Problem A
Farey Sequence Length — Problem Statistics

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Submissions	1758
Accepted submissions	857
Submission ratio	48.75%
Authors	668
Accepted authors	594
Author ratio	88.92%

#	User	Runtime	Language	Date
1	Eyleifur Bjarkason	0.00 s	C	2019-03-19 00:48:14
2	Davíð Helgason	0.00 s	C	2020-03-09 18:23:10
3	Hidden user	0.00 s	C	2025-06-01 13:23:26
4	Sam Leadi	0.01 s	C	2017-04-18 15:45:15
5	Pablo Rivas Perea	0.01 s	C	2017-11-25 00:22:20
6	Ayoub Chegraoui	0.01 s	C	2018-03-11 20:00:40
7	Ivan Petrov	0.01 s	C	2019-07-29 16:04:23
8	Oscar Cusin	0.01 s	C	2024-05-13 12:27:45
9	Bergur Snorrason	0.03 s	C	2019-03-12 09:00:44
10	Rabbani Islam Refat	0.03 s	C	2024-02-15 12:08:24

#	User	Runtime	Language	Date
1	Michael Damsgaard	0.08 s	C#	2025-01-12 14:54:37

#	User	Runtime	Language	Date
1	Hidden user	0.10 s	Go	2019-05-13 14:51:02
2	Norbert Voelker	0.11 s	Go	2022-02-02 00:39:17

#	User	Runtime	Language	Date
1	Linus Eklund	0.03 s	Haskell	2016-12-31 02:45:01

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.09 s	Java	2023-12-02 18:11:25
2	Hidden user	0.10 s	Java	2018-02-03 15:09:36
3	Martijn Muijsers	0.12 s	Java	2017-03-05 03:03:55
4	Felix De Silva	0.12 s	Java	2017-12-14 20:41:01
5	Brent Yorgey	0.12 s	Java	2017-12-21 23:08:10
6	Sam Reinehr	0.12 s	Java	2018-01-18 07:47:49
7	Lizhong Wang	0.12 s	Java	2018-04-17 14:58:56
8	Felix Grape	0.14 s	Java	2016-12-08 17:21:55
9	Liam Keliher	0.14 s	Java	2017-04-10 03:39:04
10	Ranjith M	0.15 s	Java	2025-05-29 03:19:47

#	User	Runtime	Language	Date
1	Hassan Mango	0.16 s	JavaScript (Node.js)	2024-03-30 07:27:47

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2017-01-23 03:48:37
2	Christian Cederquist	0.20 s	JavaScript (SpiderMonkey)	2023-08-02 17:06:08

#	User	Runtime	Language	Date
1	Jacob Huebner	0.32 s	Kotlin	2020-02-29 00:35:08
2	Ali M. Nekoh	0.38 s	Kotlin	2025-05-08 21:50:49
3	Jesper Bech Christensen	0.44 s	Kotlin	2024-09-17 15:26:34
4	Phường Lên	0.56 s	Kotlin	2020-02-26 18:51:06
5	Adam Koprowski	0.62 s	Kotlin	2021-05-04 21:15:25
6	Hidden user	0.76 s	Kotlin	2019-11-06 00:56:51

#	User	Runtime	Language	Date
1	Erik K	0.16 s	OCaml	2020-10-30 09:26:00

#	User	Runtime	Language	Date
1	Ocram Esah	0.05 s	Python 2	2022-04-25 21:34:28
2	Hermon Mulat	0.06 s	Python 2	2016-12-23 07:00:23
3	oleole	0.07 s	Python 2	2018-09-01 15:12:07
4	Hidden user	0.09 s	Python 2	2019-05-09 01:03:30
5	Haochen Chen	0.10 s	Python 2	2016-10-16 20:41:25
6	Johan Lyts	0.10 s	Python 2	2020-02-20 21:27:05
7	Fan Zhang	0.12 s	Python 2	2018-04-16 10:16:34
8	Oskar Larsson	0.21 s	Python 2	2019-04-13 13:38:22

#	User	Runtime	Language	Date
1	Duoduo Zhao	0.05 s	Python 3	2025-06-30 16:12:12
2	Vincent Tandya	0.06 s	Python 3	2019-02-17 07:03:10
3	Drumil Vasani	0.06 s	Python 3	2025-05-14 22:11:21
4	Aman Choudhary	0.06 s	Python 3	2025-05-14 22:35:14
5	Lance Chao	0.07 s	Python 3	2016-10-17 00:40:05
6	Eric Williamson	0.07 s	Python 3	2016-10-17 04:06:11
7	oleole	0.07 s	Python 3	2018-09-01 18:47:22
8	Hidden user	0.07 s	Python 3	2018-09-01 20:18:46
9	Breki Palsson	0.07 s	Python 3	2019-03-14 19:55:27
10	Kristoffer Åhgren	0.07 s	Python 3	2019-05-10 20:57:29

#	User	Runtime	Language	Date
1	Thomas Feld	0.22 s	Ruby	2025-07-18 10:41:35

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-05-08 12:50:51
2	Emil Hultcrantz	0.00 s	Rust	2025-05-15 12:16:14
3	Hidden user	0.01 s	Rust	2019-05-11 16:20:48
4	Muhammad Rais Fathin Mudzakir	0.01 s	Rust	2021-07-05 01:51:45
5	Gustaf Bergmark	0.01 s	Rust	2023-05-10 21:35:29
6	Hidden user	0.02 s	Rust	2019-05-11 11:26:06
7	Davíð Helgason	0.02 s	Rust	2020-03-09 17:59:19
8	Christoffer Andersson	0.02 s	Rust	2024-05-09 16:18:50
9	Christian Cotignola	0.02 s	Rust	2024-09-10 20:19:40
10	Bas Dirks	0.07 s	Rust	2022-02-20 13:27:19

#	User	Length	Language	Date
1	Hidden user	560	C	2025-06-01 13:23:26
2	Ayoub Chegraoui	613	C	2018-03-11 20:00:40
3	Rabbani Islam Refat	854	C	2024-02-15 12:08:24
4	Sambit Palit	1561	C	2020-12-11 19:37:13
5	Bergur Snorrason	2367	C	2019-03-12 09:00:44
6	Ivan Petrov	2549	C	2019-07-29 16:04:23
7	Oscar Cusin	2872	C	2024-05-13 12:27:45
8	Sam Leadi	3050	C	2017-04-18 15:45:15
9	Pablo Rivas Perea	3164	C	2017-11-25 00:22:20
10	Eyleifur Bjarkason	5324	C	2019-03-19 00:55:33

#	User	Length	Language	Date
1	Michael Damsgaard	1315	C#	2025-01-12 14:56:03

#	User	Length	Language	Date
1	Guk Yi Siong	283	C++	2023-06-17 09:06:20
2	SiBi	371	C++	2018-12-03 12:57:15
3	Hidden user	403	C++	2020-12-03 00:39:24
4	Hidden user	445	C++	2024-11-01 14:52:27
5	Zac Friggstad	469	C++	2021-02-25 15:35:34
6	Ngân Trúc	471	C++	2019-12-03 05:30:24
7	Tấn Phát Trần	473	C++	2019-03-19 14:49:51
8	Austin Fernandez	485	C++	2019-09-14 16:04:47
9	Jon Runar	485	C++	2019-03-20 02:20:16
10	Jiacheng Wu	500	C++	2022-02-25 06:17:26

#	User	Length	Language	Date
1	Norbert Voelker	882	Go	2022-02-02 00:39:17
2	Hidden user	1157	Go	2019-05-13 14:51:02

#	User	Length	Language	Date
1	Linus Eklund	1195	Haskell	2016-12-31 00:32:54

#	User	Length	Language	Date
1	Jiru Xu	685	Java	2016-10-28 11:58:03
2	Ali Pervaiz	804	Java	2019-04-09 21:44:06
3	Andri Mar	861	Java	2020-03-16 00:29:47
4	Matthew Das Sarma	889	Java	2016-10-16 21:29:07
5	Sam Reinehr	918	Java	2018-01-18 07:47:49
6	Doug Goodman	957	Java	2017-06-14 19:35:32
7	Hidden user	1023	Java	2016-10-24 00:06:31
8	Michael LeKander	1031	Java	2016-10-16 19:50:17
9	Hidden user	1091	Java	2018-01-18 07:43:31
10	Martin Wan	1104	Java	2017-07-19 02:09:22

#	User	Length	Language	Date
1	Hassan Mango	894	JavaScript (Node.js)	2024-03-30 07:27:47

#	User	Length	Language	Date
1	Christian Cederquist	497	JavaScript (SpiderMonkey)	2023-08-02 17:06:08
2	Bjørn Chr. Soltvedt	81763	JavaScript (SpiderMonkey)	2017-01-23 03:48:37

#	User	Length	Language	Date
1	Jesper Bech Christensen	478	Kotlin	2024-09-17 15:26:34
2	Hidden user	628	Kotlin	2019-11-06 00:56:51
3	Phường Lên	1043	Kotlin	2020-02-26 18:51:06
4	Ali M. Nekoh	1145	Kotlin	2025-05-08 21:50:49
5	Jacob Huebner	1408	Kotlin	2020-02-29 00:35:08
6	Adam Koprowski	9738	Kotlin	2021-05-04 21:15:25

#	User	Length	Language	Date
1	Erik K	2328	OCaml	2020-10-30 09:34:25

#	User	Length	Language	Date
1	Johan Lyts	275	Python 2	2020-02-20 21:27:05
2	Fan Zhang	742	Python 2	2018-04-16 10:16:34
3	Oskar Larsson	781	Python 2	2019-04-13 13:38:22
4	Haochen Chen	1026	Python 2	2016-10-16 20:41:25
5	Ocram Esah	1321	Python 2	2022-04-25 21:34:28
6	oleole	1692	Python 2	2018-09-01 15:12:07
7	Hermon Mulat	1699	Python 2	2016-12-23 07:00:23
8	Hidden user	58648	Python 2	2019-05-09 01:03:30

#	User	Length	Language	Date
1	Benjamin Z White	215	Python 3	2023-06-17 19:12:23
2	Victor Song	287	Python 3	2022-05-20 22:35:30
3	Guk Yi Siong	288	Python 3	2023-06-17 08:00:33
4	Bjørn Dons	347	Python 3	2023-05-12 22:31:06
5	Hidden user	372	Python 3	2023-10-14 03:40:21
6	Oskar Haarklou Veileborg	372	Python 3	2020-05-01 20:08:35
7	Hrant Hovhannisyan	393	Python 3	2025-04-17 08:17:07
8	Rida Grif	422	Python 3	2021-12-29 15:52:44
9	Szu-Chi Huang	467	Python 3	2023-05-04 13:56:22
10	Andreas Björklund	497	Python 3	2024-04-25 19:55:04

#	User	Length	Language	Date
1	Thomas Feld	136	Ruby	2025-07-18 10:42:54

#	User	Length	Language	Date
1	Christoffer Andersson	847	Rust	2024-05-09 16:18:50
2	Bas Dirks	913	Rust	2022-02-20 13:27:19
3	Emil Hultcrantz	1047	Rust	2025-05-15 12:16:14
4	Christian Cotignola	1543	Rust	2024-09-10 20:19:40
5	Muhammad Rais Fathin Mudzakir	4214	Rust	2021-07-05 01:51:45
6	Gustaf Bergmark	4286	Rust	2023-05-10 21:35:29
7	Hidden user	8739	Rust	2019-05-11 16:14:12
8	Vincent Lagerros	10351	Rust	2024-05-08 12:50:51
9	Hidden user	11375	Rust	2019-05-11 11:14:11
10	Davíð Helgason	97419	Rust	2020-03-09 18:17:49

Solution running time distribution