a	b	c	d	y
-1	-1	-1	-1	14.8
1	-1	-1	-1	14.5
-1	1	-1	-1	28.1
1	1	-1	-1	19.4
-1	-1	1	-1	18.4
1	-1	1	-1	15.7
-1	1	1	-1	27.3
1	1	1	-1	28.2
-1	-1	-1	1	16
1	-1	-1	1	15.1
-1	1	-1	1	18.9
1	1	-1	1	22
-1	-1	1	1	19.8
1	-1	1	1	18.9
-1	1	1	1	29.9
1	1	1	1	27.4