BEST_CASE(Omega(n^3),?)

Solution:
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  "Cons" :: ["A"(0, 0, 0) x "A"(0, 0, 0)] -(0)-> "A"(0, 0, 0)
  "Nil" :: [] -(0)-> "A"(0, 0, 0)
  "intlookup" :: ["A"(0, 0, 0) x "A"(1, 1, 1)] -(1)-> "A"(0, 0, 0)
  "lookup" :: ["A"(0, 0, 0) x "A"(0, 0, 0)] -(1)-> "A"(0, 0, 0)
  "run" :: ["A"(0, 0, 0) x "A"(1, 1, 1)] -(1)-> "A"(0, 0, 0)


Cost Free Signatures:
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