.com/ymiseddy/Adv...
Day 2 - Advent of Code 2025
adventofcode.com
December 2, 2025 at 5:49 AM
I just completed "Gift Shop" - Day 2 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/2
I just went with the messy, obvious solution for both - I'm certain there were some optimizations to be had:
github.com/ymiseddy/Adv...
I just went with the messy, obvious solution for both - I'm certain there were some optimizations to be had:
github.com/ymiseddy/Adv...
I just completed "Secret Entrance" - Day 1 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/1
This year, I'm doing solutions in Python. Here is a link to today's solution on GitHub:
github.com/ymiseddy/Adv...
This year, I'm doing solutions in Python. Here is a link to today's solution on GitHub:
github.com/ymiseddy/Adv...
Day 1 - Advent of Code 2025
adventofcode.com
December 1, 2025 at 6:31 AM
I just completed "Secret Entrance" - Day 1 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/1
This year, I'm doing solutions in Python. Here is a link to today's solution on GitHub:
github.com/ymiseddy/Adv...
This year, I'm doing solutions in Python. Here is a link to today's solution on GitHub:
github.com/ymiseddy/Adv...
If you go many years with a hammer as your only tool, you get really good at pounding things.
March 27, 2025 at 5:57 PM
If you go many years with a hammer as your only tool, you get really good at pounding things.
I'm impressed with the responses I get from my local Deepseek instance. It is reasonably performant and gives excellent responses. I also like reading through the thinking sections to see how it reasons about its response.
January 27, 2025 at 7:31 PM
I'm impressed with the responses I get from my local Deepseek instance. It is reasonably performant and gives excellent responses. I also like reading through the thinking sections to see how it reasons about its response.
I just completed all 25 days of Advent of Code 2024! #AdventOfCode adventofcode.com
I have to say, the past 25 days were adventurous! Long time SWE, first time doing AoC. I am currently going through the Easter Eggs in the earlier problems.
github.com/ymiseddy/Adv...
I have to say, the past 25 days were adventurous! Long time SWE, first time doing AoC. I am currently going through the Easter Eggs in the earlier problems.
github.com/ymiseddy/Adv...
Advent of Code 2024
adventofcode.com
December 25, 2024 at 6:09 AM
I just completed all 25 days of Advent of Code 2024! #AdventOfCode adventofcode.com
I have to say, the past 25 days were adventurous! Long time SWE, first time doing AoC. I am currently going through the Easter Eggs in the earlier problems.
github.com/ymiseddy/Adv...
I have to say, the past 25 days were adventurous! Long time SWE, first time doing AoC. I am currently going through the Easter Eggs in the earlier problems.
github.com/ymiseddy/Adv...
I just completed "Crossed Wires" - Day 24 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/24
This one was a complete pain; I haven't worked with binary adders in decades.
I resorted to flat rule checking on this, and surprisingly, it worked.
github.com/ymiseddy/Adv...
This one was a complete pain; I haven't worked with binary adders in decades.
I resorted to flat rule checking on this, and surprisingly, it worked.
github.com/ymiseddy/Adv...
Day 24 - Advent of Code 2024
adventofcode.com
December 24, 2024 at 10:13 AM
I just completed "Crossed Wires" - Day 24 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/24
This one was a complete pain; I haven't worked with binary adders in decades.
I resorted to flat rule checking on this, and surprisingly, it worked.
github.com/ymiseddy/Adv...
This one was a complete pain; I haven't worked with binary adders in decades.
I resorted to flat rule checking on this, and surprisingly, it worked.
github.com/ymiseddy/Adv...
I just completed "LAN Party" - Day 23 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/23
Part two took abnormally long because I got burned by one of Go's footguns in how it handles slices.
github.com/ymiseddy/Adv...
Part two took abnormally long because I got burned by one of Go's footguns in how it handles slices.
github.com/ymiseddy/Adv...
Day 23 - Advent of Code 2024
adventofcode.com
December 23, 2024 at 7:50 AM
I just completed "LAN Party" - Day 23 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/23
Part two took abnormally long because I got burned by one of Go's footguns in how it handles slices.
github.com/ymiseddy/Adv...
Part two took abnormally long because I got burned by one of Go's footguns in how it handles slices.
github.com/ymiseddy/Adv...
I just completed "Monkey Market" - Day 22 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/22
Ok, I stayed up for this one. The hardest part was parsing what the heck these monkeys were doing. 🐒🍌🍌🍌🍌🐒
Ok, I stayed up for this one. The hardest part was parsing what the heck these monkeys were doing. 🐒🍌🍌🍌🍌🐒
Day 22 - Advent of Code 2024
adventofcode.com
December 22, 2024 at 6:10 AM
I just completed "Monkey Market" - Day 22 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/22
Ok, I stayed up for this one. The hardest part was parsing what the heck these monkeys were doing. 🐒🍌🍌🍌🍌🐒
Ok, I stayed up for this one. The hardest part was parsing what the heck these monkeys were doing. 🐒🍌🍌🍌🍌🐒
I just completed "Keypad Conundrum" - Day 21 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/21
I've decided not to stay up late to try to solve these. I'm glad I didn't for this one; it took me quite some time.
I've decided not to stay up late to try to solve these. I'm glad I didn't for this one; it took me quite some time.
Day 21 - Advent of Code 2024
adventofcode.com
December 22, 2024 at 12:27 AM
I just completed "Keypad Conundrum" - Day 21 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/21
I've decided not to stay up late to try to solve these. I'm glad I didn't for this one; it took me quite some time.
I've decided not to stay up late to try to solve these. I'm glad I didn't for this one; it took me quite some time.
I just completed "Race Condition" - Day 20 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/20
I tried a few dumb ways before stumbling on a reasonable way to find cheats. BFS is overkill for finding the initial path since it doesn't branch.
github.com/ymiseddy/Adv...
I tried a few dumb ways before stumbling on a reasonable way to find cheats. BFS is overkill for finding the initial path since it doesn't branch.
github.com/ymiseddy/Adv...
Day 20 - Advent of Code 2024
adventofcode.com
December 20, 2024 at 7:30 AM
I just completed "Race Condition" - Day 20 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/20
I tried a few dumb ways before stumbling on a reasonable way to find cheats. BFS is overkill for finding the initial path since it doesn't branch.
github.com/ymiseddy/Adv...
I tried a few dumb ways before stumbling on a reasonable way to find cheats. BFS is overkill for finding the initial path since it doesn't branch.
github.com/ymiseddy/Adv...
I just completed "Linen Layout" - Day 19 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/19
I would have finished this one faster if I hadn't written bugs early on.
github.com/ymiseddy/Adv...
I would have finished this one faster if I hadn't written bugs early on.
github.com/ymiseddy/Adv...
Day 19 - Advent of Code 2024
adventofcode.com
December 19, 2024 at 5:43 AM
I just completed "Linen Layout" - Day 19 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/19
I would have finished this one faster if I hadn't written bugs early on.
github.com/ymiseddy/Adv...
I would have finished this one faster if I hadn't written bugs early on.
github.com/ymiseddy/Adv...
I just completed "RAM Run" - Day 18 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/18
Today, I made it hard for myself, thinking I had to compute the path while the rocks were falling on part 1. After I figured out that mistake, it was straightforward.
github.com/ymiseddy/Adv...
Today, I made it hard for myself, thinking I had to compute the path while the rocks were falling on part 1. After I figured out that mistake, it was straightforward.
github.com/ymiseddy/Adv...
Day 18 - Advent of Code 2024
adventofcode.com
December 18, 2024 at 7:52 AM
I just completed "RAM Run" - Day 18 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/18
Today, I made it hard for myself, thinking I had to compute the path while the rocks were falling on part 1. After I figured out that mistake, it was straightforward.
github.com/ymiseddy/Adv...
Today, I made it hard for myself, thinking I had to compute the path while the rocks were falling on part 1. After I figured out that mistake, it was straightforward.
github.com/ymiseddy/Adv...
I just completed "Chronospatial Computer" - Day 17 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/17
Both parts were interesting - implementing a small assembly language and figuring out how to generate a specific output. I'm surprised my solution worked!
github.com/ymiseddy/Adv...
Both parts were interesting - implementing a small assembly language and figuring out how to generate a specific output. I'm surprised my solution worked!
github.com/ymiseddy/Adv...
Day 17 - Advent of Code 2024
adventofcode.com
December 17, 2024 at 8:48 AM
I just completed "Chronospatial Computer" - Day 17 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/17
Both parts were interesting - implementing a small assembly language and figuring out how to generate a specific output. I'm surprised my solution worked!
github.com/ymiseddy/Adv...
Both parts were interesting - implementing a small assembly language and figuring out how to generate a specific output. I'm surprised my solution worked!
github.com/ymiseddy/Adv...
I just completed "Reindeer Maze" - Day 16 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/16
Finding Go's heap structure and building a priority queue to implement part 1 took me forever.
Finding Go's heap structure and building a priority queue to implement part 1 took me forever.
Day 16 - Advent of Code 2024
adventofcode.com
December 16, 2024 at 12:54 PM
I just completed "Reindeer Maze" - Day 16 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/16
Finding Go's heap structure and building a priority queue to implement part 1 took me forever.
Finding Go's heap structure and building a priority queue to implement part 1 took me forever.
I just completed "Warehouse Woes" - Day 15 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/15
I got both of these on the first try tonight. Both parts were straightforward, with no particular tricks involved.
I got both of these on the first try tonight. Both parts were straightforward, with no particular tricks involved.
Day 15 - Advent of Code 2024
adventofcode.com
December 15, 2024 at 6:10 AM
I just completed "Warehouse Woes" - Day 15 - Advent of Code 2024 #AdventOfCode adventofcode.com/2024/day/15
I got both of these on the first try tonight. Both parts were straightforward, with no particular tricks involved.
I got both of these on the first try tonight. Both parts were straightforward, with no particular tricks involved.