Problem A
Access Denied — Problem Statistics

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Submissions	2967
Accepted submissions	789
Submission ratio	26.59%
Authors	782
Full solves [?]	600
Full solve Ratio	76.73%

#	User	Runtime	Language	Date
1	Richard Ewald	0.00 s	C	2023-03-31 06:16:32
2	Bergur Snorrason	0.01 s	C	2021-11-28 07:36:33
3	Andrew Jones	0.01 s	C	2021-12-30 21:45:22
4	Marco Rubin	0.01 s	C	2022-04-08 23:24:09
5	Lawry Sorenson	0.01 s	C	2022-08-13 21:17:17
6	Ioannis Br	0.01 s	C	2022-11-09 03:31:49
7	Nick Hargrove	0.01 s	C	2022-11-15 21:54:50
8	TheACEofTrump	0.01 s	C	2022-11-16 04:09:16
9	Sebastian Oveland	0.01 s	C	2023-03-18 19:52:18
10	Alexander Bilde Pedersen	0.01 s	C	2023-04-25 23:53:25

#	User	Runtime	Language	Date
1	Felix Andersen	0.04 s	C#	2022-09-21 13:25:23
2	Ahmad Barhamje	0.04 s	C#	2022-12-11 13:25:58
3	Martin Walker	0.06 s	C#	2025-06-19 04:20:58

#	User	Runtime	Language	Date
1	Þórhallur Tryggvason	0.00 s	C++	2024-05-20 14:31:24
2	Joakim Blikstad	0.01 s	C++	2021-11-26 10:31:05
3	Петро Тарнавський	0.01 s	C++	2021-11-27 10:22:53
4	Vasyl	0.01 s	C++	2021-11-27 10:27:00
5	Elias Lolck	0.01 s	C++	2021-11-27 11:06:14
6	Thor Eriksen	0.01 s	C++	2021-11-27 11:11:51
7	Shrayam Mitra	0.01 s	C++	2021-11-27 11:18:10
8	Mitko Nikov	0.01 s	C++	2021-11-27 11:21:58
9	Andree Stef	0.01 s	C++	2021-11-27 11:34:35
10	Hidden user	0.01 s	C++	2021-11-27 11:48:35

#	User	Runtime	Language	Date
1	Baxter Madore	0.01 s	Go	2025-02-10 20:28:30
2	Stefan Samuelsson	0.03 s	Go	2023-04-29 14:41:35
3	Norbert Voelker	0.08 s	Go	2021-11-28 22:18:19
4	Iker Lissarrague	0.09 s	Go	2022-03-08 08:23:48
5	Shiliang Tong	0.09 s	Go	2023-05-06 21:16:57

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.03 s	Haskell	2025-02-03 17:06:50
2	Viktor Kronvall	0.05 s	Haskell	2022-08-22 21:19:03
3	Lars Brünjes	0.15 s	Haskell	2023-01-30 18:37:04
4	Brent Yorgey	0.17 s	Haskell	2021-11-27 21:41:02

#	User	Runtime	Language	Date
1	Danniel Alcantara	0.12 s	Java	2024-05-03 10:04:11
2	Crystal Sharpe	0.13 s	Java	2022-02-22 04:30:38
3	Sparsh Sanchorawala	0.14 s	Java	2023-02-03 23:33:58
4	Ian Mahendra Setiawan	0.14 s	Java	2026-02-03 12:41:20
5	Marcus Friberg	0.15 s	Java	2022-02-11 10:37:16
6	Ezreal	0.15 s	Java	2022-04-21 09:55:29
7	Logan Pipes	0.16 s	Java	2022-02-21 19:14:36
8	Andrew Polizzotto	0.18 s	Java	2023-02-03 23:47:04
9	Hussin Suleiman	0.18 s	Java	2024-05-17 17:23:34
10	Marco Troltsch	0.20 s	Java	2022-12-02 20:46:06

#	User	Runtime	Language	Date
1	Ihor Kolisnyk	0.11 s	JavaScript (Node.js)	2026-03-06 12:39:48

#	User	Runtime	Language	Date
1	Jimmy Gustafsson	0.03 s	JavaScript (SpiderMonkey)	2022-09-07 01:17:42
2	Zeyad Osama	0.03 s	JavaScript (SpiderMonkey)	2024-01-22 03:17:52
3	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2024-06-26 15:35:02
4	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-03-10 20:41:12

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2025-07-09 19:34:46

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.31 s	Kotlin	2022-04-10 18:05:06
2	Jacob Huebner	0.34 s	Kotlin	2022-04-14 03:25:01

#	User	Runtime	Language	Date
1	Adriaan de Vries	0.05 s	Python 2	2021-11-30 22:31:18
2	Matzuka	0.07 s	Python 2	2021-12-01 17:56:22
3	Andreas Björklund	0.08 s	Python 2	2021-11-27 11:41:01

#	User	Runtime	Language	Date
1	Ole Markus Bråthen	0.06 s	Python 3	2024-10-28 18:46:32
2	Gustav Mogren	0.06 s	Python 3	2025-01-25 09:46:59
3	Max Bylund	0.06 s	Python 3	2025-01-25 10:46:11
4	Edvin Loberg	0.06 s	Python 3	2025-01-25 11:24:28
5	Vincent Tandya	0.07 s	Python 3	2021-12-05 12:31:27
6	Hidden user	0.07 s	Python 3	2022-12-21 13:53:02
7	klimisnotmilk	0.07 s	Python 3	2023-05-26 06:02:05
8	Hidden user	0.07 s	Python 3	2023-09-04 22:46:55
9	Matias Frank Jensen	0.07 s	Python 3	2023-10-15 17:26:27
10	Kévin Dubrulle	0.07 s	Python 3	2024-10-22 21:05:38

#	User	Runtime	Language	Date
1	Thomas Feld	0.07 s	Ruby	2023-04-20 15:44:39

#	User	Runtime	Language	Date
1	Muhammad Rais Fathin Mudzakir	0.01 s	Rust	2022-04-28 20:22:21
2	Bas Dirks	0.01 s	Rust	2022-05-29 13:37:57
3	Mathias	0.01 s	Rust	2022-06-22 17:37:22
4	Dylan Dinh	0.01 s	Rust	2022-09-08 01:19:02
5	Hidden user	0.01 s	Rust	2022-09-28 01:33:35
6	Daniel Anker Hermansen	0.01 s	Rust	2023-05-17 19:03:47
7	Simon Hallefält	0.01 s	Rust	2023-06-27 11:02:13
8	Erik Magnusson	0.01 s	Rust	2024-02-14 19:35:01
9	Vincent Lagerros	0.01 s	Rust	2024-06-02 15:41:27
10	Oscar Ulriksen	0.01 s	Rust	2025-01-25 10:29:02

#	User	Runtime	Language	Date
1	Thomas Hügel	0.01 s	Zig	2024-12-12 16:25:23
2	Oleksii Ihnatenko	0.03 s	Zig	2025-07-15 19:46:47

#	User	Length	Language	Date
1	Evan Michael Bailey	750	C	2023-07-06 23:05:56
2	TheACEofTrump	973	C	2022-11-16 04:09:16
3	Sebastian Oveland	986	C	2023-03-18 19:52:18
4	Ioannis Br	1024	C	2022-11-09 03:39:16
5	Bergur Snorrason	1025	C	2021-11-28 07:36:33
6	Lawry Sorenson	1161	C	2022-08-13 21:17:17
7	Bo Stokes	1445	C	2025-07-14 20:51:11
8	Alexander Bilde Pedersen	1478	C	2023-04-25 23:53:25
9	Andrew Jones	1716	C	2021-12-30 21:45:22
10	Richard Ewald	2030	C	2023-03-31 06:16:32

#	User	Length	Language	Date
1	Martin Walker	1713	C#	2025-06-19 04:20:58
2	Ahmad Barhamje	2203	C#	2022-12-11 13:25:58
3	Felix Andersen	4161	C#	2022-09-21 13:25:23

#	User	Length	Language	Date
1	張瑋倫	546	C++	2024-08-21 04:55:04
2	Evan Michael Bailey	558	C++	2023-07-06 22:09:38
3	Egor	585	C++	2025-07-28 23:44:54
4	Maciej Sidor	586	C++	2023-05-15 18:25:19
5	Hidden user	599	C++	2023-05-22 05:14:00
6	Ludo Pulles	638	C++	2021-12-13 13:38:36
7	Tai Tze Kin	669	C++	2024-09-09 18:09:30
8	Hidden user	690	C++	2022-04-18 05:12:08
9	meiqi Huan	705	C++	2024-12-07 13:21:35
10	Markus Mathiasen	710	C++	2021-11-30 21:03:47

#	User	Length	Language	Date
1	Stefan Samuelsson	1019	Go	2023-04-29 14:41:35
2	Baxter Madore	1589	Go	2025-02-10 20:28:30
3	Norbert Voelker	1806	Go	2021-11-28 22:18:19
4	Shiliang Tong	2039	Go	2023-05-06 21:16:57
5	Iker Lissarrague	2101	Go	2022-03-08 08:23:48

#	User	Length	Language	Date
1	Viktor Kronvall	1540	Haskell	2022-08-22 21:19:03
2	Lars Brünjes	2421	Haskell	2023-01-30 18:37:04
3	Steinar Simonnes	5605	Haskell	2025-02-03 17:06:50
4	Brent Yorgey	8679	Haskell	2021-11-27 21:41:02

#	User	Length	Language	Date
1	Samarth Upadhya	941	Java	2022-01-01 02:28:46
2	Jesper Bech Christensen	1154	Java	2021-11-27 17:05:34
3	Aaron Michael	1199	Java	2024-03-04 14:09:12
4	Ian Mahendra Setiawan	1213	Java	2026-02-03 12:41:20
5	Tamonash Chakraborty	1365	Java	2021-11-27 11:50:27
6	Marco Troltsch	1368	Java	2022-12-02 20:46:06
7	Luke Jenquin	1379	Java	2023-03-23 02:57:27
8	Els	1442	Java	2023-12-01 14:47:57
9	Collin Jakubik	1491	Java	2021-12-05 02:32:31
10	Philip Sala	1501	Java	2024-11-19 19:21:54

#	User	Length	Language	Date
1	Ihor Kolisnyk	1196	JavaScript (Node.js)	2026-03-06 12:39:48

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	641	JavaScript (SpiderMonkey)	2023-03-10 20:45:20
2	Jimmy Gustafsson	653	JavaScript (SpiderMonkey)	2022-09-07 01:17:42
3	Bjørn Chr. Soltvedt	858	JavaScript (SpiderMonkey)	2024-06-26 15:35:02
4	Zeyad Osama	1341	JavaScript (SpiderMonkey)	2024-01-22 03:17:52

#	User	Length	Language	Date
1	Timothy Gaede	1834	Julia	2025-07-09 19:34:46

#	User	Length	Language	Date
1	Jacob Huebner	908	Kotlin	2022-04-14 03:25:01
2	Nicholas Johnson	994	Kotlin	2022-04-10 18:05:06

#	User	Length	Language	Date
1	Adriaan de Vries	530	Python 2	2021-11-30 22:31:18
2	Andreas Björklund	642	Python 2	2021-11-27 11:41:01
3	Matzuka	983	Python 2	2021-12-01 17:56:22

#	User	Length	Language	Date
1	Carl Forsinge	115	Python 3	2024-11-20 13:40:25
2	Hidden user	188	Python 3	2023-01-09 16:30:49
3	David Llorens	232	Python 3	2023-08-29 13:09:32
4	Diyar	244	Python 3	2023-07-27 08:08:59
5	Nicholas Russell Saerang	249	Python 3	2023-07-15 18:42:33
6	Luke Moran	263	Python 3	2023-07-01 03:17:46
7	Daniel Bogorad	271	Python 3	2025-12-18 20:31:46
8	Ahmed Chamseddine	276	Python 3	2025-06-05 14:16:48
9	David Stangl	372	Python 3	2021-12-04 09:30:51
10	Hidden user	383	Python 3	2023-02-20 22:33:26

#	User	Length	Language	Date
1	Thomas Feld	155	Ruby	2023-04-21 14:32:08

#	User	Length	Language	Date
1	Bas Dirks	1135	Rust	2022-05-29 13:37:57
2	Vincent Lagerros	1459	Rust	2024-06-02 15:41:57
3	Dylan Dinh	1936	Rust	2022-09-08 01:19:02
4	Simon Hallefält	2235	Rust	2023-06-27 11:02:13
5	papakamir néron	2434	Rust	2025-05-18 15:55:05
6	Hidden user	2518	Rust	2022-09-28 01:33:35
7	Mathias	2659	Rust	2022-06-22 17:37:22
8	Oscar Ulriksen	4588	Rust	2025-01-25 10:29:02
9	Erik Magnusson	4874	Rust	2024-02-14 19:35:01
10	Muhammad Rais Fathin Mudzakir	7984	Rust	2022-04-28 20:22:21

#	User	Length	Language	Date
1	Thomas Hügel	2469	Zig	2024-12-12 16:25:23
2	Oleksii Ihnatenko	2498	Zig	2025-07-15 19:46:47

Solution running time distribution