Problem A
Transit Woes — Problem Statistics

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Submissions	5370
Accepted submissions	3324
Submission ratio	61.90%
Authors	3061
Accepted authors	2936
Author ratio	95.92%

#	User	Runtime	Language	Date
1	Simon Lundqvist	0.02 s	C#	2020-03-22 12:05:09
2	Tobias Arendt Laursen	0.02 s	C#	2020-03-23 13:05:36
3	Sean Harding	0.02 s	C#	2020-04-07 03:32:05
4	Gurpartap Singh Bhatti	0.02 s	C#	2020-04-08 04:56:15
5	Charles Christensen	0.02 s	C#	2020-04-17 21:55:04
6	Eralp Karakullukcu	0.02 s	C#	2020-04-29 18:39:38
7	Mads Smith	0.02 s	C#	2020-05-12 20:23:04
8	Bryce Goddard	0.02 s	C#	2020-05-14 00:05:40
9	Юра Юра	0.02 s	C#	2020-05-15 20:17:21
10	Jorge Almeida	0.02 s	C#	2020-05-17 00:40:11

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-06-20 16:28:38
2	Tristen MacPherson	0.01 s	Common Lisp	2020-07-19 09:02:58
3	wibi	0.01 s	Common Lisp	2020-08-15 05:44:09

#	User	Runtime	Language	Date
1	Patrick Bahr	0.03 s	F#	2021-02-13 10:29:22
2	Jacob Harris Cryer Kragh	0.05 s	F#	2022-05-18 20:57:18
3	Jonas Hartmann Andersen	0.08 s	F#	2020-05-10 15:55:05

#	User	Runtime	Language	Date
1	Ian Howell	0.02 s	Go	2020-03-24 22:16:55
2	Mohamed Ramrami	0.02 s	Go	2020-04-23 09:07:37
3	Aloysius Lee	0.02 s	Go	2020-05-05 16:27:42
4	Adrianus Vian	0.02 s	Go	2020-07-10 20:10:15
5	Jimmy Nejtron	0.02 s	Go	2023-01-17 16:10:48
6	Kok Dith	0.07 s	Go	2021-07-30 06:21:31
7	Zia kasyfi	0.08 s	Go	2020-07-10 20:09:29
8	Leet Oss	0.08 s	Go	2020-08-17 06:36:21
9	Norbert Voelker	0.08 s	Go	2021-04-08 23:03:54
10	Krzysztof Gibuła	0.08 s	Go	2021-08-07 21:34:38

#	User	Runtime	Language	Date
1	Tom Magnusson	0.00 s	Haskell	2020-03-30 00:04:51
2	Adam Sandstedt	0.00 s	Haskell	2020-04-19 15:09:10
3	Andreas Ländle	0.00 s	Haskell	2020-05-21 19:26:51
4	Shaun Greer	0.00 s	Haskell	2020-07-04 14:26:20
5	Scott Dauer	0.00 s	Haskell	2022-02-26 20:08:30
6	Brian Hwang	0.00 s	Haskell	2022-09-05 07:12:19
7	mark24	0.00 s	Haskell	2022-09-14 10:10:42
8	Greg Rosser	0.00 s	Haskell	2023-07-25 10:28:54
9	Steinar Simonnes	0.00 s	Haskell	2024-02-14 15:16:49
10	Brent Yorgey	0.01 s	Haskell	2020-03-19 19:26:01

#	User	Runtime	Language	Date
1	Goh Zhixuan Jeremiah	0.04 s	Java	2025-02-09 04:34:20
2	Lee Heng Sheng	0.05 s	Java	2024-04-17 06:44:34
3	Ku Brian	0.05 s	Java	2024-04-29 06:53:17
4	Wen Junhua	0.06 s	Java	2020-04-28 12:49:23
5	Crystal Sharpe	0.06 s	Java	2020-05-02 16:39:57
6	Leow Chen Yue, Abel	0.06 s	Java	2020-05-05 15:38:28
7	Kevin Sofronas	0.06 s	Java	2020-05-13 23:58:28
8	Ryan Lee Ting Zhern	0.06 s	Java	2020-05-14 11:00:21
9	Yee King Yap	0.06 s	Java	2020-05-19 14:26:29
10	Artur Lourenço	0.06 s	Java	2020-05-21 21:41:20

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-17 14:53:31
2	John Carr	0.04 s	JavaScript (Node.js)	2025-01-30 02:06:39
3	Dau Huy Minh	0.09 s	JavaScript (Node.js)	2022-10-09 06:54:58
4	Chris Wong	0.41 s	JavaScript (Node.js)	2021-01-31 22:12:19
5	John	0.42 s	JavaScript (Node.js)	2020-07-16 06:32:16
6	Tiago Oliveira	0.42 s	JavaScript (Node.js)	2020-08-17 21:08:29
7	Hovhannes Kantuni	0.42 s	JavaScript (Node.js)	2020-08-18 22:40:00
8	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-09-30 17:31:41
9	Taufik Hidayat	0.42 s	JavaScript (Node.js)	2020-10-09 05:15:17
10	Peter Kedemo	0.42 s	JavaScript (Node.js)	2020-12-25 23:12:05

#	User	Runtime	Language	Date
1	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2020-12-27 17:57:36
2	Nicklas Utgaard	0.02 s	JavaScript (SpiderMonkey)	2021-01-02 19:44:58
3	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-06-15 09:16:34
4	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-11-09 16:55:19
5	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-13 04:30:39
6	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2020-03-19 20:29:34
7	Andrea Bianchessi	0.03 s	JavaScript (SpiderMonkey)	2020-04-10 00:27:48

#	User	Runtime	Language	Date
1	Timothy Gaede	0.60 s	Julia	2024-03-31 07:29:43

#	User	Runtime	Language	Date
1	Hidden user	0.11 s	Kotlin	2020-05-02 05:29:36
2	Albert Pala	0.11 s	Kotlin	2021-06-29 18:07:14
3	Jacob Huebner	0.13 s	Kotlin	2020-05-31 06:07:21
4	Marit van Dijk	0.15 s	Kotlin	2021-09-15 10:50:06
5	Ola Sundell	0.16 s	Kotlin	2020-08-19 14:13:34
6	Christian Komusiewicz	0.18 s	Kotlin	2020-12-23 20:55:14
7	Adam Rankin	0.18 s	Kotlin	2023-05-04 07:02:54
8	Einar Kjellback	0.19 s	Kotlin	2020-08-11 11:16:23
9	Troy Warmboe	0.19 s	Kotlin	2021-10-09 01:23:23
10	Emil Eriksmoen Stensland	0.19 s	Kotlin	2022-03-08 23:47:01

#	User	Runtime	Language	Date
1	Matthew Lutze	0.00 s	OCaml	2020-05-10 19:02:49
2	Fredrik Eriksson	0.00 s	OCaml	2024-10-18 19:26:10

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-04-29 23:58:25

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2020-04-02 07:29:51
2	David Connolly	0.00 s	Pascal	2022-04-15 14:15:34

#	User	Runtime	Language	Date
1	Saito Ta	0.01 s	Perl	2024-04-03 10:28:39

#	User	Runtime	Language	Date
1	Thomas Marty	0.01 s	PHP	2021-01-25 00:53:44
2	Renate	0.01 s	PHP	2021-04-19 14:01:02
3	Muhammad Asyraf bin Akop	0.01 s	PHP	2022-05-13 09:19:00
4	Andre Wahyudi	0.01 s	PHP	2022-09-08 07:17:42
5	Victor Santos	0.01 s	PHP	2024-04-17 21:01:39
6	Nathã William Sena Soares	0.01 s	PHP	2024-04-24 16:39:51

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.02 s	Prolog	2023-01-28 16:44:05
2	Andriy Zyevakov	0.02 s	Prolog	2024-09-18 12:36:44

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-06-20 15:08:33
2	Godmar Back	0.03 s	Python 2	2020-03-14 19:53:06
3	Ram Basnet	0.03 s	Python 2	2020-03-23 05:54:42
4	Thomas Feld	0.03 s	Python 2	2020-03-25 09:59:31
5	Lars Åström	0.03 s	Python 2	2020-03-25 13:35:28
6	Maj Stenmark	0.03 s	Python 2	2020-03-29 12:55:08
7	Andreas Björklund	0.03 s	Python 2	2020-03-29 14:52:06
8	Mohamed Marzouk	0.03 s	Python 2	2020-04-18 22:55:19
9	Agis Daniels	0.03 s	Python 2	2020-05-01 16:15:32
10	Johan Lyts	0.03 s	Python 2	2020-05-02 14:27:17

#	User	Runtime	Language	Date
1	Amanda Andersson	0.04 s	Python 3	2022-06-05 23:01:42
2	András Biczó	0.04 s	Python 3	2022-06-06 01:46:52
3	Wouter Dijkstra	0.04 s	Python 3	2022-06-19 08:31:06
4	Hasan Kalzi	0.04 s	Python 3	2022-06-20 15:08:44
5	Harry Wang	0.04 s	Python 3	2022-06-22 07:01:20
6	Andrew Yu	0.04 s	Python 3	2022-06-23 18:59:28
7	Ethan Tang	0.04 s	Python 3	2022-06-23 21:34:48
8	Issa Issack	0.04 s	Python 3	2022-06-23 22:05:51
9	William Coury	0.04 s	Python 3	2022-06-23 22:54:11
10	Kaushik Kurapati	0.04 s	Python 3	2022-06-24 00:22:00

#	User	Runtime	Language	Date
1	Jia Wei Lee	0.05 s	Ruby	2020-04-28 15:54:59
2	Donald Dong	0.05 s	Ruby	2021-02-21 06:38:10
3	Jonathan Ogden	0.05 s	Ruby	2021-05-26 19:06:00
4	Gabriel Stanculescu	0.05 s	Ruby	2021-09-26 13:42:48
5	Régis Hanol	0.05 s	Ruby	2022-01-07 12:25:22
6	TobiasZ	0.05 s	Ruby	2022-01-19 19:12:45
7	Thomas Feld	0.06 s	Ruby	2022-11-02 11:52:11
8	Russell Ng	0.06 s	Ruby	2025-06-06 12:00:15

#	User	Length	Language	Date
1	Zachariah Goldthorpe	209	C	2020-07-18 19:07:55
2	Martin Blom	226	C	2023-10-04 14:16:07
3	Mustapha Slimani	470	C	2020-04-23 03:37:27
4	Hidden user	520	C	2020-08-27 16:10:12
5	Pallavi Sowl	531	C	2022-03-16 08:36:02
6	Hidden user	548	C	2020-06-04 21:57:34
7	Stephen John Bunting	551	C	2020-09-28 22:33:23
8	Nicholas Sippley	556	C	2021-03-22 14:41:36
9	Justin Strand	558	C	2022-09-06 02:07:38
10	Daniel Christopher Kesuma	566	C	2020-11-06 04:18:25

#	User	Length	Language	Date
1	Gregory Sinclair	221	C#	2023-11-26 01:10:27
2	Göran Andersson	671	C#	2022-05-07 00:18:33
3	Esty Crow	702	C#	2022-09-30 03:49:16
4	Владимир Хилько	776	C#	2022-05-17 13:29:36
5	Julian Brandt	788	C#	2020-09-30 21:57:04
6	Benjamin Bilbeau	809	C#	2023-09-19 20:23:13
7	Pavel Mardouski	810	C#	2021-01-11 05:50:27
8	Gurpartap Singh Bhatti	819	C#	2020-04-08 05:02:40
9	David Ray	917	C#	2022-09-07 21:58:38
10	Thomas Norris	921	C#	2020-11-11 23:28:05

#	User	Length	Language	Date
1	ck1080895吳長聿	262	C++	2020-05-26 09:49:48
2	Daniel Foreacre	276	C++	2022-09-27 04:27:35
3	吳俊廷	288	C++	2020-05-26 09:45:03
4	Muhammad Hassoud	320	C++	2020-05-06 14:43:47
5	Admasu Abera	352	C++	2021-01-04 15:26:12
6	Mouli Muppidi	358	C++	2022-05-30 03:53:53
7	Hidden user	360	C++	2022-11-22 19:00:36
8	Elias Lolck	363	C++	2021-04-09 16:25:22
9	son le thanh	365	C++	2021-10-14 14:51:49
10	Kin Liung	373	C++	2020-09-27 23:10:35

#	User	Length	Language	Date
1	wibi	504	Common Lisp	2020-08-15 05:44:09
2	David Cawthon	1154	Common Lisp	2020-06-20 16:28:38
3	Tristen MacPherson	3857	Common Lisp	2020-07-19 09:02:58

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1745	F#	2022-05-18 20:57:18
2	Patrick Bahr	2098	F#	2021-02-13 10:29:22
3	Jonas Hartmann Andersen	2994	F#	2020-05-10 15:55:05

#	User	Length	Language	Date
1	Mohamed Ramrami	563	Go	2020-04-23 09:07:37
2	Zia kasyfi	583	Go	2020-07-10 20:09:29
3	Hidden user	593	Go	2021-12-13 23:13:17
4	Aloysius Lee	622	Go	2020-05-05 16:27:42
5	Siyabend Revend	644	Go	2022-02-10 12:31:12
6	Adrianus Vian	645	Go	2020-07-10 20:10:15
7	Ian Howell	685	Go	2020-03-24 22:16:55
8	Jimmy Nejtron	750	Go	2023-01-17 16:10:48
9	Kok Dith	971	Go	2021-07-30 06:21:31
10	Krzysztof Gibuła	1011	Go	2021-08-07 21:34:38

#	User	Length	Language	Date
1	Caleb Surovik	370	Haskell	2021-06-11 21:13:42
2	Zach Tschetter	401	Haskell	2020-10-03 04:48:21
3	Daniel Cabral	432	Haskell	2022-03-03 08:33:03
4	Tomas Möre	443	Haskell	2020-08-03 13:06:31
5	mark24	478	Haskell	2022-09-14 10:10:42
6	Phan Ngọc Tiên	483	Haskell	2022-03-26 07:14:56
7	Andreas Ländle	499	Haskell	2020-05-21 19:26:51
8	Arthur Dent	518	Haskell	2020-07-16 13:51:16
9	Lim Ming Yean	524	Haskell	2020-04-04 13:18:28
10	Oisín Mac Fhearaí	683	Haskell	2021-01-07 22:23:25

#	User	Length	Language	Date
1	Xander McWhorter	443	Java	2020-10-30 14:52:33
2	Lim Ting Kai	527	Java	2023-06-01 12:06:17
3	Raymond Arrington	585	Java	2024-09-06 18:16:53
4	Luka Leppens	586	Java	2022-11-16 09:14:36
5	Hidden user	589	Java	2021-05-01 15:21:37
6	Sabrina Mori	597	Java	2020-04-02 21:12:52
7	Evan Hartnell	600	Java	2020-04-03 20:26:38
8	Hidden user	623	Java	2020-05-27 06:15:16
9	Kristoffer Borgstrøm	628	Java	2020-03-23 17:48:46
10	Letizia Fazzini	635	Java	2020-06-02 06:01:21

#	User	Length	Language	Date
1	Peter Kedemo	646	JavaScript (Node.js)	2020-12-25 23:12:05
2	Howard Tin Chi Chan	701	JavaScript (Node.js)	2021-02-18 22:15:02
3	John Carr	819	JavaScript (Node.js)	2025-01-30 02:06:39
4	Hovhannes Kantuni	866	JavaScript (Node.js)	2020-08-18 22:40:00
5	Tiago Oliveira	883	JavaScript (Node.js)	2020-08-17 21:08:29
6	Dau Huy Minh	900	JavaScript (Node.js)	2022-10-09 06:54:58
7	Hidden user	948	JavaScript (Node.js)	2022-04-20 20:57:35
8	Jaziel Robin	949	JavaScript (Node.js)	2022-04-14 20:40:58
9	Ali	972	JavaScript (Node.js)	2021-12-16 16:13:28
10	Jeremiah Ang	988	JavaScript (Node.js)	2022-03-25 14:06:51

#	User	Length	Language	Date
1	Christian Cederquist	158	JavaScript (SpiderMonkey)	2022-11-09 16:55:19
2	Jimmy Gustafsson	361	JavaScript (SpiderMonkey)	2022-06-15 09:16:34
3	Evan Magill	394	JavaScript (SpiderMonkey)	2024-04-13 04:37:31
4	Bjørn Chr. Soltvedt	429	JavaScript (SpiderMonkey)	2020-03-19 20:29:34
5	Peter Menyes	524	JavaScript (SpiderMonkey)	2020-12-27 17:57:36
6	Andrea Bianchessi	715	JavaScript (SpiderMonkey)	2020-04-10 00:27:48
7	Nicklas Utgaard	965	JavaScript (SpiderMonkey)	2021-01-02 19:44:58

#	User	Length	Language	Date
1	Timothy Gaede	664	Julia	2024-03-31 07:29:43

#	User	Length	Language	Date
1	Emil Eriksmoen Stensland	609	Kotlin	2022-03-08 23:47:01
2	Adam Rankin	612	Kotlin	2023-05-04 07:02:54
3	Einar Kjellback	635	Kotlin	2020-08-11 11:16:23
4	Jacob Huebner	673	Kotlin	2020-05-31 06:07:21
5	Resa Renaldy	733	Kotlin	2020-04-11 10:44:43
6	Troy Warmboe	751	Kotlin	2021-10-09 01:23:23
7	Christian Komusiewicz	806	Kotlin	2020-12-23 20:55:14
8	Hidden user	932	Kotlin	2020-03-23 23:44:56
9	Hidden user	977	Kotlin	2020-05-02 05:29:36
10	Albert Pala	1166	Kotlin	2021-06-29 18:07:14

#	User	Length	Language	Date
1	Matthew Lutze	1125	OCaml	2020-05-10 19:02:49
2	Fredrik Eriksson	1452	OCaml	2024-10-18 19:26:10

#	User	Length	Language	Date
1	Hidden user	1193	Odin	2025-04-29 23:58:25

#	User	Length	Language	Date
1	Ingemar Ragnemalm	854	Pascal	2020-04-02 07:29:51
2	David Connolly	1158	Pascal	2022-04-15 14:15:34

#	User	Length	Language	Date
1	Saito Ta	150	Perl	2024-04-03 10:28:39

#	User	Length	Language	Date
1	Victor Santos	565	PHP	2024-04-17 21:01:39
2	Thomas Marty	619	PHP	2021-01-25 00:53:44
3	Renate	679	PHP	2021-04-19 14:01:02
4	Muhammad Asyraf bin Akop	750	PHP	2022-05-13 09:19:00
5	Andre Wahyudi	989	PHP	2022-09-08 07:17:42
6	Nathã William Sena Soares	1198	PHP	2024-04-24 16:55:45

#	User	Length	Language	Date
1	Hakan Kjellerstrand	454	Prolog	2023-01-28 16:44:05
2	Andriy Zyevakov	2304	Prolog	2024-09-18 12:36:44

#	User	Length	Language	Date
1	Andreas Björklund	249	Python 2	2020-03-29 14:52:06
2	Thomas Feld	260	Python 2	2020-03-25 09:59:31
3	Sigurður Jens Albertsson	267	Python 2	2020-06-06 20:32:55
4	Lars Åström	273	Python 2	2020-03-25 13:35:28
5	Godmar Back	303	Python 2	2020-03-14 19:53:06
6	Johan Lyts	347	Python 2	2020-05-02 14:27:17
7	Shakeel Samsudeen	352	Python 2	2020-06-08 21:01:28
8	sagnik	352	Python 2	2020-09-28 05:48:09
9	Mohamed Marzouk	353	Python 2	2020-04-18 22:55:19
10	Emin Özbek	396	Python 2	2020-07-16 13:10:31

#	User	Length	Language	Date
1	Nguyên Khôi Đỗ	133	Python 3	2025-05-31 14:15:22
2	David Worley	133	Python 3	2024-02-22 18:33:01
3	Lawry Sorenson	142	Python 3	2023-02-17 22:13:16
4	Charles Ancheta	157	Python 3	2023-03-25 08:08:39
5	Morten Clausen	160	Python 3	2022-09-25 23:57:50
6	Joshua Kyle Joyner	160	Python 3	2020-06-28 08:18:15
7	Wouter Dijkstra	166	Python 3	2022-06-19 08:42:00
8	Benjamin Z White	167	Python 3	2023-04-08 15:40:05
9	Miguel Alcaraz Rivera	172	Python 3	2021-11-16 23:59:41
10	Rasmus Hulthe	190	Python 3	2022-09-12 14:43:03

#	User	Length	Language	Date
1	Thomas Feld	101	Ruby	2022-11-03 13:58:54
2	Russell Ng	118	Ruby	2025-06-06 12:25:56
3	Donald Dong	298	Ruby	2021-02-21 06:38:10
4	Jonathan Ogden	302	Ruby	2021-05-26 19:06:00
5	Régis Hanol	305	Ruby	2022-01-07 12:25:22
6	TobiasZ	632	Ruby	2022-01-19 19:12:45
7	Gabriel Stanculescu	1144	Ruby	2021-09-26 13:42:48
8	Jia Wei Lee	3453	Ruby	2020-04-28 15:54:59

#	User	Length	Language	Date
1	Vincent Lagerros	438	Rust	2025-01-02 01:11:36
2	Pankajkumar Patro	615	Rust	2024-10-06 18:26:24
3	Hovig Manjikian	642	Rust	2020-04-02 20:57:59
4	Andriy Semenistiy	752	Rust	2021-02-12 23:18:08
5	Bas Dirks	1032	Rust	2022-01-03 14:37:51
6	Henry Jayakusuma	1036	Rust	2020-05-31 05:46:08
7	Thomas	1097	Rust	2020-12-11 21:00:46
8	Eric Pinter	1170	Rust	2020-08-17 08:33:31
9	Qwmy	1225	Rust	2022-09-26 14:50:17
10	Anton Golov	1249	Rust	2021-10-27 21:37:27

Solution running time distribution