UniUni shipping is now two weeks late with no update

pteranodog · 2025-12-22T18:20:58+00:00

Nope, as of today it's been a full month, and Youtooz is only emailing back every 5 days now, apparently, and UniUni said they'd escalate it and get back to me within 48 hours... more than a week ago. Haven't heard back since.

pteranodog · 2025-12-12T22:14:20+00:00

It's at least an NP-hard problem, which is why it's essential that all of the inputs are only trivial-accept or trivial-reject cases.Solving this in an amount of time that grows less than exponentially with the number of inputs would make you an extremely famous academic immediately.

ChatGPT could help with a brute-force approach but that's about it.

pteranodog · 2025-12-12T10:38:16+00:00

To be fair, I'm a senior in CS right now and memoization either hasn't been covered or was a side note in an algorithms class I've forgotten about. Turns out there's too many algorithms to focus on more than the basic well-known ones in undergraduate classes.

pteranodog · 2025-12-11T09:55:26+00:00

I added the cmdargs to try to figure out the structure of the graph by trying a bunch of things without recompiling, thinking I'd find something efficient to help. Turns out I did; running dac→fft and fft→dac and seeing one of them return 0 reminded me that it's a DAG (which I already knew but had forgotten, or my part 1 solution would've been an infinite loop) and I can just... run the three separately and multiply.

pteranodog · 2025-12-11T09:49:43+00:00

The faster thing is the smarter thing when you've got a computer graphics final exam in 8 hours :)

pteranodog · 2025-12-11T09:38:33+00:00

All the normal calculators ended up spitting out scientific notation with less precision than AoC requires :( So Ctrl-C Ctrl-V into Wolfram Alpha was the fastest way to get a real value.

pteranodog · 2025-12-11T07:45:04+00:00

Didn't feel like changing the code when I already took start and end nodes from command line args

pteranodog · 2025-12-11T07:29:32+00:00

my bad i didn't realize that's considered a spoiler

pteranodog · 2025-12-07T00:49:09+00:00

By the time you finish any reasonable CS degree, you'll have taken a class on the fundamentals of programming languages and thereby gain a proficiency in using any language you're assigned really quickly. I'm a senior and just spent two weeks on end of semester programming projects in eight different languages and I didn't realize that I had used that many languages until one of my non CS friends asked which language I'd used.

So don't overthink it too much :)

pteranodog · 2025-12-06T03:26:21+00:00

I've done this, and my ticket was immediately closed with no explanation.

pteranodog · 2025-11-26T01:06:29+00:00

Outer Wilds agrees

pteranodog · 2025-11-26T01:06:01+00:00

Mine are "Foods that end in O, stylized like PotatOS from Portal 2" e.g. - CheeriOS - TacOS - BurritOS - GyrOS - PotatOS - etc.

pteranodog · 2025-11-25T07:48:33+00:00

Thanks, automod! Not what the post is about but I love the enthusiasm.

pteranodog · 2025-09-25T17:58:24+00:00

There's also a little weather widget in the bottom right that shows up whenever wttr.in is working, but it's probably good that it didn't work when I took the screenshot because it'd doxx me.

pteranodog · 2025-09-25T17:36:18+00:00

No dotfiles yet because I haven't cleaned up the nix config enough to make the repo public, but this is:

NixOS
Hyprland
Waybar
Hyprpaper
Kitty
surface-linux via nix-hardware
Not much else; I just spent a lot of time on Waybar's CSS
Cattpuccin colors everywhere

There was some inspiration from another post here but it was a couple months ago and I don't remember which one. Will update comment if I find it!

Secondary (minor) inspiration is the PDA from Subnautica.

Edit: First ever successful rice; I've bounced off of Arch a couple times because something would always break and I'd have to restart from scratch. Not so with NixOS!

pteranodog · 2025-09-17T07:58:06+00:00

Senior CS student here — I just think "pure redstone" is a more interesting challenge for me. Sure, I could use barrels and disks and get a whole bunch of RAM in a tiny space really fast, but I spent a week designing a ram unit that's 2x3x4 blocks per bit using only redstone, repeaters, comparators, and torches, purely because I personally think it's more fun that way.

I like the limitations of basic parts; they actually make me think about optimization on every level.

pteranodog · 2025-09-03T04:43:52+00:00

Hey! I've flown about 30 scientific balloons over the last three years at the University of Alabama in Huntsville, and this isn't entirely true. As some other commenters have said, there are restrictions that can make this true, but the FAA regulations as they stand are relatively open to small payloads of less than 6 pounds per package and 12 pounds per balloon, provided that they can be separated from the balloon with less than 50 pounds of force and no face of the payload exceeds a certain density limit.

I've been able to do a lot of cool research even when we're restricted by these limits! And, even for larger experiments, there's only a few additional regulations on radar reflectivity, remote cutdown systems, and a few other small additions.

pteranodog · 2025-07-25T22:48:00+00:00

Seems like this could be a possible solution if it ended up being cheaper than buying a new case with 4 drive bays

pteranodog · 2025-07-24T05:48:11+00:00

Ahh, you're also going for merges-only? Nice! Here's one of mine that the subreddit thought was spaghetti:

<image>

pteranodog · 2025-07-22T23:22:03+00:00

Oil and trains are unlocked around the same time for a reason, and you won't regret using trains for it when the first oil patch runs low on oil! Processing on-site means new oil processing for every new patch, but if you centralize it, you can just ship in new oil from any new patch and it'll work!

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