Problem A
Safe Racing — Problem Statistics

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Submissions	408
Accepted submissions	165
Submission ratio	40.44%
Authors	161
Full solves [?]	136
Full solve Ratio	84.47%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.03 s	C	2019-03-28 15:28:02

#	User	Runtime	Language	Date
1	Mårten Wiman	0.01 s	C++	2016-11-13 09:33:32
2	Alex Gu	0.01 s	C++	2016-11-23 00:45:16
3	Pim Spelier	0.01 s	C++	2016-11-26 13:14:08
4	Antonio Molina Lovett	0.01 s	C++	2017-02-18 20:09:03
5	Lingsong Zeng	0.01 s	C++	2017-02-18 20:26:08
6	Nangxing Wang	0.01 s	C++	2017-02-19 16:38:20
7	James Jaya	0.01 s	C++	2017-09-15 15:03:55
8	Kamiel Cornelissen	0.01 s	C++	2017-10-06 11:51:21
9	Neal Zane	0.01 s	C++	2018-01-16 02:53:37
10	Gal Zakrajsek	0.01 s	C++	2018-02-04 20:25:04

#	User	Runtime	Language	Date
1	Norbert Voelker	0.04 s	Go	2022-06-10 21:45:56
2	Josenildo Silva	0.10 s	Go	2018-04-18 21:13:17

#	User	Runtime	Language	Date
1	Jannik Olbrich	0.21 s	Haskell	2023-03-09 22:27:47

#	User	Runtime	Language	Date
1	Joshua Fair	0.08 s	Java	2018-03-21 21:55:58
2	Lewin Gan	0.09 s	Java	2016-11-19 01:09:11
3	Veronica Gunn	0.09 s	Java	2016-11-19 03:35:50
4	Ho Lyun Jeong	0.10 s	Java	2021-01-22 06:56:19
5	Bjørn Dons	0.10 s	Java	2023-01-30 20:40:18
6	Benjamin Reidys	0.11 s	Java	2019-02-09 00:11:46
7	Alex Coleman	0.12 s	Java	2017-03-02 18:10:17
8	Wouter Kool	0.14 s	Java	2018-10-25 08:23:39
9	Jarik Karsten	0.14 s	Java	2019-10-07 10:59:53
10	KL	0.15 s	Java	2022-06-02 11:31:57

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.14 s	JavaScript (SpiderMonkey)	2023-11-15 08:53:46

#	User	Runtime	Language	Date
1	Andreas Björklund	0.05 s	Python 2	2019-05-21 16:00:43
2	Måns Magnusson	0.07 s	Python 2	2018-10-29 22:04:40
3	Björn Magnusson	0.09 s	Python 2	2021-03-13 13:29:01
4	Fredrik Horn Dannert	0.09 s	Python 2	2021-03-19 15:24:52

#	User	Runtime	Language	Date
1	Isaac Lee	0.06 s	Python 3	2023-08-27 01:59:28
2	Jeroen Op de Beek	0.06 s	Python 3	2024-09-23 15:49:02
3	nicolas gomez	0.06 s	Python 3	2025-11-07 20:36:04
4	alexandre dewilde	0.07 s	Python 3	2023-08-07 08:22:08
5	Hidden user	0.07 s	Python 3	2024-10-13 19:47:21
6	Hugo Bäckman	0.07 s	Python 3	2025-03-21 10:53:07
7	Atli Fannar Franklín	0.07 s	Python 3	2025-08-16 16:08:36
8	Los Iteradores	0.07 s	Python 3	2025-11-07 19:55:06
9	Anirudh Sreerama	0.08 s	Python 3	2024-10-13 21:17:00
10	Jiaming Kong	0.08 s	Python 3	2025-08-08 04:30:26

#	User	Runtime	Language	Date
1	Thomas Feld	0.30 s	Ruby	2023-08-09 10:49:48

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2024-11-24 16:33:04

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Swift	2024-05-19 10:21:35

#	User	Length	Language	Date
1	Ivan Petrov	699	C	2019-03-28 15:28:02

#	User	Length	Language	Date
1	Teikn Smith	360	C++	2024-06-15 20:16:31
2	Erik Amirell Eklöf	367	C++	2019-05-15 14:37:54
3	Ciprian Stanciu	417	C++	2020-11-21 17:52:08
4	Lingsong Zeng	464	C++	2017-02-18 20:29:10
5	Hidden user	490	C++	2019-03-06 10:27:25
6	Hidden user	498	C++	2019-06-03 01:09:47
7	Marc Phua	499	C++	2020-06-26 17:47:04
8	Nguyễn Hà	500	C++	2018-03-07 05:14:49
9	Alexander Skidanov	502	C++	2024-11-08 17:12:50
10	Qianlang Chen	505	C++	2022-09-28 22:05:32

#	User	Length	Language	Date
1	Josenildo Silva	589	Go	2018-04-18 21:13:17
2	Norbert Voelker	1107	Go	2022-06-10 21:45:56

#	User	Length	Language	Date
1	Jannik Olbrich	183	Haskell	2023-03-09 23:29:18

#	User	Length	Language	Date
1	Veronica Gunn	782	Java	2016-11-19 03:35:50
2	KL	1338	Java	2022-06-02 11:31:57
3	Doug Goodman	1426	Java	2019-09-16 17:54:24
4	Alex Coleman	1588	Java	2017-03-02 18:10:17
5	Joshua Fair	1675	Java	2018-03-21 21:55:58
6	Jarik Karsten	2114	Java	2019-10-07 10:59:53
7	Benjamin Reidys	2212	Java	2019-02-09 00:11:46
8	Lewin Gan	2274	Java	2016-11-19 01:09:11
9	Wouter Kool	3240	Java	2018-10-25 08:23:39
10	Bjørn Dons	5529	Java	2023-01-30 20:40:18

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	377	JavaScript (SpiderMonkey)	2023-11-15 08:53:46

#	User	Length	Language	Date
1	Måns Magnusson	260	Python 2	2018-10-29 22:04:40
2	Björn Magnusson	293	Python 2	2021-03-13 13:29:01
3	Andreas Björklund	312	Python 2	2019-05-21 16:00:43
4	Fredrik Horn Dannert	323	Python 2	2021-03-19 15:24:52

#	User	Length	Language	Date
1	Yong Mao	184	Python 3	2023-08-04 23:45:59
2	Antonin R	185	Python 3	2023-02-17 13:50:26
3	Nicholas Russell Saerang	253	Python 3	2024-04-25 15:14:34
4	Isaac Lee	324	Python 3	2023-08-27 01:59:28
5	Jeroen Op de Beek	340	Python 3	2024-09-23 15:49:02
6	alexandre dewilde	347	Python 3	2023-08-07 08:22:08
7	Atli Fannar Franklín	357	Python 3	2025-08-16 16:08:36
8	Hidden user	408	Python 3	2024-10-13 19:47:21
9	Neel Kolhe	437	Python 3	2024-10-14 05:53:58
10	Vincent Tandya	472	Python 3	2021-04-11 14:27:50

#	User	Length	Language	Date
1	Thomas Feld	109	Ruby	2023-08-09 11:09:26

#	User	Length	Language	Date
1	Vincent Lagerros	697	Rust	2024-11-24 16:33:04

#	User	Length	Language	Date
1	Hidden user	498	Swift	2024-05-19 10:21:35

Solution running time distribution