The price of each item in a store is nonnegative. The store manager is only interested in rules of certain forms, using the constraints given below. […]
) Watch What Happened in the Tunnel (Edwin S. Porter, 1903) viewable at http://www.youtube.com/watch?v=YCa59e-qOAU Watch it several times–it’s 1 minute long and silent—there is no sound. […]