Module day05 

A Maze of Twisty Trampolines, All Alike

Part one brute forces the jumps. For part two, we can make an observation that the jump offsets will eventually flip-flop between 2 or 3 starting from the beginning, for example:

    2 3 2 3 -1

The twos and threes can be represented in binary compact form, using 0 for 2 and 1 for 3:

    0101

We then precompute all possible combinations for blocks of width 16, using this to accelerate part two.

Functions

compute_block 🔒

parse

part1

Brute force implementation.

part2