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In this tutorial, we will be solving the problem of reconstructing an itinerary using a list of airline tickets, which are essentially graph edges connecting source and destination nodes representing airports/cities. To reconstruct the itinerary, we need a good understanding of graphs and graph traversals, particularly DFS. The starting point will always be JFK, as all tickets belong to someone who departed from there. By analyzing the list of tickets, we can reconstruct the flight history of the person.
