Almost every day you face a problem: You must leave your home and go to school.If you are like me, you are usually a little late, so you want to take the shortest route. How do you find such a route? Figure 2.1.1 models one such situation. Suppose vertex hrepresents your home, vertex s represents school and the other vertices represent intersections of the roads between home and school. Each edge represents a road and islabeled with its length (distance)
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