Putnam 1979 A1. Find the set of positive integers with sum 1979 and maximum possible product. A2.
R is the reals.
A and B are disjoint sets of n points in the plane. No three points of A B are collinear. F is a finite field with n elements. The intersections of S with each of the four quadrants have the same area. Show that the area of S is at most 4. B6.