Problem A
Roomba 1 — Problem Statistics

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Submissions	724
Accepted submissions	594
Submission ratio	82.04%
Authors	166
Accepted authors	158
Author ratio	95.18%

#	User	Score	Language	Date
1	Chenzhang Hu	100	Bash	2025-02-28 16:04:31

#	User	Score	Language	Date
1	Eyleifur Bjarkason	100	C	2025-07-17 03:53:41
2	Lydia	50	C	2025-01-23 21:51:23

#	User	Score	Language	Date
1	Ólafur Andri	100	C#	2017-03-06 12:03:39
2	Inge Amdal Halvorsen	100	C#	2025-02-28 15:54:42
3	Viktor Máni Mönster	50	C#	2017-03-09 23:08:24

#	User	Score	Language	Date
1	Hidden user	100	Go	2021-10-24 02:46:41

#	User	Score	Language	Date
1	Steinar Simonnes	100	Haskell	2024-11-29 21:15:46
2	Brent Yorgey	100	Haskell	2024-11-29 23:55:13
3	Baktucsok	100	Haskell	2025-07-04 12:46:49

#	User	Score	Language	Date
1	Bjørn Dons	100	Java	2025-02-16 21:45:53
2	Hunter Mullen	100	Java	2025-01-28 23:40:02
3	Sindri Magnusson	100	Java	2017-10-05 01:28:52
4	eti2	100	Java	2021-05-07 16:38:23
5	Vaishnavi Kouru	60	Java	2025-04-13 00:48:38
6	Aidan Spies	50	Java	2025-04-13 01:29:25
7	James Nguyen	50	Java	2025-04-13 01:26:15
8	Cooper Smythe	40	Java	2025-05-22 15:16:30
9	Martha E.	40	Java	2024-12-30 19:35:55
10	Davíð Phuong Xuan Nguyen	40	Java	2017-03-15 18:34:34

#	User	Score	Language	Date
1	Kjartan Óli Ágústsson	100	JavaScript (Node.js)	2019-02-11 11:51:20
2	Samúel Arnar Hafsteinsson	100	JavaScript (Node.js)	2019-02-11 11:52:02
3	Nos iens experior	100	JavaScript (Node.js)	2019-04-13 01:05:27
4	Róbert Kristian Freysson	100	JavaScript (Node.js)	2024-03-01 23:47:22

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	100	JavaScript (SpiderMonkey)	2024-11-27 21:32:51

#	User	Score	Language	Date
1	Timothy Gaede	10	Julia	2025-04-22 17:50:52

#	User	Score	Language	Date
1	주안석	100	Pascal	2017-11-27 18:04:57

#	User	Score	Language	Date
1	Sigurður Jens Albertsson	100	Python 2	2018-01-12 00:01:15
2	Bernhard Kartefla	100	Python 2	2017-02-16 13:15:20
3	Guðni Natan Gunnarsson	100	Python 2	2017-02-18 02:12:00
4	Bjarki Fannar Snorrason	100	Python 2	2017-02-22 14:08:44
5	Dagur Benjamínsson	40	Python 2	2019-02-11 11:37:38
6	Viktor Saevarsson	10	Python 2	2016-03-22 14:11:21

#	User	Score	Language	Date
1	Thomas Feld	100	Ruby	2025-02-14 14:59:23

#	User	Score	Language	Date
1	Vincent Lagerros	100	Rust	2025-01-24 20:43:15
2	Hidden user	100	Rust	2025-05-24 17:38:11
3	Frank Endriss	100	Rust	2025-07-21 18:29:57

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.02 s	Bash	2025-02-28 16:04:31

#	User	Runtime	Language	Date
1	Eyleifur Bjarkason	0.00 s	C	2025-07-17 03:53:41

#	User	Runtime	Language	Date
1	Ólafur Andri	0.05 s	C#	2017-03-06 12:03:39
2	Inge Amdal Halvorsen	0.05 s	C#	2025-02-28 15:54:42

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Go	2021-10-24 02:46:41

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2024-11-29 21:15:46
2	Brent Yorgey	0.00 s	Haskell	2024-11-29 23:55:13
3	Baktucsok	0.00 s	Haskell	2025-07-04 12:46:49

#	User	Runtime	Language	Date
1	Bjørn Dons	0.04 s	Java	2025-02-16 21:45:53
2	Hunter Mullen	0.08 s	Java	2025-01-28 23:40:02
3	Sindri Magnusson	0.10 s	Java	2017-10-05 01:28:52
4	eti2	0.10 s	Java	2021-05-07 16:38:23

#	User	Runtime	Language	Date
1	Kjartan Óli Ágústsson	0.05 s	JavaScript (Node.js)	2019-02-11 11:51:20
2	Samúel Arnar Hafsteinsson	0.05 s	JavaScript (Node.js)	2019-02-11 11:52:02
3	Nos iens experior	0.05 s	JavaScript (Node.js)	2019-04-13 01:05:27
4	Róbert Kristian Freysson	0.05 s	JavaScript (Node.js)	2024-03-01 23:47:22

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2024-11-27 21:32:51

#	User	Runtime	Language	Date
1	주안석	0.00 s	Pascal	2017-11-27 18:04:57

#	User	Runtime	Language	Date
1	Sigurður Jens Albertsson	0.07 s	Python 2	2018-01-12 00:01:15
2	Bernhard Kartefla	0.08 s	Python 2	2017-02-16 13:15:20
3	Guðni Natan Gunnarsson	0.08 s	Python 2	2017-02-18 02:12:00
4	Bjarki Fannar Snorrason	0.08 s	Python 2	2017-02-22 14:08:44

#	User	Runtime	Language	Date
1	James Elías Sigurðarson	0.04 s	Python 3	2016-03-19 16:33:44
2	Óðinn Eyjólfsson	0.04 s	Python 3	2016-03-19 20:46:05
3	Atli Fannar Franklín	0.04 s	Python 3	2016-03-19 21:58:19
4	Elvar Árni Sturluson	0.04 s	Python 3	2017-02-14 18:33:06
5	Jóhannes Guðjónsson	0.04 s	Python 3	2017-03-01 10:16:08
6	Eiríkur Jóhannssson	0.04 s	Python 3	2017-03-01 10:19:02
7	Arnþór Daði Jónasson	0.04 s	Python 3	2017-03-01 10:25:03
8	Gamithra Marga	0.04 s	Python 3	2017-12-03 17:41:20
9	Tristan Ferrua Edwardsson	0.04 s	Python 3	2018-03-15 00:28:05
10	すうぇっりえるはこん	0.04 s	Python 3	2018-03-23 03:47:28

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2025-02-14 14:59:23

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2025-01-24 20:43:15
2	Hidden user	0.00 s	Rust	2025-05-24 17:38:11
3	Frank Endriss	0.00 s	Rust	2025-07-21 18:29:57

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2025-02-28 16:04:31

#	User	Length	Language	Date
1	Eyleifur Bjarkason	1585	C	2025-07-17 03:53:41

#	User	Length	Language	Date
1	Inge Amdal Halvorsen	472	C#	2025-02-28 16:05:57
2	Ólafur Andri	823	C#	2018-03-01 15:19:57

#	User	Length	Language	Date
1	Frans Meulenbroeks	97	C++	2025-04-16 23:10:08
2	Jiayi Liu	263	C++	2025-08-10 00:40:41
3	Björn Gunnarsson	275	C++	2016-03-28 19:02:01
4	Jesús Pacheco Alonso	286	C++	2024-11-27 20:11:52
5	Mikael Máni Jónsson	315	C++	2018-03-20 01:07:48
6	Kristinn Hrafn Daníelsson	315	C++	2023-08-20 02:09:58
7	Baktucsok	317	C++	2025-07-04 12:26:45
8	Mack Wong Yoong Yee	342	C++	2025-06-07 05:00:59
9	David I	350	C++	2025-08-08 02:19:49
10	Arnar Bjarni Arnarson	358	C++	2016-03-19 13:21:20

#	User	Length	Language	Date
1	Hidden user	1362	Go	2021-10-24 02:46:41

#	User	Length	Language	Date
1	Baktucsok	274	Haskell	2025-07-04 12:46:49
2	Brent Yorgey	302	Haskell	2024-11-29 23:55:13
3	Steinar Simonnes	386	Haskell	2024-11-29 21:15:46

#	User	Length	Language	Date
1	eti2	380	Java	2021-05-07 16:38:23
2	Sindri Magnusson	396	Java	2017-10-05 01:28:52
3	Hunter Mullen	480	Java	2025-01-28 23:40:02
4	Bjørn Dons	4755	Java	2025-02-16 21:45:53

#	User	Length	Language	Date
1	Róbert Kristian Freysson	454	JavaScript (Node.js)	2024-03-01 23:47:22
2	Nos iens experior	713	JavaScript (Node.js)	2019-04-13 01:05:27
3	Kjartan Óli Ágústsson	719	JavaScript (Node.js)	2019-02-11 11:51:20
4	Samúel Arnar Hafsteinsson	719	JavaScript (Node.js)	2019-02-11 11:52:02

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	113	JavaScript (SpiderMonkey)	2024-11-27 21:49:01

#	User	Length	Language	Date
1	주안석	229	Pascal	2017-11-27 18:04:57

#	User	Length	Language	Date
1	Sigurður Jens Albertsson	124	Python 2	2018-01-12 00:01:15
2	Bernhard Kartefla	146	Python 2	2017-02-16 13:15:20
3	Bjarki Fannar Snorrason	201	Python 2	2017-02-22 14:08:44
4	Guðni Natan Gunnarsson	215	Python 2	2017-02-18 02:19:43

#	User	Length	Language	Date
1	Nicholas Russell Saerang	70	Python 3	2024-12-12 11:08:59
2	Jonathan Cederlund	83	Python 3	2025-04-23 14:29:05
3	Jón Benediktsson	90	Python 3	2019-01-31 15:39:54
4	Ahmed Chamseddine	90	Python 3	2025-05-20 08:23:00
5	Sindri Freysson	96	Python 3	2024-03-03 22:57:09
6	Apríl Rós	115	Python 3	2025-03-03 18:41:12
7	Sander Oppen	120	Python 3	2024-11-27 19:06:09
8	Iman Khodadi	130	Python 3	2025-03-20 08:20:59
9	Harry Zhang	132	Python 3	2025-05-17 12:09:22
10	Simen Sørensen	133	Python 3	2025-08-02 14:27:20

#	User	Length	Language	Date
1	Thomas Feld	46	Ruby	2025-02-14 15:20:34

#	User	Length	Language	Date
1	Vincent Lagerros	523	Rust	2025-01-24 20:43:15
2	Frank Endriss	1998	Rust	2025-07-21 18:29:57
3	Hidden user	7396	Rust	2025-05-24 17:38:11

Solution running time distribution