Problem A
Set operations — Problem Statistics

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Submissions	1289
Accepted submissions	324
Submission ratio	25.14%
Authors	211
Accepted authors	209
Author ratio	99.05%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2021-08-31 04:32:24
2	Mark Westbrook	0.00 s	C	2022-01-17 15:13:04
3	Joshua Wellman	0.00 s	C	2023-01-13 03:15:45

#	User	Runtime	Language	Date
1	Michael Crowther	0.07 s	C#	2023-01-14 01:18:37
2	Jake Formico	0.21 s	C#	2023-03-07 00:33:49

#	User	Runtime	Language	Date
1	Rex Isaac Raphael	0.02 s	Go	2024-01-09 17:30:19
2	Christina Zektser	0.05 s	Go	2023-01-16 15:28:33
3	Alexander Crosby	0.06 s	Go	2023-01-18 06:51:51
4	Joseph Huang	0.11 s	Go	2016-08-27 19:30:09

#	User	Runtime	Language	Date
1	Mark Josephs	0.07 s	Java	2025-09-02 02:59:26
2	Melody Horn	0.11 s	Java	2018-08-22 05:57:17
3	Jan Svacina	0.17 s	Java	2018-08-25 21:28:44
4	Suresh Karki	0.21 s	Java	2018-08-28 00:37:31
5	Will henderson	0.23 s	Java	2024-08-29 17:44:51
6	Shavon Turner	0.25 s	Java	2024-04-17 05:50:59
7	Aaron L Carney	0.25 s	Java	2024-09-03 06:02:43
8	Joshua Wester	0.25 s	Java	2025-01-14 04:46:40
9	Damir Anteljevic	0.25 s	Java	2025-04-06 06:38:41
10	Tanvir Ahmed Redoy	0.25 s	Java	2025-09-01 00:36:38

#	User	Runtime	Language	Date
1	Andrew Molina	0.06 s	JavaScript (Node.js)	2024-01-15 05:01:25

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (SpiderMonkey)	2016-08-30 06:52:19

#	User	Runtime	Language	Date
1	Chinagorom Mbaraonye	0.03 s	Python 3	2019-12-15 06:22:44
2	Melody Horn	0.04 s	Python 3	2017-08-26 03:20:11
3	Maryam Samami	0.04 s	Python 3	2025-09-02 05:50:47
4	Asif Imtiaz Shaafi	0.05 s	Python 3	2024-08-28 08:08:52
5	Abanisenioluwa Kolawole Orojo	0.05 s	Python 3	2024-08-29 20:49:28
6	Misty	0.05 s	Python 3	2024-08-31 22:22:51
7	Ana Paula Arguelles Terron	0.05 s	Python 3	2024-09-02 01:10:25
8	Kofi Nketia Ackaah-Gyasi	0.05 s	Python 3	2024-09-02 07:08:27
9	Tim Klimpel	0.05 s	Python 3	2025-01-14 02:13:42
10	Jacoby Johnson	0.06 s	Python 3	2023-01-17 07:06:10

#	User	Runtime	Language	Date
1	Alan Jacob Mannamplackal	0.08 s	Python 3 with NumPy	2023-01-16 23:16:34

#	User	Runtime	Language	Date
1	Michael Volling	0.02 s	Rust	2021-01-14 04:01:44

#	User	Length	Language	Date
1	Hidden user	2817	C	2021-08-31 04:32:24
2	Mark Westbrook	2950	C	2022-01-17 15:13:04
3	Joshua Wellman	7631	C	2023-01-13 03:15:45

#	User	Length	Language	Date
1	Michael Crowther	4637	C#	2023-01-14 01:18:37
2	Jake Formico	5131	C#	2023-03-07 00:33:49

#	User	Length	Language	Date
1	Collin Rapp	630	C++	2016-08-30 11:54:07
2	Korn Sooksatra	859	C++	2020-08-26 08:30:24
3	Greg Walkup	923	C++	2016-08-26 04:08:38
4	Zach Taylor	971	C++	2025-09-02 01:56:05
5	Joseph Zuniga	1012	C++	2025-09-02 02:35:11
6	Jeremy	1035	C++	2025-08-26 15:34:31
7	Kuanysh Zhunussov	1080	C++	2016-08-25 07:26:59
8	Isaac Marsh	1128	C++	2024-09-02 22:38:10
9	Matt Kendzior	1132	C++	2017-08-24 16:55:09
10	John Abraham	1161	C++	2018-08-31 07:48:56

#	User	Length	Language	Date
1	Christina Zektser	1356	Go	2023-01-16 15:28:33
2	Alexander Crosby	1857	Go	2023-01-18 06:51:51
3	Joseph Huang	2041	Go	2016-08-27 19:30:09
4	Rex Isaac Raphael	4281	Go	2024-01-09 17:30:19

#	User	Length	Language	Date
1	Robert Cepa	1023	Java	2016-08-28 05:04:08
2	Khifayat Abolurin	1215	Java	2025-01-14 06:16:52
3	Muhammad Ashfakur Rahman Arju	1286	Java	2022-08-30 02:38:20
4	Will henderson	1296	Java	2024-08-29 17:44:51
5	Jackson Whiteley	1532	Java	2023-01-14 21:25:54
6	Matt Harrison	1612	Java	2024-08-31 06:27:03
7	Alejandro Medina	1653	Java	2024-09-02 01:44:56
8	Ben Heil	1688	Java	2016-08-26 00:19:30
9	Alibek Zhakubayev	1695	Java	2020-08-29 23:23:23
10	Jonathan Myers	1728	Java	2017-08-29 00:32:15

#	User	Length	Language	Date
1	Andrew Molina	1567	JavaScript (Node.js)	2024-01-15 05:01:25

#	User	Length	Language	Date
1	Hidden user	1269	JavaScript (SpiderMonkey)	2016-08-30 06:52:19

#	User	Length	Language	Date
1	Melody Horn	306	Python 3	2017-08-26 03:20:11
2	Alibek Zhakubayev	371	Python 3	2020-08-29 22:49:14
3	Chinagorom Mbaraonye	462	Python 3	2019-12-15 06:22:44
4	Andrew Hamara	554	Python 3	2025-08-28 20:46:10
5	Misty	600	Python 3	2024-08-31 22:22:51
6	Yanghe Yan	665	Python 3	2025-09-02 05:45:58
7	Bryant Huang	682	Python 3	2024-09-02 05:37:52
8	Asif Imtiaz Shaafi	729	Python 3	2024-08-28 08:08:52
9	Thor Landstrom	749	Python 3	2024-01-10 21:39:19
10	Abanisenioluwa Kolawole Orojo	779	Python 3	2024-08-26 21:45:48

#	User	Length	Language	Date
1	Alan Jacob Mannamplackal	409	Python 3 with NumPy	2023-01-16 23:16:34

#	User	Length	Language	Date
1	Michael Volling	12786	Rust	2021-01-14 04:01:44

Solution running time distribution