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Consider the simplified road map of Romania found in Figure 3 . 2 . Substitute the first letter of the city name to represent each

Consider the simplified road map of Romania found in Figure 3.2. Substitute the first letter of the city name to represent each node (e.g.,A for Arad).
a) Suppose you are at Sibiu. Draw the search tree, limited to depth 4, that would be generated using an explored set. Expand nodes counter-clockwise starting from the Western-most neighbor, placing the expanded nodes in the search tree from left to right. How many nodes are in the tree?
b) Suppose you wish to find a path from Sibiu to Drobeta. List the order of the nodes that would be explored for depth-first and breadth-first search using the tree from part (a). Assume that, within a layer, nodes are explored left to right. How many nodes are explored for each? Which algorithm finds the goal faster?
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