Problem A
Ultimate Binary Watch — Problem Statistics

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Submissions	3612
Accepted submissions	1385
Submission ratio	38.34%
Authors	1362
Full solves [?]	1243
Full solve Ratio	91.26%

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.02 s	C#	2022-02-28 18:04:26
2	Benny Antonsson	0.02 s	C#	2022-02-28 22:24:22
3	Jacob Carlsson	0.02 s	C#	2022-03-01 07:55:50
4	Kevin Miranda	0.02 s	C#	2022-03-03 16:32:42
5	Rickard Bemm	0.02 s	C#	2022-04-04 23:38:29
6	Gustav Junedahl	0.02 s	C#	2022-04-23 16:05:56
7	Van Nguyen	0.02 s	C#	2022-05-03 20:51:49
8	Eric Weiss	0.02 s	C#	2022-05-06 20:42:23
9	Göran Andersson	0.02 s	C#	2022-05-08 00:41:36
10	Владимир Хилько	0.02 s	C#	2022-05-12 07:35:06

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-06-11 19:46:59

#	User	Runtime	Language	Date
1	Michael Lapan	0.02 s	Go	2022-08-15 15:03:26
2	Hidden user	0.02 s	Go	2022-10-09 01:08:03
3	Yitian Wang	0.02 s	Go	2023-02-03 04:23:48
4	Andreas Gottschalk Krath	0.07 s	Go	2022-04-28 22:39:53
5	Jonathan Hallström	0.08 s	Go	2022-03-01 15:47:06
6	Ian Howell	0.08 s	Go	2022-03-07 23:36:47
7	Resa Renaldy	0.08 s	Go	2022-03-11 14:45:01
8	Norbert Voelker	0.08 s	Go	2022-03-13 23:51:48

#	User	Runtime	Language	Date
1	Ng Tek In	0.00 s	Haskell	2022-08-08 16:31:31
2	Jan Hrček	0.00 s	Haskell	2022-09-03 10:04:45
3	Lars Brünjes	0.00 s	Haskell	2023-01-28 22:55:51
4	Charley Sheaffer	0.00 s	Haskell	2023-11-05 14:53:36
5	Steinar Simonnes	0.00 s	Haskell	2024-02-04 18:14:51
6	Brent Yorgey	0.01 s	Haskell	2022-02-27 22:17:16
7	Scott Dauer	0.01 s	Haskell	2022-03-03 02:30:23
8	Daniel Cabral	0.01 s	Haskell	2022-03-03 10:01:56
9	Øyvind Almli	0.01 s	Haskell	2022-03-12 20:55:48
10	Phan Ngọc Tiên	0.01 s	Haskell	2022-03-20 16:15:15

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Java	2026-01-18 07:10:32
2	Kevin Xu	0.06 s	Java	2022-02-26 19:26:51
3	Sven Rönnbäck	0.06 s	Java	2022-02-27 11:31:19
4	Crystal Sharpe	0.06 s	Java	2022-03-03 00:54:46
5	Collin Jakubik	0.06 s	Java	2022-03-06 00:18:44
6	Kyle Kelly	0.06 s	Java	2022-03-07 04:17:14
7	Stela Palii	0.06 s	Java	2022-03-07 06:21:19
8	Sawyer Stanley	0.06 s	Java	2022-03-13 15:32:31
9	Logan Pipes	0.06 s	Java	2022-03-14 14:00:40
10	Anish Kambhampati	0.06 s	Java	2022-03-28 23:33:18

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2025-02-18 23:15:25
2	Hidden user	0.05 s	JavaScript (Node.js)	2024-09-17 00:36:51
3	Vu Van Dung	0.08 s	JavaScript (Node.js)	2022-09-14 20:33:26
4	Yosef worku	0.08 s	JavaScript (Node.js)	2022-11-24 08:36:17
5	Klemen Randl	0.09 s	JavaScript (Node.js)	2022-07-07 19:22:42
6	John	0.09 s	JavaScript (Node.js)	2022-07-15 06:33:58
7	Samuel Högfeldt	0.09 s	JavaScript (Node.js)	2022-07-18 21:37:11
8	Sofonias Abathun	0.09 s	JavaScript (Node.js)	2022-11-24 08:43:19
9	Ephrem Demelash	0.09 s	JavaScript (Node.js)	2022-11-24 09:38:11
10	Lioul Behailu Desta	0.09 s	JavaScript (Node.js)	2022-11-24 09:59:53

#	User	Runtime	Language	Date
1	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-08-15 13:55:59
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-12-31 10:45:21
3	Nicklas Utgaard	0.02 s	JavaScript (SpiderMonkey)	2023-01-01 19:41:49
4	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2022-03-01 23:28:53

#	User	Runtime	Language	Date
1	Timothy Gaede	0.58 s	Julia	2024-04-02 06:24:07
2	Danny Robinson	0.63 s	Julia	2023-09-04 09:24:13

#	User	Runtime	Language	Date
1	Jacob Huebner	0.11 s	Kotlin	2022-02-28 03:45:45
2	Benjamin Laurence Erickson	0.16 s	Kotlin	2022-11-08 19:33:56
3	Troels Bjerre Lund	0.17 s	Kotlin	2022-03-27 21:45:04
4	Emil Wihlander	0.17 s	Kotlin	2023-07-25 21:57:16
5	Nicholas Johnson	0.18 s	Kotlin	2022-02-26 19:09:52
6	Martijn Muijsers	0.18 s	Kotlin	2024-05-31 20:01:08
7	Emil Eriksmoen Stensland	0.19 s	Kotlin	2022-03-08 22:10:17
8	Troy Warmboe	0.19 s	Kotlin	2023-04-11 04:48:23
9	Adam Rankin	0.19 s	Kotlin	2023-05-09 00:28:36
10	Magnus Tønnessen	0.20 s	Kotlin	2022-09-11 23:48:28

#	User	Runtime	Language	Date
1	Matthew Wilbern	0.00 s	Lua	2024-09-08 12:27:03

#	User	Runtime	Language	Date
1	Hovig Manjikian	0.00 s	OCaml	2022-05-02 12:03:40

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2022-03-17 13:30:36
2	David Connolly	0.00 s	Pascal	2022-04-05 01:15:19

#	User	Runtime	Language	Date
1	Oli Gustafsson	0.01 s	PHP	2022-06-03 17:58:41
2	Andre Wahyudi	0.01 s	PHP	2022-09-26 06:56:57

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2022-08-21 20:58:47
2	Hakan Kjellerstrand	0.03 s	Prolog	2023-01-30 00:06:58

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-06-20 15:13:05
2	Renate	0.02 s	Python 2	2022-08-14 01:17:40
3	Yanmarshus Bachtiar	0.03 s	Python 2	2022-03-12 12:53:46
4	Johan Lyts	0.03 s	Python 2	2022-03-12 15:05:03
5	Gibransyah	0.03 s	Python 2	2022-03-27 07:11:02

#	User	Runtime	Language	Date
1	Frederik Peter Høngaard	0.04 s	Python 3	2022-06-04 23:17:34
2	Kelly Dance	0.04 s	Python 3	2022-06-05 00:01:46
3	Carl Harrison	0.04 s	Python 3	2022-06-06 12:25:45
4	Gustav Wass	0.04 s	Python 3	2022-06-08 13:47:11
5	Hugo Falkman	0.04 s	Python 3	2022-06-10 22:13:22
6	Lucca Dias	0.04 s	Python 3	2022-06-17 01:32:35
7	Hasan Kalzi	0.04 s	Python 3	2022-06-20 15:12:50
8	Suus Brommer	0.04 s	Python 3	2022-06-27 09:17:00
9	Md Amiruzzaman	0.04 s	Python 3	2022-07-14 15:04:06
10	Adrian Elinow	0.04 s	Python 3	2022-07-14 19:54:33

#	User	Runtime	Language	Date
1	Patrick Elsen	0.05 s	Ruby	2022-09-30 23:59:00
2	Noah Hessen Bjerke	0.06 s	Ruby	2022-11-21 12:44:08
3	Thomas Feld	0.06 s	Ruby	2023-02-14 12:29:30
4	Clement Oh	0.06 s	Ruby	2023-10-14 08:50:20

#	User	Length	Language	Date
1	Matthew Weston	343	C	2022-02-28 15:02:36
2	arda atci	403	C	2022-04-12 21:31:47
3	Ximun Castoreo	504	C	2022-04-13 14:00:32
4	Aymane Laaroui	513	C	2023-02-05 05:53:00
5	Andrew Roberts	522	C	2022-05-15 22:00:20
6	Alex Gougeon	544	C	2022-02-26 19:21:54
7	Shriraam U V	582	C	2025-03-31 04:24:56
8	紅茶	611	C	2023-04-25 06:05:28
9	Mirel Cosulschi	629	C	2025-03-21 22:05:27
10	Brian lua	696	C	2022-05-06 19:53:33

#	User	Length	Language	Date
1	traxex	203	C#	2024-05-26 16:16:31
2	Gregory Sinclair	229	C#	2023-11-18 18:08:28
3	Esty Crow	563	C#	2022-10-06 06:29:55
4	Anthony Ye	572	C#	2022-12-11 19:24:49
5	Gustav Junedahl	585	C#	2022-04-23 16:05:56
6	Göran Andersson	589	C#	2022-05-08 00:41:36
7	Владимир Хилько	734	C#	2022-05-12 07:35:06
8	Mark Meysenburg	958	C#	2023-02-02 17:46:42
9	Hidden user	974	C#	2022-09-01 12:38:26
10	Van Nguyen	1058	C#	2022-05-03 20:51:49

#	User	Length	Language	Date
1	Alyson Noronha	262	C++	2023-11-24 18:46:23
2	Đậu Huy Minh	297	C++	2022-10-09 18:28:53
3	Ethan Partidas	334	C++	2022-05-19 01:40:16
4	Hyunjun Lee	341	C++	2022-10-20 23:48:33
5	Samuel Tan	342	C++	2022-12-05 19:24:21
6	Grae Yeandle	357	C++	2022-02-27 15:33:57
7	Aloysius Yong	371	C++	2023-01-29 04:23:53
8	JUSTIN TAN	373	C++	2022-08-20 04:23:47
9	Ritul Kumar Singh	379	C++	2024-05-09 14:07:01
10	Nguyen Xuan Tung	382	C++	2022-03-06 14:22:50

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	362	F#	2022-06-11 19:46:59

#	User	Length	Language	Date
1	Jonathan Hallström	431	Go	2022-03-01 15:47:06
2	Resa Renaldy	656	Go	2022-03-11 14:45:01
3	Norbert Voelker	718	Go	2022-03-13 23:51:48
4	Michael Lapan	862	Go	2022-08-15 15:03:26
5	Hidden user	902	Go	2022-10-05 22:44:26
6	Ian Howell	985	Go	2022-03-07 23:36:47
7	Andreas Gottschalk Krath	1361	Go	2022-04-28 22:39:53
8	Yitian Wang	1456	Go	2023-02-03 04:23:48

#	User	Length	Language	Date
1	Phan Ngọc Tiên	289	Haskell	2022-03-20 16:15:15
2	Charley Sheaffer	386	Haskell	2023-11-05 14:53:36
3	Brent Yorgey	480	Haskell	2022-02-27 22:17:16
4	Ng Tek In	480	Haskell	2022-08-08 16:31:31
5	Steinar Simonnes	496	Haskell	2024-02-04 18:14:51
6	Øyvind Almli	690	Haskell	2022-03-12 20:55:48
7	Jan Hrček	728	Haskell	2022-09-03 10:04:45
8	Simon Gutgesell	920	Haskell	2022-05-24 19:04:59
9	Daniel Cabral	921	Haskell	2022-03-03 10:01:56
10	Scott Dauer	1074	Haskell	2022-03-03 02:30:23

#	User	Length	Language	Date
1	Padjie	288	Java	2022-04-19 21:12:43
2	Kevin Kauffman	460	Java	2022-02-27 19:43:16
3	Markus Bao	604	Java	2022-04-24 19:07:49
4	Crystal Sharpe	617	Java	2022-03-12 19:35:32
5	Nicholas Bui	658	Java	2022-06-05 17:15:20
6	Hunter Mullen	695	Java	2025-02-20 06:16:07
7	Jonathan Ball	705	Java	2022-02-26 21:13:47
8	Cameron Hahnfeldt	731	Java	2022-02-26 19:51:17
9	Sam Huynh	762	Java	2022-03-30 00:35:08
10	Ronak Mistry	762	Java	2023-02-14 21:12:44

#	User	Length	Language	Date
1	Lioul Behailu Desta	572	JavaScript (Node.js)	2022-11-25 19:36:12
2	Yosef worku	592	JavaScript (Node.js)	2022-11-24 08:36:17
3	Ephrem Demelash	602	JavaScript (Node.js)	2022-11-24 09:38:11
4	Jesper Svendgaard Åhman Hansen	640	JavaScript (Node.js)	2023-01-28 16:30:27
5	Vu Van Dung	661	JavaScript (Node.js)	2022-09-14 20:33:26
6	Kalle Teglstrup Wilsen	693	JavaScript (Node.js)	2023-02-05 17:57:34
7	Chris Wong	695	JavaScript (Node.js)	2022-03-15 16:01:44
8	Samuel Högfeldt	751	JavaScript (Node.js)	2022-07-18 21:37:11
9	John	832	JavaScript (Node.js)	2022-07-15 06:33:58
10	Hidden user	867	JavaScript (Node.js)	2023-09-14 05:23:05

#	User	Length	Language	Date
1	Jimmy Gustafsson	183	JavaScript (SpiderMonkey)	2022-08-15 13:55:59
2	Christian Pilegaard Cederquist	275	JavaScript (SpiderMonkey)	2022-12-31 10:45:21
3	Bjørn Chr. Soltvedt	439	JavaScript (SpiderMonkey)	2022-03-01 23:28:53
4	Nicklas Utgaard	662	JavaScript (SpiderMonkey)	2023-01-01 19:41:49

#	User	Length	Language	Date
1	Danny Robinson	107	Julia	2023-09-04 09:24:13
2	Timothy Gaede	1058	Julia	2024-04-02 06:24:07

#	User	Length	Language	Date
1	Troels Bjerre Lund	210	Kotlin	2022-03-27 21:45:04
2	Emil Wihlander	364	Kotlin	2023-07-25 21:57:16
3	Nicholas Johnson	441	Kotlin	2022-02-26 19:09:52
4	Jacob Huebner	442	Kotlin	2022-02-28 03:45:45
5	Benjamin Laurence Erickson	478	Kotlin	2022-11-08 19:33:56
6	Chris Johnson	497	Kotlin	2024-11-15 22:57:15
7	Adam Rankin	536	Kotlin	2023-05-09 00:28:36
8	Troy Warmboe	553	Kotlin	2023-04-11 04:48:23
9	Emil Eriksmoen Stensland	586	Kotlin	2022-03-08 22:10:17
10	Martijn Muijsers	749	Kotlin	2024-05-31 20:01:08

#	User	Length	Language	Date
1	Matthew Wilbern	764	Lua	2024-09-08 12:27:03

#	User	Length	Language	Date
1	Hovig Manjikian	1361	OCaml	2022-05-02 12:03:40

#	User	Length	Language	Date
1	Ingemar Ragnemalm	418	Pascal	2022-03-17 13:30:36
2	David Connolly	1126	Pascal	2022-04-05 01:15:19

#	User	Length	Language	Date
1	Oli Gustafsson	398	PHP	2022-06-03 17:58:41
2	Andre Wahyudi	1055	PHP	2022-09-26 06:56:57

#	User	Length	Language	Date
1	Hakan Kjellerstrand	435	Prolog	2023-01-30 00:06:58
2	Andriy Zyevakov	900	Prolog	2022-08-21 20:58:47

#	User	Length	Language	Date
1	Yanmarshus Bachtiar	317	Python 2	2022-03-12 12:53:46
2	Johan Lyts	324	Python 2	2022-03-12 15:05:03
3	Gibransyah	640	Python 2	2022-03-27 07:11:02
4	Renate	642	Python 2	2022-08-14 01:17:40
5	Hasan Kalzi	1577	Python 2	2022-03-01 15:04:48

#	User	Length	Language	Date
1	Benjamin Z White	85	Python 3	2023-05-20 22:00:23
2	Collin Simpson	95	Python 3	2025-03-18 01:27:05
3	ACMCSU	95	Python 3	2025-03-18 02:03:40
4	Thomas Feld	103	Python 3	2022-11-07 08:32:56
5	Morten Clausen	114	Python 3	2022-11-05 23:44:48
6	Hidden user	122	Python 3	2023-08-17 17:14:53
7	Artur Khuziakhmetov	124	Python 3	2023-06-15 12:23:24
8	Eduardo Vicente Petry	128	Python 3	2023-01-02 17:24:33
9	David Skocic	128	Python 3	2025-03-18 21:21:58
10	Adam Levav	131	Python 3	2023-01-19 19:57:48

#	User	Length	Language	Date
1	Thomas Feld	79	Ruby	2023-05-23 12:06:54
2	Clement Oh	125	Ruby	2023-10-14 08:50:20
3	Patrick Elsen	156	Ruby	2022-09-30 23:59:00
4	Noah Hessen Bjerke	366	Ruby	2022-11-21 12:44:08

#	User	Length	Language	Date
1	Bas Dirks	513	Rust	2022-02-27 09:17:22
2	Hampus Balldin	672	Rust	2023-01-20 22:47:13
3	David Rasch	710	Rust	2022-04-20 11:16:30
4	Vincent Lagerros	796	Rust	2025-02-06 15:44:07
5	Simon Reid	823	Rust	2023-02-01 05:53:20
6	Isak Jägberg	1061	Rust	2023-04-18 16:50:10
7	Magix	1125	Rust	2022-06-07 02:03:23
8	Kunwei Zhang	1239	Rust	2022-11-24 10:40:51
9	Eric Pinter	1262	Rust	2022-03-13 16:50:14
10	Brennan Craig	3407	Rust	2025-02-05 22:07:18

Solution running time distribution