Problem A
Primary Register — Problem Statistics

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Submissions	1911
Accepted submissions	1192
Submission ratio	62.38%
Authors	1128
Accepted authors	1032
Author ratio	91.49%

#	User	Runtime	Language	Date
1	Bas te Kolste	0.02 s	C#	2015-07-28 14:48:19
2	Khin Nyunt	0.02 s	C#	2017-06-02 08:05:04
3	Liam Percy	0.02 s	C#	2018-04-20 08:42:05
4	Leo Carlén	0.02 s	C#	2019-11-02 12:06:13
5	Mikael Fiala-Lundström	0.02 s	C#	2021-05-27 01:43:45
6	Göran Andersson	0.02 s	C#	2022-05-21 15:20:12
7	Eric Weiss	0.02 s	C#	2022-09-09 16:37:13
8	Apurav Khare	0.03 s	C#	2021-10-06 06:25:27
9	Gustav Junedahl	0.03 s	C#	2022-04-26 09:46:38
10	Johan Ahlrik	0.04 s	C#	2023-07-05 18:55:17

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-05-11 15:41:40

#	User	Runtime	Language	Date
1	Chris Vilches	0.00 s	Go	2024-08-22 17:24:30
2	Norbert Voelker	0.08 s	Go	2021-05-08 20:22:33
3	Ian Howell	0.37 s	Go	2019-07-19 22:05:37

#	User	Runtime	Language	Date
1	Johan Meier	0.00 s	Haskell	2017-01-16 10:03:31
2	Atli Fannar Franklín	0.00 s	Haskell	2017-08-22 10:57:24
3	Brent Yorgey	0.00 s	Haskell	2017-11-17 06:00:13
4	Steinar Simonnes	0.00 s	Haskell	2024-02-12 15:34:26
5	Anthony Clark	0.01 s	Haskell	2017-03-02 01:47:44
6	Qi Ji	0.01 s	Haskell	2018-06-27 08:24:24
7	Hidden user	0.01 s	Haskell	2019-05-10 16:43:31
8	Hidden user	0.01 s	Haskell	2019-08-31 20:53:44
9	Quinn Flavel	0.01 s	Haskell	2021-01-16 00:39:07
10	Jan Hrček	0.01 s	Haskell	2021-03-17 16:05:41

#	User	Runtime	Language	Date
1	Simon Klein	0.05 s	Java	2012-01-11 19:31:27
2	Michael Sullivan	0.05 s	Java	2016-02-15 06:28:57
3	Erik Nyström	0.05 s	Java	2016-03-13 10:30:52
4	Simon Xue	0.05 s	Java	2016-04-16 05:57:44
5	Martijn Muijsers	0.05 s	Java	2016-10-16 15:51:53
6	Micah Stairs	0.05 s	Java	2016-11-05 00:10:43
7	Terrence Park	0.05 s	Java	2016-11-29 05:53:06
8	Michel Langeveld	0.05 s	Java	2016-12-03 21:29:28
9	David Brink	0.05 s	Java	2017-01-03 21:09:15
10	Liam Keliher	0.05 s	Java	2017-03-26 22:44:37

#	User	Runtime	Language	Date
1	Zachary Shilton	0.09 s	JavaScript (Node.js)	2022-06-15 13:49:10
2	Samuel Högfeldt	0.13 s	JavaScript (Node.js)	2022-08-04 18:26:34
3	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-11-29 06:17:22

#	User	Runtime	Language	Date
1	Adam Murphy	0.01 s	JavaScript (SpiderMonkey)	2016-03-23 04:27:59
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-10-30 22:32:42
3	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-11-06 21:23:27
4	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-29 19:42:15

#	User	Runtime	Language	Date
1	Timothy Gaede	0.50 s	Julia	2024-04-10 11:06:39

#	User	Runtime	Language	Date
1	Ola Sundell	0.15 s	Kotlin	2018-05-29 10:20:22
2	Neil Harmon	0.18 s	Kotlin	2019-06-07 15:12:51
3	Adam Rankin	0.18 s	Kotlin	2023-09-01 02:47:42
4	Matthew Lutze	0.21 s	Kotlin	2019-09-28 07:26:06
5	Troy Warmboe	0.22 s	Kotlin	2020-03-06 02:21:47

#	User	Runtime	Language	Date
1	Samuel Jefferis	0.00 s	OCaml	2020-12-15 00:05:45

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-02-24 11:19:26
2	Klimenok Artem	0.00 s	Pascal	2018-05-12 20:55:08

#	User	Runtime	Language	Date
1	Wayne	0.02 s	Python 3	2016-01-29 14:46:52
2	Sigurjón Freyr Viktorsson	0.02 s	Python 3	2016-05-13 12:54:53
3	Nathan Collins	0.02 s	Python 3	2016-07-13 21:53:17
4	Nicolas Marsceau	0.02 s	Python 3	2016-07-13 21:59:55
5	Hidden user	0.02 s	Python 3	2016-09-03 13:40:52
6	Christian Lindeström	0.02 s	Python 3	2016-10-12 19:58:57
7	Matthew Casserly	0.02 s	Python 3	2016-10-24 14:08:01
8	Tore Norderud	0.02 s	Python 3	2016-10-25 00:26:33
9	Josenildo Silva	0.02 s	Python 3	2017-01-30 01:10:43
10	Shawn Pacarar	0.02 s	Python 3	2017-02-15 22:43:55

#	User	Runtime	Language	Date
1	Erik Rydbert	0.03 s	Ruby	2017-04-27 11:40:52
2	Hidden user	0.03 s	Ruby	2017-05-07 18:06:07
3	Lee Tze Han	0.04 s	Ruby	2018-06-23 09:58:10
4	Hidden user	0.04 s	Ruby	2019-11-20 22:49:40
5	Jacob Kjeldahl	0.05 s	Ruby	2020-10-29 14:52:32
6	Thomas Feld	0.06 s	Ruby	2023-01-27 13:23:38

#	User	Runtime	Language	Date
1	Ward Muylaert	0.00 s	Rust	2019-07-09 11:20:11
2	Robert Janczewski	0.00 s	Rust	2020-02-07 09:03:11
3	Bas Dirks	0.00 s	Rust	2022-01-07 15:46:20
4	James Adler	0.00 s	Rust	2023-09-15 21:05:08

#	User	Length	Language	Date
1	Daniellx	253	C	2018-11-11 03:51:51
2	YanHao Ling	254	C	2017-12-22 07:07:30
3	Larissa	261	C	2018-11-20 14:56:35
4	Luyza Natasha	266	C	2018-11-19 01:12:57
5	Rick van Rheenen	304	C	2016-03-25 16:00:21
6	Hidden user	318	C	2018-01-25 10:03:39
7	Alan Alan	320	C	2019-06-21 11:07:35
8	Yao Wang	326	C	2019-04-13 20:47:55
9	Magnus Wass	330	C	2020-06-12 16:48:15
10	Leslie Yip	339	C	2022-08-31 14:15:55

#	User	Length	Language	Date
1	Johan Ahlrik	462	C#	2023-07-05 18:55:17
2	Liam Percy	553	C#	2018-04-20 08:42:05
3	Göran Andersson	553	C#	2022-05-21 15:20:12
4	Apurav Khare	653	C#	2021-10-06 06:25:27
5	Bas te Kolste	751	C#	2015-07-28 14:48:19
6	Khin Nyunt	774	C#	2017-06-02 08:05:04
7	Gustav Junedahl	891	C#	2022-04-26 09:46:38
8	Eric Weiss	916	C#	2022-09-09 16:37:13
9	Taekwan Yoon	962	C#	2024-03-05 19:33:19
10	Brutus Hansson	1123	C#	2019-02-02 19:05:23

#	User	Length	Language	Date
1	Hidden user	217	C++	2019-06-21 10:33:51
2	Phạm Xuân Tích	239	C++	2017-10-24 14:40:23
3	Jeremy Wong	247	C++	2018-01-26 06:07:02
4	Julian Neeleman	248	C++	2017-05-16 16:40:14
5	Herman Karlsson	253	C++	2015-06-01 17:33:24
6	Badr Kamel	257	C++	2020-05-06 17:55:49
7	luHere	257	C++	2022-12-27 14:42:24
8	Claire Duong	260	C++	2018-04-27 22:59:14
9	Muhammad At Thariq Filardi	261	C++	2021-01-28 10:37:03
10	Chase Hinesman	264	C++	2017-04-07 23:30:50

#	User	Length	Language	Date
1	David Cawthon	681	Common Lisp	2019-05-11 15:41:40

#	User	Length	Language	Date
1	Chris Vilches	296	Go	2024-08-22 17:35:00
2	Ian Howell	802	Go	2019-07-19 22:05:37
3	Norbert Voelker	1025	Go	2021-05-08 20:22:33

#	User	Length	Language	Date
1	Qi Ji	176	Haskell	2018-06-27 08:24:24
2	Atli Fannar Franklín	251	Haskell	2017-08-22 10:57:24
3	Steinar Simonnes	256	Haskell	2024-02-12 15:34:26
4	Hidden user	274	Haskell	2019-05-10 16:43:31
5	Brent Yorgey	359	Haskell	2017-11-17 06:00:13
6	Jan Hrček	368	Haskell	2021-03-17 16:08:54
7	Anthony Clark	453	Haskell	2017-03-02 01:47:44
8	Johan Meier	534	Haskell	2017-01-16 10:03:31
9	Quinn Flavel	813	Haskell	2021-01-16 00:39:07
10	Hidden user	3370	Haskell	2019-08-31 20:53:44

#	User	Length	Language	Date
1	Yé Wai Yan	337	Java	2017-05-28 07:41:27
2	Eric Leow Yu Quan	356	Java	2020-12-15 13:22:18
3	Caeden Whitaker	410	Java	2020-08-03 04:02:02
4	Nguyen Phuoc Bao Hoang	437	Java	2022-10-12 17:38:03
5	José Vander Meulen	450	Java	2018-01-16 21:03:44
6	Joseph Komskis	482	Java	2018-05-30 03:01:01
7	Ada Clevinger	486	Java	2018-08-11 23:49:21
8	Brendan Jones	494	Java	2017-05-02 22:29:22
9	Emil Bak-Møller	498	Java	2019-02-24 01:36:07
10	Doug Goodman	500	Java	2018-03-31 19:48:37

#	User	Length	Language	Date
1	Samuel Högfeldt	652	JavaScript (Node.js)	2022-08-04 18:26:34
2	Khin Nyunt	1073	JavaScript (Node.js)	2021-11-29 06:17:22
3	Zachary Shilton	1836	JavaScript (Node.js)	2022-06-15 13:49:10

#	User	Length	Language	Date
1	Peter Menyes	248	JavaScript (SpiderMonkey)	2021-11-06 21:23:27
2	Christian Cederquist	292	JavaScript (SpiderMonkey)	2023-01-29 19:42:15
3	Bjørn Chr. Soltvedt	304	JavaScript (SpiderMonkey)	2016-10-30 22:32:42
4	Adam Murphy	675	JavaScript (SpiderMonkey)	2016-03-23 04:27:59

#	User	Length	Language	Date
1	Timothy Gaede	431	Julia	2024-04-10 11:06:39

#	User	Length	Language	Date
1	Troy Warmboe	378	Kotlin	2020-03-06 02:21:47
2	Matthew Lutze	425	Kotlin	2019-09-28 07:26:06
3	Adam Rankin	497	Kotlin	2023-09-01 02:47:42
4	Ola Sundell	858	Kotlin	2018-05-29 10:20:22
5	Neil Harmon	869	Kotlin	2019-06-07 15:12:51

#	User	Length	Language	Date
1	Samuel Jefferis	895	OCaml	2020-12-15 00:05:45

#	User	Length	Language	Date
1	Klimenok Artem	342	Pascal	2018-05-12 20:55:08
2	Ingemar Ragnemalm	620	Pascal	2018-02-24 11:19:26

#	User	Length	Language	Date
1	Ahmed Chamseddine	91	Python 3	2024-08-19 16:16:32
2	Morten Clausen	102	Python 3	2022-10-22 17:04:10
3	Tai Tze Kin	121	Python 3	2024-05-07 09:25:59
4	Hidden user	140	Python 3	2022-10-24 03:49:39
5	Johan Wind	143	Python 3	2018-04-27 18:48:04
6	Oskar Haarklou Veileborg	148	Python 3	2020-05-04 09:09:55
7	Kepak Kelelawar	150	Python 3	2021-03-22 03:53:39
8	Mukerem Ali	151	Python 3	2022-08-18 23:25:10
9	Thibault Raffaillac	151	Python 3	2024-08-06 21:35:58
10	Jason Cannon	154	Python 3	2019-11-09 08:47:30

#	User	Length	Language	Date
1	Thomas Feld	80	Ruby	2023-01-27 13:23:38
2	Hidden user	88	Ruby	2019-11-20 22:54:55
3	Hidden user	286	Ruby	2017-05-07 18:06:07
4	Lee Tze Han	303	Ruby	2018-06-23 09:58:10
5	Jacob Kjeldahl	336	Ruby	2020-10-29 14:52:32
6	Erik Rydbert	354	Ruby	2017-04-27 11:40:52

#	User	Length	Language	Date
1	James Adler	571	Rust	2023-09-15 21:05:08
2	Bas Dirks	597	Rust	2022-01-07 15:46:20
3	Robert Janczewski	751	Rust	2020-02-07 09:03:11
4	Ward Muylaert	789	Rust	2019-07-09 11:20:11

Solution running time distribution