Problem A
Space Junk — Problem Statistics

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Submissions	1824
Accepted submissions	451
Submission ratio	24.73%
Authors	377
Full solves [?]	321
Full solve Ratio	85.15%

#	User	Runtime	Language	Date
1	Adam Evans	0.00 s	C	2016-10-22 20:27:13
2	Anton Siderud	0.00 s	C	2020-04-24 14:09:38
3	Marcus Blücher	0.00 s	C	2020-04-24 14:19:11
4	Ioannis Br	0.00 s	C	2020-04-25 12:10:42
5	Bergur Snorrason	0.00 s	C	2022-02-20 18:04:35
6	Mirel Cosulschi	0.00 s	C	2025-06-09 11:05:15
7	Ivan Petrov	0.01 s	C	2019-07-23 09:09:03

#	User	Runtime	Language	Date
1	Andrzej Krajniak	0.02 s	C#	2017-11-08 20:33:58
2	Gurra Bern	0.03 s	C#	2022-08-09 16:42:23
3	Jens Erik	0.05 s	C#	2025-11-18 22:30:46
4	Simon Thillemann Nielsen	0.05 s	C#	2025-11-18 22:52:58

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2022-10-18 12:36:24

#	User	Runtime	Language	Date
1	Brent Yorgey	0.02 s	Haskell	2021-01-03 20:36:55

#	User	Runtime	Language	Date
1	Bjørn Dons	0.06 s	Java	2018-12-13 01:08:22
2	Sven Rönnbäck	0.07 s	Java	2023-10-22 19:19:33
3	Erik Baalhuis	0.08 s	Java	2016-08-03 22:43:26
4	Mohammad Haider	0.08 s	Java	2016-10-23 20:53:20
5	Alyssa Herbst	0.08 s	Java	2016-10-23 20:55:08
6	James Black	0.08 s	Java	2018-07-06 02:22:10
7	Liam Keliher	0.08 s	Java	2018-07-08 18:01:23
8	Finn Lidbetter	0.09 s	Java	2016-06-19 20:55:26
9	Joshua Alman	0.09 s	Java	2016-10-22 18:43:53
10	Xingfang Yuan	0.09 s	Java	2016-10-22 22:36:56

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.10 s	JavaScript (SpiderMonkey)	2024-10-20 00:23:08

#	User	Runtime	Language	Date
1	Jacob Huebner	0.17 s	Kotlin	2021-04-29 07:55:08

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.03 s	Prolog	2024-04-10 07:23:57

#	User	Runtime	Language	Date
1	Kevin Li	0.04 s	Python 2	2016-10-22 18:51:02
2	Logan Su	0.04 s	Python 2	2016-10-22 18:53:47
3	Hermon Mulat	0.04 s	Python 2	2018-10-13 23:59:00
4	Michael Laszlo	0.05 s	Python 2	2016-12-28 02:57:57
5	Godmar Back	0.06 s	Python 2	2016-10-23 02:01:13
6	Jeff Robertson	0.09 s	Python 2	2017-10-26 00:24:35
7	Renato Ferreira	0.10 s	Python 2	2016-10-22 20:41:45

#	User	Runtime	Language	Date
1	Mikael Hedin	0.02 s	Python 3	2016-04-07 11:42:20
2	Joshua Zygmunt	0.02 s	Python 3	2017-04-22 00:38:02
3	Rabnoor Singh	0.02 s	Python 3	2019-10-05 23:47:05
4	Andy Rock	0.03 s	Python 3	2016-10-22 20:15:16
5	Isaac Lee	0.03 s	Python 3	2018-07-08 19:33:28
6	Noah Weninger	0.03 s	Python 3	2019-01-01 06:41:38
7	Andreas Björklund	0.05 s	Python 3	2022-09-21 17:44:06
8	Aedan Stewart	0.05 s	Python 3	2025-05-13 01:21:36
9	Qasim Khawaja	0.06 s	Python 3	2022-03-10 06:50:29
10	Ahmed Siadomar	0.06 s	Python 3	2023-01-23 06:39:43

#	User	Runtime	Language	Date
1	Thomas Feld	0.07 s	Ruby	2023-10-09 11:28:28

#	User	Runtime	Language	Date
1	Akemi Izuko	0.00 s	Rust	2022-10-29 00:33:32
2	Aaron Lengyel	0.00 s	Rust	2022-11-12 00:42:39
3	Viktor Sandström	0.02 s	Rust	2023-04-13 23:10:22

#	User	Length	Language	Date
1	Marcus Blücher	1021	C	2020-04-24 14:19:11
2	Ioannis Br	1089	C	2020-04-25 12:10:42
3	Anton Siderud	1188	C	2020-04-24 14:11:24
4	Mirel Cosulschi	1317	C	2025-06-09 11:05:15
5	Adam Evans	1922	C	2016-10-22 20:27:13
6	Bergur Snorrason	2328	C	2022-02-20 18:04:35
7	Ivan Petrov	2963	C	2019-07-23 09:09:03

#	User	Length	Language	Date
1	Jens Erik	1699	C#	2025-11-18 22:30:46
2	Simon Thillemann Nielsen	1699	C#	2025-11-18 22:52:58
3	Gurra Bern	5003	C#	2022-08-09 19:27:09
4	Andrzej Krajniak	10074	C#	2017-11-08 20:33:58

#	User	Length	Language	Date
1	Ragur Krishnan	633	C++	2018-07-23 23:43:58
2	Artemis Ngoh	692	C++	2023-10-14 20:50:15
3	Johan Wind	838	C++	2015-11-26 13:12:41
4	Yunpeng Tang	851	C++	2017-01-14 07:14:14
5	Adam Fazekas	862	C++	2015-11-21 21:32:43
6	Wen Li Looi	865	C++	2015-11-17 05:42:06
7	Hua Fan Cai	877	C++	2016-03-02 02:04:53
8	Asma Omar	886	C++	2021-03-26 16:11:56
9	Ian DeHaan	938	C++	2021-03-26 16:00:35
10	David Venhoek	940	C++	2016-03-21 13:41:43

#	User	Length	Language	Date
1	Norbert Voelker	3688	Go	2022-10-18 12:45:24

#	User	Length	Language	Date
1	Brent Yorgey	3078	Haskell	2021-01-03 20:36:55

#	User	Length	Language	Date
1	Hidden user	1187	Java	2022-03-21 05:32:44
2	Doug Goodman	1203	Java	2017-08-07 19:15:37
3	Fred Zhang	1214	Java	2016-11-04 14:18:27
4	Zhen Lin	1359	Java	2016-10-22 19:24:35
5	Taylor Wong	1359	Java	2022-10-30 21:48:37
6	John Barczynski	1405	Java	2016-10-22 20:46:40
7	Mitch Price	1409	Java	2017-09-27 04:38:54
8	Darrin Wiley	1440	Java	2016-10-22 17:30:40
9	Quan Le	1452	Java	2024-07-18 08:45:29
10	Amon Al-khatib	1552	Java	2017-10-21 20:00:25

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	796	JavaScript (SpiderMonkey)	2024-10-20 00:23:08

#	User	Length	Language	Date
1	Jacob Huebner	1148	Kotlin	2021-04-29 07:55:08

#	User	Length	Language	Date
1	Andriy Zyevakov	1543	Prolog	2024-04-10 07:23:57

#	User	Length	Language	Date
1	Kevin Li	708	Python 2	2016-10-22 18:51:02
2	Logan Su	731	Python 2	2016-10-22 18:53:47
3	Godmar Back	828	Python 2	2016-10-23 02:05:09
4	Hermon Mulat	840	Python 2	2018-10-13 23:59:00
5	Renato Ferreira	1000	Python 2	2016-10-22 20:41:45
6	Michael Laszlo	1283	Python 2	2016-12-28 02:57:57
7	Jeff Robertson	1419	Python 2	2017-10-26 00:24:35

#	User	Length	Language	Date
1	Lawry Sorenson	286	Python 3	2023-10-05 21:57:57
2	Ahmed Chamseddine	419	Python 3	2023-09-11 13:36:06
3	Isaac Erdman	512	Python 3	2024-11-01 19:36:07
4	Todd Applegate	599	Python 3	2025-11-07 01:33:07
5	Nikil Roashan Selvam	622	Python 3	2022-02-24 04:19:54
6	Kelly Dance	676	Python 3	2023-01-25 20:35:07
7	Nicholas Russell Saerang	712	Python 3	2024-02-17 12:57:05
8	Russell	712	Python 3	2025-09-21 14:15:58
9	Shubham Tandon	722	Python 3	2022-04-20 22:24:52
10	Tylan McKinney	725	Python 3	2021-03-05 21:34:26

#	User	Length	Language	Date
1	Thomas Feld	230	Ruby	2023-10-09 11:36:24

#	User	Length	Language	Date
1	Viktor Sandström	3182	Rust	2023-04-13 23:10:22
2	Akemi Izuko	3428	Rust	2022-10-29 00:33:32
3	Aaron Lengyel	5968	Rust	2022-11-12 00:42:39

Solution running time distribution