Problem A
Ninety-nine — Problem Statistics

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Submissions	6627
Accepted submissions	6303
Submission ratio	95.11%
Authors	1315
Full solves [?]	995
Full solve Ratio	75.67%

#	User	Score	Language	Date
1	Chenzhang Hu	100	Bash	2023-10-18 18:16:34
2	Thomas Feld	0	Bash	2023-09-26 16:43:49

#	User	Score	Language	Date
1	Michal Žáček	60	Common Lisp	2023-06-24 23:24:01

#	User	Score	Language	Date
1	Adam Ekelöf	100	F#	2021-03-06 20:20:16
2	Jacob Harris Cryer Kragh	100	F#	2023-05-28 18:15:31

#	User	Score	Language	Date
1	dick move	100	Go	2021-05-30 21:30:45
2	Norbert Voelker	100	Go	2021-08-26 20:58:50
3	Rajad	100	Go	2021-10-08 14:02:51
4	Nicklesh	100	Go	2021-10-09 15:50:27
5	Gustav Schölin	100	Go	2022-08-06 22:33:17
6	Marcin Dudek	30	Go	2020-10-30 16:35:28

#	User	Score	Language	Date
1	Brent Yorgey	100	Haskell	2020-11-15 14:38:02
2	Emil Østergaard	100	Haskell	2021-03-12 17:14:35
3	Shing Tak Lam	100	Haskell	2021-03-13 17:08:51
4	Steinar Simonnes	100	Haskell	2025-05-27 15:49:26
5	Matthew Power	70	Haskell	2023-10-29 15:07:33
6	Hidden user	30	Haskell	2023-08-18 15:38:40
7	CSDUMMI	0	Haskell	2022-10-05 15:33:07

#	User	Score	Language	Date
1	Hidden user	70	JavaScript (Node.js)	2022-02-17 22:30:02
2	Vladimir Riz	0	JavaScript (Node.js)	2022-11-16 15:17:52
3	Hidden user	0	JavaScript (Node.js)	2023-02-14 09:30:40

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	100	JavaScript (SpiderMonkey)	2020-11-19 12:41:33
2	Jimmy Gustafsson	100	JavaScript (SpiderMonkey)	2022-09-06 23:03:32
3	Christian Pilegaard Cederquist	100	JavaScript (SpiderMonkey)	2023-02-10 23:08:01
4	Zach Tschetter	100	JavaScript (SpiderMonkey)	2023-06-17 05:26:34

#	User	Score	Language	Date
1	Timothy Gaede	100	Julia	2024-09-19 06:39:07
2	Vahagn Altunyan	0	Julia	2024-05-07 10:59:42

#	User	Score	Language	Date
1	Sergey Jakobsen	100	Kotlin	2021-03-10 23:40:20
2	Adam Rankin	100	Kotlin	2023-08-30 05:14:41
3	Anderson Daniel Grajales	100	Kotlin	2024-12-04 04:51:11
4	Hidden user	60	Kotlin	2022-09-20 21:36:57
5	Michael Spear	0	Kotlin	2021-01-08 20:42:49

#	User	Score	Language	Date
1	KoonWen Lee	100	OCaml	2022-01-04 16:22:34
2	Sebastian Banert	100	OCaml	2024-11-11 14:44:45
3	Jinwoo Lee	100	OCaml	2025-09-14 21:34:02

#	User	Score	Language	Date
1	Ingemar Ragnemalm	100	Pascal	2023-06-06 17:29:48
2	Volker Schmidt	0	Pascal	2021-03-12 18:51:24

#	User	Score	Language	Date
1	Daniel Krueger	0	Prolog	2020-12-29 14:20:31

#	User	Score	Language	Date
1	Vladimir Maksimovski	100	Python 2	2018-06-15 06:54:57
2	Yanmarshus Bachtiar	100	Python 2	2020-11-19 03:29:03
3	Andreas Björklund	100	Python 2	2020-11-21 14:07:34
4	Hidden user	100	Python 2	2022-03-01 15:46:41
5	Johan Lyts	100	Python 2	2022-05-11 22:07:47

#	User	Score	Language	Date
1	Thomas Feld	100	Ruby	2022-12-20 09:27:41
2	Chenzhang Hu	100	Ruby	2024-02-06 17:00:35
3	Jacob Pletcher	100	Ruby	2025-02-22 22:47:21
4	Kieran Maharaj	0	Ruby	2021-01-06 02:02:33
5	Natanael Lundberg	0	Ruby	2021-09-15 16:08:18

#	User	Score	Language	Date
1	Anthony Tang	100	TypeScript	2023-04-14 21:41:36

#	User	Score	Language	Date
1	Oleksii Ihnatenko	100	Zig	2025-09-05 11:36:45

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.07 s	Bash	2023-10-18 18:16:34

#	User	Runtime	Language	Date
1	Piotr Karpala	0.02 s	C#	2020-10-13 04:33:18
2	Marek Gibek	0.02 s	C#	2020-10-21 15:43:58
3	Jakub Jarząbek	0.02 s	C#	2020-10-23 21:01:23
4	Arek Swierczek	0.02 s	C#	2020-10-25 21:41:39
5	Askar Rakhimzhanov	0.02 s	C#	2020-10-26 20:24:54
6	Bryan Shiffman	0.02 s	C#	2020-10-30 15:01:52
7	Agnieszka Kisiel	0.02 s	C#	2020-11-15 20:50:03
8	Donald Heppner	0.02 s	C#	2020-12-03 17:15:16
9	Maame A Apenteng	0.02 s	C#	2020-12-04 01:59:52
10	Johan Litsfeldt	0.02 s	C#	2021-03-28 16:15:36

#	User	Runtime	Language	Date
1	Adam Ekelöf	0.02 s	F#	2021-03-06 20:20:16
2	Jacob Harris Cryer Kragh	0.04 s	F#	2023-05-28 18:15:31

#	User	Runtime	Language	Date
1	Gustav Schölin	0.02 s	Go	2022-08-06 22:33:17
2	dick move	0.08 s	Go	2021-05-30 21:30:45
3	Norbert Voelker	0.08 s	Go	2021-08-26 20:58:50
4	Rajad	0.08 s	Go	2021-10-08 14:02:51
5	Nicklesh	0.08 s	Go	2021-10-09 15:50:27

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2025-05-27 15:50:52
2	Brent Yorgey	0.01 s	Haskell	2020-11-15 14:38:02
3	Emil Østergaard	0.01 s	Haskell	2021-03-12 17:14:35
4	Shing Tak Lam	0.01 s	Haskell	2021-03-13 17:08:51

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2024-12-29 08:46:26
2	Asha Mavankal	0.04 s	Java	2025-12-17 06:34:28
3	Christian Bertram	0.05 s	Java	2018-04-27 17:56:50
4	Oliver Stenberg Jakobsen	0.05 s	Java	2018-04-27 18:16:56
5	Joachim Borup	0.06 s	Java	2021-03-12 20:11:06
6	Marius Årdal	0.06 s	Java	2021-07-13 00:51:09
7	William Sanders	0.06 s	Java	2022-06-17 21:34:59
8	Mariann Løtvedt	0.06 s	Java	2022-07-17 18:36:00
9	Love Engman	0.06 s	Java	2023-08-19 10:24:32
10	Ben Cobb	0.06 s	Java	2023-10-17 05:54:08

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2020-11-19 12:41:33
2	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-09-06 23:03:32
3	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-02-10 23:08:01
4	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-17 05:26:34

#	User	Runtime	Language	Date
1	Timothy Gaede	0.52 s	Julia	2024-09-19 06:39:07

#	User	Runtime	Language	Date
1	Sergey Jakobsen	0.17 s	Kotlin	2021-03-10 23:41:54
2	Adam Rankin	0.17 s	Kotlin	2023-08-30 05:14:41
3	Anderson Daniel Grajales	0.20 s	Kotlin	2024-12-04 04:51:11

#	User	Runtime	Language	Date
1	KoonWen Lee	0.00 s	OCaml	2022-01-04 16:22:34
2	Sebastian Banert	0.00 s	OCaml	2024-11-11 14:44:45
3	Jinwoo Lee	0.00 s	OCaml	2025-09-14 21:34:02

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2023-06-06 17:29:48

#	User	Runtime	Language	Date
1	Vladimir Maksimovski	0.03 s	Python 2	2018-06-15 06:54:57
2	Yanmarshus Bachtiar	0.03 s	Python 2	2020-11-19 03:29:03
3	Hidden user	0.03 s	Python 2	2022-03-01 15:46:41
4	Johan Lyts	0.03 s	Python 2	2022-05-11 22:07:47
5	Andreas Björklund	0.05 s	Python 2	2020-11-21 14:07:34

#	User	Runtime	Language	Date
1	Carl Bordum	0.02 s	Python 3	2018-04-27 17:48:40
2	Marcel Wrzos-Kaminski	0.02 s	Python 3	2019-04-05 14:52:17
3	Khang Trần	0.04 s	Python 3	2022-06-08 11:17:06
4	Thomas Draper	0.04 s	Python 3	2022-06-10 07:10:20
5	Martin Zhang	0.04 s	Python 3	2022-07-04 13:32:01
6	Elias Lundell	0.04 s	Python 3	2022-07-04 13:32:34
7	Fattis	0.04 s	Python 3	2022-07-04 13:59:46
8	Peter Stauder	0.04 s	Python 3	2022-07-09 21:47:34
9	Hidden user	0.04 s	Python 3	2022-07-20 22:01:38
10	Mukerem Ali Nur	0.04 s	Python 3	2022-09-10 18:06:42

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2022-12-20 09:27:41
2	Chenzhang Hu	0.06 s	Ruby	2024-02-06 17:00:35
3	Jacob Pletcher	0.06 s	Ruby	2025-02-22 22:47:21

#	User	Runtime	Language	Date
1	Anthony Tang	0.09 s	TypeScript	2023-04-14 21:41:36

#	User	Runtime	Language	Date
1	Oleksii Ihnatenko	0.00 s	Zig	2025-09-05 11:36:45

#	User	Length	Language	Date
1	Chenzhang Hu	36	Bash	2025-09-13 04:49:56

#	User	Length	Language	Date
1	Claudio Lodi	297	C	2023-09-29 12:35:46
2	Alexander Bilde Pedersen	394	C	2023-06-05 15:17:38
3	Jesse Case	412	C	2021-11-23 20:51:13
4	Lorenzo Mariotti	440	C	2022-11-10 19:23:32
5	Sambit Palit	593	C	2020-11-16 20:30:00
6	Philip Borndalen	619	C	2023-09-30 23:04:40
7	Jonathan D Gentry	638	C	2025-11-27 05:11:41
8	Levi Migom	695	C	2024-03-15 19:29:51
9	Pranav Behata	757	C	2025-09-25 03:58:49
10	Simon lindberg	842	C	2022-09-20 01:34:42

#	User	Length	Language	Date
1	Ekaterina Tcareva	453	C#	2025-05-11 23:43:41
2	Gustav Bech Henriksen	509	C#	2022-06-26 21:19:29
3	Kelvin Snepvangers	553	C#	2022-05-11 15:36:32
4	Bryan Shiffman	598	C#	2020-10-30 15:01:52
5	Nicolai Robinson	638	C#	2021-09-27 15:18:19
6	Hidden user	687	C#	2021-11-03 23:17:09
7	rf	726	C#	2023-02-19 23:42:00
8	peder kristian odgaard-jensen	746	C#	2021-09-27 15:20:41
9	Adrian Bay Dorph	791	C#	2022-02-05 14:17:35
10	Jakub Jarząbek	810	C#	2020-10-23 21:01:23

#	User	Length	Language	Date
1	Taylor Rodríguez	85	C++	2025-05-11 06:07:22
2	Frans Meulenbroeks	105	C++	2024-10-31 22:18:05
3	Anders Mouanga	106	C++	2023-05-16 14:51:12
4	Hidden user	140	C++	2025-01-04 22:20:05
5	Tyler Fernando	146	C++	2022-11-03 08:52:09
6	Mathias Gernez	176	C++	2023-08-25 20:16:54
7	Christian Yongwhan Lim	188	C++	2023-03-25 21:15:20
8	黃浚瑜	195	C++	2022-01-31 03:23:53
9	Dagur Þórisson	214	C++	2025-08-11 20:29:34
10	Florian Cliquet	216	C++	2024-11-27 18:44:01

#	User	Length	Language	Date
1	Adam Ekelöf	333	F#	2021-03-06 20:20:16
2	Jacob Harris Cryer Kragh	455	F#	2023-05-28 18:15:31

#	User	Length	Language	Date
1	Gustav Schölin	447	Go	2022-08-06 22:33:17
2	Rajad	574	Go	2021-10-08 14:02:51
3	Nicklesh	574	Go	2021-10-09 15:50:27
4	Norbert Voelker	579	Go	2021-08-26 20:58:50
5	dick move	2227	Go	2021-05-30 21:30:45

#	User	Length	Language	Date
1	Shing Tak Lam	358	Haskell	2021-03-13 17:08:51
2	Emil Østergaard	498	Haskell	2021-03-12 17:14:35
3	Brent Yorgey	508	Haskell	2020-11-15 14:38:02
4	Steinar Simonnes	832	Haskell	2025-05-27 15:50:52

#	User	Length	Language	Date
1	Christian Frederiksen	336	Java	2022-10-02 18:46:13
2	George Zhang	402	Java	2023-10-14 06:28:34
3	Abdullah Al Rafi Mahmud	405	Java	2022-01-22 07:59:01
4	Pedro Marcet	415	Java	2023-09-26 23:36:30
5	Ashley Zhang	422	Java	2022-09-03 01:21:21
6	Jonathan Gunasekaran	425	Java	2022-08-20 20:10:12
7	Christian Bertram	426	Java	2018-04-27 17:56:50
8	Hidden user	440	Java	2023-03-05 02:58:50
9	Keshav Bhargava	444	Java	2022-12-30 01:18:59
10	Hidden user	447	Java	2022-12-30 01:34:04

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	48	JavaScript (SpiderMonkey)	2023-02-10 23:13:49
2	Jimmy Gustafsson	132	JavaScript (SpiderMonkey)	2022-09-06 23:03:32
3	Zach Tschetter	256	JavaScript (SpiderMonkey)	2023-06-17 05:26:34
4	Bjørn Chr. Soltvedt	661	JavaScript (SpiderMonkey)	2020-11-19 12:41:33

#	User	Length	Language	Date
1	Timothy Gaede	445	Julia	2024-09-19 06:39:07

#	User	Length	Language	Date
1	Sergey Jakobsen	345	Kotlin	2021-03-10 23:41:54
2	Anderson Daniel Grajales	521	Kotlin	2024-12-04 04:51:11
3	Adam Rankin	538	Kotlin	2023-08-30 05:14:41

#	User	Length	Language	Date
1	Sebastian Banert	293	OCaml	2024-11-11 14:44:45
2	KoonWen Lee	382	OCaml	2022-01-04 16:22:34
3	Jinwoo Lee	479	OCaml	2025-09-14 21:34:02

#	User	Length	Language	Date
1	Ingemar Ragnemalm	501	Pascal	2023-06-06 17:29:48

#	User	Length	Language	Date
1	Andreas Björklund	176	Python 2	2020-11-21 14:07:34
2	Hidden user	218	Python 2	2022-03-01 15:46:41
3	Vladimir Maksimovski	230	Python 2	2018-06-15 06:54:57
4	Johan Lyts	331	Python 2	2022-05-11 22:07:47
5	Yanmarshus Bachtiar	337	Python 2	2020-11-19 03:29:03

#	User	Length	Language	Date
1	Taylor Rodríguez	54	Python 3	2024-10-28 13:00:07
2	Sebastian Boldsen Jakobsen	60	Python 3	2022-10-09 11:22:20
3	Thomas Feld	60	Python 3	2022-12-20 09:27:04
4	Si Jie Tan	66	Python 3	2025-12-13 03:52:46
5	Ole Vik Lysne	77	Python 3	2025-10-07 17:41:35
6	Sterling Smith	90	Python 3	2025-03-26 01:56:17
7	Jonathan Dastrup	92	Python 3	2024-06-03 03:56:01
8	Daniel D'Agosta	95	Python 3	2025-02-23 22:19:04
9	David Aldenbro	100	Python 3	2025-10-21 16:16:21
10	George Zhang	102	Python 3	2023-10-06 19:04:09

#	User	Length	Language	Date
1	Chenzhang Hu	32	Ruby	2025-03-08 11:27:16
2	Thomas Feld	40	Ruby	2023-02-14 13:25:25
3	Jacob Pletcher	74	Ruby	2025-02-23 22:35:18

#	User	Length	Language	Date
1	Artur Khuziakhmetov	328	Rust	2025-11-14 08:04:46
2	Bas Dirks	417	Rust	2022-01-16 21:47:49
3	S3br	505	Rust	2022-12-01 19:53:02
4	Adam Gausmann	510	Rust	2021-11-18 06:12:10
5	Zachary DeStefano	522	Rust	2024-07-09 02:32:38
6	Vincent Lagerros	550	Rust	2024-06-02 05:22:11
7	Rasmus Bruhn Nielsen	562	Rust	2024-07-07 10:51:39
8	Joe Blower	602	Rust	2025-06-07 18:46:46
9	Simon Grünwald	714	Rust	2023-07-06 11:23:56
10	Steven Xia	731	Rust	2022-06-13 23:13:11

#	User	Length	Language	Date
1	Anthony Tang	2269	TypeScript	2023-04-14 21:41:36

#	User	Length	Language	Date
1	Oleksii Ihnatenko	760	Zig	2025-09-05 11:36:45

Solution running time distribution