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Query on a tree again! statistics & best solutions

Users accepted	Submissions	Accepted	Wrong Answer	Compile Error	Runtime Error	Time Limit Exceeded
2241	10691	9311	0	480	0	0

RANK	DATE	USER	RESULT	TIME	MEM	LANG
81	2012-02-08 22:14:44	Aleksandar Ivanović	100	1.37	12M	C++ 4.3.2
82	2012-02-13 13:09:45	Freda.Rodriguez.Shi	100	0.91	69M	C++ 4.3.2
83	2012-02-15 10:45:07	Sixue Wang	100	1.03	35M	C++ 4.3.2
84	2012-02-17 06:17:14	杨文韬	100	1.39	17M	C++ 4.3.2
85	2012-02-17 15:37:42	txxxxx	100	0.92	26M	C++ 4.3.2
86	2012-02-17 23:28:41	Marko Bakovic	100	1.37	13M	C++ 4.3.2
87	2012-02-18 12:36:47	陈文潇	100	1.29	120M	C++ 4.3.2
88	2012-02-18 15:37:15	roosephu	100	1.37	22M	C++ 4.3.2
89	2012-02-19 09:17:53	查德西尔	100	1.29	42M	C++ 4.3.2
90	2012-02-20 12:09:21	梅塔特隆	100	1.29	11M	C++ 4.3.2
91	2012-02-23 07:25:27	wwwwodddd	100	1.29	11M	C++ 4.3.2
92	2012-02-23 08:14:38	lydrainbowcat	100	1.29	9.0M	C++ 4.3.2
93	2012-02-23 16:38:08	Riatre Foo	100	1.29	11M	C++ 4.3.2
94	2012-03-10 14:58:42	Eric Cipex	100	1.37	17M	C++ 4.3.2
95	2012-03-10 15:48:16	littlefriend	100	1.29	12M	C++ 4.3.2
96	2012-03-20 03:45:45	zfh	100	1.37	18M	C++ 4.3.2
97	2012-03-21 04:08:33	Wlog XC	100	1.37	37M	C++ 4.3.2
98	2012-03-21 17:17:44	Borys Dibrov	100	1.37	14M	C++ 4.3.2
99	2012-03-22 07:31:31	Leopard1	100	1.83	24M	C++ 4.3.2
100	2012-03-24 14:17:21	谢天成	100	1.50	7.8M	C++ 4.3.2