Problem A
Set operations — Problem Statistics

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Submissions	1427
Accepted submissions	361
Submission ratio	25.30%
Authors	244
Full solves [?]	242
Full solve Ratio	99.18%

#	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
4	Habiba El Yousfi	0.00 s	C	2026-01-26 06:14:37

#	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	Sam Choi	0.24 s	Java	2026-01-24 22:08:55
7	Shavon Turner	0.25 s	Java	2024-04-17 05:50:59
8	Aaron L Carney	0.25 s	Java	2024-09-03 06:02:43
9	Joshua Wester	0.25 s	Java	2025-01-14 04:46:40
10	Damir Anteljevic	0.25 s	Java	2025-04-06 06:38:41

#	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	Oliver Liu	0.05 s	Python 3	2026-01-27 01:01:29

#	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	Habiba El Yousfi	2887	C	2026-01-26 06:14:37
3	Mark Westbrook	2950	C	2022-01-17 15:13:04
4	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	Joseph Torres	1051	C++	2026-01-17 20:18:28
8	Kuanysh Zhunussov	1080	C++	2016-08-25 07:24:29
9	Isaac Marsh	1128	C++	2024-09-02 22:38:10
10	Matt Kendzior	1132	C++	2017-08-24 16:55:09

#	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 04:05:28
2	Hidden user	1172	Java	2026-01-27 03:53:56
3	Khifayat Abolurin	1215	Java	2025-01-14 06:16:52
4	Muhammad Ashfakur Rahman Arju	1286	Java	2022-08-30 02:38:20
5	Will henderson	1296	Java	2024-08-29 17:44:51
6	Sam Choi	1349	Java	2026-01-24 22:08:55
7	Jackson Whiteley	1532	Java	2023-01-14 21:25:54
8	Matt Harrison	1612	Java	2024-08-31 06:27:03
9	Alejandro Medina	1653	Java	2024-09-02 01:44:56
10	Ben Heil	1688	Java	2016-08-26 00:19:30

#	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	Joseph Torres	524	Python 3	2026-01-19 01:22:41
5	Andrew Hamara	554	Python 3	2025-08-28 20:46:10
6	Misty	600	Python 3	2024-08-31 22:22:51
7	Yanghe Yan	665	Python 3	2025-09-02 05:45:58
8	Bryant Huang	682	Python 3	2024-09-02 05:37:52
9	Wesley David Anastasi	705	Python 3	2026-01-26 06:58:41
10	Oliver Liu	716	Python 3	2026-01-27 01:01:29

#	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	12802	Rust	2021-01-14 04:01:44

Solution running time distribution