WORST_CASE(?,O(n^1))

Solution:
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  = :: [A(0) x A(0)] -(1)-> A(0)
  and :: [A(0) x A(0)] -(0)-> A(0)
  implies :: [A(0) x A(0)] -(1)-> A(0)
  not :: [A(0)] -(1)-> A(0)
  or :: [A(0) x A(0)] -(1)-> A(0)
  true :: [] -(0)-> A(0)
  xor :: [A(0) x A(0)] -(0)-> A(0)


Cost Free Signatures:
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