Problem A
Bus Numbers — Problem Statistics

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Submissions	3524
Accepted submissions	1389
Submission ratio	39.42%
Authors	1308
Full solves [?]	1178
Full solve Ratio	90.06%

#	User	Runtime	Language	Date
1	Jesper Öqvist	0.00 s	C	2018-03-15 22:10:17
2	Eyleifur Bjarkason	0.00 s	C	2018-12-24 16:29:43
3	Massimo Meneghello	0.00 s	C	2019-01-23 14:25:12
4	VLRTroll	0.00 s	C	2022-11-30 14:00:17
5	Daniel Patricio	0.00 s	C	2022-12-03 00:26:09
6	Mirel Cosulschi	0.00 s	C	2024-10-12 20:30:19
7	Tyler Mulholland	0.00 s	C	2025-10-28 20:35:45
8	Sambit Palit	0.01 s	C	2020-11-12 04:02:31
9	taichi	0.01 s	C	2023-06-27 04:33:43
10	Bergur Snorrason	0.03 s	C	2018-11-07 19:08:33

#	User	Runtime	Language	Date
1	Vijaya Sekhar Gullapalli	0.02 s	C#	2017-11-18 11:45:56
2	Wilhelm Magnusson	0.02 s	C#	2017-11-18 13:27:52
3	Mikael Fiala-Lundström	0.04 s	C#	2021-07-07 23:07:20
4	Nuwanga Rodrigo	0.04 s	C#	2025-10-02 07:50:07
5	Sebastian Eriksson	0.05 s	C#	2024-09-02 12:10:49
6	Nathan Andrews	0.11 s	C#	2024-10-18 21:06:27
7	Samuel Lindblom	0.13 s	C#	2018-11-23 20:27:11

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Common Lisp	2019-08-05 00:41:52

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-10-09 16:16:23

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.16 s	F#	2023-03-11 12:13:24

#	User	Runtime	Language	Date
1	Zachary Short	0.00 s	Go	2025-10-28 21:29:12
2	Nathan Lee	0.00 s	Go	2025-10-29 20:19:50
3	Norbert Voelker	0.08 s	Go	2021-08-23 09:17:04
4	Eddy Wu	0.43 s	Go	2018-12-20 05:20:50

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2024-06-08 15:17:39
2	Brent Yorgey	0.01 s	Haskell	2018-07-12 15:37:10
3	Esther Chong	0.01 s	Haskell	2018-08-14 16:43:56
4	Sebastian Emtell	0.01 s	Haskell	2019-03-03 18:38:52

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2025-01-21 16:35:15
2	Joshua Chin	0.04 s	Java	2025-06-07 07:18:20
3	Martin Jakobsson	0.05 s	Java	2017-11-18 10:13:55
4	Markus Larsson	0.05 s	Java	2017-11-18 11:09:51
5	Sven Rönnbäck	0.05 s	Java	2024-07-24 10:10:16
6	Mattias Gustafsson	0.06 s	Java	2017-11-18 10:41:23
7	Nguyễn Mạnh Phúc	0.06 s	Java	2018-08-20 04:20:41
8	Ahmad Barhamje	0.06 s	Java	2018-08-22 14:59:47
9	Joost Linthorst	0.06 s	Java	2018-10-24 07:16:43
10	Stephen Atwood	0.06 s	Java	2018-12-10 02:11:54

#	User	Runtime	Language	Date
1	Ty	0.07 s	JavaScript (Node.js)	2019-04-17 00:12:12
2	Stephanie Keck	0.52 s	JavaScript (Node.js)	2020-02-12 00:22:38

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2018-07-03 11:48:30
2	Nguyễn Mạnh Phúc	0.02 s	JavaScript (SpiderMonkey)	2018-08-20 04:26:51
3	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-05-17 22:03:47
4	Zach Tschetter	0.29 s	JavaScript (SpiderMonkey)	2023-06-20 19:09:56

#	User	Runtime	Language	Date
1	Timothy Gaede	0.54 s	Julia	2024-04-13 02:03:03

#	User	Runtime	Language	Date
1	Adam Rankin	0.20 s	Kotlin	2023-08-31 03:08:33
2	Phường Lên	0.21 s	Kotlin	2020-01-11 21:32:34
3	Jacob Huebner	0.21 s	Kotlin	2024-09-04 07:16:45
4	Hidden user	0.23 s	Kotlin	2020-02-28 18:53:24

#	User	Runtime	Language	Date
1	Caleb Austin	0.00 s	Lua	2024-10-18 20:57:47
2	Peter Hairatidis	0.00 s	Lua	2025-10-28 21:20:23

#	User	Runtime	Language	Date
1	Ivan Miloslavov	0.00 s	OCaml	2019-02-26 02:59:21

#	User	Runtime	Language	Date
1	Tomas Alvarez	0.02 s	Python 2	2017-12-05 16:57:56
2	Hidden user	0.03 s	Python 2	2017-11-18 10:25:35
3	Christofer Ohlsson	0.03 s	Python 2	2017-11-19 10:43:38
4	Haggai Liu	0.03 s	Python 2	2018-01-13 01:01:57
5	Oskar Haarklou Veileborg	0.03 s	Python 2	2018-11-07 20:52:09
6	Max Holmberg	0.03 s	Python 2	2018-11-09 22:24:11
7	omar Santiago valdivia viscarra	0.03 s	Python 2	2018-12-16 03:56:03
8	Fatima Afzali	0.03 s	Python 2	2018-12-21 17:21:45
9	Denis Benčič	0.03 s	Python 2	2018-12-25 13:54:59
10	Catalin Popa	0.03 s	Python 2	2019-01-10 18:06:27

#	User	Runtime	Language	Date
1	Linus Karlsson	0.02 s	Python 3	2017-11-18 10:32:20
2	Andy Lou	0.02 s	Python 3	2017-11-18 11:07:37
3	Sam Zackrisson	0.02 s	Python 3	2017-11-18 11:39:40
4	Ram Basnet	0.02 s	Python 3	2017-12-20 18:26:37
5	James Hamm	0.02 s	Python 3	2017-12-28 18:50:38
6	Tran Tuong Minh Nguyen	0.02 s	Python 3	2018-02-11 20:20:35
7	Måns Magnusson	0.02 s	Python 3	2018-03-20 13:30:37
8	Andre Pratama	0.02 s	Python 3	2018-04-29 04:29:59
9	Joseph Gitonga Wagura	0.02 s	Python 3	2018-05-11 12:54:29
10	Kasra Ghodsi	0.02 s	Python 3	2018-05-27 19:06:51

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2020-08-17 00:19:46
2	Yusuke Ichiki	0.05 s	Ruby	2022-06-28 08:46:52
3	Thomas Feld	0.06 s	Ruby	2023-05-22 07:33:42

#	User	Runtime	Language	Date
1	Matt	0.00 s	Rust	2019-03-03 22:54:17
2	Bas Dirks	0.00 s	Rust	2022-05-20 14:38:34
3	Artur Khuziakhmetov	0.00 s	Rust	2022-07-25 17:00:59
4	藤原潮人	0.00 s	Rust	2023-06-28 02:30:42
5	Iwancof	0.00 s	Rust	2023-07-01 09:28:05
6	Isak Jägberg	0.00 s	Rust	2024-10-17 12:42:24
7	Hidden user	0.02 s	Rust	2019-07-01 20:21:27
8	Ryosuke Takahashi	0.96 s	Rust	2023-07-03 19:10:33

#	User	Length	Language	Date
1	Mirel Cosulschi	381	C	2024-10-12 20:30:19
2	Hidden user	434	C	2017-11-18 10:21:31
3	Luca Dolci	639	C	2019-03-04 17:11:03
4	Daniel Patricio	737	C	2022-12-03 00:26:09
5	VLRTroll	739	C	2022-11-30 14:00:17
6	Komatsuna	741	C	2022-06-29 00:44:39
7	Carlo Fantozzi	762	C	2019-01-14 15:35:15
8	taichi	874	C	2023-06-27 04:33:43
9	Jesper Öqvist	877	C	2018-03-15 22:10:17
10	Christopher Kerns	992	C	2018-12-18 23:28:34

#	User	Length	Language	Date
1	Nathan Andrews	523	C#	2024-10-18 21:06:27
2	Nuwanga Rodrigo	943	C#	2025-10-02 07:50:07
3	Samuel Lindblom	1406	C#	2018-11-23 20:27:11
4	Sebastian Eriksson	1568	C#	2024-09-02 12:10:49
5	Wilhelm Magnusson	1896	C#	2017-11-18 13:27:52
6	Vijaya Sekhar Gullapalli	2571	C#	2017-11-18 11:45:56
7	Mikael Fiala-Lundström	3350	C#	2021-07-07 23:07:20

#	User	Length	Language	Date
1	Lorena Hantig	322	C++	2021-05-24 07:15:13
2	Way Tan	336	C++	2018-12-07 06:57:17
3	Armen Andreasyan	338	C++	2018-01-06 15:53:59
4	Ivan D. Pupovac	349	C++	2017-12-05 20:04:44
5	Andreas Grigorjew	361	C++	2018-12-18 21:18:55
6	Modak Shantanu Bharat	361	C++	2019-02-28 06:22:22
7	William Gan	363	C++	2018-04-12 03:07:12
8	Spencer Yuan	364	C++	2024-11-22 04:07:58
9	Zane Yu	365	C++	2018-11-26 13:31:48
10	Giovanna Kobus Conrado	365	C++	2019-01-18 22:09:18

#	User	Length	Language	Date
1	Hidden user	961	Common Lisp	2019-08-04 23:54:26

#	User	Length	Language	Date
1	dick move	309	Crystal	2025-10-09 16:16:23

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	817	F#	2023-03-11 12:13:24

#	User	Length	Language	Date
1	Zachary Short	414	Go	2025-10-28 21:29:12
2	Nathan Lee	720	Go	2025-10-29 20:19:50
3	Norbert Voelker	826	Go	2021-08-23 09:17:04
4	Eddy Wu	953	Go	2018-12-20 05:20:50

#	User	Length	Language	Date
1	Steinar Simonnes	429	Haskell	2024-06-08 15:15:12
2	Esther Chong	836	Haskell	2018-08-14 16:43:56
3	Sebastian Emtell	853	Haskell	2019-03-03 18:38:52
4	Brent Yorgey	999	Haskell	2018-07-12 15:37:10

#	User	Length	Language	Date
1	David Harmeyer	516	Java	2018-03-08 22:16:54
2	Dragos-Paul Vecerdea	523	Java	2018-11-26 22:27:51
3	Crystal Sharpe	594	Java	2020-08-05 06:09:17
4	Doug Goodman	601	Java	2018-07-02 20:14:48
5	Arup Ratan Guha	608	Java	2018-03-09 00:59:01
6	Ruhan Goltay	634	Java	2021-11-04 18:08:02
7	Nicholas Bachmann Tjørnelund	640	Java	2018-11-11 10:38:35
8	Jerry Zhu	641	Java	2018-03-10 01:06:15
9	Ethan Bainbridge	694	Java	2018-03-08 20:28:25
10	Billy Quiroga	701	Java	2018-03-08 21:38:27

#	User	Length	Language	Date
1	Ty	2131	JavaScript (Node.js)	2019-04-15 02:49:05
2	Stephanie Keck	6089	JavaScript (Node.js)	2020-02-12 00:22:38

#	User	Length	Language	Date
1	Nguyễn Mạnh Phúc	301	JavaScript (SpiderMonkey)	2018-08-20 04:26:51
2	Christian Pilegaard Cederquist	304	JavaScript (SpiderMonkey)	2023-05-17 22:03:47
3	Bjørn Chr. Soltvedt	337	JavaScript (SpiderMonkey)	2018-07-03 11:49:33
4	Zach Tschetter	451	JavaScript (SpiderMonkey)	2023-06-20 19:09:56

#	User	Length	Language	Date
1	Timothy Gaede	1518	Julia	2024-04-13 02:03:03

#	User	Length	Language	Date
1	Phường Lên	390	Kotlin	2020-01-11 21:32:34
2	Adam Rankin	597	Kotlin	2023-08-31 03:08:33
3	Jacob Huebner	624	Kotlin	2024-09-04 07:16:45
4	Hidden user	927	Kotlin	2020-02-28 18:53:24

#	User	Length	Language	Date
1	Caleb Austin	720	Lua	2024-10-18 20:57:47
2	Peter Hairatidis	944	Lua	2025-10-28 21:20:23

#	User	Length	Language	Date
1	Ivan Miloslavov	827	OCaml	2019-02-26 02:59:21

#	User	Length	Language	Date
1	Johan Lyts	289	Python 2	2020-02-29 20:17:39
2	Simon Vestin	302	Python 2	2019-01-21 08:29:54
3	Andreas Björklund	322	Python 2	2019-03-10 19:35:01
4	Jacob Gummesson Atroshi	327	Python 2	2019-06-13 13:18:35
5	Fatima Afzali	339	Python 2	2018-12-21 17:21:45
6	Herbert Ilhan Tanujaya	339	Python 2	2019-05-04 03:03:30
7	Hidden user	343	Python 2	2017-11-18 11:49:22
8	Tomas Alvarez	399	Python 2	2017-12-05 16:57:56
9	omar Santiago valdivia viscarra	425	Python 2	2018-12-16 03:56:03
10	Haggai Liu	427	Python 2	2018-01-13 01:01:57

#	User	Length	Language	Date
1	Benjamin Z White	140	Python 3	2023-05-22 19:45:09
2	Ahmed Chamseddine	172	Python 3	2024-05-17 16:50:51
3	Daniel Bogorad	184	Python 3	2025-12-19 04:10:30
4	Nino Bašić	189	Python 3	2023-01-15 15:17:57
5	Noah Hessen Bjerke	215	Python 3	2025-11-10 23:40:14
6	Raymond Yang	232	Python 3	2020-02-16 01:01:06
7	Farzam Abrishami	236	Python 3	2024-01-19 23:58:54
8	Charles Ancheta	237	Python 3	2023-03-24 09:57:53
9	Jason Clarke	245	Python 3	2024-02-08 16:23:44
10	Guan Yang Ze	246	Python 3	2021-04-30 12:03:02

#	User	Length	Language	Date
1	Thomas Feld	105	Ruby	2023-05-22 07:41:10
2	Yusuke Ichiki	264	Ruby	2022-06-28 08:47:29
3	Hidden user	290	Ruby	2020-08-17 00:19:46

#	User	Length	Language	Date
1	Artur Khuziakhmetov	955	Rust	2022-07-25 17:04:05
2	Isak Jägberg	1012	Rust	2024-10-17 12:42:24
3	Hidden user	1133	Rust	2019-07-01 19:37:51
4	Bas Dirks	1188	Rust	2022-05-20 14:39:57
5	藤原潮人	1263	Rust	2023-06-28 02:30:42
6	Ryosuke Takahashi	1621	Rust	2023-07-03 19:10:33
7	Matt	1842	Rust	2019-03-03 22:54:17
8	Iwancof	24640	Rust	2023-07-01 09:28:05

Solution running time distribution