Let
\(f(x) = \left\{ \begin{array}{cl} 2-x & \text{ if } x \leq 1, \\ 2x-x^2 & \text{ if } x>1. \end{array} \right.\)
Find f(-3) + f(0) + f(3).
f(-3) + f(0) + f(3) = 11.
