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Tree and Palindrome statistics & best solutions

Users accepted	Submissions	Accepted	Wrong Answer	Compile Error	Runtime Error	Time Limit Exceeded
148	1146	239	407	86	191	205

RANK	DATE	USER	RESULT	TIME	MEM	LANG
1	2018-11-28 13:46:41	mayijun	accepted	0.05	17M	CPP14
2	2018-12-06 07:54:17	King	accepted	0.06	18M	CPP
3	2014-01-03 15:32:36	Sakibul Mowla	accepted	0.07	7.1M	C++ 4.3.2
4	2014-03-16 08:49:50	Tjandra Satria Gunawan	accepted	0.07	25M	C
5	2017-08-14 15:18:09	Ahmad Haulian Yoga Pratama	accepted	0.07	29M	CPP14
6	2017-11-23 15:00:15	szwl	accepted	0.07	5.3M	C++ 4.3.2
7	2018-11-28 11:42:16	wch19990119	accepted	0.07	6.5M	C++ 4.3.2
8	2018-12-03 07:47:12	qjh	accepted	0.07	21M	CPP14
9	2018-12-04 09:57:52	jqz	accepted	0.07	6.5M	C++ 4.3.2
10	2014-01-02 04:14:48	Agus Sentosa Hermawan	accepted	0.08	7.2M	C++ 4.3.2
11	2014-01-03 00:27:45	Rully Soelaiman	accepted	0.08	7.7M	CPP
12	2015-07-03 22:31:41	Rishav Goyal	accepted	0.08	7.1M	C++ 4.3.2
13	2016-11-10 11:34:06	hedongn1	accepted	0.08	5.5M	C++ 4.3.2
14	2014-01-01 23:00:33	SourSpinach	accepted	0.09	6.8M	C++ 4.3.2
15	2017-11-23 14:13:22	zhengzhuorui	accepted	0.09	26M	C++ 4.3.2
16	2017-11-26 08:53:51	Iris	accepted	0.09	16M	CPP
17	2016-11-10 08:52:50	Peng Wang	accepted	0.10	6.5M	CPP
18	2017-11-26 08:38:49	Xinyu Zhang	accepted	0.10	3.4M	C++ 4.3.2
19	2018-11-28 16:19:05	ZMiG	accepted	0.10	18M	CPP14
20	2021-11-09 07:47:18	psz2007	accepted	0.10	16M	CPP14