最小顶点覆盖 - Problem Set

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	3678	3678 [Usaco2005 jan]Muddy Fields 泥泞的牧场最小割最小顶点覆盖	0 / 0	(None)
	3698	3698 [Usaco2005 nov]Asteroids 穿越小行星群最小割最小顶点覆盖	0 / 0	(None)

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