There are two linked lists that each represent a number, and each node in the list represents a number. A pointer should be returned to a new list outlining a connection of the two numbers so that each node in it represents a digit in it.

Data 26 registers A-Z, with A and B initialized to some value and the rest to 0. There are 4 actions that can be performed: adding 1 to the register, subtracting 1 from the register, jumping to another section in the code and ending the run. The value | A-B | should be entered in register C.