Advent of Code


--- Day 5: Doesn't He Have Intern-Elves For This? ---

Santa needs help figuring out which strings in his text file are naughty or nice.

A nice string is one with all of the following properties:

For example:

How many strings are nice?

To play, please identify yourself via one of these services:

[GitHub] [Google] [Twitter] [Reddit]

(Twitter users: if you have auth problems that claim "There is no request token for this page", please clear your cookies and try again.)