题库 - 2019 - HydroOJ

	ID	题目显示标签隐藏标签	AC / 尝试	难度
	1863	CSPJ2019A 数字游戏 (Number Games) CSP-J 2019 price::50 source::ccf	4 / 8	10
	1864	CSPJ2019B 公交换乘 (Bus Transfer) CSP-J 2019 price::50 source::ccf	2 / 18	9
	1865	CSPJ2019C 纪念品 (Souvenir) CSP-J 2019 price::50 source::ccf	2 / 6	10
	1866	CSPJ2019D 零件加工 (Parts Processing) CSP-J 2019 price::50 source::ccf	1 / 6	10
	1862	CSPS2019A 格雷码 (Gray Code) CSP-S 2019 price::50 source::ccf	0 / 0	(无)
	1846	CSPS2019B 括号树 (Bracket Tree) CSP-S 2019 price::50 source::ccf	1 / 60	10
	1847	CSPS2019C 树上的数 (Numbers on the Tree) CSP-S 2019 price::50 source::ccf	0 / 0	(无)
	1848	CSPS2019D Emiya 家今天的饭 CSP-S 2019 price::50 source::ccf	0 / 0	(无)
	1849	CSPS2019E 划分 CSP-S 2019 price::50 source::ccf	0 / 0	(无)
	1850	CSPS2019F 树的重心 CSP-S 2019 price::50 source::ccf	0 / 0	(无)
	1688	USACOC1911A 重新分区 2019 USACO 铂金组省选 price::50 source::USACO	0 / 0	(无)
	1689	USACOC1911B 晨跑路线 2019 USACO 铂金组省选 price::50 source::USACO	0 / 0	(无)
	1690	USACOC1911C 列车追踪 2019 USACO 铂金组省选 price::50 source::USACO	0 / 0	(无)
	1692	USACOC1912A Cow Poetry 2019 USACO 黄金组提高 price::50 source::USACO	0 / 0	(无)
	1693	USACOC1912B Sleepy Cow Sorting 2019 USACO 黄金组提高 price::50 source::USACO	0 / 0	(无)
	1694	USACOC1912C ShortCut 2019 USACO 黄金组提高 price::50 source::USACO	0 / 0	(无)
	1696	USACOC1921A Cow Dating 2019 USACO 铂金组省选 price::50 source::USACO	0 / 0	(无)
	1697	USACOC1921B Moorio Kart 2019 USACO 铂金组省选 price::50 source::USACO	0 / 0	(无)

根据当前过滤条件随机选择一道题