USACO Training - Problem Set - HFOJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	26	26 「一本通 1.3 练习 3」质数方阵搜索 USACO Training	4 / 19	9
	29	29 「一本通 1.4 例 2」魔板搜索 USACO Training	6 / 20	8

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