PUZZDESC
0.01
Carol
"I'm tryin' to control costs, so I want you to build this machine on the cheap. It should ~double each number in memory, but cost $8 or less.~

`Numbers` are free; other modules cost `$2 each.` To get a cheap module, `click on its delay in the bottom-left.` That'll halve its cost (to $1), but increase its delay by 2."
