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A group of N people wishes to go across a river with only one boat, which can at most carry two persons. Therefore some sort of shuttle arrangement mu

最短路径问题是经典图论问题之一。从工程意义上讲,最短路径问题是对大量工程问题的直观抽象。 最典型的例子是在地图上寻找最短驾车路径。