PUZZDESC
0.01
Laszlo
"Carol has given me some good news and some bad news.

The good news is that she has a new part ready - a `Subtractor` module. The bad news is that she is having trouble keeping up with your use of `Adder` and `Number` modules.

I wonder if we can substitute those parts away. Do you think you can build a machine that ~doubles the value in memory slot #0~ without them?"
