You have been assigned the task of computing the sum of 1000 four-digit numbers as rapidly as possible. You hold in your hands a stack of 1000 index cards, each containing a single number, and you are in charge of 1,000 expert accountants, each with a calculator. You may
choose to use the services of any number of these accountants. The accountants are sitting at desks that are organized in to 25 rows and
40 columns. Each accountant is able to pass cards to the four accounts nearest her - in front, in back, to left, to right.
a. Describe a fast method of distributing the cards to the accountants.
b. Describe a fast method of accumulating the sub totals generated by the active accountants in to grand total.