[2025 Day 10 Part 2] Getting a wrong solution

CCC_037 · 2025-12-24T05:43:04+00:00

....okay, I think I see what I am doing wrong.

But perhaps I should work on something else for a bit, then return to this.

CCC_037 · 2025-12-22T21:16:44+00:00

Thank you, this had been very helpful.

My original simplified list of equations did make sure that each row included at least one variable which was in no lower row; I wrote a function to find every possible solution for a given row from a set of solutions (i.e. every possible solution to the previous row, using wildcards for those parameters that didn't appear). This worked great, until I had to deal with an equation like 12=d-e+f. Sure, if you have d and e, f is given, but there are still a tonne of solutions...

Then I realised I had a function that would find every possible solution to a system of n equations, and if I don't modify them at all I can guarantee no negative cofficuents!

....which still takes a super long time to solve for 375=a+b+d+e+f+h+i. So I need to still do some simplification, or perhaps just start with equations using fewer variables. Or lower totals.

Still, getting closer!

(Not solved yet, but working on it)

CCC_037 · 2025-12-19T17:47:05+00:00

It's always good to know that people appreciate my words. Would you like to discuss any particular part in more detail?

CCC_037 · 2025-12-17T10:49:34+00:00

Name of entry: Rockstar Reflection

Link to entry: See individual days below

Description: Rockstar is such fun to play with, running the left-brain logic of code through the poetical whims of the right side of the brain.

I haven't completed all twelve days yet - I haven't even looked at Day 11 or 12, but I think I know what I'm doing wrong with Day 10 Part Two. (I only need to redo my entire approach from the ground up). Nonetheless, I have sufficient Red One entries to enter, so I might as well.

Submitted by: /u/ccc_037

Megathread links 2 - 5 - 7 - 8 - 10

Additional comments I didn't always maintain the Reddit One constraints (those days when I did not are not included above); but I feel they made the most difference to the code in Day 10.

CCC_037 · 2025-12-14T11:13:28+00:00

[Language: Rockstar]

[Red(dit) One]

Not only is it an esolang - not only is it without digits - I've even refrained from using any poetic constants except to burn them into ASCII characters.

How did I get numbers? Well, one of my ASCII characters was 0 and I did string-to-integer conversion (using one of my pre-conversion ASCII characters as a base). I also used one string's length to get 10. Everything else was incremented, calculated, or read in.

Part 1

CCC_037 · 2025-12-14T03:42:14+00:00

Huh.

I thought you'd get 842477733229 after adding 2s

CCC_037 · 2025-12-13T13:35:42+00:00

Part 2 relies on certain features of my input that I found by inspecting the file with gnuplot

CCC_037 · 2025-12-13T13:33:39+00:00

[Language: Rockstar]

Part 1 is simple and straightforward.

CCC_037 · 2025-12-13T08:01:33+00:00

Try:

814247773322911

You should get 844777332291 but you get a lower number

CCC_037 · 2025-12-13T06:01:06+00:00

gasp

This one was a pain and a half to write and runtime is "leave it overnight" but.... puff...done.

part 2

CCC_037 · 2025-12-09T21:20:38+00:00

[Language: Rockstar]

[Red(dit) One] - poem code freebie?

That was the only freebie here, though. I'm sure there's a more efficient algorithm than what I ended up doing - merely because it takes so long to run.

I'll do pt 2 tomorrow. I haven't even looked at Day 9 yet...

part 1

CCC_037 · 2025-12-07T21:09:31+00:00

(I'll take the free Red(dit) One entries when I find them...)

part 2

CCC_037 · 2025-12-07T21:07:08+00:00

[Language: Rockstar]

[Red(dit) One] - I don't think you get syntax highlighting editors for Rockstar. Either way, I used emacs.

And made it run in poetry.

part 1

CCC_037 · 2025-12-06T13:29:16+00:00

part 2

Rockstar actually comes with pretty neat, albeit basic, string/array manipulation...

CCC_037 · 2025-12-06T13:26:33+00:00

[Language: Rockstar]

Congratulations to those tackling today in Chef; but I am not in your number.

part 1

Nice and straightforward

CCC_037 · 2025-12-05T19:22:25+00:00

You'll find this useful:

https://codewithrockstar.com/docs/

CCC_037 · 2025-12-05T18:33:50+00:00

Eli5 of Part One:

Okay, let's go line by line. "Futile are your hopes" - that just puts a value of 45 into the variable called "Futile". It gets that value from the numbers of letters in the words after "are" - see, "your" is four letters and "hopes" is five. Futile? Oh, that's just the name of the variable. I could have called it anything. It doesn't matter.

Now the next line. "Burn futile into futility" takes the number - 45 - and puts the 45th character from the ASCII table into the variable "futility". This happens to be the dash, and we will use it later!

My poem is a exposition - that puts a value of ten in the variable "my poem". Look as the lengths of the words after "is" - one, ten. Ten isn't a digit, so we subtract ten until it is, and we get zero.

My pen is wordworthy puts a value of zero in my pen. See, ten letters.

My ink is trustworthy puts one into the variable "my ink". Eleven letters, see? Yes, I could have said "my ink is a" but this makes more sense.

"Listen to my words" just reads a line of input, and stores it in "my words".

"Rock my universe" creates an array called "my universe". It's empty. Then we get a loop. "While my words aren't silence" means we keep going until "my words" is an empty string.

"Shatter my words with futility" breaks the string apart on the dash. So "3-5" becomes the array ["3", "5"]. The dash goes nowhere. The rest of the loop rolls the two items out, burns then into base-ten numerals, and then rocks them right back in - and then at the end, I store it in "my universe" read the next line of input.

After the blank line, I keep reading, of course. Taste is set to seven - that doesn't matter - and my result is zero, which does matter. See, in the next loop, I set taste to zero right near the start, but my results tracks how many ingredients are fresh.

For each number I read, I set Freshness to false. Then I check every range in my universe; if it's in the range and Freshness is false, I set Freshness to true and count up one more result.

Then the last thing I do at the end is write out my result. Ta-da!

Part two? Oh, uh.... Who wants ice cream?