Problem F
Ones — Problem Statistics

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Submissions	5065
Accepted submissions	1544
Submission ratio	30.48%
Authors	1335
Full solves [?]	1043
Full solve Ratio	78.13%

#	User	Runtime	Language	Date
1	Johannes Svensson	0.00 s	C	2009-12-06 10:26:39
2	Jesper Särnesjö	0.12 s	C	2007-12-04 13:09:44
3	Hidden user	0.12 s	C	2007-12-11 19:17:49
4	Christian Adåker	0.12 s	C	2007-12-25 17:12:56
5	David Björklund	0.12 s	C	2009-12-08 23:10:04
6	Johan Sannemo	0.12 s	C	2011-07-29 23:56:41
7	Hidden user	0.12 s	C	2016-11-04 21:22:19
8	Edgar Samuel Perea Domínguez	0.12 s	C	2016-11-25 21:58:21
9	Hidden user	0.12 s	C	2017-03-25 16:27:16
10	Hidden user	0.12 s	C	2017-05-17 18:22:47

#	User	Runtime	Language	Date
1	Patrik Lilja	0.13 s	C#	2015-01-13 23:52:38
2	Petra Marc	0.14 s	C#	2016-12-12 15:48:15
3	Hidden user	0.14 s	C#	2017-01-03 02:04:05
4	Johan Litsfeldt	0.15 s	C#	2021-03-20 21:05:52
5	Ugnius Skučas	0.19 s	C#	2016-10-15 12:04:30
6	Rasmus Brants	0.23 s	C#	2017-05-22 12:18:42
7	Tin Pavelić	0.24 s	C#	2016-03-08 15:54:48
8	Andrzej Krajniak	0.30 s	C#	2016-10-21 09:45:45
9	Daniel Materowski	0.42 s	C#	2016-10-25 22:57:48

#	User	Runtime	Language	Date
1	Fredrik Atmer	0.00 s	C++	2007-12-11 22:36:44
2	Hidden user	0.00 s	C++	2007-12-12 13:07:38
3	Hidden user	0.00 s	C++	2008-11-30 02:21:27
4	Henry Xia	0.00 s	C++	2018-11-06 05:58:56
5	Vincent Chow Zhi Yang	0.00 s	C++	2019-02-08 08:06:13
6	Nicholas Winschel	0.00 s	C++	2023-04-27 07:49:32
7	Niklas Sandén	0.00 s	C++	2023-07-04 23:44:07
8	Per Persson	0.01 s	C++	2015-06-25 13:26:55
9	Mårten Wiman	0.01 s	C++	2015-08-23 11:11:45
10	Joakim Blikstad	0.01 s	C++	2015-12-31 11:22:33

#	User	Runtime	Language	Date
1	Norbert Voelker	0.19 s	Go	2023-03-22 13:48:32
2	Hidden user	0.26 s	Go	2019-02-16 23:03:27
3	Patrik Lilja	0.29 s	Go	2015-01-13 23:56:13

#	User	Runtime	Language	Date
1	Fulano de Tal	0.01 s	Haskell	2022-01-20 00:27:52
2	Christian Leipe	0.18 s	Haskell	2016-03-09 11:39:24
3	Brent Yorgey	0.30 s	Haskell	2018-04-14 06:05:48
4	Jonathan Erikson	0.30 s	Haskell	2021-04-11 18:26:02
5	Oskar Segersvärd	0.33 s	Haskell	2015-01-10 12:42:28
6	Evan Wilde	0.48 s	Haskell	2017-03-09 04:13:53
7	Kári Tristan Helgason	0.67 s	Haskell	2014-12-10 11:24:12

#	User	Runtime	Language	Date
1	Fredrik Atmer	0.06 s	Java	2007-12-09 22:51:29
2	Amir Jahangard Rafsanjani	0.17 s	Java	2025-12-18 06:35:06
3	Simon Klein	0.18 s	Java	2013-05-09 17:08:19
4	Hanif Farahmand Mokarremi	0.19 s	Java	2011-12-18 02:01:07
5	Staffan Rydström	0.19 s	Java	2011-12-25 19:18:18
6	Carl Henrik Klåvus	0.19 s	Java	2013-05-16 19:13:54
7	Viktor Mattsson	0.19 s	Java	2014-12-10 21:10:10
8	Carl Eriksson	0.19 s	Java	2014-12-15 13:58:12
9	Sofie Thorsen	0.19 s	Java	2014-12-16 12:03:54
10	Bjørn Dons	0.19 s	Java	2018-12-20 19:24:04

#	User	Runtime	Language	Date
1	Hidden user	0.32 s	JavaScript (Node.js)	2019-03-07 15:24:57

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.08 s	JavaScript (SpiderMonkey)	2022-12-22 22:46:40
2	Isaac Saffold	0.12 s	JavaScript (SpiderMonkey)	2018-08-13 03:08:47
3	Christian Pilegaard Cederquist	0.14 s	JavaScript (SpiderMonkey)	2023-03-18 06:57:50
4	Johannes Jensen	0.16 s	JavaScript (SpiderMonkey)	2020-12-04 14:50:34
5	Jimmy Gustafsson	0.16 s	JavaScript (SpiderMonkey)	2022-09-07 20:16:49

#	User	Runtime	Language	Date
1	Hidden user	0.42 s	Julia	2025-03-20 17:31:38
2	Alexandre Charland	0.45 s	Julia	2025-02-20 15:56:45

#	User	Runtime	Language	Date
1	Jacob Huebner	0.28 s	Kotlin	2022-04-11 04:47:37
2	Hidden user	0.29 s	Kotlin	2020-02-06 23:52:00
3	Kelly Dance	0.33 s	Kotlin	2022-10-13 15:38:26
4	Adam Rankin	0.33 s	Kotlin	2023-05-15 05:18:51
5	Aksel Holbek Sørbye	0.33 s	Kotlin	2023-09-14 19:43:42
6	Adam Koprowski	0.34 s	Kotlin	2021-05-30 20:35:40
7	Whitt Sanders	0.34 s	Kotlin	2023-05-16 00:24:57
8	Phường Lên	0.38 s	Kotlin	2020-03-21 03:50:07
9	Sam Keyser	0.41 s	Kotlin	2022-04-11 04:35:02

#	User	Runtime	Language	Date
1	Renate	0.59 s	PHP	2023-08-31 10:28:41

#	User	Runtime	Language	Date
1	Andreas Serra	0.12 s	Python 2	2013-05-18 12:45:02
2	Noah Ó Donnaile	0.22 s	Python 2	2018-04-16 13:54:49
3	Ciara Godwin	0.22 s	Python 2	2018-04-16 14:40:43
4	Hermon Mulat	0.23 s	Python 2	2017-07-30 20:10:26
5	James Hamm	0.23 s	Python 2	2018-04-16 18:00:34
6	Денис Соболев	0.23 s	Python 2	2019-05-02 15:48:14
7	Sebastian Boldsen Jakobsen	0.23 s	Python 2	2019-11-20 18:11:09
8	Suchi Amalapurapu	0.23 s	Python 2	2020-03-30 09:25:35
9	William Taylor-Melanson	0.23 s	Python 2	2020-07-12 18:16:26
10	Hidden user	0.24 s	Python 2	2016-04-03 14:40:56

#	User	Runtime	Language	Date
1	Niklas Sandén	0.07 s	Python 3	2023-07-04 22:50:32
2	Teodor Bucht	0.08 s	Python 3	2023-07-04 07:19:53
3	Victor Song	0.15 s	Python 3	2021-06-19 11:51:48
4	Yip Jung Hon	0.18 s	Python 3	2021-06-12 14:03:06
5	Hidden user	0.19 s	Python 3	2023-08-21 23:03:16
6	Sidharth Sundar	0.22 s	Python 3	2023-02-12 16:15:14
7	Raymond Christopher	0.22 s	Python 3	2024-01-07 16:41:13
8	Florian ten Napel	0.22 s	Python 3	2024-11-27 20:01:32
9	UTM CS AI	0.24 s	Python 3	2024-10-02 21:03:54
10	Jan Pogačar	0.24 s	Python 3	2025-04-20 20:28:49

#	User	Runtime	Language	Date
1	Thomas Feld	0.56 s	Ruby	2023-01-27 13:09:44
2	Lee Tze Han	0.92 s	Ruby	2018-06-16 15:22:09

#	User	Runtime	Language	Date
1	Lucas Towers	0.12 s	Rust	2020-10-04 06:22:10
2	Muhammad Rais Fathin Mudzakir	0.12 s	Rust	2021-06-16 15:59:51
3	Artur Khuziakhmetov	0.12 s	Rust	2022-07-27 11:35:13
4	Hidden user	0.13 s	Rust	2020-03-15 14:05:33
5	Isak Jägberg	0.25 s	Rust	2022-01-11 09:39:22

#	User	Length	Language	Date
1	a_b__c	139	C	2021-01-28 04:26:17
2	pengin	199	C	2021-10-05 11:25:53
3	Jesper Särnesjö	203	C	2007-12-04 13:18:55
4	Christian Adåker	226	C	2007-12-25 17:12:56
5	Johan Sannemo	242	C	2011-07-29 23:56:41
6	Lionel KITIHOUN	262	C	2017-09-16 15:46:04
7	Hidden user	266	C	2007-12-11 19:33:06
8	Will Cosley	272	C	2023-11-01 20:13:40
9	Hidden user	273	C	2017-11-24 23:52:10
10	Rajul Srivastava	281	C	2020-11-14 16:07:07

#	User	Length	Language	Date
1	Rasmus Brants	576	C#	2017-05-22 12:18:42
2	Petra Marc	729	C#	2016-12-12 15:48:15
3	Ugnius Skučas	811	C#	2016-10-15 12:04:30
4	Tin Pavelić	1075	C#	2016-03-08 15:54:48
5	Hidden user	1096	C#	2017-01-03 02:04:05
6	Daniel Materowski	2045	C#	2016-10-25 22:57:48
7	Patrik Lilja	3367	C#	2015-01-13 23:52:38
8	Johan Litsfeldt	3375	C#	2021-03-20 21:05:52
9	Andrzej Krajniak	3399	C#	2016-10-21 09:45:45

#	User	Length	Language	Date
1	Joey Sherrill	136	C++	2025-03-07 22:54:56
2	Neal Zane	174	C++	2015-12-25 07:42:52
3	David Wärn	180	C++	2015-06-01 16:18:33
4	Håkan Terelius	182	C++	2007-12-03 21:41:23
5	David Avellan-Hultman	183	C++	2016-04-08 17:32:09
6	Chuck Fernández	184	C++	2016-11-25 21:52:55
7	Khawla Hbiech	193	C++	2019-03-14 09:25:52
8	Evan Michael Bailey	200	C++	2023-06-30 16:40:27
9	Lorena Hantig	201	C++	2021-07-05 08:25:20
10	Taulant Arapi	204	C++	2019-01-23 13:25:27

#	User	Length	Language	Date
1	Hidden user	319	Go	2019-02-16 23:03:27
2	Patrik Lilja	377	Go	2015-01-13 23:28:30
3	Norbert Voelker	484	Go	2023-03-22 13:48:32

#	User	Length	Language	Date
1	Jonathan Erikson	189	Haskell	2021-04-11 18:26:02
2	Christian Leipe	288	Haskell	2016-03-09 11:39:24
3	Brent Yorgey	369	Haskell	2018-04-14 06:05:48
4	Evan Wilde	391	Haskell	2017-03-09 04:13:53
5	Kári Tristan Helgason	423	Haskell	2014-12-10 11:24:12
6	Oskar Segersvärd	2551	Haskell	2015-01-10 12:42:28
7	Fulano de Tal	5607	Haskell	2022-01-20 00:27:52

#	User	Length	Language	Date
1	Evan Michael Bailey	306	Java	2021-09-17 21:20:34
2	Staffan Rydström	326	Java	2011-12-25 18:53:57
3	Hidden user	331	Java	2017-11-24 23:53:41
4	Doug Goodman	343	Java	2018-03-07 20:07:09
5	Adrian Koretski	349	Java	2017-11-24 23:51:59
6	Jasper Pillejera	357	Java	2019-02-02 08:30:08
7	Michael Bradet-Legris	374	Java	2016-02-18 00:11:41
8	Xun Su	377	Java	2016-11-04 22:17:42
9	Hidden user	387	Java	2017-03-28 11:30:08
10	Max Rosen	395	Java	2017-11-24 23:54:50

#	User	Length	Language	Date
1	Hidden user	498	JavaScript (Node.js)	2019-03-07 15:24:57

#	User	Length	Language	Date
1	Jimmy Gustafsson	86	JavaScript (SpiderMonkey)	2022-09-07 20:16:49
2	Christian Pilegaard Cederquist	193	JavaScript (SpiderMonkey)	2023-03-18 06:57:50
3	Johannes Jensen	340	JavaScript (SpiderMonkey)	2020-12-04 14:50:34
4	Isaac Saffold	659	JavaScript (SpiderMonkey)	2018-08-13 03:08:47
5	Bjørn Chr. Soltvedt	122208	JavaScript (SpiderMonkey)	2022-12-22 22:46:40

#	User	Length	Language	Date
1	Hidden user	98	Julia	2025-03-20 17:41:37
2	Alexandre Charland	181	Julia	2025-02-20 15:56:45

#	User	Length	Language	Date
1	Kelly Dance	235	Kotlin	2022-10-13 15:38:26
2	Phường Lên	298	Kotlin	2020-03-21 03:50:07
3	Aksel Holbek Sørbye	333	Kotlin	2023-09-14 19:43:42
4	Jacob Huebner	495	Kotlin	2022-04-11 04:47:37
5	Adam Koprowski	497	Kotlin	2021-05-30 20:35:40
6	Adam Rankin	508	Kotlin	2023-05-15 05:18:51
7	Hidden user	811	Kotlin	2020-02-06 23:52:00
8	Whitt Sanders	870	Kotlin	2023-05-16 00:24:57
9	Sam Keyser	1047	Kotlin	2022-04-11 04:35:02

#	User	Length	Language	Date
1	Renate	278	PHP	2023-08-31 10:38:54

#	User	Length	Language	Date
1	Thomas Feld	126	Python 2	2020-06-22 20:26:06
2	Lars Åström	143	Python 2	2018-11-05 22:34:45
3	Marco Zamboni	154	Python 2	2019-01-26 11:47:00
4	Hidden user	155	Python 2	2016-04-03 14:40:56
5	Jay Deng	155	Python 2	2018-09-17 23:05:43
6	Miguel Alfageme Sanchez	156	Python 2	2017-03-10 02:48:40
7	Yang Li	160	Python 2	2018-06-08 22:10:41
8	Jon Pavelich	160	Python 2	2019-03-12 01:51:05
9	Balder Sandstrøm	160	Python 2	2019-10-03 22:39:17
10	Harry Smidt	173	Python 2	2018-10-14 08:37:08

#	User	Length	Language	Date
1	Sterling Smith	70	Python 3	2025-03-07 23:14:24
2	Benjamin Z White	71	Python 3	2023-07-11 20:12:13
3	Peter Stauder	74	Python 3	2023-05-14 13:30:40
4	Kévin Dubrulle	89	Python 3	2025-03-14 07:44:06
5	Andreas Björklund	90	Python 3	2023-06-30 18:07:34
6	Christofer Ohlsson	91	Python 3	2022-10-20 17:20:51
7	Bo Stokes	91	Python 3	2024-10-29 15:59:02
8	Ahmed Chamseddine	94	Python 3	2025-07-01 09:55:58
9	Lee Isaac	97	Python 3	2022-11-14 14:36:32
10	Julius Thunström	101	Python 3	2023-07-05 19:20:11

#	User	Length	Language	Date
1	Thomas Feld	60	Ruby	2023-01-27 13:17:54
2	Lee Tze Han	259	Ruby	2018-06-16 15:22:09

#	User	Length	Language	Date
1	Artur Khuziakhmetov	444	Rust	2022-07-27 11:35:13
2	Lucas Towers	466	Rust	2020-10-04 06:22:10
3	Isak Jägberg	621	Rust	2022-01-11 09:39:22
4	Hidden user	662	Rust	2020-03-15 14:05:33
5	Muhammad Rais Fathin Mudzakir	4011	Rust	2021-06-16 15:59:51

Solution running time distribution