Problem A
The Calculus of Ada — Problem Statistics

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Submissions	1585
Accepted submissions	852
Submission ratio	53.75%
Authors	829
Accepted authors	754
Author ratio	90.95%

#	User	Runtime	Language	Date
1	Adam Evans	0.00 s	C	2016-11-08 15:28:38
2	Adrien Coulier	0.00 s	C	2016-12-10 00:35:55
3	鹿目圆	0.00 s	C	2019-07-02 09:33:28
4	Ivan Petrov	0.00 s	C	2019-10-11 13:28:38
5	Bergur Snorrason	0.00 s	C	2020-01-26 15:02:10
6	Sambit Palit	0.00 s	C	2020-10-10 00:16:37
7	Kaaden RumanCam	0.00 s	C	2022-05-25 05:21:34
8	Hidden user	0.00 s	C	2024-11-09 17:07:18

#	User	Runtime	Language	Date
1	Khin Nyunt	0.02 s	C#	2017-02-11 18:24:04
2	Joshua Jacoby	0.02 s	C#	2020-05-12 00:41:11
3	Göran Andersson	0.02 s	C#	2022-06-12 11:37:59
4	Mikael Fiala-Lundström	0.03 s	C#	2021-06-17 14:43:51

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-05-27 02:40:32

#	User	Runtime	Language	Date
1	Patrick Bahr	0.04 s	F#	2021-02-28 16:13:33
2	Jacob Harris Cryer Kragh	0.04 s	F#	2023-01-07 18:23:55

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-07-15 21:32:38

#	User	Runtime	Language	Date
1	Leslie Yip	0.00 s	Haskell	2022-10-11 15:13:45
2	Hidden user	0.00 s	Haskell	2023-01-14 03:03:16
3	Ola Berglund	0.00 s	Haskell	2023-11-10 20:12:30
4	Steinar Simonnes	0.00 s	Haskell	2024-03-29 12:54:59
5	Qi Ji	0.01 s	Haskell	2018-07-22 20:52:41
6	Mattias Aronsson Adler	0.01 s	Haskell	2018-07-28 06:29:31
7	Hidden user	0.01 s	Haskell	2021-06-05 14:29:59
8	Sondre Lunde	0.01 s	Haskell	2021-09-22 20:16:36
9	Ryan O'Hara	0.01 s	Haskell	2022-02-26 22:17:29

#	User	Runtime	Language	Date
1	Micah Stairs	0.05 s	Java	2016-11-25 01:34:09
2	Martijn Muijsers	0.05 s	Java	2017-02-24 16:33:49
3	Finn Lidbetter	0.05 s	Java	2017-06-23 00:28:15
4	Isaac Lee	0.05 s	Java	2017-06-23 01:12:10
5	Javier Ojeda	0.05 s	Java	2017-09-23 19:43:05
6	Ariana Herbst	0.05 s	Java	2017-09-23 20:12:51
7	Alex Lind	0.05 s	Java	2017-09-23 21:23:37
8	Daniel Moyer	0.05 s	Java	2017-09-24 22:09:36
9	Martin Jakobsson	0.05 s	Java	2017-10-13 09:27:14
10	Zach Glick	0.05 s	Java	2017-10-13 21:30:11

#	User	Runtime	Language	Date
1	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-08-15 15:00:47

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2023-01-09 13:28:40
2	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-08 11:20:17

#	User	Runtime	Language	Date
1	Timothy Gaede	0.50 s	Julia	2024-05-11 12:07:51
2	Noszály Csaba	0.50 s	Julia	2025-03-31 09:33:53

#	User	Runtime	Language	Date
1	Adam Koprowski	0.15 s	Kotlin	2021-12-25 22:36:41
2	Adam Rankin	0.19 s	Kotlin	2023-09-01 03:48:13
3	Colin Gay	0.21 s	Kotlin	2019-05-27 01:03:57

#	User	Runtime	Language	Date
1	Hermon Mulat	0.02 s	Python 2	2017-01-14 02:19:59
2	Jeff Robertson	0.02 s	Python 2	2017-09-23 20:32:54
3	Rhys Balevicius	0.02 s	Python 2	2017-10-31 06:24:16
4	Uttam Thakore	0.03 s	Python 2	2016-11-07 00:43:23
5	Aarav Singh	0.03 s	Python 2	2017-09-23 21:07:38
6	Eric Williamson	0.03 s	Python 2	2017-09-23 21:58:43
7	Jesper Öqvist	0.03 s	Python 2	2018-09-22 20:35:54
8	Johan Lyts	0.03 s	Python 2	2020-02-01 14:56:43
9	Yanmarshus Bachtiar	0.03 s	Python 2	2020-12-07 04:39:33
10	Thomas Feld	0.04 s	Python 2	2019-09-30 14:46:11

#	User	Runtime	Language	Date
1	Sean Deitz	0.02 s	Python 3	2016-11-07 21:11:31
2	James Nickelsen	0.02 s	Python 3	2016-11-07 23:55:01
3	Alan Grant	0.02 s	Python 3	2016-11-08 06:23:20
4	Abdullah Fahad	0.02 s	Python 3	2016-12-11 16:27:06
5	Tom Biju	0.02 s	Python 3	2016-12-19 01:58:27
6	Brandon Ibbotson	0.02 s	Python 3	2017-04-04 20:11:10
7	Ciara Godwin	0.02 s	Python 3	2017-04-05 15:33:35
8	Josenildo Silva	0.02 s	Python 3	2017-07-14 18:31:13
9	Cian Ruane	0.02 s	Python 3	2017-08-06 16:55:58
10	Денис Соболев	0.02 s	Python 3	2017-08-14 19:32:37

#	User	Runtime	Language	Date
1	Logan Bond	0.03 s	Ruby	2016-11-07 22:37:30
2	Thomas Feld	0.06 s	Ruby	2023-03-28 16:03:25
3	Clement Oh	0.06 s	Ruby	2023-10-02 14:46:15

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-02-08 13:54:51
2	Giang Đào	0.00 s	Rust	2023-01-03 16:49:40
3	David Rasch	0.00 s	Rust	2023-09-15 10:45:11
4	vixi	0.00 s	Rust	2025-05-03 19:20:36

#	User	Length	Language	Date
1	鹿目圆	526	C	2019-07-02 09:33:28
2	Hidden user	554	C	2024-11-09 17:07:18
3	Adrien Coulier	583	C	2016-12-10 00:35:55
4	Kaaden RumanCam	606	C	2022-05-25 05:21:34
5	Adam Evans	822	C	2016-11-08 15:28:38
6	Sambit Palit	1175	C	2020-10-10 00:16:37
7	Ivan Petrov	1260	C	2019-10-11 13:28:38
8	Bergur Snorrason	1947	C	2020-01-26 15:02:10

#	User	Length	Language	Date
1	Göran Andersson	1069	C#	2022-06-12 11:37:59
2	Mikael Fiala-Lundström	1624	C#	2021-06-17 14:43:51
3	Joshua Jacoby	1920	C#	2020-05-12 00:41:11
4	Khin Nyunt	3507	C#	2017-02-11 18:24:04

#	User	Length	Language	Date
1	Love Forsberg	466	C++	2017-05-05 09:27:36
2	甘宸豪	474	C++	2024-11-03 06:51:27
3	bekarhunmain	475	C++	2024-08-26 19:38:54
4	Johan Wind	478	C++	2018-11-16 17:56:29
5	Hidden user	492	C++	2024-10-25 17:25:08
6	William Gan	501	C++	2018-02-09 18:51:49
7	Yeung Man Tsung	501	C++	2022-12-01 09:18:10
8	Armen Andreasyan	520	C++	2019-03-23 15:40:14
9	Nguyen Tran Huu Duc	531	C++	2022-01-21 11:07:31
10	Elias Lolck	533	C++	2021-02-26 17:08:19

#	User	Length	Language	Date
1	David Cawthon	709	Common Lisp	2019-05-27 02:40:32

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	583	F#	2023-01-07 18:23:55
2	Patrick Bahr	2016	F#	2021-02-28 16:13:33

#	User	Length	Language	Date
1	Norbert Voelker	1023	Go	2021-07-15 21:32:38

#	User	Length	Language	Date
1	Ryan O'Hara	368	Haskell	2022-02-26 22:17:29
2	Sondre Lunde	387	Haskell	2021-09-22 20:16:36
3	Ola Berglund	391	Haskell	2023-11-10 20:49:17
4	Hidden user	400	Haskell	2023-01-14 03:03:16
5	Qi Ji	427	Haskell	2018-07-22 20:52:41
6	Mattias Aronsson Adler	541	Haskell	2018-07-28 06:29:31
7	Steinar Simonnes	576	Haskell	2024-03-29 12:54:59
8	Leslie Yip	610	Haskell	2022-10-11 15:13:45
9	Hidden user	11721	Haskell	2021-06-05 14:29:59

#	User	Length	Language	Date
1	Jiru Xu	712	Java	2017-10-24 03:35:28
2	Doug Goodman	725	Java	2017-08-12 19:27:39
3	Sam Huynh	728	Java	2021-07-30 03:50:22
4	Jerry Zhu	739	Java	2018-03-07 20:01:04
5	Robert Slutsky	782	Java	2018-09-17 15:46:15
6	Jacob Lee	784	Java	2020-06-13 20:44:15
7	Brent Yorgey	794	Java	2016-11-05 19:32:12
8	Hidden user	800	Java	2018-05-24 21:16:26
9	Harrison Weigel	803	Java	2016-11-05 20:13:36
10	Vincent Lin	808	Java	2018-02-04 23:09:53

#	User	Length	Language	Date
1	Khin Nyunt	922	JavaScript (Node.js)	2021-08-15 16:02:51

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	192	JavaScript (SpiderMonkey)	2023-01-09 22:41:24
2	Christian Cederquist	460	JavaScript (SpiderMonkey)	2023-03-08 11:20:17

#	User	Length	Language	Date
1	Noszály Csaba	653	Julia	2025-03-31 09:33:53
2	Timothy Gaede	918	Julia	2024-05-11 12:07:51

#	User	Length	Language	Date
1	Adam Koprowski	582	Kotlin	2021-12-25 22:36:41
2	Colin Gay	874	Kotlin	2019-05-27 01:03:57
3	Adam Rankin	970	Kotlin	2023-09-01 03:48:13

#	User	Length	Language	Date
1	Thomas Feld	173	Python 2	2019-09-30 14:46:11
2	Johan Lyts	253	Python 2	2020-02-01 21:27:10
3	Jeff Robertson	378	Python 2	2017-09-23 20:32:54
4	Uttam Thakore	406	Python 2	2016-11-07 00:43:23
5	Jesper Öqvist	491	Python 2	2018-09-22 20:35:54
6	Yanmarshus Bachtiar	527	Python 2	2020-12-07 04:39:33
7	Hermon Mulat	548	Python 2	2017-01-14 02:19:59
8	Rhys Balevicius	553	Python 2	2017-10-31 06:24:16
9	Aarav Singh	702	Python 2	2017-09-23 21:07:38
10	Eric Williamson	921	Python 2	2017-09-23 21:58:43

#	User	Length	Language	Date
1	Benjamin Z White	127	Python 3	2023-05-07 22:38:43
2	Guk Yi Siong	133	Python 3	2023-08-12 20:22:39
3	Christofer Ohlsson	144	Python 3	2022-09-21 13:18:14
4	Ahmed Chamseddine	151	Python 3	2025-01-06 22:57:23
5	Oskar Haarklou Veileborg	160	Python 3	2021-02-28 21:55:06
6	Jason Cannon	173	Python 3	2019-12-20 17:54:10
7	Haruto Tanaka	173	Python 3	2021-10-08 23:55:08
8	Thibault Raffaillac	175	Python 3	2019-11-07 08:22:37
9	Suus Brommer	176	Python 3	2024-04-16 17:05:52
10	Tai Tze Kin	182	Python 3	2024-05-09 09:26:14

#	User	Length	Language	Date
1	Thomas Feld	94	Ruby	2023-08-29 11:14:25
2	Clement Oh	173	Ruby	2023-10-02 14:46:15
3	Logan Bond	511	Ruby	2016-11-07 22:37:30

#	User	Length	Language	Date
1	Bas Dirks	744	Rust	2022-02-08 13:54:51
2	vixi	765	Rust	2025-05-03 19:20:36
3	David Rasch	839	Rust	2023-09-15 10:45:11
4	Giang Đào	6693	Rust	2023-01-03 16:49:40

Solution running time distribution