Done day 20 now! Understanding how to allow for infinite extent renders
the difference
between parts 1 & 2 also trivial!
Cheers,
Mike
On 30/12/2021 18:31, 'Mike Day' via Chat wrote:
Re 19, I gave up trying to understand why there were only 24 possible
orientations, when I thought there should be 48, not knowing what they meant by
“facing”. Instead, I used M = round B’ %. A’ for “matching” sets of coordinates
A & B. Finding these matching sets is the main part of the problem. (A’ is
the result of a minor tweak to A.)
Part 2 is trivial once you’ve done part 1.
As for problem 20... thought it was simple until I realised the problem with
infinite extent, which doesn’t affect the example, but does come into play for
the actual data!
Mike
Sent from my iPad
On 30 Dec 2021, at 13:31, David Lambert <[email protected]> wrote:
Laughing aloud, I haven't yet pretended to read those baffling instructions.
On 12/30/21 7:00 AM, [email protected] wrote:
Date: Wed, 29 Dec 2021 19:44:34 +0000
From: "'Michael Day' via Chat"<[email protected]>
To:[email protected]
Subject: Re: [Jchat] Advent of Code
Message-ID:<[email protected]>
Content-Type: text/plain; charset=UTF-8; format=flowed
I've been stuck for ages on day 19, part 1 .... just couldn't see what
was wrong...
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