题目ID	标题	来源	正确数	通过率
3920-HDU	Clear All of Them I	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3921-HDU	Clear All of Them II	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3922-HDU	Enchantress	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3923-HDU	Invoker	2011 Multi-University Training Contest 9 - Host by BJTU	1	100.0%
3924-HDU	Extend-Tree	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3925-HDU	Substring	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3926-HDU	Hand in Hand	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3927-HDU	Math Geek	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3928-HDU	Catch the Thief	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%
3929-HDU	Big Coefficients	2011 Multi-University Training Contest 9 - Host by BJTU	0	----%