This is a series of programming challenges for beginners and experienced Caché programmers.
For an introduction : go to article https://community.intersystems.com/post/advent-code-2016-day1-no-time-t…
The challenge of today has nothing to do with real two-factor authentication ! (sorry if you came to this article by searching the real thing)
For the complete explanation of the challenge, go to http://adventofcode.com/2016/day/8.
Your input (http://adventofcode.com/2016/day/8/input) consists of a series of three basic instructions to control the display of a screen.
The goal of the firs




