Problem A
Hay Points — Problem Statistics

Back to problem description

Submissions	6631
Accepted submissions	3293
Submission ratio	49.66%
Authors	2752
Full solves [?]	2507
Full solve Ratio	91.10%

#	User	Runtime	Language	Date
1	Danny Robinson	0.08 s	Bash	2023-09-26 01:24:27

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	C	2016-05-06 02:37:21
2	Marcus Larsson	0.03 s	C	2014-06-29 19:40:49
3	Merih Bora Poçan	0.03 s	C	2026-01-16 02:08:49
4	Hidden user	0.04 s	C	2017-05-28 22:56:25
5	Erik Hedlund	0.04 s	C	2021-02-13 14:57:03
6	Duane Currie	0.05 s	C	2019-03-28 01:21:21
7	Sambit Palit	0.05 s	C	2020-09-18 00:24:33
8	Cuong Giap Minh	0.06 s	C	2016-04-26 09:17:02
9	Jessica Jimantoro	0.06 s	C	2019-09-30 18:17:37
10	Dylan Strickley	0.06 s	C	2022-11-16 23:55:29

#	User	Runtime	Language	Date
1	Steven Heinen	0.08 s	C#	2023-08-25 14:04:02
2	Simon Mathiasen	0.08 s	C#	2025-12-12 22:47:43
3	Przemysław Curzytek	0.09 s	C#	2016-12-18 20:30:26
4	Duelene Olson	0.09 s	C#	2017-04-11 01:31:19
5	Rasmus Brants	0.09 s	C#	2017-04-25 10:45:26
6	Andrzej Krajniak	0.09 s	C#	2017-11-14 17:04:11
7	Marek	0.09 s	C#	2017-11-14 17:26:08
8	Diego Rico Reyes	0.09 s	C#	2023-11-27 01:17:53
9	Fredrik Jacobsson	0.09 s	C#	2024-01-29 00:02:03
10	Oliver Laursen	0.09 s	C#	2025-01-25 21:13:28

#	User	Runtime	Language	Date
1	Martin Stensgård	0.01 s	C++	2018-04-28 18:02:00
2	Daniel Schemmel	0.02 s	C++	2016-10-02 03:27:50
3	Jonathan Hallström	0.02 s	C++	2022-09-18 12:20:37
4	Md. Sohel Rana	0.02 s	C++	2025-11-08 13:07:46
5	Grae Yeandle	0.03 s	C++	2016-12-15 17:36:43
6	Oskar Nehlin	0.03 s	C++	2017-08-01 16:37:09
7	Jesper Mjörnman	0.03 s	C++	2019-09-10 11:57:48
8	Jesper Mjörnman	0.03 s	C++	2019-09-14 09:29:15
9	Alexander Henne	0.03 s	C++	2019-10-10 21:39:10
10	Agis Daniels	0.03 s	C++	2021-12-11 17:53:48

#	User	Runtime	Language	Date
1	Simon Echers	0.18 s	F#	2022-01-18 01:51:04
2	Jacob Harris Cryer Kragh	0.23 s	F#	2022-10-08 13:00:17

#	User	Runtime	Language	Date
1	Aditya Tresnobudi	0.03 s	Go	2026-03-17 05:55:40
2	Thomas	0.04 s	Go	2024-01-19 02:35:19
3	Norbert Voelker	0.06 s	Go	2021-05-02 18:15:49
4	Krzysztof Gibuła	0.07 s	Go	2019-01-15 22:46:02
5	Erik Rairden	0.08 s	Go	2020-09-30 06:44:16
6	Nicolai Hellesnes	0.10 s	Go	2023-06-17 14:53:23
7	Asmus Tørsleff	0.12 s	Go	2021-08-31 22:20:21
8	Johan Fogelström	0.15 s	Go	2014-12-21 22:12:36
9	Việt Hà Nguyễn	0.15 s	Go	2016-06-24 15:49:03
10	Anthony Alves	0.15 s	Go	2017-01-28 21:59:50

#	User	Runtime	Language	Date
1	Tim Put	0.05 s	Haskell	2021-04-20 05:28:42
2	Christian Leipe	0.10 s	Haskell	2022-01-10 20:37:30
3	Birk Tjelmeland	0.13 s	Haskell	2018-01-01 22:47:40
4	Vladislav Utkin	0.13 s	Haskell	2024-11-08 13:45:37
5	Steinar Simonnes	0.14 s	Haskell	2024-02-12 11:54:27
6	Chan Ken	0.38 s	Haskell	2021-08-16 16:40:32
7	Hidden user	0.39 s	Haskell	2015-01-19 12:21:21
8	Wilfried van Asten	0.39 s	Haskell	2015-12-20 09:58:09
9	Aurélien Pepin	0.39 s	Haskell	2019-09-03 16:03:21
10	Hidden user	0.39 s	Haskell	2019-09-04 11:03:35

#	User	Runtime	Language	Date
1	William Fiset	0.19 s	Java	2016-07-05 05:34:04
2	Samuel Klingström	0.19 s	Java	2017-05-11 18:16:10
3	Dat Vo Nguyen Tien	0.19 s	Java	2022-01-20 12:29:37
4	Ahmad Barhamje	0.20 s	Java	2018-11-01 01:40:23
5	Simon Klein	0.21 s	Java	2011-09-24 16:32:47
6	Akhil Chaudhary	0.24 s	Java	2019-11-21 10:24:13
7	Fredrik Atmer	0.25 s	Java	2007-09-21 14:39:34
8	Staffan Rydström	0.25 s	Java	2011-09-24 11:52:18
9	Axel Lewenhaupt	0.25 s	Java	2013-05-16 08:04:07
10	Kai Widell Niigata	0.25 s	Java	2014-05-12 21:37:45

#	User	Runtime	Language	Date
1	Sander Hellesø	0.14 s	JavaScript (Node.js)	2019-04-14 07:12:15
2	Tuncay Alarcin	0.16 s	JavaScript (Node.js)	2023-10-29 17:35:57
3	Samuel Högfeldt	0.19 s	JavaScript (Node.js)	2022-08-04 06:34:13
4	Ronit Mishra	0.19 s	JavaScript (Node.js)	2025-01-26 09:52:57
5	Sönke Schümann	0.50 s	JavaScript (Node.js)	2020-11-02 12:53:16
6	Christopher Walther	0.50 s	JavaScript (Node.js)	2021-04-16 12:46:50
7	Khin Nyunt	0.51 s	JavaScript (Node.js)	2021-11-16 16:11:22
8	Chris Wong	0.53 s	JavaScript (Node.js)	2022-01-17 18:50:39
9	Niamh Limerick	0.55 s	JavaScript (Node.js)	2022-03-18 13:45:20
10	Jeremiah Ang	0.56 s	JavaScript (Node.js)	2020-09-10 01:52:46

#	User	Runtime	Language	Date
1	Peter Kedemo	0.12 s	JavaScript (SpiderMonkey)	2016-01-01 08:04:12
2	Jimmy Gustafsson	0.13 s	JavaScript (SpiderMonkey)	2024-08-13 21:31:16
3	Bjørn Chr. Soltvedt	0.14 s	JavaScript (SpiderMonkey)	2016-03-06 14:23:39
4	Samuel Jefferis	0.14 s	JavaScript (SpiderMonkey)	2020-12-02 00:48:05
5	Christian Pilegaard Cederquist	0.14 s	JavaScript (SpiderMonkey)	2022-10-24 11:59:31
6	Zach Tschetter	0.14 s	JavaScript (SpiderMonkey)	2023-04-26 16:09:23
7	Andri Rafn	0.16 s	JavaScript (SpiderMonkey)	2018-04-24 17:53:28
8	Dipendra Ranjitkar	0.16 s	JavaScript (SpiderMonkey)	2025-01-29 09:45:47
9	Andri Andresson	0.48 s	JavaScript (SpiderMonkey)	2018-04-25 18:42:46

#	User	Runtime	Language	Date
1	Timothy Gaede	0.66 s	Julia	2024-04-16 14:27:21

#	User	Runtime	Language	Date
1	Nico Metger	0.43 s	Kotlin	2021-10-29 15:04:25
2	Jacob Huebner	0.44 s	Kotlin	2020-06-25 04:46:27
3	James WIlliams	0.64 s	Kotlin	2020-09-20 19:24:27
4	Adam Rankin	0.64 s	Kotlin	2023-05-10 20:19:31
5	Sergey Jakobsen	0.66 s	Kotlin	2021-03-25 17:40:22
6	Dayan Ruben Gonzalez	0.67 s	Kotlin	2020-09-28 15:54:13
7	Hidden user	0.71 s	Kotlin	2017-11-30 08:14:40
8	Phường Lên	0.71 s	Kotlin	2019-11-06 21:30:12
9	Troy Warmboe	0.75 s	Kotlin	2020-02-20 20:18:06
10	Neil Harmon	0.82 s	Kotlin	2019-06-18 10:30:19

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	OCaml	2024-11-02 03:23:37
2	Philip White	0.10 s	OCaml	2025-12-02 15:26:03

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.13 s	PHP	2018-05-19 00:20:46

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	Python 2	2011-09-20 08:56:47
2	Andreas Serra	0.07 s	Python 2	2013-05-11 14:46:16
3	Ingibergur Sindri Stefnisson	0.07 s	Python 2	2014-12-02 11:55:33
4	Christofer Ohlsson	0.07 s	Python 2	2015-03-27 18:59:50
5	Mayur Mohite	0.07 s	Python 2	2015-04-22 18:33:55
6	Amarveer Singh	0.07 s	Python 2	2015-06-24 09:06:51
7	Jonas Kylling	0.07 s	Python 2	2015-09-20 14:55:06
8	Lars Tveito	0.07 s	Python 2	2015-09-26 21:08:38
9	Cliodhna Harrison	0.07 s	Python 2	2017-08-17 15:14:42
10	Ciara Godwin	0.07 s	Python 2	2017-10-02 07:33:46

#	User	Runtime	Language	Date
1	Kasra Ghodsi	0.08 s	Python 3	2018-05-02 11:37:43
2	Fred Bloggs	0.08 s	Python 3	2019-03-29 11:32:26
3	Theo Coyne Morgan	0.08 s	Python 3	2019-04-07 03:20:08
4	Petr	0.08 s	Python 3	2025-07-13 20:12:58
5	Ram Basnet	0.09 s	Python 3	2017-12-08 02:41:29
6	Karthik Nayak	0.09 s	Python 3	2018-09-27 22:21:21
7	Tobias Bengtsson	0.09 s	Python 3	2018-11-03 09:14:37
8	Aldric Bek	0.09 s	Python 3	2018-12-29 18:02:03
9	Anthony Inthavong	0.09 s	Python 3	2018-12-31 04:00:26
10	Vincent Tandya	0.09 s	Python 3	2019-01-13 17:32:53

#	User	Runtime	Language	Date
1	Hidden user	0.12 s	Ruby	2019-12-15 16:39:54
2	Oleg Smelov	0.13 s	Ruby	2019-02-21 20:03:10
3	Kok Dith	0.13 s	Ruby	2021-08-25 13:53:10
4	Rosa Gutierrez	0.14 s	Ruby	2022-05-11 18:33:19
5	Ajai Nelson	0.14 s	Ruby	2023-02-04 19:09:44
6	Thomas Feld	0.14 s	Ruby	2023-02-28 13:23:34
7	Clement Oh	0.14 s	Ruby	2024-03-03 10:07:45
8	Kevin Suwala	0.18 s	Ruby	2017-01-15 14:27:42

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2024-08-09 16:07:47
2	David Rasch	0.02 s	Rust	2020-11-17 10:10:58
3	Rasmus Kaj	0.02 s	Rust	2021-02-06 13:22:18
4	Bas Dirks	0.02 s	Rust	2022-01-06 21:23:37
5	Hidden user	0.02 s	Rust	2022-10-26 03:21:08
6	Joshua Zygmunt	0.02 s	Rust	2022-11-23 00:43:43
7	Hidden user	0.02 s	Rust	2023-05-01 10:10:25
8	Nicholas Johansan	0.02 s	Rust	2023-06-18 06:59:25
9	Aleksander	0.02 s	Rust	2024-11-01 19:16:48
10	Aza Maulana Hadi	0.02 s	Rust	2025-08-03 17:03:11

#	User	Length	Language	Date
1	Danny Robinson	78	Bash	2023-09-26 01:24:27

#	User	Length	Language	Date
1	Mirel Cosulschi	953	C	2025-04-22 12:27:05
2	Calvin	1248	C	2026-01-23 14:23:42
3	Marcus Larsson	1281	C	2014-06-29 19:48:51
4	Sashank Chundi	1361	C	2025-09-01 02:55:45
5	Erik Hedlund	1423	C	2021-02-13 20:17:30
6	Merih Bora Poçan	1455	C	2026-01-16 02:08:49
7	Julian Duniec	1533	C	2023-08-26 17:19:01
8	Sami Al Chalati	1579	C	2024-11-01 21:52:34
9	Ximun Castoreo	1583	C	2020-07-08 15:02:11
10	PhilCampbell	1642	C	2021-02-18 11:40:03

#	User	Length	Language	Date
1	Garway Mei	819	C#	2019-11-21 12:14:09
2	Simon Mathiasen	831	C#	2025-12-12 22:47:43
3	Thomas Norris	926	C#	2019-11-01 17:33:35
4	Göran Andersson	1034	C#	2022-05-19 11:17:36
5	Þorsteinn Þorvaldsson	1085	C#	2017-06-02 19:47:53
6	Eric Weiss	1090	C#	2022-09-09 16:40:35
7	Keang Hok	1095	C#	2015-08-31 04:05:07
8	Raja Sanjeev Kumar Nakka	1117	C#	2016-06-29 19:24:13
9	Rasmus Johansson	1195	C#	2022-12-02 10:11:30
10	Tonny Abrahamsson	1200	C#	2025-08-29 15:10:45

#	User	Length	Language	Date
1	Frans Meulenbroeks	226	C++	2024-10-29 12:01:13
2	Antonio Molina Lovett	257	C++	2016-08-11 07:27:09
3	Nathan Wu	323	C++	2022-08-10 23:52:02
4	Erallesa Putra Sandeni	326	C++	2016-09-20 04:39:31
5	Tran Thanh Liem	330	C++	2016-09-05 15:43:12
6	Altamish Arif	334	C++	2015-09-22 07:44:58
7	Tai Tran	339	C++	2019-02-27 12:52:11
8	黃浚瑜	339	C++	2021-07-10 07:07:37
9	Kimba SABI N'GOYE	345	C++	2021-10-06 16:42:55
10	winnie the pooh	349	C++	2021-08-30 01:34:36

#	User	Length	Language	Date
1	Simon Echers	716	F#	2022-01-18 01:51:04
2	Jacob Harris Cryer Kragh	1194	F#	2022-10-08 13:00:17

#	User	Length	Language	Date
1	James Robb	662	Go	2020-05-12 10:05:38
2	Krzysztof Gibuła	682	Go	2019-01-15 22:46:02
3	James Robb	698	Go	2020-04-29 09:53:31
4	Aditya Tresnobudi	719	Go	2026-03-17 05:55:40
5	Anthony Alves	766	Go	2017-01-28 21:59:50
6	Johan Fogelström	768	Go	2014-12-21 22:12:36
7	Việt Hà Nguyễn	804	Go	2016-06-24 15:51:17
8	Norbert Voelker	912	Go	2021-05-02 18:15:49
9	Nicolai Hellesnes	922	Go	2023-06-17 14:53:23
10	Andriy Zyevakov	964	Go	2022-12-08 15:52:38

#	User	Length	Language	Date
1	Tim Put	466	Haskell	2021-04-20 05:23:46
2	Christopher Whelan	485	Haskell	2025-01-27 20:01:29
3	Peter Matta	650	Haskell	2025-07-18 13:19:37
4	Joeri	685	Haskell	2023-06-22 09:34:42
5	Birk Tjelmeland	745	Haskell	2018-01-01 22:47:40
6	Brent Yorgey	746	Haskell	2017-11-04 01:56:41
7	Qi Ji	790	Haskell	2018-06-28 02:40:39
8	Hidden user	797	Haskell	2014-12-22 16:37:16
9	Aurélien Pepin	848	Haskell	2019-09-03 16:03:21
10	Christian Leipe	848	Haskell	2022-01-10 15:13:16

#	User	Length	Language	Date
1	Kurtis Van Gent	501	Java	2016-03-23 14:46:27
2	Matthew Miller	523	Java	2015-11-12 07:27:47
3	Jesse Moore	545	Java	2015-11-10 23:12:02
4	Catalina T Ionescu	551	Java	2016-11-11 05:52:14
5	Gabriela Llave	557	Java	2015-08-26 16:58:13
6	Stephen Royal	558	Java	2015-08-18 21:36:37
7	Drew Hoover	564	Java	2015-10-04 17:58:47
8	Mitchell Peterson	593	Java	2016-03-23 19:18:01
9	Yeo Tong	593	Java	2019-03-22 05:34:57
10	Khin Nyunt	596	Java	2017-11-08 15:29:12

#	User	Length	Language	Date
1	Jeremiah Ang	587	JavaScript (Node.js)	2020-09-10 01:52:46
2	Sönke Schümann	734	JavaScript (Node.js)	2020-11-02 12:53:16
3	Tuncay Alarcin	783	JavaScript (Node.js)	2023-10-29 17:35:57
4	Christopher Walther	843	JavaScript (Node.js)	2021-04-16 12:46:50
5	Chris Wong	844	JavaScript (Node.js)	2022-01-17 18:50:39
6	Khin Nyunt	1069	JavaScript (Node.js)	2021-11-16 16:11:22
7	Sander Hellesø	1096	JavaScript (Node.js)	2019-04-14 07:12:15
8	Samuel Högfeldt	1101	JavaScript (Node.js)	2022-08-04 06:34:13
9	Niamh Limerick	1229	JavaScript (Node.js)	2022-03-18 13:45:20
10	Ronit Mishra	1319	JavaScript (Node.js)	2025-01-26 09:52:57

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	138	JavaScript (SpiderMonkey)	2022-10-24 12:02:00
2	Jimmy Gustafsson	171	JavaScript (SpiderMonkey)	2024-08-13 21:31:16
3	Bjørn Chr. Soltvedt	436	JavaScript (SpiderMonkey)	2016-03-06 14:23:39
4	Zach Tschetter	440	JavaScript (SpiderMonkey)	2023-04-26 16:09:23
5	Peter Kedemo	509	JavaScript (SpiderMonkey)	2016-01-01 08:04:12
6	Dipendra Ranjitkar	652	JavaScript (SpiderMonkey)	2025-01-29 09:45:47
7	Andri Rafn	710	JavaScript (SpiderMonkey)	2018-04-24 17:53:28
8	Andri Andresson	729	JavaScript (SpiderMonkey)	2018-04-25 18:58:55
9	Samuel Jefferis	895	JavaScript (SpiderMonkey)	2020-12-02 00:48:05

#	User	Length	Language	Date
1	Timothy Gaede	1726	Julia	2024-04-16 14:27:21

#	User	Length	Language	Date
1	Dayan Ruben Gonzalez	502	Kotlin	2020-09-28 15:54:13
2	Hidden user	543	Kotlin	2017-11-25 23:59:28
3	Chris Johnson	561	Kotlin	2023-05-01 13:01:52
4	Troy Warmboe	580	Kotlin	2020-02-20 20:18:06
5	Aleksander	641	Kotlin	2024-11-01 18:55:42
6	Jacob Huebner	668	Kotlin	2020-06-25 04:46:27
7	Einar Kjellback	755	Kotlin	2020-08-20 07:45:40
8	Phường Lên	779	Kotlin	2019-11-06 21:30:12
9	Adam Rankin	781	Kotlin	2023-05-10 20:19:31
10	Nico Metger	792	Kotlin	2021-10-29 15:04:25

#	User	Length	Language	Date
1	Hidden user	1619	OCaml	2024-11-02 02:35:03
2	Philip White	1994	OCaml	2025-12-02 15:26:03

#	User	Length	Language	Date
1	Susanne Ragnemalm	1070	PHP	2018-05-19 00:20:46

#	User	Length	Language	Date
1	Thomas Feld	221	Python 2	2019-08-27 12:37:33
2	Andreas Björklund	277	Python 2	2019-03-10 18:20:10
3	Johan Wind	294	Python 2	2016-08-10 16:23:31
4	Jesper Öqvist	295	Python 2	2018-10-27 08:32:55
5	Johan Lyts	296	Python 2	2019-08-05 11:48:17
6	Asger Hautop Drewsen	304	Python 2	2016-01-27 15:57:06
7	Eoin Davey	312	Python 2	2017-09-13 16:45:35
8	Cấn Cát	326	Python 2	2016-10-07 03:53:57
9	Hidden user	328	Python 2	2017-05-31 20:59:52
10	Prateek Jain	331	Python 2	2015-05-31 11:28:06

#	User	Length	Language	Date
1	Theo Coyne Morgan	153	Python 3	2023-04-07 13:22:11
2	Gustav Elmqvist	159	Python 3	2023-03-04 23:27:48
3	Ahmed Chamseddine	203	Python 3	2024-08-08 15:33:21
4	Chung Yan Chow	207	Python 3	2026-02-21 00:39:56
5	Si Jie Tan	215	Python 3	2026-01-15 04:28:44
6	Clement Oh	217	Python 3	2023-07-20 13:08:31
7	Hakan Kjellerstrand	227	Python 3	2023-02-26 19:47:11
8	Tai Tze Kin	238	Python 3	2024-05-06 20:30:02
9	Hrant Hovhannisyan	243	Python 3	2018-03-28 12:22:45
10	Noah Ó Donnaile	245	Python 3	2017-10-02 06:44:40

#	User	Length	Language	Date
1	Thomas Feld	95	Ruby	2023-02-28 13:23:34
2	Clement Oh	190	Ruby	2024-03-03 10:09:23
3	Hidden user	275	Ruby	2019-12-15 16:39:54
4	Ajai Nelson	312	Ruby	2023-02-04 19:09:44
5	Kok Dith	325	Ruby	2021-08-25 13:53:10
6	Oleg Smelov	376	Ruby	2019-02-21 20:03:10
7	Rosa Gutierrez	426	Ruby	2022-05-11 18:33:19
8	Kevin Suwala	453	Ruby	2017-01-15 14:27:42

#	User	Length	Language	Date
1	David Rasch	949	Rust	2020-11-17 10:10:58
2	Hidden user	966	Rust	2022-10-26 03:21:08
3	Will	986	Rust	2025-02-11 04:31:41
4	Raphaël Gauthier	1026	Rust	2022-07-25 07:55:11
5	Aleksander	1069	Rust	2024-11-01 19:16:48
6	Joshua Zygmunt	1099	Rust	2022-11-23 00:43:43
7	Bas Dirks	1129	Rust	2022-01-06 21:23:37
8	Solomon235	1157	Rust	2019-02-12 18:36:47
9	Nicholas Johansan	1170	Rust	2023-06-18 06:59:25
10	Isak Jägberg	1180	Rust	2024-11-01 12:41:29

Solution running time distribution