Problem A
Early Winter — Problem Statistics

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Submissions	3641
Accepted submissions	1921
Submission ratio	52.76%
Authors	1752
Accepted authors	1653
Author ratio	94.35%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-11-23 10:38:04

#	User	Runtime	Language	Date
1	Øyvind Skaar	0.02 s	C#	2018-12-13 23:36:04
2	Thomas Norris	0.02 s	C#	2020-01-08 16:23:40
3	Amanda Christensen	0.02 s	C#	2020-11-27 16:25:53
4	Thomas Hoffmann Kilbak	0.02 s	C#	2020-11-27 18:12:35
5	Kristoffer Højelse	0.02 s	C#	2020-12-30 17:00:22
6	Hidden user	0.02 s	C#	2021-02-01 13:16:38
7	Sebastian Sternberg	0.02 s	C#	2021-02-19 19:25:31
8	Ben-Richard Ebbesvik	0.02 s	C#	2022-02-20 14:15:14
9	Peter Løffmann	0.02 s	C#	2022-04-30 16:00:33
10	Maria Spencer	0.02 s	C#	2023-02-14 14:09:01

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-09-12 17:22:37
2	Hugo Sansaqua	0.01 s	Common Lisp	2020-11-27 16:07:14
3	Hidden user	0.02 s	Common Lisp	2019-06-07 22:23:06

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-06-16 18:53:59

#	User	Runtime	Language	Date
1	n k	0.00 s	Go	2025-01-14 14:42:23
2	Ståle Jacobsen	0.07 s	Go	2022-01-19 19:53:23
3	Ian Howell	0.08 s	Go	2019-09-30 19:37:57
4	Norbert Voelker	0.08 s	Go	2021-04-26 12:30:53
5	Jack Kryger Sørensen	0.08 s	Go	2022-01-19 17:47:16

#	User	Runtime	Language	Date
1	Brandon Tang	0.00 s	Haskell	2022-06-15 11:48:26
2	Sebastian Banert	0.00 s	Haskell	2023-10-05 20:14:14
3	Steinar Simonnes	0.00 s	Haskell	2024-01-26 11:55:48
4	Brent Yorgey	0.01 s	Haskell	2018-10-28 20:32:14
5	Zach Tschetter	0.01 s	Haskell	2019-04-15 04:03:20
6	Jan Hrček	0.01 s	Haskell	2019-04-28 19:01:22
7	Christos Kontas	0.01 s	Haskell	2019-07-01 15:10:00
8	Aurélien Pepin	0.01 s	Haskell	2019-07-30 18:24:05
9	Hidden user	0.01 s	Haskell	2019-09-04 15:43:29
10	Shaun Greer	0.01 s	Haskell	2020-09-14 14:40:18

#	User	Runtime	Language	Date
1	Anh Mai Le Xuan	0.05 s	Java	2018-10-27 20:04:54
2	Dante Bencivenga	0.05 s	Java	2018-10-27 20:11:27
3	Hidden user	0.05 s	Java	2018-10-28 17:41:39
4	Sơn Phạm Huỳnh	0.05 s	Java	2018-10-29 04:53:54
5	Nam Phan Thành	0.05 s	Java	2018-10-29 04:55:52
6	Phụng Nguyễn Long Kim	0.05 s	Java	2018-10-29 09:13:08
7	Vinh Nguyễn Quang	0.05 s	Java	2018-10-29 09:22:12
8	Ariana Herbst	0.05 s	Java	2018-10-29 18:39:42
9	Lee Chun Yat	0.05 s	Java	2018-12-14 06:21:55
10	José Vander Meulen	0.05 s	Java	2018-12-14 16:05:48

#	User	Runtime	Language	Date
1	Gurpartap Singh Bhatti	0.05 s	JavaScript (Node.js)	2019-04-13 06:34:00
2	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-05-01 22:49:09
3	John	0.09 s	JavaScript (Node.js)	2022-07-16 07:54:55
4	Antonia Sisneros	0.09 s	JavaScript (Node.js)	2022-12-08 19:12:40
5	Peter Kedemo	0.41 s	JavaScript (Node.js)	2019-12-28 00:08:07
6	Chris Wong	0.42 s	JavaScript (Node.js)	2021-03-07 21:45:01
7	Andoko Chandra	0.43 s	JavaScript (Node.js)	2020-10-12 13:35:40

#	User	Runtime	Language	Date
1	Nguyễn Hùng Cường	0.02 s	JavaScript (SpiderMonkey)	2018-10-29 09:29:56
2	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2018-10-29 22:04:22
3	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-08-29 14:50:24
4	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-10 10:50:25
5	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-19 19:40:01

#	User	Runtime	Language	Date
1	Timothy Gaede	0.52 s	Julia	2024-04-02 04:54:14
2	Danny Robinson	0.68 s	Julia	2023-11-23 10:31:56

#	User	Runtime	Language	Date
1	Benjamin Ye	0.14 s	Kotlin	2023-01-09 21:52:02
2	Zhengqing Ye	0.15 s	Kotlin	2018-10-27 20:22:40
3	Ola Sundell	0.15 s	Kotlin	2018-12-03 13:37:52
4	Hidden user	0.16 s	Kotlin	2019-12-03 11:35:53
5	Ahmed Waseem Saeed	0.16 s	Kotlin	2021-12-18 00:53:02
6	Emil Wihlander	0.18 s	Kotlin	2023-07-27 11:47:22
7	Sergey Jakobsen	0.19 s	Kotlin	2021-06-08 17:57:38
8	Adam Rankin	0.19 s	Kotlin	2023-08-25 19:10:02
9	Neil Harmon	0.20 s	Kotlin	2019-05-16 10:14:08
10	Dmitry Shostak	0.21 s	Kotlin	2019-09-14 08:31:26

#	User	Runtime	Language	Date
1	Matthew Lutze	0.00 s	OCaml	2020-06-14 02:35:00

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2019-07-06 13:29:37

#	User	Runtime	Language	Date
1	cojonas1	0.01 s	PHP	2021-02-09 15:38:41
2	陳建宏	0.01 s	PHP	2021-05-29 19:55:16
3	April Clark	0.01 s	PHP	2021-10-24 22:31:02
4	Renate	0.01 s	PHP	2022-07-07 00:35:45
5	Andre Wahyudi	0.01 s	PHP	2023-03-17 09:12:15
6	Susanne Ragnemalm	0.01 s	PHP	2024-03-29 15:07:44

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2019-05-02 08:27:55
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-23 20:00:31

#	User	Runtime	Language	Date
1	Daniel DeLayo	0.02 s	Python 3	2018-10-27 20:05:11
2	Jacob Reckhard	0.02 s	Python 3	2018-10-27 20:05:27
3	Noah Gergel	0.02 s	Python 3	2018-10-27 20:06:46
4	Leo Gao	0.02 s	Python 3	2018-10-27 20:08:49
5	Jesse Ventura	0.02 s	Python 3	2018-10-27 20:09:23
6	Josip Smolcic	0.02 s	Python 3	2018-10-27 20:10:24
7	Hung Nguyen	0.02 s	Python 3	2018-10-27 20:12:57
8	Marcus Boay	0.02 s	Python 3	2018-10-27 20:14:54
9	Vlad Vladov	0.02 s	Python 3	2018-10-27 20:15:06
10	Victor Zheng	0.02 s	Python 3	2018-10-27 20:16:14

#	User	Runtime	Language	Date
1	Miorel Palii	0.04 s	Ruby	2018-11-03 22:28:30
2	Kok Dith	0.05 s	Ruby	2021-08-18 09:35:25
3	Thomas Feld	0.06 s	Ruby	2022-11-15 10:56:59
4	Ivy Wang	0.06 s	Ruby	2023-01-10 02:14:57

#	User	Runtime	Language	Date
1	Adam Vandolder	0.00 s	Rust	2019-07-10 07:01:00
2	Eric Pinter	0.00 s	Rust	2021-11-16 03:39:03
3	Yoeri Otten	0.00 s	Rust	2022-01-12 19:52:40
4	Rolf Martin Glomsrud	0.00 s	Rust	2022-01-17 19:25:19
5	Bas Dirks	0.00 s	Rust	2022-01-31 11:05:05
6	David Rasch	0.00 s	Rust	2022-06-22 16:57:20
7	Jianghua Wang	0.00 s	Rust	2023-01-10 00:01:43
8	Thobias Larsen	0.00 s	Rust	2023-01-28 16:25:28
9	Pankajkumar Patro	0.00 s	Rust	2024-09-15 23:43:28
10	Isak Jägberg	0.00 s	Rust	2024-10-21 13:17:09

#	User	Length	Language	Date
1	Danny Robinson	132	Bash	2023-11-23 10:56:22

#	User	Length	Language	Date
1	Eduardo Núñez	182	C	2024-02-27 23:32:17
2	Martin Blom	194	C	2024-01-04 20:35:57
3	Matthew Weston	255	C	2022-01-28 15:11:49
4	Andrew Roberts	305	C	2019-06-04 01:23:32
5	Sambit Palit	328	C	2020-10-18 05:06:34
6	Hidden user	330	C	2024-09-24 13:41:33
7	Tyler Mulholland	336	C	2019-07-25 11:08:38
8	Leo Chen	345	C	2019-04-27 04:41:47
9	Zach Robertson	346	C	2024-02-13 04:51:14
10	Matthew Hartono	351	C	2022-09-12 15:22:21

#	User	Length	Language	Date
1	Greg Sinclair	278	C#	2023-12-16 21:25:07
2	Göran Andersson	583	C#	2022-05-11 01:23:49
3	Peter Løffmann	609	C#	2022-04-30 16:00:33
4	Thomas Norris	644	C#	2020-01-08 16:23:40
5	Thobias Larsen	661	C#	2023-05-08 20:04:29
6	Hidden user	688	C#	2021-02-01 13:17:26
7	Umar Rasyid	724	C#	2025-02-01 17:11:32
8	Sebastian Sternberg	800	C#	2021-02-19 19:25:31
9	Ben-Richard Ebbesvik	812	C#	2022-02-20 14:15:14
10	Mikael Fiala-Lundström	859	C#	2021-04-17 22:24:10

#	User	Length	Language	Date
1	Guk Yi Siong	209	C++	2023-06-13 08:02:00
2	Tyler Fernando	213	C++	2022-11-08 03:40:37
3	Zane Yu	267	C++	2019-01-10 14:00:57
4	Way Tan	269	C++	2019-02-27 06:31:25
5	Mohammad Sadeghi	272	C++	2019-07-11 05:57:52
6	Đậu Huy Minh	274	C++	2022-11-12 05:54:44
7	William Gan	286	C++	2018-12-06 15:33:56
8	Grae Yeandle	287	C++	2018-12-31 11:47:17
9	Hidden user	290	C++	2020-01-27 17:41:47
10	Bennett Lim	293	C++	2020-03-14 10:48:04

#	User	Length	Language	Date
1	Hidden user	227	Common Lisp	2019-06-07 22:23:06
2	David Cawthon	395	Common Lisp	2020-09-12 17:22:37
3	Hugo Sansaqua	2850	Common Lisp	2020-11-27 16:07:14

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	380	F#	2022-06-16 18:53:59

#	User	Length	Language	Date
1	Jack Kryger Sørensen	348	Go	2022-01-19 17:47:16
2	Ian Howell	433	Go	2019-09-30 19:37:57
3	Ståle Jacobsen	605	Go	2022-01-19 19:53:23
4	n k	744	Go	2025-01-14 14:42:23
5	Norbert Voelker	887	Go	2021-04-26 12:30:53

#	User	Length	Language	Date
1	Steinar Simonnes	264	Haskell	2024-01-26 11:55:48
2	Zach Tschetter	292	Haskell	2019-04-15 04:03:20
3	Sebastian Banert	316	Haskell	2023-10-05 20:14:14
4	Jan Hrček	371	Haskell	2019-04-28 19:01:22
5	Bo Aanes	428	Haskell	2022-01-18 15:52:56
6	Brent Yorgey	433	Haskell	2018-10-28 20:32:14
7	Aurélien Pepin	455	Haskell	2019-07-30 18:24:05
8	Christos Kontas	462	Haskell	2019-07-01 15:10:00
9	Brandon Tang	510	Haskell	2022-06-15 11:48:26
10	Jonas Kastberg Hinrichsen	520	Haskell	2020-11-27 16:35:19

#	User	Length	Language	Date
1	Jenny Le	410	Java	2018-10-27 20:53:39
2	Olivia Bizimungu	424	Java	2019-10-09 02:52:36
3	Jason Liu	437	Java	2023-05-13 21:18:01
4	Nam Phan Thành	448	Java	2018-10-29 04:53:43
5	Ali Pervaiz	460	Java	2019-03-25 16:01:48
6	Cole Adams	463	Java	2018-10-27 20:12:40
7	Caeden Whitaker	466	Java	2020-07-22 06:16:07
8	Joseph Dyer	473	Java	2018-10-27 20:16:26
9	Tom Houben	476	Java	2018-12-17 15:45:39
10	Andreas Guldborg Hansen	482	Java	2021-09-30 23:12:06

#	User	Length	Language	Date
1	Peter Kedemo	473	JavaScript (Node.js)	2019-12-28 00:08:07
2	Chris Wong	511	JavaScript (Node.js)	2021-03-07 21:45:01
3	Antonia Sisneros	610	JavaScript (Node.js)	2022-12-08 19:12:40
4	Gurpartap Singh Bhatti	720	JavaScript (Node.js)	2019-04-13 06:34:00
5	Andoko Chandra	769	JavaScript (Node.js)	2020-10-12 13:35:40
6	Sander Hellesø	787	JavaScript (Node.js)	2019-05-01 22:49:09
7	John	863	JavaScript (Node.js)	2022-07-16 07:54:55

#	User	Length	Language	Date
1	Jimmy Gustafsson	174	JavaScript (SpiderMonkey)	2024-07-19 19:40:01
2	Nguyễn Hùng Cường	272	JavaScript (SpiderMonkey)	2018-10-29 09:29:56
3	Peter Menyes	319	JavaScript (SpiderMonkey)	2021-08-29 14:54:52
4	Bjørn Chr. Soltvedt	332	JavaScript (SpiderMonkey)	2018-10-29 22:04:22
5	Christian Cederquist	347	JavaScript (SpiderMonkey)	2023-01-10 10:50:25

#	User	Length	Language	Date
1	Danny Robinson	166	Julia	2023-11-23 10:31:56
2	Timothy Gaede	847	Julia	2024-04-02 04:54:14

#	User	Length	Language	Date
1	Adam Rankin	335	Kotlin	2023-08-25 19:10:02
2	Sergey Jakobsen	339	Kotlin	2021-06-08 17:57:38
3	Troy Warmboe	357	Kotlin	2020-02-19 00:00:48
4	Dmitry Shostak	358	Kotlin	2019-09-14 08:31:26
5	Emil Wihlander	363	Kotlin	2023-07-27 11:47:22
6	Benjamin Ye	422	Kotlin	2023-01-09 21:52:02
7	Ola Sundell	524	Kotlin	2018-12-03 13:37:52
8	Zhengqing Ye	539	Kotlin	2018-10-27 20:22:40
9	Ahmed Waseem Saeed	582	Kotlin	2021-12-18 00:53:02
10	Hidden user	712	Kotlin	2019-12-03 11:35:53

#	User	Length	Language	Date
1	Matthew Lutze	700	OCaml	2020-06-14 02:35:00

#	User	Length	Language	Date
1	Ingemar Ragnemalm	328	Pascal	2019-07-06 13:29:37

#	User	Length	Language	Date
1	April Clark	357	PHP	2021-10-24 22:31:02
2	Renate	374	PHP	2022-07-07 00:35:45
3	cojonas1	496	PHP	2021-02-09 15:38:41
4	Andre Wahyudi	765	PHP	2023-03-17 09:12:15
5	Susanne Ragnemalm	829	PHP	2024-03-29 15:07:44
6	陳建宏	1280	PHP	2021-05-29 19:55:16

#	User	Length	Language	Date
1	Hakan Kjellerstrand	436	Prolog	2023-02-23 20:00:31
2	Andriy Zyevakov	481	Prolog	2019-05-02 08:27:55

#	User	Length	Language	Date
1	Benjamin Z White	155	Python 3	2023-05-17 14:09:52
2	Do Khoi Nguyen	168	Python 3	2024-12-23 21:54:07
3	Kévin Dubrulle	177	Python 3	2024-11-17 15:09:07
4	Ahmed Chamseddine	182	Python 3	2024-07-22 15:56:38
5	Shashank Bhatt	183	Python 3	2024-08-26 18:22:53
6	Thibault Raffaillac	185	Python 3	2023-08-01 15:37:20
7	Adam Levav	189	Python 3	2023-01-24 19:35:32
8	Charles Ancheta	195	Python 3	2023-03-25 20:56:34
9	Harry Zhang	197	Python 3	2022-12-13 16:27:35
10	Mikael Häglund	198	Python 3	2022-12-02 23:30:09

#	User	Length	Language	Date
1	Thomas Feld	120	Ruby	2022-11-15 10:56:59
2	Miorel Palii	231	Ruby	2018-11-03 22:28:30
3	Kok Dith	246	Ruby	2021-08-18 09:35:25
4	Ivy Wang	267	Ruby	2023-01-14 08:39:25

#	User	Length	Language	Date
1	Pankajkumar Patro	556	Rust	2024-09-15 23:43:28
2	David Rasch	674	Rust	2022-06-22 16:57:20
3	Adam Vandolder	683	Rust	2019-07-10 07:01:00
4	Thobias Larsen	726	Rust	2023-01-28 16:25:28
5	Isak Jägberg	767	Rust	2024-10-21 13:17:09
6	Rolf Martin Glomsrud	778	Rust	2022-01-17 19:25:19
7	Jianghua Wang	797	Rust	2023-01-10 00:01:43
8	Eric Pinter	1086	Rust	2021-11-16 03:39:03
9	Bas Dirks	1209	Rust	2022-01-31 11:05:05
10	Yoeri Otten	1410	Rust	2022-01-12 19:52:40

Solution running time distribution