Resturant A has a sign listing distances from various cities to Famous Bar B. One naturally wonders where this elite establishment is located. (Can you think of a quick way to find out?)

For this problem you are to consider a graph-theoretic version of this task. You are given an undirected graph G with nonnegative distances on the edges. You are also given a set S of vertices, and for each v ∈ S, the shortest distance from v to some fixed, but unknown, vertex w.

Design and analyze an algorithm that will efficiently find w. If w is not unique you should return all eligible w.

Subject | Computer |

Due By (Pacific Time) | 04/19/2015 12:00 am |

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