Problem O
Which Number Kind Is It? — Problem Statistics

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Submissions	2558
Accepted submissions	1201
Submission ratio	46.95%
Authors	1048
Full solves [?]	995
Full solve Ratio	94.94%

#	User	Runtime	Language	Date
1	Edson Alves	0.30 s	APL	2025-01-08 16:07:42

#	User	Runtime	Language	Date
1	Danny Robinson	0.05 s	Bash	2024-11-13 01:22:07

#	User	Runtime	Language	Date
1	Joacim Wärn	0.00 s	C	2025-04-26 22:23:17
2	Hidden user	0.00 s	C	2025-06-11 23:42:21
3	Robert Lowe	0.01 s	C	2024-11-09 19:54:15
4	Nihat Altiparmak	0.01 s	C	2024-11-09 20:45:50
5	Indah Mbah	0.01 s	C	2024-11-12 09:59:59
6	Florian ten Napel	0.01 s	C	2024-11-14 16:25:16
7	Hidden user	0.01 s	C	2024-11-19 16:49:16
8	Enzo Ruggeri Isotton	0.01 s	C	2024-11-21 20:33:13
9	Hidden user	0.01 s	C	2024-12-01 16:57:38
10	Karl-Johan Holterberg	0.01 s	C	2024-12-08 01:51:08

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	C#	2024-11-15 13:25:16
2	KIRA BELMONT	0.19 s	C#	2025-06-14 18:55:07
3	Deci Bel	0.20 s	C#	2024-11-12 19:38:31
4	Martin Jentoft	0.20 s	C#	2024-12-27 13:14:57
5	Michael Damsgaard	0.21 s	C#	2024-11-15 01:19:58
6	Esty Crow	0.21 s	C#	2024-11-22 09:46:19
7	clarence chen	0.21 s	C#	2024-11-22 19:03:38
8	John Kuroda	0.21 s	C#	2025-01-18 07:27:15
9	Mark Nickelsen	0.21 s	C#	2025-11-21 12:46:13
10	Kyle Briner	0.21 s	C#	2026-03-13 15:19:33

#	User	Runtime	Language	Date
1	Alexander Kravberg	0.00 s	C++	2025-01-13 23:34:53
2	Yutong Wang	0.00 s	C++	2026-03-02 22:18:29
3	Maxwell Chen	0.01 s	C++	2024-11-09 19:04:32
4	Daniel Chen	0.01 s	C++	2024-11-09 19:10:08
5	Tùng Hoàng Lâm	0.01 s	C++	2024-11-10 02:09:19
6	Hidden user	0.01 s	C++	2024-11-10 10:30:52
7	Frans Meulenbroeks	0.01 s	C++	2024-11-10 17:06:16
8	Harry Zhou	0.01 s	C++	2024-11-10 23:50:55
9	Leszek Hanusiak	0.01 s	C++	2024-11-11 11:32:32
10	Minh Nguyễn Xuân	0.01 s	C++	2024-11-11 20:14:09

#	User	Runtime	Language	Date
1	Frank Endriss	0.89 s	COBOL	2024-12-11 14:49:20

#	User	Runtime	Language	Date
1	Norvell Spearman	0.26 s	Common Lisp	2024-12-19 05:35:39

#	User	Runtime	Language	Date
1	Hidden user	0.48 s	F#	2024-12-12 05:28:04

#	User	Runtime	Language	Date
1	Norbert Voelker	0.01 s	Go	2024-11-14 22:40:12
2	Dylan	0.15 s	Go	2025-10-07 22:44:42
3	Jimmy Nejtron	0.98 s	Go	2024-11-11 13:34:29
4	Felix Dallmeyer	1.11 s	Go	2024-11-23 17:27:38

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.02 s	Haskell	2024-11-11 08:36:30
2	Brent Yorgey	0.14 s	Haskell	2024-11-09 19:20:07
3	Jan Hrček	0.14 s	Haskell	2024-12-03 09:39:43
4	Timur Khazhiev	0.14 s	Haskell	2024-12-31 12:54:25
5	Hidden user	0.16 s	Haskell	2024-11-28 19:46:13
6	Lukas Viering	0.28 s	Haskell	2025-02-20 20:24:10
7	Ng Tek In	0.34 s	Haskell	2024-11-22 17:07:45
8	Christopher Whelan	0.38 s	Haskell	2025-01-01 03:54:10

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.06 s	Java	2024-11-11 20:13:09
2	Guangyi Zhou	0.07 s	Java	2024-12-01 12:32:32
3	Hidden user	0.15 s	Java	2024-11-10 15:31:16
4	Einar Þór Ívarsson	0.15 s	Java	2025-03-27 17:57:16
5	Ben Cobb	0.17 s	Java	2025-04-04 23:50:45
6	Martha E.	0.17 s	Java	2025-11-10 01:04:23
7	Alexander Matheson	0.18 s	Java	2025-02-06 00:26:05
8	Nicholas Nagy	0.18 s	Java	2025-02-06 01:18:29
9	Luis Varona	0.19 s	Java	2025-02-06 00:44:22
10	Brenna Lauren Tan Jia Ern	0.19 s	Java	2026-01-04 18:29:38

#	User	Runtime	Language	Date
1	Hidden user	0.48 s	JavaScript (Node.js)	2024-11-10 22:08:46

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.19 s	JavaScript (SpiderMonkey)	2024-11-09 19:38:23
2	Evan Magill	0.19 s	JavaScript (SpiderMonkey)	2024-11-20 00:25:20
3	Zach Tschetter	0.19 s	JavaScript (SpiderMonkey)	2025-01-24 20:31:47
4	Christian Pilegaard Cederquist	0.20 s	JavaScript (SpiderMonkey)	2024-11-12 07:34:07
5	Quoc Anh Khoa Nguyen	0.20 s	JavaScript (SpiderMonkey)	2025-01-24 20:32:43
6	Ben Armstrong	0.20 s	JavaScript (SpiderMonkey)	2025-08-10 02:29:36
7	Jimmy Gustafsson	0.21 s	JavaScript (SpiderMonkey)	2024-12-05 23:18:00

#	User	Runtime	Language	Date
1	Timothy Gaede	1.27 s	Julia	2025-03-20 07:54:01

#	User	Runtime	Language	Date
1	Adam Rankin	0.80 s	Kotlin	2024-11-22 04:18:38
2	Chris Johnson	1.33 s	Kotlin	2025-10-07 23:32:06

#	User	Runtime	Language	Date
1	Nino Bašić	0.17 s	Nim	2024-11-11 17:37:49

#	User	Runtime	Language	Date
1	Sebastian Banert	0.13 s	OCaml	2024-11-10 22:58:26

#	User	Runtime	Language	Date
1	Hidden user	0.34 s	Odin	2025-04-24 00:55:05

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.02 s	Pascal	2025-02-02 10:11:53

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.68 s	Prolog	2025-01-23 11:35:32

#	User	Runtime	Language	Date
1	Jiaming Kong	0.06 s	Python 3	2025-06-26 06:26:01
2	Simen Sørensen	0.07 s	Python 3	2024-11-10 14:11:09
3	Stanley Zhong	0.08 s	Python 3	2024-11-09 19:12:44
4	Petr	0.08 s	Python 3	2024-11-10 01:59:49
5	Firman Syah	0.08 s	Python 3	2024-11-10 03:05:26
6	Ram Basnet	0.08 s	Python 3	2024-11-11 06:43:36
7	Andrew Tapia	0.09 s	Python 3	2024-11-09 22:51:52
8	Rebecca Jackson	0.09 s	Python 3	2024-11-11 19:13:08
9	Arnav Upadhyay	0.09 s	Python 3	2024-11-23 14:36:00
10	Anh Le Manh Duc	0.09 s	Python 3	2024-11-26 09:03:19

#	User	Runtime	Language	Date
1	Eugen Neagoe	0.16 s	Ruby	2026-01-20 01:37:09
2	Miorel Palii	0.17 s	Ruby	2024-11-12 09:23:57
3	Thomas Feld	0.21 s	Ruby	2025-01-27 15:23:13

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-11-10 14:57:19
2	Artur Khuziakhmetov	0.01 s	Rust	2025-02-13 10:52:23
3	Pankajkumar Patro	0.12 s	Rust	2024-11-10 16:38:34
4	David Rasch	0.12 s	Rust	2025-01-17 16:15:30
5	Erik Magnusson	0.12 s	Rust	2025-01-19 21:32:44
6	Nathaniel Risum	0.12 s	Rust	2025-02-24 19:59:29
7	Gabriella Gloria	0.12 s	Rust	2025-04-22 20:53:36
8	Isak Jägberg	0.13 s	Rust	2024-11-11 12:02:31
9	Yutong Wang	0.13 s	Rust	2024-12-05 20:07:42
10	Bas Dirks	0.13 s	Rust	2024-12-25 21:25:40

#	User	Runtime	Language	Date
1	Grettir Heimisson	0.00 s	Zig	2025-11-06 16:21:13

#	User	Length	Language	Date
1	Edson Alves	393	APL	2025-01-08 16:07:42

#	User	Length	Language	Date
1	Danny Robinson	67	Bash	2024-11-13 01:22:07

#	User	Length	Language	Date
1	Robert Lowe	370	C	2024-11-09 19:54:15
2	Enzo Ruggeri Isotton	380	C	2024-11-21 20:33:13
3	KARTHIKAA K	424	C	2025-04-14 16:22:37
4	THARANI G	445	C	2025-04-10 17:35:13
5	MADHUMITHA K	450	C	2025-04-09 13:24:43
6	Gabriel Lavier	451	C	2024-12-18 15:12:17
7	HARITHA S R	451	C	2025-04-15 15:28:55
8	Hidden user	455	C	2025-04-20 07:42:06
9	Fereshta Hasanzada	478	C	2025-04-16 10:28:51
10	Hidden user	481	C	2025-04-22 08:11:23

#	User	Length	Language	Date
1	Esty Crow	724	C#	2024-11-22 09:46:19
2	clarence chen	756	C#	2024-11-22 19:03:38
3	Գոռ Բաղդասարյան	782	C#	2024-11-11 13:22:12
4	Hidden user	848	C#	2024-11-15 12:48:36
5	Michael Damsgaard	850	C#	2024-11-15 01:19:58
6	John Kuroda	871	C#	2025-01-18 07:27:15
7	Mark Nickelsen	900	C#	2025-11-21 12:46:13
8	Nicholas Hood	1046	C#	2024-11-10 02:05:30
9	Martin Jentoft	1059	C#	2024-12-27 13:14:57
10	Kyle Briner	1127	C#	2026-03-13 15:19:33

#	User	Length	Language	Date
1	Frans Meulenbroeks	145	C++	2024-11-10 17:10:04
2	Teikn Smith	259	C++	2024-11-10 07:04:15
3	Nathan Duncan	303	C++	2024-11-09 19:43:09
4	Brandon Lau	314	C++	2025-01-24 10:28:22
5	Yung Chi Li	323	C++	2024-11-09 20:41:31
6	Adrian Alexander Calero Cordero	326	C++	2024-11-09 19:14:45
7	Florian Cliquet	342	C++	2024-11-24 04:26:09
8	mud players	349	C++	2024-11-09 23:02:58
9	Frederik Vase	355	C++	2024-12-29 01:50:09
10	Dominyka Sasnauskaitė	359	C++	2025-01-26 15:38:55

#	User	Length	Language	Date
1	Frank Endriss	6635	COBOL	2024-12-11 14:49:20

#	User	Length	Language	Date
1	Norvell Spearman	772	Common Lisp	2024-12-19 05:35:39

#	User	Length	Language	Date
1	Hidden user	399	F#	2024-12-12 05:28:04

#	User	Length	Language	Date
1	Felix Dallmeyer	453	Go	2024-11-23 17:27:38
2	Dylan	594	Go	2025-10-07 22:44:42
3	Jimmy Nejtron	619	Go	2024-11-11 13:34:29
4	Norbert Voelker	822	Go	2024-11-14 22:40:12

#	User	Length	Language	Date
1	Lukas Viering	345	Haskell	2025-02-20 20:24:10
2	Brent Yorgey	389	Haskell	2024-11-09 19:20:07
3	Christopher Whelan	416	Haskell	2025-01-01 03:54:10
4	Jan Hrček	435	Haskell	2024-12-03 09:39:43
5	Timur Khazhiev	466	Haskell	2024-12-31 12:54:25
6	Hidden user	611	Haskell	2024-11-28 19:46:13
7	Steinar Simonnes	740	Haskell	2024-11-11 08:33:46
8	Ng Tek In	1503	Haskell	2024-11-22 17:07:45

#	User	Length	Language	Date
1	Raymond Arrington	394	Java	2024-11-18 16:26:08
2	Trương Thanh Hải	487	Java	2024-11-21 15:16:23
3	wyatt wilson	492	Java	2026-01-12 17:18:17
4	Hidden user	526	Java	2025-02-07 21:49:22
5	Mas simo	535	Java	2024-11-11 19:42:22
6	Thomas Anung Basuki	535	Java	2025-05-14 07:50:23
7	Terry Morris	555	Java	2025-12-09 22:01:23
8	Evan Jones	558	Java	2025-02-07 21:22:02
9	Ron Offengenden	563	Java	2025-02-07 21:31:06
10	Derek Rimkus	568	Java	2025-09-23 18:52:32

#	User	Length	Language	Date
1	Hidden user	870	JavaScript (Node.js)	2024-11-10 22:08:46

#	User	Length	Language	Date
1	Jimmy Gustafsson	89	JavaScript (SpiderMonkey)	2024-12-05 23:18:00
2	Bjørn Chr. Soltvedt	123	JavaScript (SpiderMonkey)	2024-11-09 19:40:38
3	Evan Magill	155	JavaScript (SpiderMonkey)	2024-11-20 00:25:20
4	Ben Armstrong	203	JavaScript (SpiderMonkey)	2025-08-10 02:29:36
5	Christian Pilegaard Cederquist	222	JavaScript (SpiderMonkey)	2024-11-12 07:34:07
6	Zach Tschetter	251	JavaScript (SpiderMonkey)	2025-02-20 20:22:31
7	Quoc Anh Khoa Nguyen	289	JavaScript (SpiderMonkey)	2025-01-24 20:32:43

#	User	Length	Language	Date
1	Timothy Gaede	340	Julia	2025-03-20 07:54:01

#	User	Length	Language	Date
1	Adam Rankin	451	Kotlin	2024-11-22 04:18:38
2	Chris Johnson	887	Kotlin	2025-10-07 23:32:06

#	User	Length	Language	Date
1	Nino Bašić	456	Nim	2024-11-11 17:37:49

#	User	Length	Language	Date
1	Sebastian Banert	405	OCaml	2024-11-10 22:58:26

#	User	Length	Language	Date
1	Hidden user	500	Odin	2025-04-24 00:55:05

#	User	Length	Language	Date
1	Ingemar Ragnemalm	404	Pascal	2025-02-02 10:11:53

#	User	Length	Language	Date
1	Andriy Zyevakov	3295	Prolog	2025-01-23 11:35:32

#	User	Length	Language	Date
1	Kevin Gomez	72	Python 3	2024-11-12 19:31:29
2	Thibault Raffaillac	79	Python 3	2025-01-14 11:23:00
3	Maxim Barbe	85	Python 3	2024-11-17 04:11:15
4	Hugo Morvan	100	Python 3	2024-11-14 22:20:58
5	Guillermo Garcia Ramos de la Rosa	100	Python 3	2024-12-04 21:19:15
6	Nicholas Russell Saerang	101	Python 3	2024-12-04 20:54:28
7	Si Jie Tan	101	Python 3	2025-12-31 23:53:51
8	Hidden user	104	Python 3	2025-01-29 12:09:41
9	Shashank Bhatt	110	Python 3	2024-11-10 03:37:44
10	Andriy Peleshchyshyn	115	Python 3	2025-10-23 21:51:04

#	User	Length	Language	Date
1	Thomas Feld	65	Ruby	2025-01-27 15:23:13
2	Miorel Palii	170	Ruby	2024-11-12 09:23:57
3	Eugen Neagoe	190	Ruby	2026-01-20 01:37:09

#	User	Length	Language	Date
1	Emil Dichmann	438	Rust	2025-08-22 21:51:15
2	Artur Khuziakhmetov	484	Rust	2025-02-13 10:39:37
3	Bas Dirks	533	Rust	2024-12-25 21:25:40
4	Pankajkumar Patro	607	Rust	2024-11-10 16:38:34
5	Isak Jägberg	657	Rust	2024-11-11 12:02:31
6	David Rasch	757	Rust	2025-01-17 16:15:30
7	Nathaniel Risum	778	Rust	2025-02-24 19:53:44
8	Yutong Wang	916	Rust	2024-12-05 20:07:42
9	Max Hu	1087	Rust	2025-07-01 23:47:45
10	Gabriella Gloria	1820	Rust	2025-04-22 20:53:36

#	User	Length	Language	Date
1	Grettir Heimisson	2554	Zig	2025-11-06 15:50:16

Solution running time distribution