This prompted me to try out claude code on last years... To absolutely no surprise, it looks like the model was trained on advent of code. For the day 2 challenge, I put in this prompt:
for each row in input.txt, identify all the rows where: 1. the columns either all increase or decrease 2. the increase/decrease is >1 and <4. count total # of rows that match this. write a python script
It solved it very quickly. However...
It's solution code included this comment:
Check if a report is safe based on two criteria: │
│ 1. All levels must be either all increasing or all decreasing │
│ 2. Adjacent differences must be between 1 and 3 (inclusive)
This is odd because I never mentioned reports or levels... However the challenge does:
The unusual data (your puzzle input) consists of many reports, one report per line. Each report is a list of numbers called levels that are separated by spaces. For example:
It's solution code included this comment:
This is odd because I never mentioned reports or levels... However the challenge does: