Problem I
Subway Tree System — Problem Statistics

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Submissions	1079
Accepted submissions	413
Submission ratio	38.28%
Authors	248
Full solves [?]	186
Full solve Ratio	75.00%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.03 s	C	2019-06-21 09:04:54

#	User	Runtime	Language	Date
1	Lukas Polacek	0.00 s	C++	2011-12-13 13:14:09
2	Emil Lenngren	0.00 s	C++	2013-02-23 23:04:29
3	Saad Taame	0.00 s	C++	2016-09-11 20:43:33
4	Toc Doanh Sang	0.00 s	C++	2018-01-01 01:42:28
5	Robin Christopher Yu	0.00 s	C++	2020-12-19 04:24:04
6	Nicholas Foo Chuan Le	0.00 s	C++	2022-08-29 14:26:06
7	Dario Petrillo	0.00 s	C++	2023-11-13 18:08:58
8	Kris Taran	0.00 s	C++	2023-11-20 17:23:25
9	Johan Wester	0.01 s	C++	2011-12-13 16:22:38
10	Niklas Nordmark	0.01 s	C++	2011-12-13 17:00:39

#	User	Runtime	Language	Date
1	Christoffer Danborg Irvall	0.32 s	Go	2019-05-04 19:33:12

#	User	Runtime	Language	Date
1	Isaac Arvestad	0.01 s	Haskell	2020-05-19 21:24:10
2	Flocon de Son	0.01 s	Haskell	2020-06-02 05:00:43
3	Hidden user	0.01 s	Haskell	2021-11-28 02:11:24
4	Buddha Buck	0.02 s	Haskell	2020-05-21 13:47:17
5	Juan Miguel Vilar	0.02 s	Haskell	2020-06-03 11:12:04
6	Aliaksey Artamonau	0.02 s	Haskell	2020-06-07 20:24:47
7	Brent Yorgey	0.03 s	Haskell	2020-05-22 22:08:02
8	TJ Takei	0.03 s	Haskell	2025-04-19 09:47:31
9	Shinji Koshida	0.03 s	Haskell	2025-09-30 06:46:53
10	Luis Antonio Donoso de Dios	0.04 s	Haskell	2020-05-24 09:17:48

#	User	Runtime	Language	Date
1	Hà Minh Ngọc	0.07 s	Java	2015-10-09 03:04:47
2	Hidden user	0.07 s	Java	2015-10-09 03:25:09
3	Nick Wu	0.12 s	Java	2015-10-07 02:13:19
4	Axel Lewenhaupt	0.13 s	Java	2013-02-25 17:26:37
5	Malte Larsson	0.14 s	Java	2021-11-20 09:09:53
6	Simon Klein	0.15 s	Java	2011-12-13 21:31:55
7	Fredrik Persson	0.15 s	Java	2021-12-08 14:47:42
8	Liam Keliher	0.16 s	Java	2016-10-19 17:39:30
9	Tristen Tulkens	0.16 s	Java	2020-01-15 00:53:18
10	Erik Odenman	0.17 s	Java	2013-02-21 20:23:21

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.05 s	JavaScript (SpiderMonkey)	2023-11-12 08:18:30

#	User	Runtime	Language	Date
1	Olav Røthe Bakken	0.09 s	Python 2	2019-12-05 11:38:58
2	Ragur Krishnan	0.15 s	Python 2	2022-02-17 16:27:42
3	Hidden user	0.18 s	Python 2	2014-04-17 23:54:05
4	Andreas Björklund	0.22 s	Python 2	2018-12-09 13:57:14

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	Python 3	2026-02-15 13:22:39
2	Bjørn Dons	0.07 s	Python 3	2019-05-31 09:53:40
3	Ahmed Chamseddine	0.07 s	Python 3	2025-10-08 08:57:19
4	Peter Elliott	0.09 s	Python 3	2018-09-11 02:42:52
5	Oskar Haarklou Veileborg	0.09 s	Python 3	2020-04-09 12:17:57
6	Dilhan Salgado	0.10 s	Python 3	2020-02-28 04:38:21
7	Leong Song Zhu, Owen	0.11 s	Python 3	2018-07-07 12:33:33
8	Z S	0.11 s	Python 3	2019-11-03 23:38:49
9	Lawry Sorenson	0.12 s	Python 3	2023-07-20 04:01:07
10	Robert Logi Jonsson	0.12 s	Python 3	2024-10-15 00:38:28

#	User	Runtime	Language	Date
1	Daniel Anker Hermansen	0.01 s	Rust	2023-01-01 14:40:35

#	User	Length	Language	Date
1	Ivan Petrov	616	C	2019-06-21 09:04:54

#	User	Length	Language	Date
1	Niklas Nordmark	672	C++	2011-12-13 17:00:39
2	Alexander Skidanov	675	C++	2025-02-03 19:44:32
3	Daniel Murphy	709	C++	2021-11-15 21:15:05
4	Josenildo Silva	743	C++	2017-05-26 00:20:39
5	Hidden user	804	C++	2022-10-17 13:13:30
6	Emil Wärnberg	882	C++	2013-02-26 21:16:29
7	Neal Zane	919	C++	2015-12-26 01:34:45
8	Hidden user	962	C++	2024-06-18 08:47:34
9	Erik Mattfolk	1031	C++	2019-09-17 18:21:25
10	Fredrik Hernqvist	1044	C++	2016-10-18 12:46:13

#	User	Length	Language	Date
1	Christoffer Danborg Irvall	2188	Go	2019-05-04 19:33:12

#	User	Length	Language	Date
1	Shinji Koshida	503	Haskell	2025-09-30 06:46:53
2	David Wärn	543	Haskell	2015-04-21 13:34:36
3	Anurudh Reddy	659	Haskell	2020-10-13 22:35:59
4	Luis Antonio Donoso de Dios	772	Haskell	2020-05-24 09:17:48
5	Flocon de Son	779	Haskell	2020-06-02 05:00:43
6	Hidden user	833	Haskell	2021-11-27 22:20:25
7	TJ Takei	838	Haskell	2025-04-19 09:47:31
8	Aliaksey Artamonau	976	Haskell	2020-06-07 20:26:05
9	Isaac Arvestad	1051	Haskell	2020-05-19 21:24:10
10	Hidden user	1110	Haskell	2021-04-26 04:59:30

#	User	Length	Language	Date
1	Harpa Jóhannsdóttir	1132	Java	2024-10-14 20:17:52
2	Hà Minh Ngọc	1189	Java	2015-10-09 03:10:54
3	Hidden user	1189	Java	2015-10-09 03:30:22
4	ghentan	1417	Java	2021-10-10 07:47:58
5	David Cerenius	1479	Java	2021-10-11 13:29:14
6	Finn Lidbetter	1590	Java	2016-10-20 00:24:19
7	Micah Stairs	1635	Java	2016-10-20 00:27:33
8	Godmar Back	1655	Java	2024-08-31 16:10:22
9	Doug Goodman	1692	Java	2018-05-16 15:02:38
10	Jake Crouch	1900	Java	2018-01-04 05:05:15

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	1837	JavaScript (SpiderMonkey)	2023-11-12 08:18:30

#	User	Length	Language	Date
1	Ragur Krishnan	306	Python 2	2022-02-17 16:27:42
2	Hidden user	551	Python 2	2014-04-17 23:54:05
3	Olav Røthe Bakken	574	Python 2	2019-12-05 11:38:58
4	Andreas Björklund	880	Python 2	2018-12-09 13:57:14

#	User	Length	Language	Date
1	Ahmed Chamseddine	225	Python 3	2025-10-15 14:39:43
2	Lawry Sorenson	247	Python 3	2023-07-20 04:15:30
3	Oskar Haarklou Veileborg	288	Python 3	2020-04-09 12:19:40
4	Rici Lake	299	Python 3	2022-04-02 21:19:42
5	Marcel Wrzos-Kaminski	433	Python 3	2022-10-18 00:23:44
6	Bjørn Dons	444	Python 3	2019-05-31 09:53:40
7	Brandon Young	470	Python 3	2024-02-04 21:08:56
8	Casper Rysgaard	489	Python 3	2020-07-01 21:41:29
9	Peter Elliott	575	Python 3	2018-09-11 02:42:52
10	Nicholas Russell Saerang	592	Python 3	2023-06-18 20:01:00

#	User	Length	Language	Date
1	Daniel Anker Hermansen	29550	Rust	2023-01-01 14:40:35

Solution running time distribution