A company produces x units of good A and y units of good B. The goods are sold for p = 100 − x dollars for each unit of good A and q = 100 − y dollars per unit of good B. The cost (in dollars) of producing these two goods is given by the combined cost function C(x,y) = x^2 + 2xy + y^2. How should the company choose the levels of production x and y to maximize profit?