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Information query of road traffic network in Lanzhou. Design a simple system that can realize the information query function of Lanzhou road traffic network. Lanzhou road traffic network using the adjacency matrix (or adjacency list) said that the road transport network including the adjacency matrix (or adjacency list) the establishment of the path (or time) of the query, the shortest path (or shortest time) search, display and output function; Lanzhou road traffic network vertices in the map, place names the said arc path exists, the arc weights that the distance between the two between the two (or time)