[1, 4, 16]
[2, 3, 4]
[25]
[(:: 1 (:: 0 (:: 1 nil)))]
[]
0.54user 0.01system 0:00.55elapsed 99%CPU (0avgtext+0avgdata 34244maxresident)k
0inputs+0outputs (0major+3775minor)pagefaults 0swaps