data;

set V := a b c d e f g h i j k l m;

param s := c;
param t := f;

param: E: k := 
	a b 19
	a c 7
	a d 13
	a e 2
	a f 9
	b c 14
	b f 10
	b g 18
	b h 2
	c d 11
	c h 7
	c i 15
	c j 16
	d e 17
	d j 11
	d k 16
	e f 15
	e k 8
	e l 13
	f g 12
	f l 19
	f m 4
	g h 9
	g m 5
	h i 14
	i j 3
	j k 17
	k l 20
	l m 1
;