Problem A
Getting Gold — Problem Statistics

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Submissions	7268
Accepted submissions	3218
Submission ratio	44.28%
Authors	2642
Full solves [?]	2420
Full solve Ratio	91.60%

#	User	Runtime	Language	Date
1	Bas te Kolste	0.02 s	C#	2015-07-28 13:43:18
2	Udgin Pyl	0.02 s	C#	2015-09-24 21:17:18
3	Eduardo Alejandro Mulet Salazar	0.02 s	C#	2017-02-25 07:10:06
4	Andrzej Krajniak	0.02 s	C#	2017-07-25 18:30:24
5	Marek	0.02 s	C#	2017-07-25 18:43:14
6	Fredrik Absalonsen	0.02 s	C#	2018-02-05 17:36:31
7	Jayant Notani	0.02 s	C#	2020-03-27 23:42:30
8	Eric O'Donoghue	0.02 s	C#	2021-03-04 18:17:42
9	Matthew Hooper	0.02 s	C#	2021-03-04 22:57:54
10	Carter Morgan	0.02 s	C#	2021-03-05 06:13:15

#	User	Runtime	Language	Date
1	Ari Páll Agnarsson	0.01 s	Common Lisp	2021-03-04 04:55:49
2	David Cawthon	0.18 s	Common Lisp	2020-07-04 18:23:54

#	User	Runtime	Language	Date
1	Matthew Hooper	0.04 s	F#	2021-03-09 20:20:54
2	Jacob Harris Cryer Kragh	0.04 s	F#	2022-11-27 15:12:50
3	Gustav Kristensen	0.26 s	F#	2024-03-22 13:11:03

#	User	Runtime	Language	Date
1	Ola Dahl	0.02 s	Go	2022-11-11 08:28:08
2	Norbert Voelker	0.08 s	Go	2021-05-14 19:48:17
3	Krzysztof Gibuła	0.08 s	Go	2021-07-03 16:40:18
4	Vilhelm Melkstam	0.08 s	Go	2022-02-22 20:31:03
5	Dick Appel	0.08 s	Go	2022-05-20 22:08:15

#	User	Runtime	Language	Date
1	Morten Lohne	0.00 s	Haskell	2018-01-23 01:40:52
2	Hidden user	0.06 s	Haskell	2019-10-30 18:30:16
3	Chan Ken	0.06 s	Haskell	2021-08-20 21:58:41

#	User	Runtime	Language	Date
1	Elaica Dela Cruz	0.04 s	Java	2024-09-10 11:28:35
2	Johan von Axelson	0.04 s	Java	2025-02-24 14:01:55
3	Mitchel Carson	0.04 s	Java	2025-05-06 20:08:30
4	Jack Lucas	0.04 s	Java	2025-09-23 17:13:22
5	Robin Andersson	0.05 s	Java	2016-02-17 18:34:06
6	Amad Askor	0.05 s	Java	2016-08-06 23:54:22
7	Micah Stairs	0.05 s	Java	2016-09-20 22:47:31
8	Othmane Bentaleb	0.05 s	Java	2016-10-02 17:55:30
9	Samuel Klingström	0.05 s	Java	2017-05-07 02:38:46
10	Martin Jakobsson	0.05 s	Java	2017-10-06 08:57:17

#	User	Runtime	Language	Date
1	Jiaxun Wei	0.07 s	JavaScript (Node.js)	2024-12-02 17:33:20
2	Thomas Wingsternes	0.11 s	JavaScript (Node.js)	2022-11-09 15:39:21

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-09-06 13:41:18
2	Hidden user	0.02 s	JavaScript (SpiderMonkey)	2014-10-20 14:17:09
3	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-02-09 00:11:09
4	Peter Kedemo	0.33 s	JavaScript (SpiderMonkey)	2016-01-09 18:43:01

#	User	Runtime	Language	Date
1	Timothy Gaede	0.68 s	Julia	2025-06-07 09:16:59

#	User	Runtime	Language	Date
1	Adam Rankin	0.20 s	Kotlin	2023-05-08 02:02:11
2	Neil Harmon	0.24 s	Kotlin	2019-07-24 12:50:55
3	Emil Göransson	0.26 s	Kotlin	2023-06-12 16:06:49
4	Chris Johnson	0.28 s	Kotlin	2025-04-05 17:39:26

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-10-12 16:22:27

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2018-04-27 18:28:19

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.10 s	Prolog	2024-02-07 06:49:40

#	User	Runtime	Language	Date
1	Noah Ó Donnaile	0.03 s	Python 2	2016-11-24 00:20:44
2	Abolfazl Sherafat	0.03 s	Python 2	2018-03-25 00:53:34
3	Erik Odenman	0.04 s	Python 2	2015-05-15 04:50:00
4	Tommy Tang	0.04 s	Python 2	2017-02-11 21:08:48
5	Nathan Villanueva	0.04 s	Python 2	2017-04-08 00:22:14
6	Juliang Li	0.04 s	Python 2	2018-03-23 21:36:25
7	Steven Tran	0.04 s	Python 2	2018-03-29 13:06:37
8	Yupeng Gu	0.04 s	Python 2	2018-06-27 02:53:50
9	Jesper Öqvist	0.04 s	Python 2	2018-10-26 17:49:37
10	Max Holmberg	0.04 s	Python 2	2018-11-12 11:44:53

#	User	Runtime	Language	Date
1	Patrik Andersson	0.02 s	Python 3	2016-02-19 19:54:13
2	Torfinn Tyvold Skarvatun	0.02 s	Python 3	2016-04-28 12:23:53
3	Unnar Freyr Erlendsson	0.02 s	Python 3	2016-05-06 15:53:36
4	Sigurjón Freyr Viktorsson	0.02 s	Python 3	2016-05-06 17:09:14
5	Arnar Bjarni Arnarson	0.02 s	Python 3	2016-05-06 17:09:31
6	Susan Fox	0.02 s	Python 3	2016-09-28 04:01:12
7	Trung Nguyen	0.02 s	Python 3	2016-10-01 20:29:30
8	Sarah Pujol	0.02 s	Python 3	2016-10-13 02:49:18
9	Joel De La Cruz	0.02 s	Python 3	2017-02-11 22:23:55
10	Yunhua Zhao	0.02 s	Python 3	2017-07-01 12:03:28

#	User	Runtime	Language	Date
1	Zohar Malamant	0.05 s	Ruby	2018-02-18 22:37:31
2	Hidden user	0.05 s	Ruby	2019-10-09 22:39:54
3	Yusuke Ichiki	0.07 s	Ruby	2022-05-20 07:16:12

#	User	Length	Language	Date
1	Jordan Perry	526	C	2023-02-06 18:37:54
2	Haobo Jiang	842	C	2015-10-16 14:52:25
3	Ivan Petrov	918	C	2019-06-26 14:38:09
4	Ayoub Chegraoui	920	C	2017-12-30 19:15:58
5	Maximilian Larsson	973	C	2025-02-11 00:12:56
6	Mikael K Eriksson	1034	C	2021-03-22 13:12:34
7	Naveen Kumar S	1105	C	2025-04-22 17:08:27
8	Komatsuna	1122	C	2022-05-24 14:32:05
9	Benjamin Yan	1197	C	2022-02-07 14:46:49
10	David Wüstenhagen	1221	C	2020-03-12 20:46:57

#	User	Length	Language	Date
1	traxex	874	C#	2024-05-06 16:02:51
2	Aaron Mayer	1822	C#	2021-03-15 05:56:15
3	Jack Machara	1825	C#	2021-03-10 23:43:27
4	Brandon Walton	2022	C#	2021-03-13 01:19:39
5	Jayant Notani	2103	C#	2020-03-27 23:42:30
6	Fredrik Absalonsen	2110	C#	2018-02-05 17:36:31
7	Peter Cederqvist	2188	C#	2025-08-25 17:46:41
8	Eric O'Donoghue	2195	C#	2021-03-04 18:17:42
9	Matthew Hooper	2202	C#	2021-03-04 19:33:59
10	Bas te Kolste	2275	C#	2015-07-28 13:43:18

#	User	Length	Language	Date
1	Herman Karlsson	531	C++	2015-09-13 13:35:33
2	Claire Duong	609	C++	2018-03-29 00:33:30
3	Liu Yang	612	C++	2017-02-12 11:15:40
4	Hidden user	619	C++	2024-08-31 13:03:39
5	Hidden user	630	C++	2024-02-17 21:57:11
6	Johan Wind	641	C++	2018-04-10 18:35:25
7	Roger Chen	644	C++	2022-10-24 16:53:10
8	Almaz Tukenov	667	C++	2017-09-16 18:17:57
9	Christopher Lin	694	C++	2020-08-25 02:02:03
10	Hidden user	705	C++	2025-01-26 14:35:34

#	User	Length	Language	Date
1	David Cawthon	2637	Common Lisp	2020-07-04 18:23:54
2	Ari Páll Agnarsson	6231	Common Lisp	2021-03-04 04:55:49

#	User	Length	Language	Date
1	Matthew Hooper	1170	F#	2021-03-11 05:37:54
2	Jacob Harris Cryer Kragh	2132	F#	2022-11-27 15:12:50
3	Gustav Kristensen	4390	F#	2024-03-22 13:11:03

#	User	Length	Language	Date
1	Krzysztof Gibuła	1212	Go	2021-07-03 16:46:13
2	Vilhelm Melkstam	1395	Go	2022-02-22 20:41:56
3	Dick Appel	1450	Go	2022-05-20 22:08:15
4	Norbert Voelker	1458	Go	2021-05-14 19:48:17
5	Ola Dahl	4283	Go	2022-11-11 08:28:08

#	User	Length	Language	Date
1	Chan Ken	3070	Haskell	2021-08-20 21:58:41
2	Morten Lohne	3805	Haskell	2018-01-23 01:44:16
3	Hidden user	16381	Haskell	2019-10-30 18:30:16

#	User	Length	Language	Date
1	Doug Goodman	971	Java	2017-12-08 18:18:42
2	Nathaniel Lahn	1074	Java	2016-12-31 04:04:48
3	Micah Stairs	1112	Java	2016-09-20 22:47:31
4	Gregory Sinclair	1151	Java	2022-07-25 01:56:49
5	Anh Pham	1248	Java	2024-04-26 03:07:24
6	Xin Chen	1279	Java	2022-01-20 11:10:03
7	Simon Xue	1301	Java	2015-11-14 21:43:33
8	Alvin Tan	1320	Java	2021-04-13 08:46:28
9	Patrik Hörnqvist	1337	Java	2014-11-23 02:00:28
10	Kiên Nguyễn Tiến Trung	1362	Java	2017-02-15 12:28:07

#	User	Length	Language	Date
1	Thomas Wingsternes	1521	JavaScript (Node.js)	2022-11-09 15:39:21
2	Jiaxun Wei	1936	JavaScript (Node.js)	2024-12-02 17:33:20

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	749	JavaScript (SpiderMonkey)	2016-09-06 13:41:18
2	Christian Pilegaard Cederquist	914	JavaScript (SpiderMonkey)	2023-02-09 00:11:09
3	Peter Kedemo	1218	JavaScript (SpiderMonkey)	2016-01-09 18:43:01
4	Hidden user	1345	JavaScript (SpiderMonkey)	2014-10-20 14:17:09

#	User	Length	Language	Date
1	Timothy Gaede	1552	Julia	2025-06-07 09:16:59

#	User	Length	Language	Date
1	Chris Johnson	1108	Kotlin	2025-04-05 17:39:26
2	Adam Rankin	1714	Kotlin	2023-05-08 02:02:11
3	Neil Harmon	2288	Kotlin	2019-07-24 12:50:55
4	Emil Göransson	2522	Kotlin	2023-06-12 16:07:58

#	User	Length	Language	Date
1	Ingemar Ragnemalm	4009	Pascal	2017-10-12 16:22:27

#	User	Length	Language	Date
1	Susanne Ragnemalm	1651	PHP	2018-04-27 18:28:19

#	User	Length	Language	Date
1	Andriy Zyevakov	2094	Prolog	2024-02-07 06:49:40

#	User	Length	Language	Date
1	Thomas Feld	425	Python 2	2019-09-25 15:56:30
2	Erik Odenman	618	Python 2	2015-05-15 04:50:00
3	Noah Ó Donnaile	646	Python 2	2016-11-24 00:20:44
4	Yupeng Gu	668	Python 2	2018-06-27 02:53:50
5	Abolfazl Sherafat	682	Python 2	2018-03-25 00:53:34
6	Justin Su	705	Python 2	2018-11-13 02:16:51
7	Lars Åström	710	Python 2	2019-10-07 09:28:29
8	Andreas Björklund	711	Python 2	2019-03-29 19:41:09
9	Jasper Lu	764	Python 2	2017-06-29 01:36:34
10	Nathan Villanueva	786	Python 2	2017-04-08 00:22:14

#	User	Length	Language	Date
1	Jorke de Vlas	213	Python 3	2024-03-11 15:43:50
2	Simon Hellsten	222	Python 3	2023-07-09 20:36:13
3	Gustav Elmqvist	245	Python 3	2023-02-18 14:06:25
4	Rachel Krohn	311	Python 3	2025-09-15 22:51:15
5	Morgan Nordberg	401	Python 3	2025-02-25 09:27:55
6	Yong Mao	455	Python 3	2023-07-22 03:51:18
7	Grayden Price	476	Python 3	2020-10-24 04:20:30
8	Artur Khuziakhmetov	479	Python 3	2022-07-19 11:57:00
9	Thibault Raffaillac	535	Python 3	2021-02-26 16:02:33
10	Clement Oh	539	Python 3	2023-11-04 06:48:26

#	User	Length	Language	Date
1	Hidden user	705	Ruby	2019-10-09 22:39:54
2	Zohar Malamant	954	Ruby	2018-02-18 22:37:31
3	Yusuke Ichiki	1194	Ruby	2022-05-20 07:16:12

#	User	Length	Language	Date
1	Vincent Lagerros	1256	Rust	2025-01-26 18:20:36
2	Bas Dirks	1554	Rust	2022-02-21 12:33:54
3	Rasmus Andersson	1614	Rust	2025-02-23 12:15:30
4	Schuyler Tay	1739	Rust	2020-06-24 08:34:01
5	Aidan Taylor	2131	Rust	2021-03-11 05:18:55
6	Andrew Lee	2462	Rust	2021-03-12 07:49:20
7	Joe Blower	2916	Rust	2025-09-09 03:53:56
8	Eric Riddle	2944	Rust	2025-09-21 23:49:16
9	藤原潮人	2983	Rust	2023-07-06 10:28:50
10	Abdulsalam Al-Gaaod	3301	Rust	2025-09-10 15:54:04

Solution running time distribution