WORST_CASE(?,O(n^1))

Solution:
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  "Cons" :: ["A"(0) x "A"(12)] -(12)-> "A"(12)
  "Cons" :: ["A"(0) x "A"(1)] -(1)-> "A"(1)
  "Cons" :: ["A"(0) x "A"(15)] -(15)-> "A"(15)
  "Leaf" :: ["A"(0)] -(14)-> "A"(14)
  "Nil" :: [] -(0)-> "A"(12)
  "Nil" :: [] -(0)-> "A"(15)
  "Nil" :: [] -(0)-> "A"(14)
  "Node" :: ["A"(14) x "A"(14)] -(14)-> "A"(14)
  "dfsAcc#3" :: ["A"(14) x "A"(15)] -(2)-> "A"(15)
  "main" :: ["A"(14)] -(16)-> "A"(1)
  "revApp#2" :: ["A"(12) x "A"(1)] -(4)-> "A"(1)


Cost Free Signatures:
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Base Constructors:
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  "\"Cons\"_A" :: ["A"(0) x "A"(1)] -(1)-> "A"(1)
  "\"Leaf\"_A" :: ["A"(0)] -(1)-> "A"(1)
  "\"Nil\"_A" :: [] -(0)-> "A"(1)
  "\"Node\"_A" :: ["A"(1) x "A"(1)] -(1)-> "A"(1)