@plujan, I can't get "Stack" to work even with your revised instructions. I can get it to get the absolute value of the result spot on, but the sign of the output will sometimes (and for the life of me I can't figure out why) fail. So, for example if the expected output is 1234 I get one of two possible answers (1234 and -1234). So I am able to pass some test cases and then I fail one at random. To achieve this result I used the following formula based on your solution, I1-I2+I3-I4 [..].
Doing as you said in your comment, "Return the value in(I) - in(I-1) + in(I-2) - in(I-3)...", will yield results that are either too big or two small by either two or three and will still present sign issues (again, I can't figure out a common denominator)
Any thoughts? I think i am loosing my mind here...plz help.
Another bug for you. I accidentally executed <>. This created a mapping to gi to gi for some reason, and broke the getip command for the game. There was no way to get it back, corrupted my save. Cool game though
 "CiggbitCembly"){kind=icon}
 "OutHack"){kind=icon}