(open-new-stack n0 n1)
(start-order o5 n1 n0)
(make-product-p5 )
(ship-order-o5 n0 n1)
(start-order o1 n1 n0)
(open-new-stack n0 n1)
(start-order o2 n1 n0)
(make-product-p2 )
(ship-order-o1 n0 n1)
(start-order o4 n1 n0)
(make-product-p4 )
(make-product-p1 )
(ship-order-o2 n0 n1)
(start-order o3 n1 n0)
(make-product-p3 )
(ship-order-o3 n0 n1)
(ship-order-o4 n1 n2)
; cost = 2 (general cost)
