Part 1 was relatively easy, 2 was harder.
> So, by asking the monkey to sell the *first time*
> each buyer's prices go down 2, then up 1, then
> down 1, then up 3, you would get 23 (7 + 7 + 9)
> bananas!
Emphazis mine. Earlier versions of the code missed
this fact, and added all occourences of the sequence.
providing a answer that is too high.
