WORST_CASE(?,O(n^1)) Solution: --------- f :: [A(9) x A(0) x A(0)] -(5)-> A(0) g :: [A(9)] -(9)-> A(9) g :: [A(0)] -(0)-> A(0) Cost Free Signatures: --------------------- f :: [A_cf(0) x A_cf(0) x A_cf(0)] -(0)-> A_cf(0) g :: [A_cf(0)] -(0)-> A_cf(0) Base Constructors: ------------------ g_A :: [A(1)] -(1)-> A(1)