An example of a small network flow input.
Format
A list containing 5 elements. This 32 node graph contains 274 edges/arcs. This information is encoded in the first four elements of the list.
startnodesandendnodescontains the start and end node for each edge/arc.arccostsandarcapacitycontain the cost and capacity of each edge/arc.nodedemandcontains the demand for each of the 32 nodes.
