The worksheet is given the name of the problem and a number of ranges are also labeled with the name as a prefix, so the problem name cannot be changed once the form is constructed. Although the Feasibility cells H4 and H5 are included in the form, they play no role for the tree problems. Figure 1 — Network Diagram for Example 1. The measure matrix is deleted upon completion. For symmetric lengths, Prim's algorithm finds the optimum for the minimal spanning tree problem, so there is no point on going further on this example.
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