ref: bbfee60f6716dce8cf7a802c044cf7d0fe8bb6f2
dir: /test/tcolor.sl/
; color for performance
(load "color.sl")
; 100x color 5 queens
(def Q (generate-5x5-pairs))
(def (ct)
(set! C (color-pairs Q '(a b c d e)))
(dotimes (n 99) (color-pairs Q '(a b c d e))))
(time (ct))
(assert (equal? C
'((23 . a) (9 . a) (22 . b) (17 . d) (14 . d) (8 . b) (21 . e)
(19 . b) (16 . c) (13 . c) (11 . b) (7 . e) (24 . c) (20 . d)
(18 . e) (15 . a) (12 . a) (10 . e) (6 . d) (5 . c) (4 . e)
(3 . d) (2 . c) (0 . b) (1 . a))))