Problem A
Free Weights — Problem Statistics

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Submissions	7600
Accepted submissions	2087
Submission ratio	27.46%
Authors	1551
Full solves [?]	1249
Full solve Ratio	80.53%

#	User	Runtime	Language	Date
1	Chenzhang Hu	1.02 s	Bash	2024-04-16 17:39:52

#	User	Runtime	Language	Date
1	Kenneth Langedal	0.02 s	C	2022-11-16 16:02:40
2	Yasser Ouazran	0.15 s	C	2025-11-10 05:20:55
3	Nicholas King	0.15 s	C	2025-11-10 22:32:24
4	Emmanuel Beyene	0.17 s	C	2025-11-10 04:43:01
5	Leo Yaman Tekesin	0.17 s	C	2025-11-12 01:33:53
6	John Paul Hanson	0.19 s	C	2019-02-20 05:27:40
7	Jesper Öqvist	0.21 s	C	2018-05-11 19:49:19
8	Markus Mathiasen	0.22 s	C	2022-06-02 13:18:07
9	Matthew Davis	0.24 s	C	2025-11-09 01:05:31
10	Agustin Feldberg	0.24 s	C	2025-11-09 23:23:37

#	User	Runtime	Language	Date
1	Lukas P.	0.87 s	C#	2026-03-05 20:21:34
2	Raul Kooter	0.95 s	C#	2016-11-26 22:12:34
3	Steven Heinen	1.69 s	C#	2024-09-05 18:25:57
4	Sturle Elvestad	5.84 s	C#	2019-02-17 23:51:49

#	User	Runtime	Language	Date
1	Kenneth Langedal	0.03 s	C++	2019-03-09 02:51:05
2	Constantijn Dekker	0.05 s	C++	2021-02-13 15:45:13
3	Ethan Dickey	0.05 s	C++	2022-02-18 08:12:18
4	Peter Jin	0.05 s	C++	2023-03-04 18:42:29
5	Steven Gay	0.16 s	C++	2021-09-26 21:18:58
6	Pasapol Saowakon	0.17 s	C++	2017-06-17 06:17:23
7	Markus Løland	0.18 s	C++	2019-02-01 17:45:57
8	Jim Zheng	0.18 s	C++	2020-01-22 17:30:11
9	Tim Gellersen	0.18 s	C++	2020-04-24 16:53:05
10	Markus Mathiasen	0.18 s	C++	2022-06-02 13:20:10

#	User	Runtime	Language	Date
1	Harald Andersson	0.64 s	Go	2017-06-12 08:45:27
2	Hidden user	2.95 s	Go	2018-02-18 15:10:54

#	User	Runtime	Language	Date
1	Lars Corbijn	5.13 s	Haskell	2018-10-27 19:37:39

#	User	Runtime	Language	Date
1	John Rabaey	0.19 s	Java	2019-02-22 04:24:26
2	David Brink	0.21 s	Java	2017-02-05 16:16:24
3	Godmar Back	0.31 s	Java	2020-10-13 06:16:49
4	Dominic Danborn	0.33 s	Java	2022-02-24 20:23:10
5	Sean Zhang	0.40 s	Java	2022-02-24 23:43:34
6	Payas	0.44 s	Java	2022-02-21 23:44:16
7	Jimmy Dinh	0.44 s	Java	2024-09-18 03:28:47
8	Bjørn Dons	0.57 s	Java	2019-05-04 20:16:53
9	Herman Appelgren	0.63 s	Java	2018-07-20 22:11:40
10	Joost Visser	0.65 s	Java	2017-02-12 15:05:59

#	User	Runtime	Language	Date
1	Christopher Walther	0.66 s	JavaScript (SpiderMonkey)	2021-05-01 00:52:42
2	Christian Pilegaard Cederquist	1.02 s	JavaScript (SpiderMonkey)	2023-07-03 19:34:01
3	Bjørn Chr. Soltvedt	6.44 s	JavaScript (SpiderMonkey)	2022-06-15 09:32:01

#	User	Runtime	Language	Date
1	Adam Rankin	1.88 s	Kotlin	2023-09-28 02:07:37
2	Benjamin Ye	1.89 s	Kotlin	2023-01-30 18:25:08
3	Andreas Wassum	2.15 s	Kotlin	2019-04-18 13:02:46

#	User	Runtime	Language	Date
1	Ishpreet Singh Bhasin	3.70 s	OCaml	2026-01-10 12:38:54

#	User	Runtime	Language	Date
1	Paul Devlin	0.36 s	Python 2	2019-02-22 04:39:51
2	Øyvind Haarberg	0.72 s	Python 2	2017-11-01 18:02:52
3	Stefana Chiriac	0.93 s	Python 2	2025-10-13 12:06:57
4	Simon Rieß	1.17 s	Python 2	2019-08-25 12:09:09
5	Simon Rainer	1.24 s	Python 2	2016-12-02 10:07:37
6	Iqrar Agalosi Nureyza	1.28 s	Python 2	2018-11-19 10:42:35
7	Josenildo Silva	1.29 s	Python 2	2018-08-07 20:11:40
8	Maj Stenmark	1.32 s	Python 2	2018-05-12 17:15:43
9	Andreas Björklund	1.33 s	Python 2	2018-11-29 20:44:13

#	User	Runtime	Language	Date
1	AlexL	0.39 s	Python 3	2025-05-11 01:44:14
2	Yang Tang	0.42 s	Python 3	2025-05-10 07:21:48
3	Bethan Payne	0.42 s	Python 3	2025-11-14 18:18:48
4	Hrant Hovhannisyan	0.43 s	Python 3	2025-10-14 08:12:54
5	John Stanwick	0.46 s	Python 3	2022-02-23 21:35:15
6	Sanjay Vijay	0.46 s	Python 3	2025-10-19 02:08:45
7	Hidden user	0.48 s	Python 3	2021-10-06 22:30:02
8	Constantijn Dekker	0.49 s	Python 3	2021-02-13 13:13:51
9	Christoph Dürr	0.49 s	Python 3	2021-11-23 21:19:49
10	Christoph Dürr	0.50 s	Python 3	2021-11-25 08:57:28

#	User	Runtime	Language	Date
1	Ivy Wang	0.83 s	Ruby	2023-01-29 07:05:13
2	Frederik Petersen	2.54 s	Ruby	2025-09-05 17:02:50
3	Thomas Feld	4.86 s	Ruby	2023-08-08 08:56:06

#	User	Runtime	Language	Date
1	Stian Soltvedt	0.09 s	Rust	2019-02-05 13:08:43
2	Ole Vik Lysne	0.16 s	Rust	2024-02-02 17:43:47
3	Tuncay Alarcin	0.29 s	Rust	2023-11-12 15:58:11
4	Daniel Anker Hermansen	0.30 s	Rust	2022-11-26 23:08:34
5	Jakob Rødal Skaar	0.30 s	Rust	2024-01-31 19:22:05
6	Niklas Sandén	0.34 s	Rust	2022-11-08 14:27:39
7	Birk Tjelmeland	0.50 s	Rust	2019-01-22 17:15:35
8	Jonathan Cederlund	0.85 s	Rust	2023-05-04 18:37:19

#	User	Length	Language	Date
1	Chenzhang Hu	1610	Bash	2024-04-16 17:39:52

#	User	Length	Language	Date
1	Markus Mathiasen	382	C	2022-06-02 13:18:07
2	John Paul Hanson	482	C	2019-02-20 05:27:40
3	pengin	771	C	2021-06-08 13:09:30
4	Matias Lahti	840	C	2016-11-23 21:53:16
5	Samuel Vitor Schmidt	849	C	2025-11-09 03:27:18
6	Øyvind Haarberg	852	C	2019-01-30 17:14:47
7	Hidden user	880	C	2025-11-30 00:24:57
8	Dave Deneus	976	C	2025-11-28 23:09:27
9	Austin Vodrazka	1008	C	2025-10-30 01:13:17
10	Ivan Petrov	1014	C	2017-11-16 14:54:45

#	User	Length	Language	Date
1	Lukas P.	1116	C#	2026-03-05 20:21:34
2	Raul Kooter	1897	C#	2016-11-26 22:12:34
3	Sturle Elvestad	2605	C#	2019-02-17 23:51:49
4	Steven Heinen	12488	C#	2024-09-05 18:25:57

#	User	Length	Language	Date
1	Kjetil Berg	223	C++	2024-02-21 20:10:07
2	Markus Mathiasen	385	C++	2022-06-02 12:57:47
3	Ciprian Stirbu	494	C++	2016-11-21 01:05:56
4	Marek Balaz	520	C++	2017-07-27 22:14:49
5	Giovanni Gaio	527	C++	2023-08-21 18:04:41
6	Andreas Grigorjew	551	C++	2019-01-17 03:34:17
7	Hyunjun Lee	551	C++	2022-12-08 09:50:11
8	Donald Dong	596	C++	2018-08-16 18:42:02
9	Oscar Peulicke	604	C++	2019-11-12 20:21:11
10	William Gan	606	C++	2018-12-09 06:26:08

#	User	Length	Language	Date
1	Hidden user	1533	Go	2018-02-18 15:10:54
2	Harald Andersson	1912	Go	2017-06-12 08:45:27

#	User	Length	Language	Date
1	Lars Corbijn	595	Haskell	2018-10-27 19:37:39

#	User	Length	Language	Date
1	Doug Goodman	654	Java	2017-12-02 15:08:02
2	Kurtis Van Gent	840	Java	2017-04-08 20:44:53
3	palmatrees	986	Java	2020-11-30 16:39:28
4	Alyssa Palmares	986	Java	2020-11-30 16:42:18
5	John Rabaey	1018	Java	2019-02-20 04:06:14
6	Man Ting Wong	1021	Java	2018-08-01 08:30:37
7	Yuxin Sun	1109	Java	2017-10-25 01:10:23
8	Bohdan Vakhitov	1109	Java	2018-10-21 21:31:39
9	Jiru Xu	1114	Java	2017-11-07 02:01:17
10	Luhao Qi	1123	Java	2023-11-13 08:39:33

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	769	JavaScript (SpiderMonkey)	2023-07-03 19:34:01
2	Bjørn Chr. Soltvedt	1303	JavaScript (SpiderMonkey)	2022-06-15 09:46:46
3	Christopher Walther	2224	JavaScript (SpiderMonkey)	2021-05-01 00:52:42

#	User	Length	Language	Date
1	Benjamin Ye	483	Kotlin	2023-01-30 18:25:08
2	Adam Rankin	1362	Kotlin	2023-09-28 02:07:37
3	Andreas Wassum	2414	Kotlin	2019-04-18 13:02:46

#	User	Length	Language	Date
1	Ishpreet Singh Bhasin	4354	OCaml	2026-01-10 13:02:31

#	User	Length	Language	Date
1	Simon Rainer	375	Python 2	2016-12-02 14:13:57
2	Simon Rieß	375	Python 2	2019-08-25 12:09:09
3	Iqrar Agalosi Nureyza	394	Python 2	2018-11-19 10:42:35
4	Josenildo Silva	452	Python 2	2018-08-07 20:11:40
5	Andreas Björklund	575	Python 2	2018-11-29 20:44:13
6	Stefana Chiriac	902	Python 2	2025-10-13 12:06:57
7	Øyvind Haarberg	906	Python 2	2017-11-01 18:02:52
8	Maj Stenmark	930	Python 2	2018-05-12 17:15:43
9	Paul Devlin	1408	Python 2	2019-02-22 04:39:51

#	User	Length	Language	Date
1	Anshuman Dash	170	Python 3	2023-01-31 03:34:21
2	Magnus Hokland Hegdahl	238	Python 3	2023-02-13 05:30:16
3	Simon Rainer	266	Python 3	2016-12-02 14:27:45
4	Yang Tang	271	Python 3	2025-05-10 07:21:48
5	Yong Mao	290	Python 3	2023-09-13 17:54:05
6	Alvaro Rodriguez	401	Python 3	2025-01-11 17:03:56
7	Noam Cohen	416	Python 3	2021-02-13 17:04:48
8	Adam Polak	439	Python 3	2025-10-08 20:29:55
9	Mees de Vries	449	Python 3	2020-02-11 14:11:21
10	Daniel Lokshtanov	458	Python 3	2023-02-03 04:21:52

#	User	Length	Language	Date
1	Thomas Feld	112	Ruby	2023-08-08 08:54:53
2	Frederik Petersen	497	Ruby	2025-09-05 17:02:50
3	Ivy Wang	534	Ruby	2023-01-30 10:14:35

#	User	Length	Language	Date
1	Birk Tjelmeland	1074	Rust	2019-01-22 15:57:19
2	Ole Vik Lysne	1243	Rust	2024-02-03 13:50:46
3	Jakob Rødal Skaar	1916	Rust	2024-01-31 19:22:05
4	Tuncay Alarcin	2039	Rust	2023-11-12 15:58:11
5	Niklas Sandén	3427	Rust	2022-11-08 14:17:24
6	Jonathan Cederlund	3937	Rust	2023-05-04 18:37:19
7	Stian Soltvedt	4217	Rust	2019-02-05 13:08:43
8	Daniel Anker Hermansen	11692	Rust	2022-11-26 23:08:34

Solution running time distribution