Problem A
One-Way Roads — Problem Statistics

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Submissions	451
Accepted submissions	145
Submission ratio	32.15%
Authors	131
Accepted authors	93
Author ratio	70.99%

#	User	Runtime	Language	Date
1	Finn Lidbetter	0.07 s	Java	2017-09-12 04:06:54
2	Logan Pipes	0.09 s	Java	2022-07-15 04:41:34
3	Micah Stairs	0.14 s	Java	2016-12-31 16:05:54
4	Remy Instefjord Uthaug	0.15 s	Java	2022-01-28 15:23:04
5	Simen Eggebø	0.15 s	Java	2022-02-03 13:39:56
6	Doug Goodman	0.28 s	Java	2019-07-24 21:08:57
7	Ting Kwok Poon	0.34 s	Java	2021-06-07 11:26:31

#	User	Runtime	Language	Date
1	Benjamin Ye	0.27 s	Kotlin	2023-01-23 22:13:37

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Python 3	2018-09-15 06:36:41
2	Henrik Olsen Eide	0.07 s	Python 3	2022-02-05 00:18:29
3	alexandre dewilde	0.08 s	Python 3	2023-09-02 10:35:45
4	Ole Vik Lysne	0.08 s	Python 3	2024-05-28 20:44:37
5	Carter Snook	0.08 s	Python 3	2025-04-13 20:03:06
6	Nhat Anh Bui	0.08 s	Python 3	2025-04-14 02:03:23
7	testtest	0.09 s	Python 3	2022-01-28 02:32:49
8	Eivind Skarstein	0.09 s	Python 3	2022-01-29 06:27:45
9	Tony Kwan	0.09 s	Python 3	2023-01-05 17:35:16
10	Anshuman Dash	0.09 s	Python 3	2023-01-20 01:01:19

#	User	Runtime	Language	Date
1	Ivy Wang	0.10 s	Ruby	2023-01-20 00:15:59

#	User	Runtime	Language	Date
1	Yoeri Otten	0.00 s	Rust	2022-02-10 22:19:27
2	Jianghua Wang	0.00 s	Rust	2023-01-30 19:40:29

#	User	Length	Language	Date
1	Tin Vuong	536	C++	2024-01-27 06:22:52
2	Mathias Gernez	540	C++	2023-09-02 00:12:48
3	Tuukka Korhonen	740	C++	2022-01-21 14:44:21
4	Johan Wind	852	C++	2018-11-20 23:10:07
5	Ragur Krishnan	887	C++	2018-09-15 06:05:28
6	Simone Moretti	899	C++	2021-10-07 23:16:09
7	Jeremy Lim	980	C++	2024-12-01 20:02:45
8	Magnus Hokland Hegdahl	1028	C++	2022-01-21 16:21:16
9	Fredrik Hernqvist	1080	C++	2016-12-13 18:25:30
10	Zac Friggstad	1117	C++	2018-09-15 03:31:20

#	User	Length	Language	Date
1	Doug Goodman	2280	Java	2019-07-24 21:08:57
2	Ting Kwok Poon	2591	Java	2021-06-07 11:26:31
3	Finn Lidbetter	2798	Java	2017-09-12 04:06:54
4	Micah Stairs	3374	Java	2016-12-31 16:05:54
5	Simen Eggebø	4730	Java	2022-02-03 13:39:56
6	Logan Pipes	4734	Java	2022-07-15 04:48:10
7	Remy Instefjord Uthaug	6082	Java	2022-01-28 15:23:04

#	User	Length	Language	Date
1	Benjamin Ye	1183	Kotlin	2023-01-23 22:13:37

#	User	Length	Language	Date
1	Anshuman Dash	661	Python 3	2023-01-20 01:01:19
2	Nhat Anh Bui	727	Python 3	2025-04-14 02:03:23
3	Carter Snook	801	Python 3	2025-04-13 20:03:06
4	Hidden user	1020	Python 3	2018-09-15 06:36:41
5	Zachary Miller	1110	Python 3	2023-01-26 04:33:56
6	Justin Nguyen Vo	1125	Python 3	2023-01-18 08:10:11
7	Luke Vandevoorde	1184	Python 3	2023-01-18 08:33:15
8	alexandre dewilde	1226	Python 3	2023-09-02 10:35:45
9	Henrik Olsen Eide	1372	Python 3	2022-02-05 00:18:29
10	Nicholas Bachmann Tjørnelund	1384	Python 3	2020-07-30 12:21:04

#	User	Length	Language	Date
1	Ivy Wang	843	Ruby	2023-01-26 19:04:46

#	User	Length	Language	Date
1	Jianghua Wang	2527	Rust	2023-01-30 19:40:29
2	Yoeri Otten	5372	Rust	2022-02-10 22:19:27

Solution running time distribution