A Model of Oil Supply 17 supplying capacity cosuming capacity 17 16 18 a 12 17 00 12 10 15 00 >(e h 20 20 00 Vertices: b 13 30 a,b:refineries g,h,i:markets others:relays 17 >pipeline,with max capacity/week 2020/12/08 5A Model of Oil Supply a b c d f e g h i S ∞ ∞ D ∞ ∞ ∞ 16 18 12 17 10 7 13 30 20 15 Vertices: a, b: refineries g, h, i: markets others: relays 17 pipeline, with max capacity/week 17 17 supplying capacity cosuming capacity 12 20 2020/12/08 5