Instructions:
Left-click on intersections to add positive vertices to the graph.
Right-click to add a negative(anti) vertex.
Click either button on an existing vertex to remove it.
Left-drag the mouse from one vertex to another to add an edge.
Right-drag the mouse for a negative edge.
Negative and positive edges can co-exist between the same two points.
Positive is black and negative is red.
An empty box signifies an empty or "needy" vertex - such a vertex must be connected
to an edge in order for a configuration to be considered a match
Running time = infinite