Problem difficulty so far (up to day 16)
- Day 15 - Warehouse Woes: 30m00s
- Day 12 - Garden Groups: 17m42s
- Day 14 - Restroom Redoubt: 15m48s
- Day 09 - Disk Fragmenter: 14m05s
- Day 16 - Reindeer Maze: 13m47s
- Day 13 - Claw Contraption: 11m04s
- Day 06 - Guard Gallivant: 08m53s
- Day 08 - Resonant Collinearity: 07m12s
- Day 11 - Plutonian Pebbles: 06m24s
- Day 04 - Ceres Search: 05m41s
- Day 02 - Red Nosed Reports: 04m42s
- Day 10 - Hoof It: 04m14s
- Day 07 - Bridge Repair: 03m47s
- Day 05 - Print Queue: 03m43s
- Day 03 - Mull It Over: 03m22s
- Day 01 - Historian Hysteria: 02m31s
17!
p1 discussion
Simultaneously very fun and also the fucking worst.
Fun: Ooooh, I get to simulate a computer, exciting!
Worst: Literally 8 edge cases where fucking up even just one can fuck up your hour.
p2 discussion
I did this by hand. sort of. I mean I didn’t code up something that found the answer.
Basically I looked at the program in the input and wrote it out, and realised that A was essentially a loop variable, where the number of iterations was the number of octal digits A would take to represent. The most significant octal digits (octits?) would determine the tail end of the output sequence, so to find the smallest A you can do a DFS starting from the MS octit. I did this by hand.
re p2
Also did this by hand to get my precious gold star, but then actually went back and implemented it Some JQ extension required:
re: p1
I literally created different test inputs for all the examples given and that found a lot of bugs for me. Specifically the difference between literal and combo operators.