Problem A
Train Sorting — Problem Statistics

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Submissions	14651
Accepted submissions	2649
Submission ratio	18.08%
Authors	2485
Full solves [?]	1743
Full solve Ratio	70.14%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2019-03-25 19:35:49
2	Eyleifur Bjarkason	0.00 s	C	2020-11-02 23:40:21
3	Sigurbjörg Erla	0.00 s	C	2024-02-24 22:47:35
4	Guðbjörg Viðja	0.00 s	C	2024-02-25 19:25:26
5	Olav Røthe Bakken	0.01 s	C	2017-10-25 22:35:59
6	Hidden user	0.01 s	C	2018-04-18 10:25:27
7	Thore Husfeldt	0.01 s	C	2018-11-08 22:27:00
8	John Paul Hanson	0.01 s	C	2019-02-19 18:56:36
9	Jacob Gummesson Atroshi	0.01 s	C	2019-05-25 14:19:36
10	Pim Heeman	0.01 s	C	2019-06-05 21:46:12

#	User	Runtime	Language	Date
1	Thomas Norris	0.03 s	C#	2019-06-23 01:06:07
2	Kelvin Petry	0.04 s	C#	2019-04-25 13:14:30
3	Charles Petkovich	0.05 s	C#	2019-02-18 03:20:13
4	Fredrik Absalonsen	0.09 s	C#	2018-02-28 21:45:28

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	D	2025-08-15 16:14:38

#	User	Runtime	Language	Date
1	Michael Rubinstein	0.01 s	Go	2025-11-16 21:28:29
2	Nathan Lee	0.02 s	Go	2025-11-20 17:52:17
3	Derek Zhang	0.20 s	Go	2019-02-15 09:05:57

#	User	Runtime	Language	Date
1	Morten Lohne	0.00 s	Haskell	2018-03-05 17:33:37
2	Birk Tjelmeland	0.13 s	Haskell	2018-02-11 14:23:43
3	Nishanth Reddy	0.16 s	Haskell	2024-11-08 22:16:25
4	Stian	0.18 s	Haskell	2020-02-06 19:13:55
5	Mikail Khan	0.21 s	Haskell	2022-03-02 01:21:29

#	User	Runtime	Language	Date
1	Issa Issack	0.06 s	Java	2025-02-21 03:09:06
2	Joseph Stalin	0.06 s	Java	2025-09-11 12:31:39
3	Hidden user	0.06 s	Java	2025-09-11 15:28:55
4	Hà Minh Ngọc	0.07 s	Java	2015-11-03 19:52:48
5	Hidden user	0.07 s	Java	2016-07-10 16:37:45
6	Hidden user	0.07 s	Java	2018-03-04 21:58:23
7	Bala Krishna	0.07 s	Java	2024-08-26 17:37:08
8	Kushal Rao	0.07 s	Java	2025-09-07 18:04:54
9	Florian Rademaker	0.07 s	Java	2025-09-11 12:22:00
10	Hidden user	0.08 s	Java	2015-11-04 07:49:01

#	User	Runtime	Language	Date
1	Jack Crane	0.05 s	JavaScript (Node.js)	2025-10-08 19:34:53
2	Jack	0.05 s	JavaScript (Node.js)	2025-10-08 20:35:08

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-07-10 17:20:40

#	User	Runtime	Language	Date
1	Hidden user	0.17 s	Kotlin	2018-02-09 19:55:30
2	Wesley Leung	0.19 s	Kotlin	2018-05-26 02:03:36
3	Sondre Nilsen	0.19 s	Kotlin	2021-03-01 17:21:04
4	Phường Lên	0.25 s	Kotlin	2020-05-02 03:19:07
5	Ditlef Alexander Diseth	0.27 s	Kotlin	2020-02-05 20:32:20
6	Jake Bounds	0.37 s	Kotlin	2024-09-29 02:33:53

#	User	Runtime	Language	Date
1	Dũ Quốc Huy	0.02 s	Pascal	2019-08-23 14:05:50

#	User	Runtime	Language	Date
1	Annie Bai	0.14 s	PHP	2019-03-02 03:43:27
2	Morten Mehus	0.19 s	PHP	2018-02-28 21:24:13

#	User	Runtime	Language	Date
1	Paul Devlin	0.04 s	Python 2	2019-02-21 23:45:52
2	Øyvind Haarberg	0.05 s	Python 2	2018-09-05 18:12:11
3	Maisam Arif	0.06 s	Python 2	2017-03-24 06:50:11
4	Jessica Fang	0.06 s	Python 2	2017-03-24 07:43:46
5	Rachel Campbell	0.06 s	Python 2	2017-03-24 18:50:54
6	Raymond van Venetie	0.06 s	Python 2	2019-05-28 17:57:39
7	Juliang Li	0.07 s	Python 2	2018-03-02 01:01:46
8	Svetlana Halnes	0.07 s	Python 2	2018-03-09 10:57:41
9	Mees de Vries	0.07 s	Python 2	2020-04-01 10:13:14
10	Maj Stenmark	0.08 s	Python 2	2018-04-04 19:22:32

#	User	Runtime	Language	Date
1	Lester Muñoz	0.03 s	Python 3	2019-03-25 03:11:34
2	Ken Xu	0.05 s	Python 3	2019-05-16 09:35:04
3	Nandan Ramesh	0.06 s	Python 3	2023-11-21 05:55:37
4	Ethan	0.06 s	Python 3	2024-08-31 11:26:19
5	Julio Dondisch	0.06 s	Python 3	2025-04-20 05:13:08
6	Breck Ortiz	0.06 s	Python 3	2025-04-20 06:48:30
7	Vincent Tandya	0.07 s	Python 3	2020-12-11 10:49:03
8	Yi-Min Seah	0.07 s	Python 3	2022-08-13 15:56:54
9	ben pratt	0.07 s	Python 3	2024-10-07 23:17:16
10	Jonathan Kennel	0.07 s	Python 3	2024-10-07 23:56:56

#	User	Runtime	Language	Date
1	Yusuke Ichiki	0.30 s	Ruby	2022-05-13 09:01:00
2	Thomas Feld	0.32 s	Ruby	2025-11-05 10:31:39

#	User	Runtime	Language	Date
1	Muhammad Rais Fathin Mudzakir	0.00 s	Rust	2021-05-16 12:03:59
2	Hidden user	0.00 s	Rust	2022-12-10 18:30:09
3	Niklas Sandén	0.00 s	Rust	2023-01-26 15:11:48
4	Vincent Lagerros	0.00 s	Rust	2024-09-16 18:04:40
5	Love Brandefelt	0.01 s	Rust	2018-11-19 02:49:39
6	Christofer Nolander	0.01 s	Rust	2018-11-27 06:39:18
7	Florian Nagel	0.01 s	Rust	2019-12-05 21:07:32
8	Fritiof Rusck	0.01 s	Rust	2023-12-03 17:27:15
9	Simon Jutvreten	0.01 s	Rust	2023-12-05 19:59:22
10	Alvin Westling	0.01 s	Rust	2023-12-06 20:15:47

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Swift	2024-09-13 11:43:30
2	Danial Haseeb	0.02 s	Swift	2023-10-07 19:05:58

#	User	Runtime	Language	Date
1	Alexander Björkman	0.02 s	Zig	2023-12-08 00:21:59

#	User	Length	Language	Date
1	Tommy Bergman	256	C	2023-12-06 12:36:37
2	Abhinav Dusi	612	C	2021-09-17 08:01:47
3	Régis Meyssonnier	704	C	2023-03-28 16:26:29
4	Thore Husfeldt	732	C	2018-11-08 22:28:12
5	Andrew Legoboy	735	C	2020-11-29 16:57:38
6	Martin Bekier	735	C	2020-12-28 23:55:14
7	Lai Hong Phuc	735	C	2022-05-25 04:45:17
8	Zohair Abbas	735	C	2022-11-16 10:04:33
9	John Paul Hanson	751	C	2019-02-19 18:56:36
10	Jeremy Lim	765	C	2023-11-27 07:27:57

#	User	Length	Language	Date
1	Thomas Norris	952	C#	2019-06-23 01:06:07
2	Fredrik Absalonsen	1596	C#	2018-02-28 21:45:28
3	Charles Petkovich	1859	C#	2019-02-18 03:20:13
4	Kelvin Petry	1940	C#	2019-04-25 13:14:30

#	User	Length	Language	Date
1	William Gan	422	C++	2017-02-02 05:21:33
2	Håvard Stuberg	428	C++	2018-03-03 15:49:45
3	Lawry Sorenson	430	C++	2024-08-08 20:35:09
4	Chase Hinesman	433	C++	2018-03-02 23:10:53
5	Jenny Chen	445	C++	2024-02-15 23:32:18
6	Arvid Kristoffersson	447	C++	2024-09-05 13:39:17
7	Sample	451	C++	2024-11-25 21:57:01
8	Nathaniel Ang	455	C++	2020-02-13 06:37:29
9	bekarhunmain	460	C++	2024-07-11 20:04:00
10	Omar Muhammetkulyyev	464	C++	2024-10-11 12:03:50

#	User	Length	Language	Date
1	Hidden user	883	D	2025-08-15 16:14:38

#	User	Length	Language	Date
1	Nathan Lee	617	Go	2025-11-20 17:52:17
2	Michael Rubinstein	990	Go	2025-11-16 21:28:29
3	Derek Zhang	5700	Go	2019-02-15 09:05:57

#	User	Length	Language	Date
1	Birk Tjelmeland	845	Haskell	2018-02-11 14:23:43
2	Mikail Khan	905	Haskell	2022-03-02 01:21:29
3	Nishanth Reddy	905	Haskell	2024-11-08 22:16:25
4	Stian	1273	Haskell	2020-02-06 19:12:23
5	Morten Lohne	2313	Haskell	2018-03-05 17:37:40

#	User	Length	Language	Date
1	Marc Dominic San Pedro	640	Java	2023-05-23 08:53:25
2	Mitch Price	678	Java	2016-09-30 19:56:23
3	Lam Gia Thuan	689	Java	2019-04-24 13:01:56
4	Folkert van Verseveld	750	Java	2019-06-09 13:20:10
5	Xiyu Liu	783	Java	2023-11-30 11:44:04
6	Alireza Ghaedamini	783	Java	2025-09-11 11:59:43
7	MELWIN SEBASTIAN	797	Java	2024-11-09 04:02:39
8	Ninghui Li	802	Java	2022-03-29 22:37:00
9	Moeez Nagra	829	Java	2024-11-04 05:08:22
10	Joren	831	Java	2024-11-08 23:07:20

#	User	Length	Language	Date
1	Jack Crane	1166	JavaScript (Node.js)	2025-10-08 19:34:53
2	Jack	1903	JavaScript (Node.js)	2025-10-08 20:17:45

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	446	JavaScript (SpiderMonkey)	2023-07-10 17:20:40

#	User	Length	Language	Date
1	Sondre Nilsen	627	Kotlin	2021-03-01 17:21:04
2	Jake Bounds	983	Kotlin	2024-09-29 02:33:53
3	Phường Lên	1151	Kotlin	2020-05-02 03:19:07
4	Wesley Leung	2171	Kotlin	2018-05-26 02:03:36
5	Hidden user	3490	Kotlin	2018-02-09 19:56:27
6	Ditlef Alexander Diseth	4952	Kotlin	2020-02-05 20:32:20

#	User	Length	Language	Date
1	Dũ Quốc Huy	842	Pascal	2019-08-23 14:05:50

#	User	Length	Language	Date
1	Morten Mehus	740	PHP	2018-02-28 21:24:13
2	Annie Bai	1968	PHP	2019-03-02 03:43:27

#	User	Length	Language	Date
1	Andreas Björklund	391	Python 2	2019-05-22 18:51:25
2	Thore Husfeldt	422	Python 2	2018-11-08 22:34:14
3	Maj Stenmark	494	Python 2	2018-04-04 19:22:32
4	John Paul Hanson	521	Python 2	2019-02-19 18:22:43
5	Kai Maeda	539	Python 2	2023-11-23 22:16:25
6	Michael Cheng	540	Python 2	2023-11-28 04:04:20
7	Jessica Fang	583	Python 2	2017-03-24 07:43:46
8	Mees de Vries	591	Python 2	2020-04-01 10:13:14
9	Raymond van Venetie	599	Python 2	2019-05-28 17:57:39
10	Lars Åström	604	Python 2	2018-04-06 15:24:33

#	User	Length	Language	Date
1	Jeremy Eastham	186	Python 3	2025-04-19 12:45:53
2	Michael Goldwasser	224	Python 3	2024-10-06 20:42:36
3	Ahmed Chamseddine	232	Python 3	2025-01-24 22:12:07
4	Casper Rysgaard	254	Python 3	2023-12-01 13:49:27
5	Will Corcoran	272	Python 3	2025-02-19 18:37:43
6	Josh Taylor	312	Python 3	2022-09-26 15:59:30
7	Zac Friggstad	318	Python 3	2022-02-14 22:06:30
8	Yang Li	322	Python 3	2023-11-21 05:30:04
9	Ishrat Naba	324	Python 3	2025-02-27 04:33:59
10	Hidden user	326	Python 3	2023-12-01 20:41:55

#	User	Length	Language	Date
1	Thomas Feld	171	Ruby	2025-11-05 10:41:41
2	Yusuke Ichiki	476	Ruby	2022-05-13 09:01:00

#	User	Length	Language	Date
1	Simon Jutvreten	853	Rust	2023-12-05 19:59:22
2	HuaiYuan Jing	859	Rust	2024-10-07 19:01:09
3	Minghao Zhang	901	Rust	2024-05-30 05:33:04
4	Gangnam Style	944	Rust	2024-11-27 21:55:02
5	Florian Nagel	962	Rust	2019-12-05 21:07:32
6	Arvid Kristoffersson	1022	Rust	2024-09-05 14:00:38
7	Liam Thorell	1093	Rust	2024-11-28 00:17:30
8	Vincent Lagerros	1202	Rust	2024-09-16 18:04:40
9	Oscar Eriksson	1268	Rust	2024-11-28 16:47:13
10	Alexander Berntsson	1392	Rust	2025-02-20 16:26:00

#	User	Length	Language	Date
1	Danial Haseeb	626	Swift	2023-10-07 19:05:58
2	Hidden user	4258	Swift	2024-09-13 11:43:30

#	User	Length	Language	Date
1	Alexander Björkman	2168	Zig	2023-12-08 00:21:59

Solution running time distribution