WORST_CASE(?,O(n^1))

Solution:
---------

  0 :: [] -(0)-> A(3)
  0 :: [] -(0)-> A(5)
  0 :: [] -(0)-> A(0)
  bits :: [A(5)] -(1)-> A(0)
  half :: [A(3)] -(1)-> A(5)
  s :: [A(3)] -(3)-> A(3)
  s :: [A(5)] -(5)-> A(5)
  s :: [A(0)] -(0)-> A(0)


Cost Free Signatures:
---------------------

  0 :: [] -(0)-> A_cf(0)
  bits :: [A_cf(0)] -(0)-> A_cf(0)
  half :: [A_cf(0)] -(0)-> A_cf(0)
  s :: [A_cf(0)] -(0)-> A_cf(0)