Sun, 14 Oct 2018 19:28:24 +0300 add extra rule for negative integers
alfadur [Sun, 14 Oct 2018 19:28:24 +0300] rev 13926
add extra rule for negative integers
(0) -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 tip