For each augmenting path you add, include a sketch $($with the value of the flow through that path$)$; the graph with the found maximum flow drawn in $($and the value of that flow$)$; from this last graph, also include the complete residual graph, so including arrows in the reverse direction if there is flow through the arrow; the points circled from the set

U

U of points that can be reached from the source

s

s in this residual graph; the arrows belonging to the cut of

U

U and their total capacity.

$3\mathrm{.}11.$

$($iv$)$