USACO 2005 U S Open Gold - 题库 - CZOJ

	ID	题目显示标签隐藏标签	AC / 尝试	难度
	1431	P2430 Lazy Cows USACO 2005 U S Open Gold	0 / 0	暂无评定
	1432	P2431 Expedition USACO 2005 U S Open Gold	0 / 0	暂无评定
	1433	P2432 Around the world USACO 2005 U S Open Gold	0 / 0	暂无评定
	1434	P2433 Landscaping USACO 2005 U S Open Gold	0 / 0	暂无评定

根据当前过滤条件随机选择一道题