You will find in here all the submissions for this months code challenge. Please take the time to see how other solved this months problem and feel free to reply to the email thread with comments.
Here's a recap of the problem:
Write a program that adds two (or more) integers, without using any of the plus literal (+), the minus literal (-), the add method (or equivalent), the subtraction method (or equivalent), the sum method. The integers can be negative, zero or positive.