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Query on a tree II statistics & best solutions

Users accepted	Submissions	Accepted	Wrong Answer	Compile Error	Runtime Error	Time Limit Exceeded
4372	32888	6805	10822	1503	5350	4222

RANK	DATE	USER	RESULT	TIME	MEM	LANG
1	2012-11-03 18:31:00	Nic Roets	accepted	0.00	3.3M	C++ 4.3.2
2	2012-02-21 10:42:29	wwwwodddd	accepted	0.01	13M	C++ 4.3.2
3	2012-02-21 10:43:27	wwwwodddd	accepted	0.01	14M	CPP
4	2017-09-17 11:31:08	Min_25	accepted	0.01	15M	CPP14
5	2017-12-26 12:16:10	H1KHC	accepted	0.01	18M	CPP
6	2018-03-07 12:34:35	creeperlkf	accepted	0.01	64M	CPP14
7	2007-08-07 06:30:43	Bin Jin	accepted	0.02	4.6M	CPP
8	2009-03-30 01:25:14	Eigenray	accepted	0.02	4.0M	C
9	2009-07-15 12:44:11	Dominik Kempa	accepted	0.02	4.4M	CPP
10	2013-12-20 17:59:51	Tomislav Tunkovic	accepted	0.02	4.9M	C++ 4.3.2
11	2015-05-19 13:36:21	i_am_looser	accepted	0.02	5.3M	CPP
12	2015-07-18 18:08:46	Xsquare	accepted	0.02	4.3M	C++ 4.3.2
13	2017-02-14 21:19:23	ajecc	accepted	0.02	17M	CPP14
14	2017-03-17 21:08:41	ismail hossain	accepted	0.02	17M	CPP14
15	2017-04-12 11:26:46	MEyongheng	accepted	0.02	3.3M	C++ 4.3.2
16	2017-04-24 02:27:56	sshockwave	accepted	0.02	3.9M	C++ 4.3.2
17	2018-01-16 20:02:33	Promee	accepted	0.02	17M	CPP
18	2018-02-01 21:25:47	ohi	accepted	0.02	17M	CPP
19	2018-03-01 11:22:08	MegaOwIer	accepted	0.02	7.0M	C++ 4.3.2
20	2018-03-17 08:00:40	superguymj	accepted	0.02	17M	CPP14