Max $5$R $+7$C

s$.$t$.$

R $+$

$3$

$2$

C $<=800$ Cutting and sewing

$1$

$2$

R $+$

$1$

$3$

C $<=300$ Finishing

$1$

$8$

R $+$

$1$

$4$

C $<=100$ Packaging and shipping

R$,$ C $>=0$