Hey guys, I'm back on day 7, part 1 (yeah, a bit b...

# advent-of-code

[rocketraman]

Hey guys, I'm back on day 7, part 1 (yeah, a bit behind :-)) -- I was happy because (seemingly) my existing computer from day 5 was sufficient for day 7 without any changes. However, upon testing, I see my code works on the specific phases given, but as far as I can tell those are not the max thruster values of those programs. Can someone confirm for me what the output of program

3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0

should be with phases 4,3,2,2,0 ? It should be less than 43210 according to the text, but I get 43220.

[mickeelm]

I get the same result - 43220 with my part 1 solution. Did you first submit 43210 and you got the answer that it was too high?

[mickeelm]

But...hmmm, what kind of program is this? It just outputs the phases. Phases 1,2,3,4,0 gives you the output 12340 🤷‍♂️

[rocketraman]

My answer to the real input is too high. I'm deciding with the test programs given and I get the right answer for all of them for the specific phases shown, but those are not the max values of all possible phases for those programs, as is stated by the puzzle.

[mickeelm]

All right, yeah I see that now from the examples. What about the other test programs, do you get the expected results there?

[rocketraman]

I do but same deal... The specific phases shown work but those are not the max values of all possible phases as far as I can tell.

[mickeelm]

Depending on if you want to cheat or not, you can just DM me your input and I'll run it. I mean I can see if I get another result than you at least

[mickeelm]

Which I guess, wouldn't really be cheating 😄

[rocketraman]

The input? I'm just using the test inputs in the text.

[mickeelm]

What I meant was your puzzle input, I can run that through my program if you wish, and see if I get another result. But...

[rocketraman]

I'm not getting the right result to the actual puzzle input so presumably yours would indeed be different.

[mickeelm]

You wrote that it says in the text, that 4,3,2,2,0 should be less than 43210 according to the text. What do you mean there? The example uses 4,3,2,1,0 and the result expected is 43210.

[mickeelm]

Yeah I was just thinking that maybe there could be an error on the AoC side, e.g. that you indeed have the right answer or so. So just to double check

[rocketraman]

Right but it said that is the maximum thruster value for that program. But if phase 43220 outputs a larger value then 43210 is not the max. The max appears to be 44444.

[rocketraman]

Which makes sense as it seems all that program does is output the phase values.

[mickeelm]

I think he means the max for that phase combination

[rocketraman]

That makes no sense. For a given phase combination there is only one output value.

[rocketraman]

From the last amplifier

[mickeelm]

YOu are right, sorry

[mickeelm]

It was a couple of days ago

[mickeelm]

BUT

[mickeelm]

You are only allowed to use each phase setting once per amplifier

[mickeelm]

now I remember 🙂

[rocketraman]

Aha!

[mickeelm]

So 43220 is illegal 🙂

[rocketraman]

Gotcha! That's my problem.

[mickeelm]

Got confused there for a bit, but great, that should be your solution then 🙂

[rocketraman]

Yup should be easy to do, thanks!

[mickeelm]

Np