Problem A
Malfunctioning Robot — Problem Statistics

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Submissions	1436
Accepted submissions	396
Submission ratio	27.58%
Authors	464
Full solves [?]	349
Full solve Ratio	75.22%

#	User	Runtime	Language	Date
1	Thomas Feld	0.19 s	APL	2023-03-22 16:03:59

#	User	Runtime	Language	Date
1	Axel Delbom	0.00 s	C	2021-04-13 21:58:45
2	Akshiro	0.00 s	C	2021-10-22 14:22:40
3	Raymond Yang	0.00 s	C	2021-12-31 01:33:29
4	Allan Nouri	0.00 s	C	2023-04-12 15:55:29

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.03 s	C#	2021-06-16 00:33:13

#	User	Runtime	Language	Date
1	Bùi Trung Hải	0.08 s	Go	2020-11-15 07:21:41
2	Norbert Voelker	0.08 s	Go	2021-07-28 21:55:40
3	Nyamdavaa Amar	0.14 s	Go	2022-04-21 05:19:24

#	User	Runtime	Language	Date
1	Brent Yorgey	0.02 s	Haskell	2020-12-23 05:06:56
2	Jan Hrček	0.02 s	Haskell	2021-04-04 10:35:12
3	Hidden user	0.02 s	Haskell	2021-06-07 16:58:29
4	Agus Sentosa Hermawan	0.02 s	Haskell	2021-10-31 12:54:18
5	Ng Tek In	0.02 s	Haskell	2022-09-04 18:58:11

#	User	Runtime	Language	Date
1	Crystal Sharpe	0.07 s	Java	2020-12-22 06:02:51
2	Bjørn Dons	0.07 s	Java	2020-12-25 22:08:39
3	Sven Rönnbäck	0.07 s	Java	2021-02-06 17:59:27
4	Đức Cừ Trần	0.10 s	Java	2020-11-17 05:33:16
5	Steven Cheng	0.10 s	Java	2020-12-22 00:08:51
6	Ho Lyun Jeong	0.11 s	Java	2021-12-30 03:15:30
7	Ranjith M	0.12 s	Java	2023-05-28 23:32:31
8	Ethan Fan	0.20 s	Java	2022-01-02 01:14:57
9	Nathaniel Lahn	0.20 s	Java	2022-01-26 22:26:33
10	Brennan C	0.20 s	Java	2022-02-02 23:09:36

#	User	Runtime	Language	Date
1	Axel Delbom	0.45 s	JavaScript (Node.js)	2021-04-18 02:03:12

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2020-12-27 14:49:31
2	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-06-17 22:48:27

#	User	Runtime	Language	Date
1	Taylor South	0.30 s	Kotlin	2025-03-18 22:45:18

#	User	Runtime	Language	Date
1	Andreas Björklund	0.05 s	Python 2	2020-12-25 15:37:04
2	Hoàng	0.05 s	Python 2	2021-06-30 04:23:20

#	User	Runtime	Language	Date
1	Van Thien	0.04 s	Python 3	2025-07-23 10:33:49
2	Anonymous	0.04 s	Python 3	2025-12-05 17:03:02
3	Ram Basnet	0.06 s	Python 3	2021-12-12 22:15:31
4	Bastien Moron	0.06 s	Python 3	2022-12-20 18:09:47
5	Benjamin Z White	0.06 s	Python 3	2023-05-24 22:21:39
6	Jordan Chan	0.06 s	Python 3	2023-06-08 15:29:44
7	Omair Syed	0.06 s	Python 3	2024-08-28 20:52:55
8	Ingvar Þór Jónsson	0.06 s	Python 3	2025-01-13 18:58:22
9	Hrant Hovhannisyan	0.06 s	Python 3	2025-02-20 05:35:42
10	WalkerKnapp	0.06 s	Python 3	2025-03-18 22:14:11

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2020-12-26 06:44:09
2	Thomas Feld	0.06 s	Ruby	2023-03-22 15:39:04

#	User	Runtime	Language	Date
1	Muhammad Rais Fathin Mudzakir	0.00 s	Rust	2021-05-30 10:04:39
2	Atli Fannar Franklín	0.00 s	Rust	2022-01-11 13:44:47
3	Bas Dirks	0.00 s	Rust	2022-01-20 11:45:00
4	poppyer	0.00 s	Rust	2022-05-05 05:16:06

#	User	Length	Language	Date
1	Thomas Feld	79	APL	2023-03-22 16:03:59

#	User	Length	Language	Date
1	Axel Delbom	500	C	2021-04-13 21:58:45
2	Raymond Yang	515	C	2021-12-31 01:33:29
3	Allan Nouri	793	C	2023-04-12 15:55:29
4	Akshiro	801	C	2021-10-22 14:23:02

#	User	Length	Language	Date
1	Mikael Fiala-Lundström	846	C#	2021-06-16 00:33:13

#	User	Length	Language	Date
1	Văn Hiệp	294	C++	2023-03-18 04:59:33
2	Hoàng Hưng Võ Trung	298	C++	2021-12-08 19:43:00
3	Tôn Thất Hải	310	C++	2022-02-16 10:43:21
4	Hidden user	313	C++	2021-06-30 05:35:19
5	YanHao Ling	327	C++	2020-11-15 02:09:02
6	Magnus Hegdahl	329	C++	2021-10-20 17:32:58
7	Khôi Đình Võ	342	C++	2020-11-21 07:19:01
8	Thanh tra phòng CTSV	342	C++	2021-11-30 19:58:04
9	Thuan Truong Quoc	344	C++	2020-12-22 06:08:37
10	Alexander Skidanov	348	C++	2024-10-31 15:18:04

#	User	Length	Language	Date
1	Nyamdavaa Amar	429	Go	2022-04-21 05:19:24
2	Bùi Trung Hải	656	Go	2020-11-15 07:21:41
3	Norbert Voelker	1294	Go	2021-07-28 21:55:40

#	User	Length	Language	Date
1	Agus Sentosa Hermawan	385	Haskell	2021-10-31 12:54:18
2	Brent Yorgey	443	Haskell	2020-12-23 05:06:56
3	Jan Hrček	517	Haskell	2021-04-04 10:36:19
4	Ng Tek In	821	Haskell	2022-09-04 18:58:11
5	Hidden user	11883	Haskell	2021-06-07 16:58:29

#	User	Length	Language	Date
1	Leslie Yip	468	Java	2023-06-20 07:28:51
2	Doug Goodman	639	Java	2021-07-27 19:53:29
3	Crystal Sharpe	920	Java	2020-12-22 06:02:51
4	Nathaniel Lahn	948	Java	2022-01-26 22:26:33
5	Brennan C	1208	Java	2022-02-02 23:09:36
6	Ethan Fan	1277	Java	2022-01-02 01:14:57
7	Hidden user	2009	Java	2022-09-09 08:35:00
8	Sven Rönnbäck	2086	Java	2021-02-06 17:59:27
9	Ranjith M	2700	Java	2023-05-28 23:32:31
10	Steven Cheng	3749	Java	2020-12-22 00:08:51

#	User	Length	Language	Date
1	Axel Delbom	422	JavaScript (Node.js)	2021-04-18 02:03:12

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	223	JavaScript (SpiderMonkey)	2023-06-17 22:48:27
2	Bjørn Chr. Soltvedt	372	JavaScript (SpiderMonkey)	2020-12-27 14:49:31

#	User	Length	Language	Date
1	Taylor South	1238	Kotlin	2025-03-18 22:45:18

#	User	Length	Language	Date
1	Andreas Björklund	256	Python 2	2020-12-25 15:37:04
2	Hoàng	311	Python 2	2021-06-30 04:23:20

#	User	Length	Language	Date
1	Benjamin Z White	114	Python 3	2023-05-24 22:30:14
2	Michael Goldwasser	123	Python 3	2024-08-22 07:31:28
3	Peter Stauder	126	Python 3	2022-10-31 21:41:21
4	Yong Mao	130	Python 3	2022-11-28 04:40:30
5	Lee Isaac	133	Python 3	2021-08-10 11:04:02
6	Nicholas Russell Saerang	149	Python 3	2023-02-15 22:59:54
7	Sidharth Sundar	154	Python 3	2023-02-13 20:57:03
8	Clement Oh	159	Python 3	2024-03-01 11:51:57
9	Zac Friggstad	169	Python 3	2021-02-19 21:58:09
10	Jón Steinn Elíasson	171	Python 3	2022-10-08 18:45:15

#	User	Length	Language	Date
1	Thomas Feld	74	Ruby	2023-03-22 15:43:02
2	Hidden user	156	Ruby	2020-12-26 06:44:09

#	User	Length	Language	Date
1	Bas Dirks	634	Rust	2022-01-20 11:45:00
2	poppyer	694	Rust	2022-05-05 05:16:06
3	Atli Fannar Franklín	707	Rust	2022-01-11 13:44:47
4	Muhammad Rais Fathin Mudzakir	4198	Rust	2021-05-30 10:04:39

Solution running time distribution