#AdventOfCode day 10
another one where, with the right input, this could look very interesting, but where the actual given puzzle input has a rather boring structure (I will probably generate a more interesting instance myself later)
Here's a fun TIL: Because the ratio of terms in the Fibonacci sequence approaches phi, and because phi is close to the ratio of km to miles, you can approximate conversion between distances with adjacent Fibonacci numbers.
So 2 km ≈ 1 mile, 3 km ≈ 2 miles, 5 km ≈ 3 miles, 8 km ≈ 5 miles, 13 km ≈ 8 miles, etc, etc
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