BEST_CASE(Omega(n^1),?) Solution: --------- "Cons" :: ["A"(0) x "A"(1)] -(1)-> "A"(1) "Cons" :: ["A"(0) x "A"(0)] -(0)-> "A"(0) "Nil" :: [] -(0)-> "A"(0) "Nil" :: [] -(0)-> "A"(1) "goal" :: ["A"(1)] -(1)-> "A"(0) "mapconsapp" :: ["A"(0) x "A"(0) x "A"(0)] -(1)-> "A"(0) "permute" :: ["A"(1)] -(1)-> "A"(0) "revapp" :: ["A"(0) x "A"(0)] -(1)-> "A"(0) "select" :: ["A"(0) x "A"(0) x "A"(1)] -(1)-> "A"(0) Cost Free Signatures: --------------------- "Cons" :: ["A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "Nil" :: [] -(0)-> "A"_cf(0) "mapconsapp" :: ["A"_cf(0) x "A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "permute" :: ["A"_cf(0)] -(0)-> "A"_cf(0) "revapp" :: ["A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "select" :: ["A"_cf(0) x "A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0)