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Count on a tree II statistics & best solutions

Users accepted	Submissions	Accepted	Wrong Answer	Compile Error	Runtime Error	Time Limit Exceeded
2804	27634	5250	5626	1104	3033	4858

RANK	DATE	USER	RESULT	TIME	MEM	LANG
1	2020-01-18 15:46:02	mimi	accepted	0.82	11M	CPP14
2	2020-05-10 14:17:33	蒟蒻wjr	accepted	0.95	9.9M	CPP14
3	2018-03-13 13:45:00	centaurus99	accepted	0.97	26M	CPP
4	2022-03-29 15:15:00	LXl491214	accepted	0.97	12M	CPP14
5	2018-09-11 14:41:45	Memory_of_winter	accepted	0.98	87M	CPP14
6	2021-04-04 08:31:57	Gary	accepted	1.01	10M	CPP14
7	2018-12-02 15:09:34	yzh666	accepted	1.02	7.9M	C++ 4.3.2
8	2017-09-04 13:29:29	heaplax	accepted	1.03	24M	CPP
9	2019-10-23 10:38:56	hby	accepted	1.03	10M	CPP14
10	2020-11-26 02:29:13	Froggy	accepted	1.05	9.9M	CPP14
11	2019-10-04 10:06:40	M_sea	accepted	1.06	7.1M	C++ 4.3.2
12	2019-10-16 15:02:34	có cl ý ._.	accepted	1.08	14M	CPP14
13	2022-02-04 10:48:54	AstatineAi	accepted	1.08	9.7M	CPP14
14	2021-08-29 11:05:53	chameleon216	accepted	1.09	13M	C++ 4.3.2
15	2023-07-27 15:09:30	_maojun_	accepted	1.09	11M	CPP14
16	2021-05-24 15:25:16	zythonc	accepted	1.11	31M	CPP14
17	2024-03-13 15:22:51	ShiRoZeTsu	accepted	1.11	9.7M	CPP14
18	2024-04-06 09:47:56	weiyi0123	accepted	1.11	10M	CPP14
19	2017-01-21 13:43:42	Ignatz	accepted	1.12	8.7M	C++ 4.3.2
20	2021-02-04 15:11:47	卢安来	accepted	1.12	11M	CPP14