Problem F
Eligibility — Problem Statistics

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Submissions	8513
Accepted submissions	4109
Submission ratio	48.27%
Authors	3903
Accepted authors	3712
Author ratio	95.11%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-05 19:22:41
2	Thomas Feld	0.01 s	Bash	2023-09-08 14:45:36

#	User	Runtime	Language	Date
1	Jens Mossig	0.02 s	C#	2015-10-26 18:16:40
2	Stefan Nordling	0.02 s	C#	2015-11-02 11:53:58
3	Hidden user	0.02 s	C#	2015-12-06 16:43:27
4	Jay Hal	0.02 s	C#	2016-02-07 18:57:22
5	Faisal Rahman	0.02 s	C#	2016-03-11 10:47:05
6	Robin Andersson	0.02 s	C#	2016-03-29 19:05:15
7	Luiz Miranda	0.02 s	C#	2016-04-02 19:42:09
8	Hidden user	0.02 s	C#	2016-04-02 19:58:01
9	Emílio Weba	0.02 s	C#	2016-04-03 19:29:23
10	Joe Amenta	0.02 s	C#	2016-04-05 00:32:21

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-09-12 17:00:31

#	User	Runtime	Language	Date
1	Patrick Bahr	0.05 s	F#	2021-02-23 20:24:30
2	Jacob Harris Cryer Kragh	0.05 s	F#	2022-06-05 13:11:25

#	User	Runtime	Language	Date
1	Husain Satan	0.01 s	Go	2023-11-16 19:55:44
2	Albert Leung	0.01 s	Go	2024-08-10 03:36:31
3	Jimmy Nejtron	0.01 s	Go	2024-08-25 21:04:56
4	n k	0.01 s	Go	2025-01-13 10:25:14
5	Diamond	0.02 s	Go	2022-11-19 04:54:24
6	Krzysztof Gibuła	0.07 s	Go	2019-03-17 13:40:53
7	Norbert Voelker	0.08 s	Go	2021-04-11 21:09:38
8	Charlie Egan	0.09 s	Go	2015-10-31 18:18:09
9	Hidden user	0.12 s	Go	2023-04-12 19:42:12
10	Wojtek Bednarzak	0.13 s	Go	2018-07-10 18:17:29

#	User	Runtime	Language	Date
1	Blake Hyde	0.01 s	Haskell	2015-11-02 00:21:51
2	Christian Leipe	0.01 s	Haskell	2015-11-28 21:16:19
3	Wilfried van Asten	0.01 s	Haskell	2015-12-10 14:00:16
4	Kristoffer Andersen	0.01 s	Haskell	2015-12-13 01:24:05
5	Peter Deal	0.01 s	Haskell	2016-05-04 05:30:14
6	Hidden user	0.01 s	Haskell	2016-07-25 04:31:41
7	Carl Agrell	0.01 s	Haskell	2016-09-28 18:27:59
8	Lieven Marchand	0.01 s	Haskell	2017-08-25 10:35:19
9	Simen Endsjø	0.01 s	Haskell	2017-11-12 11:40:48
10	Conor McGovern	0.01 s	Haskell	2018-05-24 01:31:41

#	User	Runtime	Language	Date
1	Lee Heng Sheng	0.06 s	Java	2024-04-21 08:42:52
2	Marco Vincenzo Karaan	0.07 s	Java	2016-06-11 07:11:45
3	Martijn Muijsers	0.07 s	Java	2016-09-25 13:30:28
4	Mike Beckers	0.07 s	Java	2017-04-01 00:10:37
5	José Vander Meulen	0.07 s	Java	2018-10-06 23:07:50
6	Sam Reinehr	0.07 s	Java	2018-10-20 18:44:03
7	Nick Wu	0.08 s	Java	2015-10-24 23:52:48
8	John Valinger	0.08 s	Java	2015-12-04 12:27:12
9	Michel Langeveld	0.08 s	Java	2015-12-06 18:01:44
10	Robert Wörlund	0.08 s	Java	2015-12-18 20:43:38

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	JavaScript (Node.js)	2023-09-25 06:04:00
2	Nicola Ye	0.06 s	JavaScript (Node.js)	2025-04-10 21:48:41
3	Sander Hellesø	0.07 s	JavaScript (Node.js)	2019-04-22 08:30:59
4	Chris Wong	0.43 s	JavaScript (Node.js)	2021-02-03 21:16:24
5	Howard Tin Chi Chan	0.43 s	JavaScript (Node.js)	2021-02-14 15:30:29
6	Hitali Shah	0.43 s	JavaScript (Node.js)	2021-03-09 19:24:01
7	Meghla Sarkar	0.43 s	JavaScript (Node.js)	2021-03-11 23:03:02
8	Sai Sri Vathsava Udathu	0.43 s	JavaScript (Node.js)	2021-03-13 17:22:45
9	Dharmarakshit Harley	0.43 s	JavaScript (Node.js)	2021-03-14 01:19:10
10	Dharmarakshit Harley	0.43 s	JavaScript (Node.js)	2021-03-14 02:23:37

#	User	Runtime	Language	Date
1	Bjørn Zeiler Hougaard	0.01 s	JavaScript (SpiderMonkey)	2015-11-10 18:44:00
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-26 20:07:19
3	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-11 21:41:54
4	Mark Bouchkevitch	0.01 s	JavaScript (SpiderMonkey)	2016-01-23 20:04:02
5	Tim Oram	0.01 s	JavaScript (SpiderMonkey)	2016-03-06 05:39:42
6	Johannes Jensen	0.01 s	JavaScript (SpiderMonkey)	2016-03-17 16:26:49
7	Adam Murphy	0.01 s	JavaScript (SpiderMonkey)	2016-03-30 23:54:54
8	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-02 09:34:34
9	J M	0.01 s	JavaScript (SpiderMonkey)	2016-11-14 22:29:54
10	Love Almgren	0.01 s	JavaScript (SpiderMonkey)	2016-11-19 15:56:07

#	User	Runtime	Language	Date
1	Timothy Gaede	0.50 s	Julia	2024-04-03 07:55:14
2	Danny Robinson	0.63 s	Julia	2023-09-05 19:14:41

#	User	Runtime	Language	Date
1	Jacob Huebner	0.15 s	Kotlin	2021-05-31 06:29:54
2	Nicholas Johnson	0.17 s	Kotlin	2021-05-30 21:16:07
3	Hidden user	0.18 s	Kotlin	2019-12-31 05:53:00
4	Kiel Dowdle	0.18 s	Kotlin	2021-06-12 19:07:21
5	Albert Pala	0.18 s	Kotlin	2021-06-29 12:40:26
6	Dayan Ruben Gonzalez	0.23 s	Kotlin	2020-09-30 19:51:04
7	Adam Rankin	0.25 s	Kotlin	2023-05-10 20:55:03
8	Terairk	0.26 s	Kotlin	2023-11-27 01:29:09
9	Johnny Baloney	0.27 s	Kotlin	2021-09-05 12:17:52
10	Adam Koprowski	0.29 s	Kotlin	2020-08-11 10:55:41

#	User	Runtime	Language	Date
1	Nino Bašić	0.01 s	Nim	2024-11-13 18:31:55

#	User	Runtime	Language	Date
1	Rafał Gwoździński	0.00 s	OCaml	2021-05-26 21:17:29
2	Fredrik Eriksson	0.00 s	OCaml	2024-10-22 20:10:35
3	Xiu-Heng Hua	0.00 s	OCaml	2024-12-14 10:10:42
4	Philip Pham	0.01 s	OCaml	2020-08-09 00:30:46
5	Danil Braun	0.01 s	OCaml	2021-05-07 14:01:45

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-03-03 17:44:23
2	David Connolly	0.00 s	Pascal	2022-04-15 15:46:30

#	User	Runtime	Language	Date
1	Saito Ta	0.00 s	Perl	2024-04-25 09:32:05

#	User	Runtime	Language	Date
1	Martin Dibakar Björling	0.01 s	PHP	2015-11-24 14:14:05
2	Silvena Lam	0.01 s	PHP	2016-02-10 11:18:22
3	Steven D. Wilson	0.01 s	PHP	2016-03-16 23:26:41
4	Marcus Hallén	0.01 s	PHP	2017-07-29 18:50:30
5	陳建宏	0.01 s	PHP	2021-05-06 18:51:25
6	Renate	0.01 s	PHP	2021-05-11 21:52:28
7	Andre Wahyudi	0.01 s	PHP	2022-10-18 11:00:51

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.03 s	Prolog	2023-02-13 00:03:35
2	Andriy Zyevakov	0.05 s	Prolog	2016-08-28 20:00:49
3	Hadi Qovaizi	0.10 s	Prolog	2016-04-12 20:25:38

#	User	Runtime	Language	Date
1	Asger Hautop Drewsen	0.03 s	Python 2	2015-10-26 17:11:38
2	Frederik Højholt	0.03 s	Python 2	2015-10-26 17:31:25
3	Oskar Haarklou Veileborg	0.03 s	Python 2	2015-10-26 17:39:19
4	Alexander Teno	0.03 s	Python 2	2016-01-05 00:47:37
5	Tin Anh Nguyen	0.03 s	Python 2	2016-03-12 15:48:22
6	Scott Handelman	0.03 s	Python 2	2016-04-14 05:58:35
7	Alvaro Silvino	0.03 s	Python 2	2016-04-20 04:15:22
8	Hidden user	0.03 s	Python 2	2016-07-27 15:45:23
9	Maksym Bendeberia	0.03 s	Python 2	2016-08-19 13:39:26
10	Sala Gabriel	0.03 s	Python 2	2017-04-05 23:32:20

#	User	Runtime	Language	Date
1	Charles Zinn	0.02 s	Python 3	2015-10-24 19:10:31
2	Adam Fazekas	0.02 s	Python 3	2015-10-24 19:51:25
3	John Harrison	0.02 s	Python 3	2015-10-25 19:13:01
4	Matthew Rogers	0.02 s	Python 3	2015-10-25 19:14:30
5	Emil Riis Hansen	0.02 s	Python 3	2015-10-28 20:32:06
6	Heidi Sand	0.02 s	Python 3	2015-11-28 23:25:53
7	Johannes Agestam	0.02 s	Python 3	2015-12-08 20:46:51
8	Martin Stensgård	0.02 s	Python 3	2016-01-24 05:19:03
9	Joshua Martin Tjahjadi	0.02 s	Python 3	2016-02-05 19:10:03
10	Thais Minet	0.02 s	Python 3	2016-02-11 18:21:06

#	User	Runtime	Language	Date
1	Charlie Egan	0.03 s	Ruby	2015-10-31 17:58:58
2	Lasse Berglund	0.03 s	Ruby	2016-03-28 10:02:43
3	Erik Rydbert	0.03 s	Ruby	2016-07-08 16:05:39
4	Casper Christensen	0.06 s	Ruby	2015-12-31 00:11:29
5	Régis Hanol	0.06 s	Ruby	2022-01-11 15:08:22
6	Thomas Feld	0.06 s	Ruby	2022-11-01 22:40:45
7	Russell Ng	0.07 s	Ruby	2025-05-21 04:34:53

#	User	Runtime	Language	Date
1	Jevania	0.01 s	Swift	2024-02-19 04:43:40

#	User	Length	Language	Date
1	Thomas Feld	86	Bash	2023-09-12 15:27:21
2	Danny Robinson	93	Bash	2023-09-05 19:22:41

#	User	Length	Language	Date
1	Eduardo Núñez	236	C	2024-02-25 20:24:28
2	Martin Blom	283	C	2023-10-18 08:28:47
3	Aviral Utkarsh	383	C	2017-02-24 19:14:58
4	Patrick Wentzel	404	C	2016-03-09 23:34:58
5	Anton Haglund	421	C	2016-11-20 23:14:27
6	Emil Wihlander	430	C	2020-12-02 22:16:05
7	Arunraj Jayakumar	457	C	2025-03-31 16:23:41
8	Erasmus Cedernaes	458	C	2015-11-19 17:34:04
9	Hrant Hovhannisyan	479	C	2017-03-26 08:48:47
10	Donikon Fajar	483	C	2018-11-13 02:23:11

#	User	Length	Language	Date
1	Hidden user	543	C#	2015-12-06 16:43:27
2	Shaun Lazaro	734	C#	2016-12-13 16:37:50
3	Thomas Norris	744	C#	2019-06-25 23:50:34
4	Kunwei Zhang	777	C#	2018-02-09 08:24:19
5	Leslie Yip	794	C#	2022-07-10 04:38:27
6	Nicholas Hood	815	C#	2024-09-26 22:40:22
7	Victor Hultén Mattsson	821	C#	2021-07-07 22:42:58
8	Michael Damsgaard	822	C#	2024-11-29 16:59:20
9	Jay Hal	863	C#	2016-02-07 18:59:56
10	Göran Andersson	897	C#	2022-05-13 00:26:10

#	User	Length	Language	Date
1	Hakan Kjellerstrand	333	C++	2025-02-17 10:11:56
2	Mostafa Mubashir Hossain	337	C++	2023-05-17 14:30:13
3	Hidden user	353	C++	2022-12-20 16:08:34
4	Áron Hoffmann	361	C++	2015-11-11 02:18:24
5	Amrani Nejjar Omar	361	C++	2017-06-06 00:07:56
6	Jalvin Chan Jia Xiang	365	C++	2020-01-03 06:32:16
7	Yeung Man Tsung	370	C++	2022-06-21 18:25:56
8	Syx Pek	375	C++	2016-01-15 07:01:30
9	Emmanuel Anaya	378	C++	2016-04-29 23:25:03
10	Kevin Huai	378	C++	2024-06-21 23:16:03

#	User	Length	Language	Date
1	David Cawthon	928	Common Lisp	2020-09-12 17:00:31

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1398	F#	2022-06-05 13:11:25
2	Patrick Bahr	2188	F#	2021-02-23 20:24:30

#	User	Length	Language	Date
1	Kellen Watt	500	Go	2015-10-24 19:58:15
2	Wojtek Bednarzak	504	Go	2018-07-10 18:17:29
3	Hidden user	530	Go	2023-04-12 19:42:12
4	Ian Howell	590	Go	2016-05-11 05:17:46
5	Jimmy Nejtron	656	Go	2024-08-25 21:04:56
6	Conrad Parker	660	Go	2020-08-14 02:17:49
7	Krzysztof Gibuła	691	Go	2019-03-17 13:40:53
8	Hidden user	696	Go	2021-12-17 11:59:23
9	Charlie Egan	892	Go	2015-10-31 18:18:09
10	Husain Satan	921	Go	2023-11-16 19:55:44

#	User	Length	Language	Date
1	Li Jun	296	Haskell	2023-06-20 18:07:43
2	Matthew Gvasalia	453	Haskell	2023-04-17 15:07:08
3	Sebastian Banert	492	Haskell	2023-09-03 18:09:09
4	Carl Agrell	501	Haskell	2016-09-28 18:27:59
5	Christian Leipe	520	Haskell	2015-11-28 21:16:19
6	Nicholas Marsh	529	Haskell	2022-09-17 18:58:07
7	Lieven Marchand	534	Haskell	2017-08-25 10:35:19
8	Tobias Glimmerfors	538	Haskell	2020-01-26 11:12:53
9	David Zacek	545	Haskell	2021-05-11 01:52:28
10	Daniel German	616	Haskell	2018-06-30 21:42:09

#	User	Length	Language	Date
1	José Copas	536	Java	2019-12-17 23:29:14
2	Nathaniel Lukas Christianto	559	Java	2023-12-26 10:51:31
3	Nay Thit	569	Java	2019-10-13 11:37:41
4	Alen Bosnjak	575	Java	2018-11-27 16:18:35
5	Zayn Jarvis	585	Java	2019-06-13 12:36:06
6	David Engström	588	Java	2017-08-08 16:22:44
7	Emily Ong Hui Qi	602	Java	2022-01-04 07:14:26
8	Zain Anwar	607	Java	2019-11-30 17:08:09
9	Simon Xue	610	Java	2015-11-08 19:44:24
10	Mohamad Moaqaly	613	Java	2022-10-28 09:26:06

#	User	Length	Language	Date
1	Kolliboina, Sai Praneet	649	JavaScript (Node.js)	2021-03-16 03:24:15
2	Tarun Vakkalagadda	649	JavaScript (Node.js)	2021-03-16 03:26:58
3	Venkata Manikanta Pavan Subhash Gali	650	JavaScript (Node.js)	2021-03-16 04:24:27
4	Sathish Reddy Dhevarapalli	656	JavaScript (Node.js)	2021-03-16 02:38:04
5	Deepthi Reddy Duggampudi	656	JavaScript (Node.js)	2021-03-16 03:55:37
6	Avinash Reddy	656	JavaScript (Node.js)	2021-03-15 16:58:17
7	Surya Teja	656	JavaScript (Node.js)	2021-03-16 02:51:09
8	Geereddy Amulya	656	JavaScript (Node.js)	2021-03-16 03:45:42
9	Venkata Sai Raghavendra Rao Sunkavalli	656	JavaScript (Node.js)	2021-03-16 03:55:35
10	Kotha Vivek	656	JavaScript (Node.js)	2021-03-16 04:20:54

#	User	Length	Language	Date
1	Jimmy Gustafsson	137	JavaScript (SpiderMonkey)	2024-06-11 23:30:04
2	Christian Cederquist	162	JavaScript (SpiderMonkey)	2022-11-05 23:36:09
3	Evan Magill	186	JavaScript (SpiderMonkey)	2024-04-19 02:17:44
4	Bjørn Chr. Soltvedt	375	JavaScript (SpiderMonkey)	2016-01-11 21:41:54
5	Tor Nordqvist	384	JavaScript (SpiderMonkey)	2016-11-02 09:34:34
6	Peter Menyes	440	JavaScript (SpiderMonkey)	2017-08-08 20:35:36
7	Casey Smith	485	JavaScript (SpiderMonkey)	2019-05-30 16:14:44
8	Geir Magne Karlsen	487	JavaScript (SpiderMonkey)	2017-01-25 12:17:45
9	Peter Kedemo	505	JavaScript (SpiderMonkey)	2015-12-26 20:07:19
10	Spencer Smith	535	JavaScript (SpiderMonkey)	2017-06-06 17:18:54

#	User	Length	Language	Date
1	Danny Robinson	155	Julia	2023-09-05 19:14:41
2	Timothy Gaede	671	Julia	2024-04-03 07:55:14

#	User	Length	Language	Date
1	Adam Koprowski	458	Kotlin	2020-08-11 10:55:41
2	Einar Kjellback	537	Kotlin	2019-12-03 18:47:41
3	Dayan Ruben Gonzalez	651	Kotlin	2020-09-30 19:51:04
4	Troy Warmboe	661	Kotlin	2020-02-10 23:30:23
5	Adam Rankin	704	Kotlin	2023-05-10 20:55:03
6	Johnny Baloney	708	Kotlin	2021-09-05 12:17:52
7	Gaurav Tyagi	782	Kotlin	2018-08-09 23:04:50
8	Jacob Huebner	831	Kotlin	2021-05-31 06:29:54
9	Dmitry Shostak	935	Kotlin	2018-08-24 13:09:37
10	Albert Pala	1057	Kotlin	2021-06-29 12:40:26

#	User	Length	Language	Date
1	Nino Bašić	785	Nim	2024-11-13 18:31:55

#	User	Length	Language	Date
1	Xiu-Heng Hua	402	OCaml	2024-12-14 10:10:42
2	Rafał Gwoździński	439	OCaml	2021-05-26 21:17:29
3	Philip Pham	453	OCaml	2020-08-09 00:30:46
4	Fredrik Eriksson	750	OCaml	2024-10-22 20:10:35
5	Danil Braun	790	OCaml	2021-05-07 14:01:45

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1334	Pascal	2018-03-03 17:44:23
2	David Connolly	1652	Pascal	2022-04-15 15:46:30

#	User	Length	Language	Date
1	Saito Ta	93	Perl	2024-04-25 09:32:05

#	User	Length	Language	Date
1	Renate	458	PHP	2021-05-11 21:52:28
2	陳建宏	483	PHP	2021-05-06 18:51:25
3	Steven D. Wilson	592	PHP	2016-03-16 23:26:41
4	Marcus Hallén	739	PHP	2017-07-29 18:50:30
5	Andre Wahyudi	813	PHP	2022-10-18 11:00:51
6	Silvena Lam	905	PHP	2016-02-10 11:18:22
7	Martin Dibakar Björling	953	PHP	2015-11-24 14:14:05

#	User	Length	Language	Date
1	Hakan Kjellerstrand	583	Prolog	2023-02-13 00:03:35
2	Andriy Zyevakov	749	Prolog	2016-08-28 20:00:49
3	Hadi Qovaizi	2816	Prolog	2016-04-12 20:25:38

#	User	Length	Language	Date
1	Thomas Feld	209	Python 2	2019-08-19 20:25:45
2	Hidden user	245	Python 2	2018-01-06 03:36:25
3	Johannes Agestam	256	Python 2	2015-12-08 20:49:08
4	beagle dog	259	Python 2	2020-05-08 13:00:36
5	Claudius Sundlöf	292	Python 2	2017-09-29 17:35:22
6	Justin Su	307	Python 2	2017-09-24 07:50:50
7	Jeff Robertson	311	Python 2	2017-05-16 18:35:40
8	Asger Hautop Drewsen	316	Python 2	2015-10-26 17:11:38
9	Oskar Haarklou Veileborg	320	Python 2	2015-10-26 17:39:19
10	Jesper Öqvist	322	Python 2	2018-10-20 12:47:47

#	User	Length	Language	Date
1	Kevin Gomez	124	Python 3	2024-11-15 01:23:41
2	Benjamin Z White	135	Python 3	2023-05-01 11:12:31
3	Jonathan Ståhl	167	Python 3	2024-10-21 20:53:00
4	Nguyên Khôi Đỗ	167	Python 3	2024-12-19 01:56:02
5	Ahmed Chamseddine	167	Python 3	2024-07-04 18:01:49
6	David Worley	193	Python 3	2024-02-03 19:53:28
7	Morten Clausen	198	Python 3	2022-10-03 00:36:57
8	Daniella Vargas	200	Python 3	2023-10-18 23:08:53
9	Tai Tze Kin	202	Python 3	2024-05-01 16:46:36
10	Kenneth Jensen	218	Python 3	2022-07-13 11:06:31

#	User	Length	Language	Date
1	Thomas Feld	108	Ruby	2022-11-03 15:19:55
2	Russell Ng	122	Ruby	2025-05-21 04:34:53
3	Erik Rydbert	299	Ruby	2016-07-08 16:05:39
4	Casper Christensen	308	Ruby	2015-12-31 00:11:29
5	Charlie Egan	336	Ruby	2015-10-31 17:58:58
6	Lasse Berglund	438	Ruby	2016-03-28 10:02:43
7	Régis Hanol	441	Ruby	2022-01-11 15:08:22

#	User	Length	Language	Date
1	Vincent Lagerros	334	Rust	2024-12-08 00:06:37
2	Thomas	719	Rust	2023-08-11 21:47:09
3	Hidden user	855	Rust	2022-09-01 22:53:38
4	Alexandr Last	887	Rust	2023-08-15 17:37:42
5	Laura Parkes	910	Rust	2022-08-25 22:18:07
6	Bas Dirks	1006	Rust	2021-12-31 08:43:16
7	Ishtiaq Hussain Naqi	1040	Rust	2023-08-11 20:51:53
8	Freek van Keulen	1041	Rust	2021-07-14 08:19:35
9	Thobias Larsen	1084	Rust	2023-01-28 12:15:14
10	CARLOS ANDRÉS PONCE	1096	Rust	2019-10-28 20:35:37

#	User	Length	Language	Date
1	Jevania	792	Swift	2024-02-19 04:43:40

Solution running time distribution