Since non-accept nodes can never have edges to accept nodes and the entry cannot have any incoming nodes, we know the node is not connected to anything but itself so it is safe to keep the entry node. Keeping the entry node is required since the sketches entry node must always be available
Since non-accept nodes can never have edges to accept nodes and the entry cannot have any incoming nodes, we know the node is not connected to anything but itself so it is safe to keep the entry node. Keeping the entry node is required since the sketches entry node must always be available