In this paper, the minimum sufficient set problem in bi-directed networks is studied.
研究在双向网络中的最小充分集问题，并把他转化为最小顶点覆盖问题。
A match is sufficient to set ablaze the lumber yard or the oil depot.
要使木材堆放处或石油储存库燃烧，一根火柴就够了。
A match is sufficient to set ablaze the lumber yard or the oil depot.
要使木材堆放处或石油储存库燃烧，一根火柴就够了。
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