Problem A
Proving Equivalences — Problem Statistics

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Submissions	6556
Accepted submissions	1523
Submission ratio	23.23%
Authors	1171
Full solves [?]	960
Full solve Ratio	81.98%

#	User	Runtime	Language	Date
1	Mirel Cosulschi	0.03 s	C	2025-05-29 12:38:46
2	Marcus Larsson	0.08 s	C	2013-03-07 06:53:08
3	Ivan Petrov	0.10 s	C	2019-06-28 12:07:18
4	Oscar Cusin	0.20 s	C	2024-02-27 17:25:44

#	User	Runtime	Language	Date
1	Aravindan Kulandaivelu	0.40 s	C#	2017-06-12 10:36:33

#	User	Runtime	Language	Date
1	Ashley Khoo	0.02 s	C++	2019-08-10 19:39:27
2	SiBi	0.03 s	C++	2019-05-30 10:04:12
3	Brandon Zhang	0.03 s	C++	2024-01-28 09:55:42
4	Yaniel Velazquez	0.04 s	C++	2015-02-23 05:40:14
5	Daniel Taco Törbacka	0.04 s	C++	2017-05-28 08:59:19
6	Joel Au	0.04 s	C++	2020-05-30 06:40:04
7	Harrison Shen	0.04 s	C++	2020-07-16 15:05:43
8	Jiacheng Wu	0.04 s	C++	2022-02-10 01:06:58
9	Geralt of Rivia	0.04 s	C++	2022-06-17 01:37:52
10	Peter Jin	0.04 s	C++	2023-03-10 23:01:06

#	User	Runtime	Language	Date
1	Việt Hà Nguyễn	1.08 s	Go	2016-08-06 15:40:18

#	User	Runtime	Language	Date
1	David Matheu	0.16 s	Java	2026-01-27 22:12:26
2	Simon Klein	0.19 s	Java	2012-05-17 16:04:15
3	José Vander Meulen	0.21 s	Java	2018-04-16 21:08:57
4	Kol Greenbaum	0.28 s	Java	2023-03-22 22:43:25
5	Vamsi Krishna Gollapudi	0.31 s	Java	2017-12-21 10:42:05
6	William Fiset	0.31 s	Java	2020-10-07 01:02:09
7	Leon Wang	0.31 s	Java	2024-10-23 14:35:33
8	Alvin Lee	0.33 s	Java	2024-10-19 02:13:37
9	Jakob Kallestad	0.35 s	Java	2019-02-11 22:47:49
10	William Quiroga	0.36 s	Java	2018-02-06 03:32:00

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.99 s	Kotlin	2022-05-27 16:30:16
2	Jekaterina Kuštana	4.01 s	Kotlin	2018-06-28 00:38:03

#	User	Runtime	Language	Date
1	Sivasankaran D	0.89 s	Python 2	2026-02-23 01:12:53
2	Louis Ye	1.01 s	Python 2	2022-02-14 04:25:49
3	Mayur Mohite	1.04 s	Python 2	2015-04-12 16:38:57

#	User	Runtime	Language	Date
1	Qasim Khawaja	0.33 s	Python 3	2022-02-06 05:11:41
2	Hidden user	0.35 s	Python 3	2026-02-13 02:55:12
3	Steven Kusuman	0.36 s	Python 3	2026-02-16 05:11:50
4	Christopher Gou	0.39 s	Python 3	2024-10-25 02:18:17
5	Shashank Bhagwani	0.40 s	Python 3	2024-10-19 22:55:10
6	Praval Kollipara	0.42 s	Python 3	2024-10-25 19:20:46
7	Hidden user	0.43 s	Python 3	2022-10-17 00:04:43
8	Ethan	0.44 s	Python 3	2025-06-15 21:44:36
9	Jonathan Cederlund	0.48 s	Python 3	2025-02-08 09:48:53
10	Laith Bohsali	0.48 s	Python 3	2025-04-03 16:53:32

#	User	Runtime	Language	Date
1	Thomas Feld	1.22 s	Ruby	2025-11-26 12:25:09

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.02 s	Rust	2025-03-16 10:34:14
2	Giang Đào	0.06 s	Rust	2023-01-12 14:27:36
3	Muhammad Rais Fathin Mudzakir	0.07 s	Rust	2022-02-12 18:35:43
4	Herman Hallonqvist	0.07 s	Rust	2026-02-05 20:43:14
5	Christofer Nolander	0.08 s	Rust	2018-12-28 11:10:37
6	Niklas Sandén	0.08 s	Rust	2023-02-21 15:29:59
7	Julius Thunström	0.08 s	Rust	2023-02-22 19:50:19
8	Leo Jarhede	0.11 s	Rust	2025-02-24 20:04:38
9	Daniel Anker Hermansen	0.13 s	Rust	2024-10-15 07:57:01
10	Emil Hultcrantz	0.13 s	Rust	2025-02-24 21:24:15

#	User	Length	Language	Date
1	Ivan Petrov	2003	C	2019-06-28 12:07:18
2	Marcus Larsson	2161	C	2013-03-07 06:53:08
3	Mirel Cosulschi	2583	C	2025-05-29 12:37:02
4	Oscar Cusin	29664	C	2024-02-27 17:25:44

#	User	Length	Language	Date
1	Aravindan Kulandaivelu	4080	C#	2017-06-12 10:36:33

#	User	Length	Language	Date
1	Yu-Chen Chan	763	C++	2024-03-12 00:26:51
2	Pranav Krishnan	1062	C++	2024-04-04 06:48:53
3	Hidden user	1077	C++	2015-10-30 07:20:00
4	Herman Karlsson	1114	C++	2017-01-08 23:54:30
5	Asbjørn Lind	1117	C++	2024-12-05 23:37:21
6	Hidden user	1142	C++	2025-11-24 21:33:57
7	Alfredo Beaumont	1192	C++	2020-12-30 17:55:45
8	Josenildo Silva	1211	C++	2017-04-12 18:32:01
9	bekarhunmain	1245	C++	2024-07-23 15:33:49
10	Hidden user	1249	C++	2022-02-15 02:22:17

#	User	Length	Language	Date
1	Việt Hà Nguyễn	3170	Go	2016-08-07 08:55:25

#	User	Length	Language	Date
1	Kurtis Van Gent	1934	Java	2016-07-08 18:24:01
2	Doug Goodman	2113	Java	2016-07-11 14:36:34
3	Diệp Hiểu Phong	2324	Java	2016-11-09 11:05:53
4	Markus Bao	2478	Java	2026-01-07 20:18:35
5	Hidden user	2488	Java	2015-02-28 19:45:11
6	Hidden user	2514	Java	2022-05-02 04:12:36
7	Raj Niti	2544	Java	2022-04-05 01:34:13
8	Qian Lin	2550	Java	2017-06-21 16:02:45
9	Hidden user	2552	Java	2023-10-15 00:29:00
10	David Nowzari	2559	Java	2016-07-01 20:04:16

#	User	Length	Language	Date
1	Nicholas Johnson	2663	Kotlin	2022-05-27 16:30:16
2	Jekaterina Kuštana	3221	Kotlin	2018-06-28 00:38:03

#	User	Length	Language	Date
1	Sivasankaran D	1376	Python 2	2026-02-23 01:12:53
2	Louis Ye	2643	Python 2	2022-02-14 04:29:08
3	Mayur Mohite	3631	Python 2	2015-04-12 16:38:57

#	User	Length	Language	Date
1	Will Corcoran	740	Python 3	2024-10-05 22:49:42
2	Keshav Dharshan	960	Python 3	2025-04-03 18:36:39
3	Kritim	1066	Python 3	2024-01-28 10:31:20
4	Nicholas Russell Saerang	1106	Python 3	2023-07-21 20:33:48
5	Russell	1106	Python 3	2025-09-21 14:11:31
6	Jacob Molin	1269	Python 3	2025-05-29 10:36:59
7	Xiaoyang Xu	1303	Python 3	2024-10-02 00:03:02
8	Zac Friggstad	1310	Python 3	2022-01-31 03:15:42
9	John Trovato	1348	Python 3	2025-12-06 02:03:45
10	Hidden user	1460	Python 3	2025-04-06 03:02:06

#	User	Length	Language	Date
1	Thomas Feld	340	Ruby	2025-11-26 12:31:25

#	User	Length	Language	Date
1	Leo Jarhede	2923	Rust	2025-02-24 20:04:38
2	Rasmus Andersson	2962	Rust	2024-02-29 14:47:46
3	Eric Pinter	3222	Rust	2021-07-29 04:50:02
4	Eskil Queseth	3988	Rust	2020-01-15 15:23:29
5	Herman Hallonqvist	4794	Rust	2026-02-05 20:43:14
6	Christofer Nolander	4967	Rust	2018-12-28 10:35:52
7	Vincent Lagerros	5990	Rust	2024-02-26 21:04:16
8	Giang Đào	9716	Rust	2023-01-12 14:27:36
9	Muhammad Rais Fathin Mudzakir	10827	Rust	2022-02-12 18:35:02
10	Emil Hultcrantz	12929	Rust	2025-02-24 21:24:15

Solution running time distribution