The Nineteenth Byte

ASCII-only

12:02 AM

._.

Lyxal

12:31 AM

@RedwolfPrograms I gotta go for now

Feel free to finish if you want

Redwolf Programs

@Lyxal I gotta get dinner. We can finish killing it tomorrow, or maybe later tonight/today.

Lyxal

Okay sounds good

My bed strat failed

Redwolf Programs

My pillar strat failed :p

Anyway see y'all in a few hours

Lyxal

Same

Lyxal

1:19 AM

@HyperNeutrino I think it should be unfrozen

HyperNeutrino

@Lyxal okay i've unfrozen it

i think so too cuz ideally we don't talk about gaming in TNB itself

Lyxal

@HyperNeutrino :pogchamp:

Razetime

2:49 AM

morning

Redwolf Programs

3:06 AM

The joys of back end development...my reverse proxy is adding leading forward slashes to all the paths, and that's costed me three days of debugging

Fixed! The usefulness of stack overflow is almost enough to offset my disappointment toward whoever decided the slashes in URLs should be so confusingly handled

Razetime

3:22 AM

@RedwolfPrograms i wonder what the creator of /// was thinking when they made it

Bubbler

4:39 AM

I'm out of the AoC league today

ASCII-only

o crap I'm not at home

pppery

10 minutes

Redwolf Programs

Almost would be about to miss AoC

pppery

7

Rahul Verma

@Bubbler why so?

It's not hard for u guys, I think

Redwolf Programs

4:55 AM

5

Rahul Verma

5

HyperNeutrino

time to get memed again

pppery

memed?

HyperNeutrino

like i just mean time to mess up as a result of hard problem set

Redwolf Programs

3

Rahul Verma

4:57 AM

3

HyperNeutrino

i spent way too long on p2 yesterday lol

Redwolf Programs

You didn't get 1900th place :p

HyperNeutrino

got my sightline logic wrong and then stored my values in the wrong format except neither of them caused an error it was just wrong answer

Redwolf Programs

2

Rahul Verma

1.5

Lyxal

4:58 AM

im here dw

1

1

½

0.5

0.25

4:59 AM

0.1

Unrelated String

...it's degrees

Redwolf Programs

Messed up on p1 :/

HyperNeutrino

284/31

wow

i can't believe i spent so long on that stupid bug

Lyxal

frick part 2

HyperNeutrino

i'm so dumb

Unrelated String

5:08 AM

I fucked so much up

still on part 1 waiting to submit lmao

HyperNeutrino

oof

friendly reminder that -1 ** 2 is equal to -1 (in python at least)

cost me like at least 2 mins

Unrelated String

it took me waaaaaaay too long to read the part 2 sepc right lmao

Day       Time  Rank  Score       Time  Rank  Score
 12   00:09:07   641      0   00:15:21   317      0

pppery

1037/430

I would have done better on part 1 except I made a one-character typo which took me a while to debug

@HyperNeutrino It parses that as -(1**2)

HyperNeutrino

i forgot that negative number literals don't exist :/

4

so i spent soo long on that

Unrelated String

I was just kind of slow on part 1 aside from not realizing the turns are in degrees and not number of right angles

HyperNeutrino

5:18 AM

at least my p2 rank was like, reasonable

Redwolf Programs

I forgot the freaking starting offset

HyperNeutrino

ah

pppery

I understood part 1 perfectly, but suck at implementing left and right turns in code.

Redwolf Programs

Day       Time  Rank  Score       Time  Rank  Score
 12   00:09:30   718      0   00:18:42   580      0

Unrelated String

@pppery complex numbers

Redwolf Programs

5:19 AM

Complex numbers? I just did [-w[1], w[0]]

pppery

clever

HyperNeutrino

always use complex on coordinate problems like this

it makes it so much easier

Redwolf Programs

Not in JS :p

HyperNeutrino

left turn is just * 1j, right turn is * -1j

oh...

F

Unrelated String

and then you can jsut add the orientation to the position

which translated incredibly well to part 2's waypoint thing

i could have hit top 100 if i had actually read the spec lmao

HyperNeutrino

5:21 AM

yeah

pppery

Something has gone horribly wrong in our story, because Day 13 is above Day 12

Redwolf Programs

Happened to me a few days ago

HyperNeutrino

changing part 1 to 2 was super easy based on the way I implemented it so that was nice

Redwolf Programs

@pppery See my theory above

HyperNeutrino

uhhhhh lol?

Unrelated String

5:21 AM

the ferry's navigation is really fucked i guess

pppery

I also note that my part 2 answer was over 10,000 units north

Redwolf Programs

There are exactly enough gaps in the ASCII art for us to double back and return to the north pole, then to the equator. We run back to get something.

HyperNeutrino

my part two answer was like 150k lol

Redwolf Programs

A few days ago I had all the exact builtins I needed to get top ten or so, and then I made a mistake and got three minutes of delays

Wait nobody star anything, the starboard matches the default OEIS search

HyperNeutrino

lol nice xD

Lyxal

5:25 AM

what does it mean when i turn left?

what happens to the waypoints cords?

HyperNeutrino

it rotates around the ship so if it's [x, y] then it becomes [-y, x]

or just multiply by i

Redwolf Programs

How do you type so fast

pppery

@UnrelatedString No, I think it had to return to the airport to escape the storm.

Redwolf Programs

Proof I knew this would happen:

8 hours ago, by Redwolf Programs

Oh, I just realized there are 13 blank spaces total in between the existing AOC challenges...I bet they'll end up out of order as we make our way back to the north pole

HyperNeutrino

nice

@RedwolfPrograms idk if you're asking me but i type fast mostly cuz i started writing essays for school stuff pretty early and also procrastination so i need to be fast lmao, and my overall typing speed is pretty alright lol

Lyxal

5:31 AM

of course today had to be directions. my one weakness

ASCII-only

dude

Redwolf Programs

Anyone else get east and west mixed up, though?

ASCII-only

did today on phone

no

i choked hard on part 2 tho

brainfart for like 10 mins...

pppery

@RedwolfPrograms Why would that cause a problem?

All that the question asks for is the absolute value.

ASCII-only

^ it doesnt matter

Redwolf Programs

5:33 AM

Unless you get them swapped halfway through

ASCII-only

i used Cartesian so north is +ve, using screen coords its the opposite

HyperNeutrino

well it might screw up your rotation if you use complex

if you keep it consistent it's probably fine

ASCII-only

how i got < 2k with snail typing i will never know

snail typing and bad choke

Redwolf Programs

A lot of people seem to have dropped out after the last few days

13% or so per day

pppery

In 2019, 97% of all people who started failed to save Santa.

Lyxal

5:37 AM

i forgot it could rotate multiple times

Redwolf Programs

Me too

I just gave up and used a for loop

pppery

Me too, except it wasn't giving up and I planned to use a for loop from the start

Lyxal

hang on why did they link to what a PA system is

it's extremely irrelevant to solving the challenge

Redwolf Programs

I wondered that

I almost clicked on "manhattan distance" instead of the input

Lyxal

also why didnt they add a test case where the waypoint rotates left?

because the left rotation is whats screwing up my program

Redwolf Programs

5:39 AM

What are you using?

Lyxal

            times = direction[1] // 90
            for n in range(times):
                  t = way_row
                  way_row = -way_col
                  way_col = t

way_row is the x of the waypoint and way_col is the y of the waypoint

Redwolf Programs

It should be [y, -x] for left I think

Lyxal

okay now im confused

HN said [-y, x] but you're saying [y, -x]

who's right?

Redwolf Programs

The left one

The right one is for left

This is making it worse.

[-y, x] rotates right

[y, -x] rotates left

Lyxal

i asked "what does it mean to turn left" and HN said "[-y, x]"

Redwolf Programs

5:42 AM

Oh, never mind

Lyxal

but now you beg to differ

i already said im trash with directions

Redwolf Programs

If you know right works, you can just cheat by rotating right by 360 - n degrees

Lyxal

As if 5 mins waiting time wasn't long enough, they make you wait 10 mins if you screw up too much

Redwolf Programs

Would it be cheating to test your input and then you ask me if it's correct? Ten minutes is pretty harsh.

Lyxal

gist.github.com/Lyxal/61c98c32d019f5420fff18309631a5fd

there's the input

@RedwolfPrograms did you test it?

Redwolf Programs

5:53 AM

Uh...apparently it breaks Javascript.

Everything is just returning undefined

Lyxal

oh

uh

Redwolf Programs

This is the weirdest bug I've ever seen, let me restart my computer

Unrelated String

I never checked to make sure the angles are all actually multiples of 90 so I just used Euler's formula lmao

complex numbers for the win

Redwolf Programs

@Lyxal Okay, I think I have the solution for yours. What are you getting?

Razetime

Completely forgot about complex numbers

HyperNeutrino

6:03 AM

i'm pretty sure i'm right...?

wait

which way do your directions face

mine are + = north/east

Redwolf Programs

ohhh I use negative for north

HyperNeutrino

ah

i don't like imagining it as screen coords, i still think of it from math cartesian grid

i like complex tho cuz it's unambiguous

unfortunate for JS but it makes it so much nicer in py at least

Razetime

cool I finished it

HyperNeutrino

nice!

Razetime

APL worked pretty well for this

just needed a bit to correctly rotate stuff

yesterday's was more difficult to fix

Lyxal

6:11 AM

@RedwolfPrograms 168611

Redwolf Programs

Nope

Lyxal

Lower or higher?

Redwolf Programs

The correct answer is higher

Is your code in Python?

Lyxal

yes

Redwolf Programs

If you want I can compare it to mine and look for any obvious differences

Lyxal

6:15 AM

Here's the left turn snippet:

    times = direction[1] // 90
    for k in range(times):
          temp = way_col
          way_col = way_row
          way_row = -temp

Redwolf Programs

Is your north positive or negative?

Lyxal

positive

Redwolf Programs

The issue might not be in the turns, then. That code looks fine.

Does it work for the sample input?

ASCII-only

@Lyxal nasty. even in js i used parallel assignment

Lyxal

@RedwolfPrograms yes

ASCII-only

6:21 AM

@Lyxal yo do u have ur code

@HyperNeutrino same lmao, it's what i'm more familiar

HyperNeutrino

BTW in python x, y = y, x lets you swap variables

so you can do parallel reassignments

ASCII-only

@HyperNeutrino not a big issue tbh not like it's much longer

HyperNeutrino

true but like

Lyxal

Im more focused on solving than elegance at this stage

HyperNeutrino

a) i'm lazy
b) saving a few seconds can matter a good amount

i mean, unless i just forget about operator precedence and get 284th :/

ASCII-only

6:23 AM

@HyperNeutrino in js it's [x, y] = [y, x]

>:( still salty i had to do it on phone smh

HyperNeutrino

oh, rip

Lyxal

gist.github.com/Lyxal/7d1a353f0ff029ed32a1ae92452ad045

ASCII-only

which part, lyxal

1 or 2

Lyxal

2

part 1 easy part 2 not

Unrelated String

riiip

Razetime

6:24 AM

part2 also kinda easy

Lyxal

it works exactly as dictated by the sample input

ASCII-only

both parts very easy

Lyxal

but not on the big input

Razetime

ah yes, frick.py

ASCII-only

i feel like you got ur signs mixed up on L and R

Redwolf Programs

6:26 AM

I tried swapping them on mine but I got a totally different result than Lyxal's

Lyxal

@RedwolfPrograms liar

Redwolf Programs

Wdym

Lyxal

it was lower

48739

ASCII-only

lmao

Razetime

whut

Lyxal

6:28 AM

turns out i had it working for about 30 mins now

ASCII-only

lmfao

you know you couldve just submitted right

Redwolf Programs

I said the correct result was higher, ohhhhh I'm so sorry I misread that as 16 thousand I'm sorry

Unrelated String

at one point i had an extremely incomplete solution that just happened by total coincindence to give the right answer for the example

Lyxal

@RedwolfPrograms oh wow

ASCII-only

well the example is small

also it has literally 3 different operations

Unrelated String

6:29 AM

yep lol

ASCII-only

out of the 7 possible ones

Lyxal

Worse, hn said their answer was "like 150k" and redwolf said it was higher than 160k

TIL don't trust chat. Trust chalk

Chalk good it doesn't lie

And it doesn't make mistakes

HyperNeutrino

wait what happened

Redwolf Programs

That was totally my fault, I'm really sorry about that :(

Razetime

also why is 13 going backward in the map

mine was 13340

Lyxal

6:32 AM

@HyperNeutrino I asked redwolf to verify my answer, I said 160k, he said higher but the real answer was lower

All's good now

HyperNeutrino

oh

Redwolf Programs

I misread it as a five digit number :/

HyperNeutrino

are the outputs all in close range?

ASCII-only

@Lyxal fr tho why didn't you try submitting

you have more than enough time

can submit like 5 times in 30 mins

Redwolf Programs

It was delaying by like 10 minutes for them

Lyxal

6:33 AM

@ASCII-only 10 min delays that's why

ASCII-only

how th did you get it to 10 min delays o_o

Redwolf Programs

I really think those increasing delays are too harsh

Lyxal

>5 attempts

ASCII-only

@RedwolfPrograms i don't think so tbh

Lyxal

1 min, 5 mins then 10

ASCII-only

6:34 AM

see the thing is

i couldn't even figure out 5 different ways to do it if i tried

Redwolf Programs

I think 1 -> 2 -> 4 -> 8 would be better than 1 -> 5 -> 10

ASCII-only

isn't it like 1 -> 1 -> 1 -> 5 -> 10

Lyxal

5 mins is bearable, 10 mins makes you precious about submitting

Redwolf Programs

Yeah

ASCII-only

eh i mean

Redwolf Programs

6:36 AM

What does it do after 10, an hour?

ASCII-only

if it takes 30 mins to debug, 10 mins doesn't hurt

Redwolf Programs

It didn't, I just made a mistake

Lyxal

How's this for a fall from grace:

Day       Time   Rank  Score       Time  Rank  Score
 12   00:07:50    429      0   01:27:25  5274      0

ASCII-only

oof

and i thought i did bad on part 2

Razetime

@Lyxal I was in the 10,000s for day 7 lol

Lyxal

6:42 AM

Off topic: it costs $469aud a year to register and keep the numberplate "Frick" in New South Wales

ASCII-only

a year o_o

Lyxal

Yep

A year

ASCII-only

also, since when was literally everyone in australia

Lyxal

Wdym

Redwolf Programs

Totally worth it, especially since the price ends in $69

ASCII-only

6:43 AM

out of the people on the minecraft server, lyxal, taco and i are in australia i think?

Lyxal

@ASCII-only we need JoKing to join and then we'll have more people down under

Redwolf Programs

I'm surprised y'all don't lag super bad, being 14,000 km from my server

ASCII-only

we're all surprised too

Lyxal

@RedwolfPrograms well actually I do

Sometimes

You just don't see it

Razetime

lemme get an mc launcher

ASCII-only

6:47 AM

i did yay -S minecraft and it somehow just worked

Lyxal

Can someone look at spawn please

I built something epic

But scuffed it in the making

Redwolf Programs

If it wasn't one in the morning I would

You know what, what the heck

It's a weekend

ASCII-only

i would if there wasn't spawn chunk protection

Lyxal

@RedwolfPrograms go to sleep

Redwolf Programs

I opped you, ascii-only

Lyxal

6:48 AM

I've bullied people into sleeping before so I'll do it agian

ASCII-only

well... correction then. i would if i could find diamonds

i've found 40 iron at lava layer

Redwolf Programs

Wait, normal spawn or stronghold spawn?

ASCII-only

should really set up a discord server or something to avoid polluting tnb further btw

Redwolf Programs

Go to the CG&CC Gaming room

Unrelated String

7:20 AM

@ASCII-only it's almost as if we already have one

New Sandboxed Posts

7:47 AM

1

A: Sandbox for Proposed Challenges

Scramble a Megaminx! A megaminx is a dodecahedral version of the familiar Rubik's cube. Since 2008, the World Cube Association uses Stefan Pochmann's megaminx scrambler. The scrambles look like this: R-- D++ R++ D-- R++ D-- R++ D++ R-- D-- U' R++ D-- R++ D-- R-- D++ R-- D-- R-- D-- U' R++ D++ R--...

Razetime

10:24 AM

@Neil is there a way to convert a direction string to one of the predefined direction constants?

ASCII-only

10:36 AM

@Razetime what's this

Lyxal

Presumably charcoal

ASCII-only

what even is charcoal smh

Lyxal

Honestly idk

Something about a golfing language

Problem is I think it isn't ascii only

I hear it has unicode

ASCII-only

i heard it has a custom codepage

anyway am i going senile what's a direction string

Lyxal

Ask razetime because I actually don't know

I do know that Razetime uses charcoal so thats the assumption I made

@ASCII-only kinda ironic really

ASCII-only

10:46 AM

damn i changed my avatar a couple years ago for halloween

and just never changed it back lmao

just noticed

Lyxal

So what was it originally?

ASCII-only

><>

Lyxal

Why Ascii-only when charcoal uses Unicode chars?

ASCII-only

link. the story goes, he didn't make his name literally "ascii-only" so i thought someone had to

Lyxal

"Dr Green Eggs and Iron Man"?

Dang i missed out on a lot

Razetime

10:54 AM

@ASCII-only ah yes you're online for now

pls help

ASCII-only

yea, question. wth is a direction string

Razetime

Like change "NSEW" to [:Up, :Down, :Right, :Left]

ASCII-only

er

Razetime

or even "^v><" to that

ASCII-only

you can use Direction(AtIndex("udlr", Find("NSEW", c))) maybe?

is Direction/Directions undocumented? maybe

Razetime

10:58 AM

didn't come up when I ctrl-F'd Direction

Lyxal

Hey while we're talking about charcoal: was there ever a verbosifier made?

Like I know there's a deverbosifier (very helpful NGL), but can I go the other way?

ASCII-only

@Lyxal i mean, there's always astify?

is there a usecase for turning something into the verbose form and not just writing it like that in the first place?

Razetime

another question

Lyxal

Mainly learning charcoal/seeing what the verbose representation of a symbolic expression is

Razetime

what does Rule(→) do

ASCII-only

11:01 AM

for the mathematica subset it had lmao

idk what i was doing tbh

Lyxal

Okay astify is epic

ASCII-only

@Razetime btw

Razetime

@ASCII-only great, I'll use it

ASCII-only

@Lyxal there are one or two bugs, if you find them a PR/ping would be greatly appreciated. funnily enough, the link above does encounter one of said bugs i just cba fixing rn

guys

guys wanna see something cursed?

link. link 2 - half expected this to simplify but i guess not. link 3

link 4 oh boy is this cursed. i think i've cursed myself enough for today so i'll stop

Razetime

@ASCII-only Ta da

ASCII-only

11:14 AM

:o

@Razetime btw2

Razetime

oo multiline string

ASCII-only

here is the relevant code. basically, it tries to read it as a python list (if it's not a list, it fails); when that fails it splits by newline if it's multiple lines, otherwise by space. as a side effect, sometimes it acts weird when you give it one line, if you add a newline at the end of input that'll make it split by line instead

Razetime

cool

I just use q and h most of the time and take input as an array

ASCII-only

another fun gimmick

Razetime

wait what

ASCII-only

11:26 AM

what

Razetime

so it automatically finds a preset variable initialized to strings in the program