Got this one ruined due to a post not masking
spoilers:
https://www.reddit.com/r/adventofcode/comments/1pkxibs/2025_day_25_part_1_still_pretty_clueless_why_its/
Basically, ignore the test case and just wing it by
asuming the 3x3 can be placed without overlaps. Id
the number of shapes * 3x3 is bigger than the available
canvas, it won't fit.
A naive first check to do before making premature
optimizations.
I would have gone the zip() hell route to prove
it actually works, but after grasping at the puzzle
input i realized it would tka a looong time to
calculate.