ID	题目显示标签隐藏标签	AC / 尝试	难度
211	USACO522 Electric Fences USACO	0 / 0	(无)
212	USACO523 Wisconsin Squares USACO	0 / 1	10
213	USACO531 Milk Measuring USACO	0 / 0	(无)
214	USACO532 Window Area USACO	0 / 0	(无)
215	USACO533 Network of Schools USACO	0 / 0	(无)
216	USACO534 Big Barn USACO	0 / 0	(无)
217	USACO541 All Latin Squares USACO	0 / 0	(无)
218	USACO542 Canada Tour USACO	0 / 0	(无)
219	USACO543 Character Recognition USACO	0 / 0	(无)
220	USACO544 Betsy's Tour USACO	0 / 0	(无)
221	USACO545 Telecowmunication USACO	0 / 0	(无)
222	USACO551 Picture USACO	0 / 0	(无)
223	USACO552 Hidden Password USACO	0 / 6	10
224	USACO553 Towfive USACO	0 / 0	(无)
225	USACO611 Postal Vans USACO	0 / 0	(无)
226	USACO612 A Rectangular Barn USACO	0 / 1	10
227	USACO613 Cow XOR USACO	0 / 1	10
961	X1000 小杨的计算器	9 / 104	3

根据当前过滤条件随机选择一道题

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