Problem F
Almost Perfect — Problem Statistics

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Submissions	19619
Accepted submissions	4552
Submission ratio	23.20%
Authors	4573
Accepted authors	3689
Author ratio	80.67%

#	User	Runtime	Language	Date
1	Danny Robinson	0.12 s	Bash	2023-09-02 16:16:30

#	User	Runtime	Language	Date
1	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-06-28 21:04:22
2	Rasmus Brants	0.02 s	C#	2017-05-18 20:43:14
3	Tor Seldén	0.02 s	C#	2017-06-08 11:04:18
4	Стас Иванов	0.02 s	C#	2017-11-02 01:09:19
5	Firas Al Omary	0.02 s	C#	2018-05-13 15:40:00
6	Gustav Kalander	0.02 s	C#	2018-06-08 20:11:10
7	Robin Chandra	0.02 s	C#	2018-12-21 04:08:08
8	Apurv Parekh	0.02 s	C#	2019-03-26 16:36:05
9	Henrik Hallbert	0.02 s	C#	2019-10-30 22:14:57
10	Liam Scalzulli	0.02 s	C#	2020-04-20 06:56:25

#	User	Runtime	Language	Date
1	Thanh Dinh Ta	0.04 s	F#	2022-08-01 22:49:48
2	Jacob Harris Cryer Kragh	0.10 s	F#	2023-07-12 15:55:33

#	User	Runtime	Language	Date
1	Erik Rairden	0.02 s	Go	2021-01-24 12:40:50
2	Hidden user	0.02 s	Go	2021-01-31 10:08:11
3	Péter Szakszon	0.02 s	Go	2021-12-21 18:01:11
4	Chris Rudolph	0.03 s	Go	2018-10-14 04:55:44
5	Rifky Aditya	0.03 s	Go	2020-09-29 19:21:44
6	Mohammad Ghifari Yusuf	0.03 s	Go	2021-04-05 14:07:53
7	Krzysztof Gibuła	0.03 s	Go	2021-04-13 18:30:25
8	Bistok Diiel Lelono	0.03 s	Go	2021-04-17 20:43:27
9	farhan ramadhan	0.03 s	Go	2021-05-31 14:07:49
10	Jeri Yulfiranda	0.05 s	Go	2020-09-29 13:23:56

#	User	Runtime	Language	Date
1	Brent Yorgey	0.01 s	Haskell	2017-10-02 05:39:42
2	Birk Tjelmeland	0.01 s	Haskell	2018-10-30 17:31:30
3	Hidden user	0.01 s	Haskell	2019-01-04 03:28:58
4	Mark Saving	0.01 s	Haskell	2019-09-23 20:42:21
5	Lars Brünjes	0.01 s	Haskell	2023-02-24 22:52:09
6	Steinar Simonnes	0.01 s	Haskell	2025-05-31 19:43:05
7	Patrik Lilja	0.02 s	Haskell	2016-04-24 13:49:24
8	Antony Lee	0.02 s	Haskell	2016-12-14 15:17:31
9	Ryan Chew	0.02 s	Haskell	2017-03-11 12:48:09
10	Diego Pedraza	0.02 s	Haskell	2017-03-11 19:31:57

#	User	Runtime	Language	Date
1	Martijn Muijsers	0.06 s	Java	2016-11-11 15:34:42
2	David Brink	0.06 s	Java	2017-02-13 16:40:12
3	Hussin Suleiman	0.06 s	Java	2024-10-06 03:41:54
4	Andrew Benedict	0.06 s	Java	2024-11-08 19:52:05
5	Liam Keliher	0.07 s	Java	2016-05-08 07:37:43
6	Nguyễn Mạnh Phúc	0.07 s	Java	2016-08-03 06:43:37
7	Nguyệt Nguyễn	0.07 s	Java	2016-12-25 17:42:55
8	Samuel Klingström	0.07 s	Java	2017-07-23 18:55:59
9	James Black	0.07 s	Java	2018-03-20 15:22:33
10	Lee Wei Hong	0.07 s	Java	2018-04-16 13:51:50

#	User	Runtime	Language	Date
1	Sander Hellesø	0.07 s	JavaScript (Node.js)	2019-04-20 10:36:01
2	John Ladera	0.07 s	JavaScript (Node.js)	2019-06-13 20:20:38
3	Juthi Sarker Aka	0.07 s	JavaScript (Node.js)	2024-05-04 22:16:13
4	Amir Konjkav	0.08 s	JavaScript (Node.js)	2024-10-15 08:29:09
5	Usman	0.09 s	JavaScript (Node.js)	2024-05-07 22:55:22
6	Hassan rauf	0.10 s	JavaScript (Node.js)	2024-05-05 22:36:03
7	Nikola Stojkovski	0.12 s	JavaScript (Node.js)	2022-08-13 11:47:17
8	Stephanie Keck	0.43 s	JavaScript (Node.js)	2020-02-19 07:03:56
9	Mohammad Akbar	0.43 s	JavaScript (Node.js)	2020-10-07 12:56:16
10	Rayhan Arwindra	0.43 s	JavaScript (Node.js)	2021-01-28 13:10:22

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-07-28 07:38:15
2	Gabriel Lau	0.02 s	JavaScript (SpiderMonkey)	2016-03-23 18:55:49
3	Peter Kedemo	0.02 s	JavaScript (SpiderMonkey)	2016-09-22 17:17:17
4	Tor Nordqvist	0.02 s	JavaScript (SpiderMonkey)	2016-11-15 15:10:54
5	Bodin Punyaprateep	0.03 s	JavaScript (SpiderMonkey)	2017-05-05 01:36:12
6	Danpaol	0.03 s	JavaScript (SpiderMonkey)	2018-05-04 16:40:04
7	Faiq Naufal	0.03 s	JavaScript (SpiderMonkey)	2021-02-08 04:50:06
8	Rezady Yan Hafiz Munaf	0.03 s	JavaScript (SpiderMonkey)	2021-07-06 15:40:03
9	Christian Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-02-05 10:21:22
10	Zach Tschetter	0.04 s	JavaScript (SpiderMonkey)	2023-05-27 23:04:17

#	User	Runtime	Language	Date
1	Noszály Csaba	0.38 s	Julia	2025-03-19 17:30:34
2	Timothy Gaede	0.64 s	Julia	2024-04-12 20:44:14
3	Danny Robinson	0.75 s	Julia	2023-09-02 15:55:37

#	User	Runtime	Language	Date
1	Henning Koehler	0.20 s	Kotlin	2018-11-02 06:33:45
2	Brilian Ade Putra	0.20 s	Kotlin	2021-03-02 14:22:28
3	Gauhar Ayub Khan	0.20 s	Kotlin	2023-06-30 13:32:35
4	Dayan Ruben Gonzalez	0.21 s	Kotlin	2020-09-29 16:33:27
5	Mahdi Abdullah	0.22 s	Kotlin	2021-08-04 19:38:46
6	Alexandre Conte	0.23 s	Kotlin	2023-08-15 22:42:18
7	Hidden user	0.24 s	Kotlin	2019-11-01 03:02:28
8	Aniket Kumar	0.24 s	Kotlin	2024-05-01 18:09:36
9	Ali M. Nekoh	0.24 s	Kotlin	2025-05-21 20:49:38
10	Adam Koprowski	0.25 s	Kotlin	2021-04-08 15:22:31

#	User	Runtime	Language	Date
1	Caleb Austin	0.03 s	Lua	2024-11-22 22:26:31

#	User	Runtime	Language	Date
1	Pamidimarri Reshwanth	0.01 s	Objective-C	2020-08-21 07:05:46
2	Katamreddy Kamalesh Reddy	0.01 s	Objective-C	2020-08-21 13:45:42

#	User	Runtime	Language	Date
1	David Connolly	0.01 s	Pascal	2017-10-10 19:24:47
2	Dũ Quốc Huy	0.01 s	Pascal	2019-07-17 10:12:43
3	Bùi Quốc Trung	0.01 s	Pascal	2019-07-17 16:04:26

#	User	Runtime	Language	Date
1	devina thessalonica	0.03 s	PHP	2021-05-02 02:12:05
2	Manvi Savani	0.03 s	PHP	2024-05-02 14:47:37
3	daniel pranoto	0.04 s	PHP	2021-08-02 20:53:13
4	Daniel Pranoto	0.04 s	PHP	2021-08-02 21:03:20
5	Fluff Abrahamsson	0.04 s	PHP	2021-08-31 22:15:17
6	Silvena Lam	0.05 s	PHP	2018-03-04 02:17:03
7	Jonas Lindenskov Nielsen	0.05 s	PHP	2019-11-01 17:38:41
8	Binh Dang	0.05 s	PHP	2021-01-14 19:21:28
9	n4cer25	0.05 s	PHP	2021-01-15 21:04:39
10	Saginaw George	0.05 s	PHP	2021-01-17 13:31:30

#	User	Runtime	Language	Date
1	Hermon Mulat	0.03 s	Python 2	2017-08-10 19:26:44
2	Sigurður Jens Albertsson	0.03 s	Python 2	2018-01-09 00:54:20
3	Vifill Sverrisson	0.03 s	Python 2	2018-03-15 19:17:50
4	Stefano Chiesa	0.04 s	Python 2	2016-03-25 17:03:04
5	Marko Lazic	0.04 s	Python 2	2016-07-03 14:10:06
6	Martin Jackson	0.04 s	Python 2	2016-08-02 01:38:59
7	Hidden user	0.04 s	Python 2	2017-04-12 06:51:10
8	Ross	0.04 s	Python 2	2019-03-20 00:29:54
9	Johan Lyts	0.04 s	Python 2	2019-03-28 14:27:15
10	Vivaek Cpl	0.04 s	Python 2	2019-03-30 13:28:21

#	User	Runtime	Language	Date
1	ziga	0.02 s	Python 3	2016-04-13 02:51:52
2	Atli Fannar Franklín	0.02 s	Python 3	2017-03-16 17:16:46
3	Hidden user	0.02 s	Python 3	2018-04-04 22:28:26
4	Isaac Lee	0.03 s	Python 3	2016-05-17 01:24:34
5	Christian Lindeström	0.03 s	Python 3	2016-09-11 15:18:37
6	John Barczynski	0.03 s	Python 3	2017-09-13 02:53:14
7	Ding Zhu	0.03 s	Python 3	2018-03-23 21:00:39
8	Troels Bjerre Lund	0.03 s	Python 3	2019-04-01 11:46:04
9	Raymond van Venetie	0.03 s	Python 3	2019-06-12 17:46:58
10	Alexei Fedotov	0.03 s	Python 3	2019-07-04 14:53:59

#	User	Runtime	Language	Date
1	Macdara mac an tSionnaigh	0.05 s	Ruby	2019-11-06 23:46:45
2	Hidden user	0.10 s	Ruby	2019-02-26 12:20:54
3	henry hanaly	0.10 s	Ruby	2021-08-14 20:32:37
4	Erwin Wiguna	0.12 s	Ruby	2021-03-18 10:29:03
5	Erwin Wiguna	0.12 s	Ruby	2021-03-18 12:24:40
6	Yusuke Ichiki	0.12 s	Ruby	2022-06-20 19:40:17
7	Dylan Mcdougall	0.17 s	Ruby	2020-05-27 07:17:36
8	Thomas Feld	0.23 s	Ruby	2023-09-13 14:23:27

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-04-20 20:57:57
2	Egor Kulikov	0.00 s	Rust	2024-10-16 14:26:21
3	Shivam Thakur	0.01 s	Rust	2019-07-02 00:11:55
4	Joshua Ji	0.01 s	Rust	2020-12-16 23:00:42
5	Eric Pinter	0.01 s	Rust	2021-05-23 20:31:37
6	Sarek Høverstad Skotåm	0.01 s	Rust	2021-07-26 18:23:09
7	Bas Dirks	0.01 s	Rust	2022-01-10 13:31:13
8	Isak Jägberg	0.01 s	Rust	2022-01-17 19:21:05
9	Raphaël Gauthier	0.01 s	Rust	2022-07-27 13:18:03
10	Aaron Lengyel	0.01 s	Rust	2022-08-22 04:37:07

#	User	Length	Language	Date
1	Danny Robinson	126	Bash	2023-09-02 16:16:30

#	User	Length	Language	Date
1	Ethan Ou	421	C	2021-02-26 13:20:44
2	Conor McGovern	431	C	2018-05-28 19:45:09
3	Jahid Hasan Imon	437	C	2023-01-02 04:49:14
4	pengin	445	C	2021-09-28 12:25:34
5	Jonathan Meystrik	451	C	2023-01-26 21:37:59
6	Christopher Putra	455	C	2019-01-24 14:36:20
7	David Mellin	457	C	2017-09-19 00:51:54
8	Samuel Jade Ferrer	458	C	2019-03-17 13:47:25
9	Sunu Permanajati	472	C	2020-10-09 07:39:25
10	Ramana Palivelu Bhagya Lakshmi	485	C	2020-12-31 10:16:49

#	User	Length	Language	Date
1	Esty Crow	651	C#	2025-06-20 04:22:42
2	Liam Scalzulli	693	C#	2021-11-05 17:16:03
3	Tony Karlsson	703	C#	2025-05-07 09:58:51
4	HabibWP	801	C#	2021-05-07 18:08:03
5	Habib Wisnu	801	C#	2021-05-07 18:08:44
6	Rasmus Brants	958	C#	2017-05-18 20:43:14
7	Ali Aliev	976	C#	2024-07-14 11:31:18
8	Tor Seldén	986	C#	2017-06-08 11:04:18
9	Gustav Kalander	1003	C#	2018-06-08 20:11:10
10	Raja Sanjeev Kumar Nakka	1102	C#	2016-06-28 21:04:22

#	User	Length	Language	Date
1	Mathias Gernez	333	C++	2025-06-29 00:57:10
2	N41h_Dr3s	348	C++	2025-02-27 14:00:48
3	Flamethrower	350	C++	2019-01-24 14:37:16
4	Austin Fernandez	351	C++	2019-07-31 16:23:39
5	Leonardo Blanger	359	C++	2021-01-20 21:14:31
6	Nathan Leake	365	C++	2018-02-22 10:19:20
7	Trang Hoang	372	C++	2023-01-03 02:13:48
8	Nenad Čaklović	373	C++	2021-01-24 01:55:27
9	Đức Bắc Đinh	374	C++	2019-09-22 10:35:09
10	philica	381	C++	2021-04-08 10:44:10

#	User	Length	Language	Date
1	Thanh Dinh Ta	1668	F#	2022-08-01 22:49:48
2	Jacob Harris Cryer Kragh	1802	F#	2023-07-12 15:55:33

#	User	Length	Language	Date
1	Mohammad Ghifari Yusuf	544	Go	2021-04-05 14:07:53
2	Krzysztof Gibuła	563	Go	2021-04-13 18:30:25
3	Bistok Diiel Lelono	580	Go	2021-04-17 20:43:27
4	Mohammad Ghifari Yusuf	581	Go	2021-04-05 13:43:38
5	Yosef Hesekiel Partogi Tobing	684	Go	2020-10-08 16:24:47
6	Rifky Aditya	692	Go	2020-09-29 19:21:44
7	farhan ramadhan	788	Go	2021-05-31 14:07:49
8	Ubaidillah Hakim Fadly	828	Go	2021-08-07 12:36:03
9	Raymond Pesik	874	Go	2021-08-22 21:13:43
10	Mochammad Annafia Oktafian	918	Go	2020-09-30 21:11:07

#	User	Length	Language	Date
1	Jahid Hasan	394	Haskell	2020-10-19 08:31:41
2	Jahid Hasan Imon	394	Haskell	2020-10-19 08:32:51
3	Hidden user	407	Haskell	2017-06-10 13:33:03
4	Mason Barnhill	452	Haskell	2023-05-19 01:21:20
5	Lars Tveito	512	Haskell	2016-05-15 03:21:52
6	Esben Bjerre	587	Haskell	2018-10-13 23:32:50
7	Sebastian Banert	588	Haskell	2023-09-12 21:58:45
8	César Antonio Carvajal de la Haza	590	Haskell	2017-04-26 21:24:07
9	Brian Hwang	596	Haskell	2021-09-11 09:08:08
10	Mark Lekkerkerker	693	Haskell	2020-07-07 17:06:00

#	User	Length	Language	Date
1	William Hurley	420	Java	2023-11-22 19:34:27
2	Raymond Arrington	501	Java	2024-06-17 22:54:37
3	Stalvio Neto	512	Java	2024-08-31 18:32:31
4	Doug Goodman	536	Java	2017-08-22 21:05:25
5	Arup Ratan Guha	550	Java	2020-11-28 14:04:33
6	Brian Lee	566	Java	2017-02-06 02:47:06
7	Jianing Wang	568	Java	2017-02-08 20:43:20
8	Khoi Dang Hoang Anh	575	Java	2023-10-28 16:16:38
9	Pham Phi Long	575	Java	2023-11-27 10:05:05
10	Måns Magnusson	586	Java	2016-07-03 02:06:29

#	User	Length	Language	Date
1	Fauzan Linnas	532	JavaScript (Node.js)	2021-04-28 15:02:50
2	Nikola Stojkovski	534	JavaScript (Node.js)	2022-08-13 11:47:17
3	Jason Kristanto	609	JavaScript (Node.js)	2021-05-13 10:42:16
4	wanda syahputra	627	JavaScript (Node.js)	2021-08-21 14:52:45
5	Cliff A2312235	628	JavaScript (Node.js)	2021-02-15 18:32:30
6	Faris Putra	629	JavaScript (Node.js)	2021-06-29 15:53:22
7	wanda syahputra	629	JavaScript (Node.js)	2021-08-21 16:39:46
8	Ihsan Fauzi Rahman	656	JavaScript (Node.js)	2021-08-15 13:21:58
9	Egy Kurniawan Setyo	676	JavaScript (Node.js)	2021-08-13 13:20:15
10	Galih Andyan	706	JavaScript (Node.js)	2021-04-20 20:03:22

#	User	Length	Language	Date
1	Paul Leung	383	JavaScript (SpiderMonkey)	2017-07-18 18:34:00
2	Peter Kedemo	411	JavaScript (SpiderMonkey)	2016-09-22 17:17:17
3	Christian Cederquist	425	JavaScript (SpiderMonkey)	2023-02-05 10:21:22
4	Cole Rauh	439	JavaScript (SpiderMonkey)	2016-10-04 04:43:32
5	Gabriel Lau	459	JavaScript (SpiderMonkey)	2016-03-23 18:55:49
6	Zach Tschetter	516	JavaScript (SpiderMonkey)	2023-05-27 23:04:17
7	Rezady Yan Hafiz Munaf	542	JavaScript (SpiderMonkey)	2021-07-06 15:40:03
8	Faiq Naufal	638	JavaScript (SpiderMonkey)	2021-02-08 04:50:06
9	Zachary DeStefano	641	JavaScript (SpiderMonkey)	2018-09-01 21:08:29
10	Bodin Punyaprateep	1155	JavaScript (SpiderMonkey)	2017-05-05 01:36:12

#	User	Length	Language	Date
1	Danny Robinson	146	Julia	2023-09-02 15:55:37
2	Noszály Csaba	917	Julia	2025-03-19 17:30:34
3	Timothy Gaede	2903	Julia	2024-04-12 20:44:14

#	User	Length	Language	Date
1	Min-Zheng Shieh	566	Kotlin	2021-03-05 11:13:38
2	Chris Johnson	640	Kotlin	2024-09-07 01:26:58
3	Dayan Ruben Gonzalez	658	Kotlin	2020-09-29 16:33:27
4	Hidden user	664	Kotlin	2019-11-01 03:02:28
5	Brilian Ade Putra	682	Kotlin	2021-03-02 14:22:28
6	Aniket Kumar	704	Kotlin	2024-05-01 18:09:36
7	Ali M. Nekoh	720	Kotlin	2025-05-21 20:49:38
8	Henning Koehler	726	Kotlin	2018-11-02 06:33:45
9	Gauhar Ayub Khan	747	Kotlin	2023-06-30 13:32:35
10	Eric Huynh	777	Kotlin	2019-02-04 04:50:42

#	User	Length	Language	Date
1	Caleb Austin	719	Lua	2024-11-22 22:26:31

#	User	Length	Language	Date
1	Pamidimarri Reshwanth	513	Objective-C	2020-08-21 07:05:46
2	Katamreddy Kamalesh Reddy	513	Objective-C	2020-08-21 13:45:42

#	User	Length	Language	Date
1	Dũ Quốc Huy	582	Pascal	2019-07-17 10:12:43
2	Bùi Quốc Trung	798	Pascal	2019-07-17 16:04:26
3	David Connolly	853	Pascal	2017-10-10 19:24:47

#	User	Length	Language	Date
1	n4cer25	392	PHP	2021-01-16 05:03:24
2	Fluff Abrahamsson	432	PHP	2021-08-31 22:15:17
3	Saginaw George	459	PHP	2021-01-17 14:08:27
4	April Clark	471	PHP	2021-10-25 13:19:22
5	Binh Dang	500	PHP	2021-01-14 19:21:28
6	Ivan Mintarja	600	PHP	2021-08-02 17:25:17
7	Silvena Lam	601	PHP	2018-03-04 02:10:37
8	Harvin Pratama	668	PHP	2021-08-17 18:36:15
9	Daniel Pranoto	727	PHP	2021-08-02 21:03:20
10	daniel pranoto	728	PHP	2021-08-02 20:58:15

#	User	Length	Language	Date
1	Thomas Feld	211	Python 2	2019-08-22 17:00:24
2	Lars Åström	370	Python 2	2018-10-21 23:28:19
3	Justin Su	387	Python 2	2019-10-02 01:39:46
4	Kasper Borys	390	Python 2	2017-04-05 03:08:21
5	Anubhav Roy Bhattacharya	397	Python 2	2019-01-21 17:01:05
6	Mehdi Maick	402	Python 2	2016-08-22 20:22:21
7	Stefano Chiesa	407	Python 2	2016-03-25 17:03:04
8	Arne Tobias Malkenes Ødegaard	420	Python 2	2016-04-18 13:24:56
9	Mayank Makwana	431	Python 2	2017-09-13 02:50:44
10	Marcus Johansson	435	Python 2	2016-08-04 13:54:01

#	User	Length	Language	Date
1	Kevin Gomez	143	Python 3	2023-09-05 19:51:04
2	Hao Ye	220	Python 3	2024-04-14 13:39:29
3	Farzam Abrishami	245	Python 3	2024-02-01 21:33:46
4	Oskar Haarklou Veileborg	245	Python 3	2020-06-15 20:06:34
5	M Base 2	262	Python 3	2020-07-15 22:10:02
6	Hidden user	266	Python 3	2020-10-12 18:42:07
7	Bade Ajit	322	Python 3	2021-12-27 16:18:11
8	Bjørn Dons	325	Python 3	2018-10-21 19:47:20
9	Tim Meredith	345	Python 3	2018-11-07 19:43:14
10	Sacha De Mulder	347	Python 3	2024-11-29 14:02:02

#	User	Length	Language	Date
1	Thomas Feld	111	Ruby	2023-09-13 14:28:07
2	Hidden user	335	Ruby	2019-02-26 12:20:54
3	Yusuke Ichiki	397	Ruby	2022-06-20 19:40:17
4	Dylan Mcdougall	463	Ruby	2020-05-27 07:17:36
5	Macdara mac an tSionnaigh	474	Ruby	2019-11-06 23:46:45
6	Erwin Wiguna	624	Ruby	2021-03-18 10:29:03
7	Erwin Wiguna	624	Ruby	2021-03-18 12:24:40
8	henry hanaly	636	Ruby	2021-08-14 20:32:37

#	User	Length	Language	Date
1	Artur Khuziakhmetov	540	Rust	2025-01-17 11:14:36
2	Bas Dirks	694	Rust	2022-01-10 13:31:13
3	Þorvaldur Tumi Baldursson	809	Rust	2023-07-10 14:04:25
4	Raphaël Gauthier	834	Rust	2022-07-27 13:18:03
5	Vincent Lagerros	902	Rust	2024-04-20 20:59:29
6	Sarek Høverstad Skotåm	1063	Rust	2021-07-26 18:23:09
7	Hidden user	1125	Rust	2025-05-02 13:37:50
8	藤原潮人	1318	Rust	2023-06-18 10:00:09
9	Isak Jägberg	1346	Rust	2022-01-17 19:21:05
10	Joe Blower	1599	Rust	2025-06-28 02:47:14

Solution running time distribution