Problem A
Bracket Matching — Problem Statistics

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Submissions	2712
Accepted submissions	989
Submission ratio	36.47%
Authors	734
Accepted authors	727
Author ratio	99.05%

#	User	Runtime	Language	Date
1	Evan Luo Zi Xuan	0.08 s	Java	2025-08-20 05:25:05
2	Nguyen Hoang The Kiet	0.18 s	Java	2025-08-16 08:45:40
3	Zhang Haoxiang	0.19 s	Java	2025-08-17 17:58:29

#	User	Runtime	Language	Date
1	Wu Bozheng	0.05 s	Python 3	2022-10-19 03:50:21
2	Zhang Haoran	0.05 s	Python 3	2022-10-19 04:32:59
3	Chen Yuxuan	0.05 s	Python 3	2022-10-19 04:39:07
4	Qi Hangjiang	0.05 s	Python 3	2022-10-19 04:46:23
5	Zhao Zhiming	0.05 s	Python 3	2022-10-19 04:57:44
6	Jason Tai Chang Sheng	0.05 s	Python 3	2022-10-19 05:07:10
7	Ramanathan Vijay Ganesh	0.05 s	Python 3	2022-10-19 05:09:17
8	Tan Juntong	0.05 s	Python 3	2022-10-19 06:12:13
9	Dennis Wang Bao Rong	0.05 s	Python 3	2022-10-19 07:01:58
10	Pan Boyi	0.05 s	Python 3	2022-10-19 07:04:18

#	User	Length	Language	Date
1	poopoo peepee	415	C++	2022-04-11 11:21:22
2	Hong Xingwen	454	C++	2022-09-13 05:57:30
3	cp joker	499	C++	2022-04-11 11:22:08
4	Zhu Jingxi	509	C++	2022-09-07 04:49:47
5	Bui Phuong Nam	532	C++	2022-09-12 19:16:03
6	Caleb Chan Jia Le	534	C++	2022-09-13 09:31:43
7	Meow	617	C++	2022-04-11 11:48:52
8	Deepanjali Dhawan	643	C++	2022-10-26 20:52:39
9	Hidden user	645	C++	2022-09-03 09:02:51
10	Kim Tae Won	659	C++	2022-09-13 12:21:16

#	User	Length	Language	Date
1	Zhang Haoxiang	1275	Java	2025-08-17 17:58:29
2	Nguyen Hoang The Kiet	1407	Java	2025-08-16 08:45:40
3	Evan Luo Zi Xuan	1428	Java	2025-08-20 05:30:42

#	User	Length	Language	Date
1	Hidden user	136	Python 3	2022-10-23 00:31:03
2	Hidden user	136	Python 3	2022-10-23 18:27:47
3	Steven Halim	210	Python 3	2022-09-08 14:54:25
4	HanLi	255	Python 3	2023-10-18 04:40:22
5	Pan Boyi	274	Python 3	2022-10-19 17:03:40
6	FU ZIHANG	281	Python 3	2023-10-18 04:48:03
7	LIN TONG	289	Python 3	2023-10-20 13:22:38
8	Ziyan Zhang	290	Python 3	2022-10-19 10:51:07
9	Nicholas Russell Saerang	290	Python 3	2022-11-23 17:42:09
10	Gao Shengke	292	Python 3	2023-03-21 14:52:59

Solution running time distribution