Problem A
Robots on a Grid — Problem Statistics

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Submissions	4256
Accepted submissions	970
Submission ratio	22.79%
Authors	767
Full solves [?]	616
Full solve Ratio	80.31%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.02 s	C	2019-07-17 15:20:09
2	Hidden user	0.02 s	C	2023-01-03 14:02:26
3	Miguel Müller	0.03 s	C	2017-09-24 14:46:31
4	Lawry Sorenson	0.04 s	C	2023-09-08 19:34:18
5	Hidden user	0.05 s	C	2018-04-27 09:07:59
6	Hidden user	0.05 s	C	2022-02-04 00:38:38
7	Mathias Lind	0.06 s	C	2019-09-30 19:04:55
8	Eyleifur Bjarkason	0.07 s	C	2020-11-23 23:39:01
9	Bergur Snorrason	0.09 s	C	2019-07-21 15:24:43

#	User	Runtime	Language	Date
1	Ansis Ozoliņš	0.08 s	C#	2018-02-12 19:26:59
2	Māris Trušelis	0.08 s	C#	2018-02-14 08:04:53
3	Sandip Choudhary	0.17 s	C#	2024-11-10 13:01:07
4	Nikolaj Munk Binder Jensen	0.18 s	C#	2024-11-21 13:02:24
5	Ezequiel Padillo Molina	0.41 s	C#	2024-11-23 15:02:10
6	Emil Kastholm Fischer	0.72 s	C#	2020-11-06 08:40:40
7	Sebastian A Borch Andersen	0.96 s	C#	2024-11-17 18:37:38

#	User	Runtime	Language	Date
1	Tomas Lagland	0.02 s	C++	2017-09-23 16:05:34
2	Antoni Guz	0.02 s	C++	2018-02-22 12:12:05
3	Dmitry Lyubshin	0.02 s	C++	2018-06-14 19:45:46
4	Brian Kang	0.02 s	C++	2021-06-18 15:06:47
5	Cameron Custer	0.02 s	C++	2022-03-23 17:09:16
6	Hoàng Minh Nguyễn	0.02 s	C++	2022-05-06 21:22:02
7	Dayllon Xavier	0.02 s	C++	2023-01-23 19:00:08
8	Jakob Rødal Skaar	0.02 s	C++	2024-02-14 13:30:21
9	gard heine kalland	0.02 s	C++	2024-06-17 14:26:29
10	Phú Thịnh Phạm Hoài	0.03 s	C++	2018-01-04 08:55:22

#	User	Runtime	Language	Date
1	Norbert Voelker	0.04 s	Go	2023-11-19 23:09:58

#	User	Runtime	Language	Date
1	Ben Reed	0.12 s	Java	2022-02-13 02:37:02
2	Bjørn Dons	0.17 s	Java	2019-05-02 21:42:58
3	Crystal Sharpe	0.17 s	Java	2020-05-26 03:20:43
4	Siddharth Adusumelli	0.18 s	Java	2023-02-09 01:54:29
5	Samuel Klingström	0.20 s	Java	2018-12-15 01:16:11
6	Liam Keliher	0.25 s	Java	2020-05-19 21:02:07
7	Brent Yorgey	0.26 s	Java	2018-12-08 18:10:02
8	Josenildo Silva	0.27 s	Java	2018-06-22 16:16:25
9	Andreas Jansson	0.27 s	Java	2018-09-28 11:28:11
10	Siddharth Adusumelli	0.27 s	Java	2023-02-06 08:12:48

#	User	Runtime	Language	Date
1	Johannes Jensen	0.75 s	JavaScript (SpiderMonkey)	2022-01-05 09:09:29
2	Christian Pilegaard Cederquist	0.95 s	JavaScript (SpiderMonkey)	2023-08-23 09:14:50

#	User	Runtime	Language	Date
1	Timothy Gaede	0.75 s	Julia	2025-06-15 05:01:44

#	User	Runtime	Language	Date
1	Benjamin Ye	0.35 s	Kotlin	2023-02-12 19:58:20
2	Jacob Huebner	0.54 s	Kotlin	2020-03-11 13:23:29

#	User	Runtime	Language	Date
1	luna	0.21 s	OCaml	2024-04-12 20:16:56

#	User	Runtime	Language	Date
1	Trường Nhật Dương	0.05 s	Pascal	2018-01-04 08:23:42

#	User	Runtime	Language	Date
1	Kevin Tang	0.16 s	Python 2	2019-10-22 23:57:57
2	Andreas Björklund	0.19 s	Python 2	2019-05-05 13:37:33
3	Måns Magnusson	0.27 s	Python 2	2018-10-22 22:06:54
4	Maj Stenmark	0.34 s	Python 2	2018-08-15 19:52:35
5	Steven Hwang	0.62 s	Python 2	2019-11-20 19:36:58
6	Johann Ly	0.65 s	Python 2	2018-12-24 22:38:58
7	Isaac Lee	0.78 s	Python 2	2020-05-26 02:14:07
8	Hansel Qiu	0.92 s	Python 2	2019-03-25 08:35:32
9	Noah Ó Donnaile	0.95 s	Python 2	2018-03-27 17:39:55
10	Selah Lawrensen	0.98 s	Python 2	2019-12-13 22:35:29

#	User	Runtime	Language	Date
1	Mattéo Delabre	0.16 s	Python 3	2022-11-24 22:39:44
2	Inge Li Gørtz	0.18 s	Python 3	2023-09-14 14:56:49
3	Brian Sen	0.18 s	Python 3	2025-10-23 21:02:27
4	Simon Rumle Tarnow	0.20 s	Python 3	2023-09-28 11:38:48
5	Erik Buur Christensen	0.20 s	Python 3	2023-09-28 11:39:08
6	Yong Mao	0.21 s	Python 3	2023-06-11 02:01:24
7	Adam Ajane	0.21 s	Python 3	2023-09-28 11:39:37
8	Adrian Zvizdenco	0.22 s	Python 3	2023-10-06 11:44:20
9	Nikolaj Munk Binder Jensen	0.27 s	Python 3	2024-11-19 12:01:00
10	Yi-Min Seah	0.28 s	Python 3	2022-01-30 11:12:59

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2025-06-04 01:04:04
2	Valdemar Friis	0.03 s	Rust	2023-09-08 10:54:07
3	Yoeri Otten	0.08 s	Rust	2022-10-05 17:29:45
4	Erik Magnusson	0.64 s	Rust	2024-12-10 12:02:50
5	C3Speedrun2024	0.64 s	Rust	2024-12-10 12:03:39

#	User	Length	Language	Date
1	Lawry Sorenson	1181	C	2023-09-08 19:32:17
2	Hidden user	1919	C	2018-04-27 09:07:59
3	Miguel Müller	1928	C	2017-09-23 21:43:01
4	Hidden user	2033	C	2023-01-03 14:02:26
5	Bergur Snorrason	2613	C	2019-07-21 15:24:43
6	Hidden user	2926	C	2022-02-04 00:38:38
7	Ivan Petrov	3224	C	2019-07-17 15:20:09
8	Mathias Lind	4622	C	2019-09-30 19:04:55
9	Eyleifur Bjarkason	8847	C	2020-11-23 23:41:59

#	User	Length	Language	Date
1	Ansis Ozoliņš	2361	C#	2018-02-12 21:52:25
2	Māris Trušelis	2361	C#	2018-02-14 08:04:53
3	Sebastian A Borch Andersen	3041	C#	2024-11-17 19:19:04
4	Emil Kastholm Fischer	3344	C#	2020-11-06 08:40:40
5	Sandip Choudhary	3593	C#	2024-11-10 13:01:07
6	Nikolaj Munk Binder Jensen	3893	C#	2024-11-21 13:02:24
7	Ezequiel Padillo Molina	3972	C#	2024-11-23 15:02:10

#	User	Length	Language	Date
1	Johan Wind	713	C++	2018-10-20 18:57:46
2	bekarhunmain	926	C++	2024-08-14 06:21:30
3	Heitor Leite	931	C++	2023-01-23 17:59:10
4	Jiang Yue	965	C++	2018-02-07 03:41:01
5	Kenzo Nobre	982	C++	2023-01-23 17:50:14
6	Luana Amorim	992	C++	2023-01-23 18:00:53
7	Hidden user	1007	C++	2025-01-06 08:24:06
8	Pedro Suyama Leston Rey	1018	C++	2023-01-23 18:10:14
9	Hidden user	1030	C++	2024-10-08 13:30:13
10	Daniel de Matos	1031	C++	2023-01-23 17:50:31

#	User	Length	Language	Date
1	Norbert Voelker	1116	Go	2023-11-19 22:43:20

#	User	Length	Language	Date
1	Hidden user	1104	Java	2023-02-15 11:03:09
2	Doug Goodman	1222	Java	2018-04-21 18:06:51
3	Dominic Reed	1264	Java	2022-04-21 04:08:11
4	Siddharth Adusumelli	1269	Java	2023-02-09 02:13:03
5	Siddharth Adusumelli	1370	Java	2023-02-06 08:24:31
6	Andy Phan	1407	Java	2019-01-03 23:02:29
7	Åke Wettergren	1429	Java	2018-10-05 15:18:24
8	Timothy Buzzelli	1586	Java	2019-01-03 18:57:13
9	Ali Pervaiz	1651	Java	2019-06-25 16:15:28
10	Arup Ratan Guha	1678	Java	2019-01-03 00:45:09

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	1175	JavaScript (SpiderMonkey)	2023-08-23 09:14:50
2	Johannes Jensen	2614	JavaScript (SpiderMonkey)	2022-01-05 09:09:29

#	User	Length	Language	Date
1	Timothy Gaede	1884	Julia	2025-06-15 05:01:44

#	User	Length	Language	Date
1	Benjamin Ye	1208	Kotlin	2023-02-12 19:58:20
2	Jacob Huebner	2526	Kotlin	2020-03-11 13:23:29

#	User	Length	Language	Date
1	luna	1924	OCaml	2024-04-12 20:16:56

#	User	Length	Language	Date
1	Trường Nhật Dương	1149	Pascal	2018-01-04 08:23:42

#	User	Length	Language	Date
1	Andreas Björklund	845	Python 2	2019-05-05 13:37:33
2	Måns Magnusson	881	Python 2	2018-10-22 22:02:23
3	Maj Stenmark	1008	Python 2	2018-08-15 19:52:35
4	Kevin Tang	1151	Python 2	2019-10-22 23:57:57
5	Noah Ó Donnaile	1181	Python 2	2018-03-27 17:39:55
6	Iris Nguyen	1181	Python 2	2019-12-11 07:49:23
7	Selah Lawrensen	1181	Python 2	2019-12-13 22:35:29
8	Isaac Lee	1219	Python 2	2020-05-26 02:14:07
9	Johann Ly	1490	Python 2	2018-12-24 22:38:58
10	Steven Hwang	1506	Python 2	2019-11-20 19:36:58

#	User	Length	Language	Date
1	Kelly Dance	734	Python 3	2022-10-06 02:41:31
2	Yong Mao	820	Python 3	2023-06-11 02:01:24
3	Benjamin Z White	868	Python 3	2023-06-04 09:06:50
4	Daniel Lokshtanov	977	Python 3	2025-10-14 05:59:26
5	Nicholas Russell Saerang	983	Python 3	2023-02-16 21:12:40
6	Nikolaj Munk Binder Jensen	990	Python 3	2024-11-21 13:14:03
7	Ahmed Mhedhbi	998	Python 3	2023-10-11 05:28:14
8	Ole Vik Lysne	1000	Python 3	2025-05-03 12:00:07
9	Prajwal Vandana	1004	Python 3	2025-10-21 01:20:23
10	Steinar Simonnes	1010	Python 3	2025-05-03 11:36:45

#	User	Length	Language	Date
1	Valdemar Friis	2282	Rust	2023-09-08 10:54:07
2	Yoeri Otten	3066	Rust	2022-10-05 17:29:45
3	Erik Magnusson	5599	Rust	2024-12-10 12:02:50
4	C3Speedrun2024	5599	Rust	2024-12-10 12:03:39
5	Vincent Lagerros	59724	Rust	2025-06-04 01:04:04

Solution running time distribution