Problem A
Flip Flow — Problem Statistics

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Submissions	995
Accepted submissions	473
Submission ratio	47.54%
Authors	461
Full solves [?]	415
Full solve Ratio	90.02%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-11-25 17:35:23

#	User	Runtime	Language	Date
1	Adrian Borup	0.00 s	C	2022-09-23 16:53:53
2	Marcus Oscarsson	0.00 s	C	2022-11-02 20:25:45
3	Julian Duniec	0.00 s	C	2023-08-17 15:25:50

#	User	Runtime	Language	Date
1	Anders Lapiki	0.02 s	C#	2022-09-23 17:06:30
2	Ricardo H Guerrero Lara	0.02 s	C#	2022-10-18 23:53:50
3	Regina Taboada Dovalina	0.02 s	C#	2022-10-18 23:54:35
4	Ana María Esteva Sarralde	0.02 s	C#	2022-10-18 23:54:57
5	Fernando Pablo Sánchez Carral	0.02 s	C#	2022-10-18 23:55:20
6	Diego León Soria	0.02 s	C#	2022-10-18 23:55:29
7	Manuel Harari López	0.02 s	C#	2022-10-18 23:55:45
8	Santiago Hahn Farjí	0.02 s	C#	2022-10-18 23:56:11
9	Arturo Gallardo Sanders	0.02 s	C#	2022-10-18 23:56:28
10	Julián López Valencia	0.02 s	C#	2022-10-18 23:57:04

#	User	Runtime	Language	Date
1	Chris Vilches	0.01 s	Go	2024-08-16 17:35:48
2	Norbert Voelker	0.02 s	Go	2022-09-23 22:55:28
3	William Skou Heidemann	0.03 s	Go	2022-09-23 18:11:02
4	Diamond	0.03 s	Go	2023-02-24 04:37:22

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2022-10-02 18:06:49
2	Steinar Simonnes	0.00 s	Haskell	2024-02-09 18:08:38
3	Ng Tek In	0.01 s	Haskell	2022-09-15 19:13:19
4	Rudy Matela	0.01 s	Haskell	2024-04-22 11:11:50
5	Hidden user	0.02 s	Haskell	2022-12-01 00:42:39

#	User	Runtime	Language	Date
1	Stela Palii	0.05 s	Java	2024-12-26 05:53:45
2	Sven Rönnbäck	0.06 s	Java	2022-12-09 16:02:11
3	Crystal Sharpe	0.06 s	Java	2023-02-05 21:31:47
4	Liam Keliher	0.07 s	Java	2023-07-27 01:04:10
5	Ranjith M	0.07 s	Java	2023-09-04 16:41:52
6	Hidden user	0.10 s	Java	2025-11-23 15:58:27
7	Hidden user	0.11 s	Java	2023-01-08 20:52:02
8	Rohan Lakhanpal	0.11 s	Java	2024-05-25 22:05:05
9	Patrick Handberg Jessen	0.12 s	Java	2022-09-23 17:38:54
10	Perrin Alaine-Sedano	0.12 s	Java	2022-11-14 04:35:04

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-10-25 17:01:44
2	Nicklas Utgaard	0.02 s	JavaScript (SpiderMonkey)	2023-12-02 18:25:11
3	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-08-04 23:32:30
4	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-01-30 10:36:33

#	User	Runtime	Language	Date
1	Timothy Gaede	0.53 s	Julia	2024-05-14 10:21:01
2	Danny Robinson	0.88 s	Julia	2023-11-25 17:19:47

#	User	Runtime	Language	Date
1	Aksel Holbek Sørbye	0.20 s	Kotlin	2022-09-20 19:44:53
2	Troy Warmboe	0.20 s	Kotlin	2023-04-12 23:45:09
3	Adam Rankin	0.20 s	Kotlin	2023-08-25 19:31:23
4	Martijn Muijsers	0.21 s	Kotlin	2024-06-03 07:23:58

#	User	Runtime	Language	Date
1	Erik Amirell Eklöf	0.04 s	Python 3	2022-09-11 11:27:46
2	Christofer Ohlsson	0.04 s	Python 3	2022-09-11 11:30:52
3	Inge Li Gørtz	0.04 s	Python 3	2022-09-13 10:20:09
4	Morten Clausen	0.04 s	Python 3	2022-09-23 16:40:11
5	Þór Breki Davíðsson	0.04 s	Python 3	2022-09-23 16:55:20
6	Asmus Tørsleff	0.04 s	Python 3	2022-09-23 17:08:58
7	Bjarke Brodin	0.04 s	Python 3	2022-09-23 17:09:58
8	Szymon Gałecki	0.04 s	Python 3	2022-09-23 17:13:10
9	Stefan Heinrich	0.04 s	Python 3	2022-09-23 17:13:51
10	Alexander Thoren	0.04 s	Python 3	2022-09-23 17:19:54

#	User	Runtime	Language	Date
1	Frederik Petersen	0.05 s	Ruby	2022-09-26 17:52:33
2	Frederik Spang	0.05 s	Ruby	2022-09-29 00:05:26
3	Miorel Palii	0.06 s	Ruby	2023-01-07 07:53:32
4	Thomas Feld	0.06 s	Ruby	2023-02-20 15:24:22
5	Andreas Severin Hauch Trøstrup	0.17 s	Ruby	2022-09-23 18:40:54

#	User	Runtime	Language	Date
1	Alice Ryhl	0.00 s	Rust	2022-09-11 11:10:12
2	Daniel Anker Hermansen	0.00 s	Rust	2022-09-24 14:22:11
3	Bas Dirks	0.00 s	Rust	2022-10-16 11:06:35

#	User	Length	Language	Date
1	Danny Robinson	103	Bash	2023-11-25 17:35:23

#	User	Length	Language	Date
1	Marcus Oscarsson	664	C	2022-11-02 20:25:45
2	Julian Duniec	760	C	2023-08-17 15:25:50
3	Adrian Borup	828	C	2022-09-23 16:53:53

#	User	Length	Language	Date
1	Ivanna Ferro	825	C#	2022-10-20 17:05:43
2	Diego León Soria	844	C#	2022-10-18 23:55:29
3	Julián López Valencia	850	C#	2022-10-18 23:57:04
4	Santiago Hahn Farjí	852	C#	2022-10-18 23:56:11
5	Bruno Daniel Hernández Chagoya	852	C#	2022-10-18 23:58:14
6	Julio Axel Montero Barrientos	854	C#	2022-10-18 23:58:35
7	Manuel Harari López	855	C#	2022-10-18 23:55:45
8	Elijah	883	C#	2023-04-03 21:49:55
9	Fernando Pablo Sánchez Carral	895	C#	2022-10-18 23:55:20
10	Ana María Esteva Sarralde	910	C#	2022-10-18 23:54:57

#	User	Length	Language	Date
1	Teikn Smith	168	C++	2022-09-17 05:33:38
2	Jesper Bech Christensen	251	C++	2022-09-24 12:41:40
3	Lee Zheng Han	251	C++	2023-01-13 19:18:09
4	Elias Lolck	278	C++	2022-09-11 11:34:44
5	206 13李祐瑞	286	C++	2025-01-22 15:19:07
6	Dmitry Lyubshin	310	C++	2023-04-06 13:45:45
7	Bogdan Vlad-Mihai	330	C++	2022-09-12 20:07:38
8	Markus Mathiasen	336	C++	2022-09-24 12:40:59
9	黃璟堯	340	C++	2024-01-02 19:46:37
10	Andreas Alberg	342	C++	2023-01-12 11:30:15

#	User	Length	Language	Date
1	Chris Vilches	409	Go	2024-08-16 17:39:51
2	William Skou Heidemann	590	Go	2022-09-23 18:11:02
3	Norbert Voelker	830	Go	2022-09-23 22:55:28
4	Diamond	1351	Go	2023-02-24 04:37:22

#	User	Length	Language	Date
1	Brent Yorgey	98	Haskell	2022-10-03 12:04:19
2	Rudy Matela	554	Haskell	2024-04-22 11:11:50
3	Steinar Simonnes	571	Haskell	2024-02-09 18:08:38
4	Hidden user	809	Haskell	2022-12-01 00:42:39
5	Ng Tek In	816	Haskell	2022-09-15 19:13:19

#	User	Length	Language	Date
1	Danielle Anne Ibañez	490	Java	2023-08-24 19:25:28
2	Jakob Hallotech	644	Java	2023-05-09 08:46:21
3	Suhas T. Nagar	662	Java	2023-01-04 00:30:33
4	Hidden user	675	Java	2025-11-23 15:58:27
5	Doug Goodman	720	Java	2022-09-19 16:01:49
6	Delight Lee	755	Java	2023-04-15 03:35:30
7	Josh Henderson	771	Java	2022-09-25 03:59:37
8	Andreas Furst	809	Java	2022-09-23 17:30:33
9	Dakota South	848	Java	2022-09-28 18:29:46
10	Patrick Handberg Jessen	880	Java	2022-09-23 17:38:54

#	User	Length	Language	Date
1	Jimmy Gustafsson	147	JavaScript (SpiderMonkey)	2024-08-04 23:32:30
2	Bjørn Chr. Soltvedt	171	JavaScript (SpiderMonkey)	2022-10-25 17:11:49
3	Christian Pilegaard Cederquist	345	JavaScript (SpiderMonkey)	2023-01-30 10:36:33
4	Nicklas Utgaard	1001	JavaScript (SpiderMonkey)	2023-12-02 18:25:11

#	User	Length	Language	Date
1	Danny Robinson	130	Julia	2023-11-25 17:19:47
2	Timothy Gaede	467	Julia	2024-05-14 10:21:01

#	User	Length	Language	Date
1	Adam Rankin	475	Kotlin	2023-08-25 19:31:23
2	Aksel Holbek Sørbye	619	Kotlin	2022-09-20 19:44:53
3	Troy Warmboe	765	Kotlin	2023-04-12 23:45:09
4	Martijn Muijsers	930	Kotlin	2024-06-03 07:23:58

#	User	Length	Language	Date
1	David Aldenbro	115	Python 3	2025-08-25 21:21:01
2	Peter Stauder	119	Python 3	2022-09-25 14:03:40
3	Ahmed Chamseddine	123	Python 3	2024-08-09 23:57:17
4	Lee Isaac	138	Python 3	2022-11-06 21:04:32
5	Yong Mao	162	Python 3	2023-01-19 02:53:29
6	Lex Janssens	165	Python 3	2023-06-27 12:05:15
7	Caeden Whitaker	172	Python 3	2023-06-07 18:34:41
8	Thibault Raffaillac	172	Python 3	2024-08-01 14:49:59
9	Tan Yi Long	172	Python 3	2025-04-28 09:46:16
10	Hrant Hovhannisyan	184	Python 3	2025-05-22 11:23:32

#	User	Length	Language	Date
1	Thomas Feld	78	Ruby	2023-02-20 15:24:58
2	Frederik Petersen	99	Ruby	2022-09-26 17:58:24
3	Frederik Spang	111	Ruby	2022-09-29 00:05:26
4	Andreas Severin Hauch Trøstrup	145	Ruby	2022-09-23 18:40:54
5	Miorel Palii	202	Ruby	2023-01-07 07:53:32

#	User	Length	Language	Date
1	Daniel Anker Hermansen	789	Rust	2022-09-24 14:22:11
2	Alice Ryhl	1026	Rust	2022-09-11 11:10:12
3	Bas Dirks	1865	Rust	2022-10-16 11:06:35

Solution running time distribution