Pack the balls in a box!

Suppose we have a set of balls and a large cuboid box, with a rectangle as its base. The box has a fixed size at the base, but we can choose its height. We would like to place all the balls within the box, and at the same time try to minimize its height. Input First, 2 integers, 10 ≤ a,b ≤ 100 - the dimensions of the rectangular base of the box. Then, an integer 1 ≤ n ≤ 10000, representing the n