Day 1

Part 1

Took some time to remember how to read input.

I assumed that I could build the list of pairs from the start and never tracing back (order doesn't matter).

Have to take the previous solution and deal with combinations of three values.

Hardest part is figuring out how to take a list of numbers and return a list of 3 tuples for the combinations of pairs:

triples xs = sequence $ replicate 3 xs

This produces some additional data but I assume these entries won't be false positives.