Problem A
Tetration — Problem Statistics

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Submissions	4252
Accepted submissions	2438
Submission ratio	57.34%
Authors	2255
Full solves [?]	2161
Full solve Ratio	95.83%

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	APL	2023-03-08 15:50:37
2	Donald Trump	0.01 s	APL	2025-09-19 02:28:24
3	Si Jie Tan	0.01 s	APL	2025-12-12 03:19:37

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	Bash	2023-04-24 15:44:32
2	Chenzhang Hu	0.07 s	Bash	2023-09-06 18:24:57

#	User	Runtime	Language	Date
1	John Ladera	0.02 s	C#	2018-03-22 01:23:00
2	Abolfazl Sherafat	0.02 s	C#	2019-09-04 23:16:35
3	Alex Van Keulen	0.02 s	C#	2019-09-06 19:47:46
4	Thomas Norris	0.02 s	C#	2019-09-27 21:25:08
5	Cahyo Nugroho	0.02 s	C#	2020-03-04 03:47:03
6	Vicky Irmawan	0.02 s	C#	2020-07-22 04:10:02
7	Abhishek Gupta	0.02 s	C#	2020-09-07 10:18:13
8	Georgios Leandros Kyriazis	0.02 s	C#	2020-11-14 09:53:00
9	Maykal Droshev	0.02 s	C#	2021-01-06 17:50:19
10	Toby Maynard	0.02 s	C#	2021-02-09 23:26:21

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-05-10 02:51:54
2	Hidden user	0.02 s	Common Lisp	2019-05-30 08:26:33

#	User	Runtime	Language	Date
1	Patrick Bahr	0.04 s	F#	2021-02-20 18:40:05
2	Sebastian Sternberg	0.04 s	F#	2021-09-13 17:48:24
3	Jacob Harris Cryer Kragh	0.04 s	F#	2022-06-11 16:19:16
4	David Vinje	0.04 s	F#	2022-08-09 17:08:36

#	User	Runtime	Language	Date
1	Hidden user	0.07 s	Go	2018-10-12 01:48:16
2	Krzysztof Gibuła	0.07 s	Go	2019-01-19 19:24:29
3	Theo Coyne Morgan	0.07 s	Go	2019-03-26 22:41:54
4	T COM	0.08 s	Go	2021-01-13 16:54:41
5	Norbert Voelker	0.08 s	Go	2021-04-09 23:42:59
6	Hidden user	0.08 s	Go	2021-12-16 15:29:10
7	Andreas Gottschalk Krath	0.08 s	Go	2022-05-05 21:35:15

#	User	Runtime	Language	Date
1	Nick Pastrana	0.04 s	Java	2024-09-07 22:04:02
2	Rene Argento	0.04 s	Java	2025-04-05 03:36:15
3	Nick Wu	0.05 s	Java	2017-10-14 20:06:45
4	Hidden user	0.05 s	Java	2017-10-14 20:22:18
5	Daniel Moyer	0.05 s	Java	2017-10-14 20:46:31
6	Finn Lidbetter	0.05 s	Java	2017-10-14 20:54:58
7	Blake Mealey	0.05 s	Java	2017-10-14 21:09:24
8	Kevin Chevalier	0.05 s	Java	2017-10-14 21:20:01
9	Kenneth Yang	0.05 s	Java	2017-10-14 22:09:12
10	Aldo Chow	0.05 s	Java	2017-10-14 22:11:54

#	User	Runtime	Language	Date
1	Ram Basnet	0.05 s	JavaScript (Node.js)	2018-10-25 20:05:30
2	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-29 05:28:00
3	Hidden user	0.05 s	JavaScript (Node.js)	2023-11-21 06:44:35
4	Klemen Randl	0.08 s	JavaScript (Node.js)	2022-07-07 19:57:13
5	Vu Van Dung	0.08 s	JavaScript (Node.js)	2022-09-14 20:36:41
6	asterisk man	0.41 s	JavaScript (Node.js)	2021-06-06 17:57:51
7	John	0.42 s	JavaScript (Node.js)	2020-08-07 03:13:09
8	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-07 09:56:06
9	Orsolya Galba-Vajda	0.42 s	JavaScript (Node.js)	2020-11-24 13:07:49
10	Chris Wong	0.42 s	JavaScript (Node.js)	2021-02-02 03:16:12

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-19 21:21:36
2	Zachary DeStefano	0.02 s	JavaScript (SpiderMonkey)	2020-09-04 02:06:48
3	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2020-12-30 19:04:45
4	Nicklas Utgaard	0.02 s	JavaScript (SpiderMonkey)	2021-04-17 17:59:09
5	Håkan Lindahl	0.02 s	JavaScript (SpiderMonkey)	2022-06-16 16:52:40
6	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-08-15 23:13:16
7	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-11-15 22:39:51
8	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-19 06:10:17

#	User	Runtime	Language	Date
1	Timothy Gaede	0.52 s	Julia	2026-03-01 06:39:36

#	User	Runtime	Language	Date
1	Troy Warmboe	0.16 s	Kotlin	2023-04-10 23:04:35
2	Merih Bora Poçan	0.18 s	Kotlin	2020-07-31 13:55:30
3	Dayan Ruben Gonzalez	0.18 s	Kotlin	2020-10-07 18:05:41
4	Christian Komusiewicz	0.18 s	Kotlin	2020-12-24 00:06:43
5	Albert Pala	0.18 s	Kotlin	2021-06-29 15:03:59
6	Alan Pramuk	0.18 s	Kotlin	2022-07-26 15:41:50
7	Neil Harmon	0.20 s	Kotlin	2019-04-26 09:12:49
8	Einar Kjellback	0.20 s	Kotlin	2019-11-28 18:31:41
9	Adam Rankin	0.20 s	Kotlin	2023-04-25 00:38:37

#	User	Runtime	Language	Date
1	Martin Stensgård	0.18 s	OCaml	2021-01-01 05:32:10

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-02-17 09:16:35
2	David Connolly	0.00 s	Pascal	2022-04-11 23:50:25

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-06-15 08:26:23
2	Andre Wahyudi	0.01 s	PHP	2022-09-26 09:45:23

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2018-11-15 19:31:54
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-22 08:01:21

#	User	Runtime	Language	Date
1	Kasper Borys	0.02 s	Python 2	2017-10-14 20:16:51
2	Gregory Zhang	0.02 s	Python 2	2017-10-14 20:19:07
3	Fan Zhang	0.02 s	Python 2	2017-10-14 20:38:56
4	Ethan Arnold	0.02 s	Python 2	2017-10-14 20:43:52
5	Euirim Choi	0.02 s	Python 2	2017-10-14 21:31:16
6	Xinhao Liu	0.02 s	Python 2	2017-10-14 21:49:17
7	Maggie Liu	0.02 s	Python 2	2017-10-14 21:55:24
8	Eric Williamson	0.02 s	Python 2	2017-10-14 22:01:43
9	Thomas Yuan	0.02 s	Python 2	2017-10-14 22:56:27
10	Sajad Sameti	0.02 s	Python 2	2017-10-14 23:27:27

#	User	Runtime	Language	Date
1	Andrew Lin	0.02 s	Python 3	2017-10-14 20:15:06
2	Amanpreet Singh	0.02 s	Python 3	2017-10-14 20:15:51
3	Minh Nguyen	0.02 s	Python 3	2017-10-14 20:18:14
4	Mihai Andreescu	0.02 s	Python 3	2017-10-14 20:19:54
5	Justin Mah	0.02 s	Python 3	2017-10-14 20:37:47
6	Wanqi Zhu	0.02 s	Python 3	2017-10-14 20:39:40
7	Wenzhang Qian	0.02 s	Python 3	2017-10-14 20:45:52
8	Reginald Lybbert	0.02 s	Python 3	2017-10-14 20:46:21
9	Victor Zheng	0.02 s	Python 3	2017-10-14 20:49:57
10	Albert Luu	0.02 s	Python 3	2017-10-14 21:01:16

#	User	Runtime	Language	Date
1	Jinwoo Lee	0.13 s	Racket	2025-02-04 06:49:24

#	User	Runtime	Language	Date
1	Lee Tze Han	0.04 s	Ruby	2018-06-17 15:09:57
2	Hidden user	0.04 s	Ruby	2018-10-12 01:44:05
3	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-10-22 23:06:25
4	Martin Rønning	0.05 s	Ruby	2021-01-14 17:22:24
5	Hadi Qovaizi	0.05 s	Ruby	2021-07-08 22:35:15
6	Régis Hanol	0.05 s	Ruby	2022-01-09 16:25:03
7	TobiasZ	0.05 s	Ruby	2022-01-30 18:30:03
8	Thomas Feld	0.06 s	Ruby	2022-11-04 14:36:03
9	Christian Pilegaard Cederquist	0.06 s	Ruby	2022-11-15 22:34:44
10	Oliver Ruden	0.06 s	Ruby	2023-02-06 01:09:01

#	User	Runtime	Language	Date
1	Anton J Olsson	0.09 s	TypeScript	2023-08-22 01:50:07

#	User	Length	Language	Date
1	Thomas Feld	17	APL	2023-05-15 09:49:48
2	Si Jie Tan	17	APL	2025-12-12 03:19:37
3	Donald Trump	19	APL	2025-09-19 02:28:24

#	User	Length	Language	Date
1	Thomas Feld	16	Bash	2023-09-12 15:54:46
2	Chenzhang Hu	25	Bash	2025-09-13 17:47:43

#	User	Length	Language	Date
1	Martin Blom	73	C	2023-10-20 19:20:39
2	Matthew Weston	113	C	2021-12-31 13:46:16
3	ChiQuang Trac	117	C	2017-10-19 02:34:52
4	Allan Nouri	117	C	2023-10-31 17:18:02
5	Muhammed Ali Aytürk	118	C	2020-02-29 23:00:16
6	Coleton Kotch	121	C	2020-10-02 00:37:51
7	William Ball	123	C	2020-03-16 02:45:25
8	紅茶	123	C	2023-02-13 02:00:33
9	Kaaden RumanCam	126	C	2021-10-05 22:35:32
10	Emil Bengtsson	131	C	2018-04-09 19:54:12

#	User	Length	Language	Date
1	Thomas Norris	176	C#	2019-09-27 21:25:08
2	Esty Crow	181	C#	2022-10-06 07:32:31
3	Gergo Csonka	204	C#	2021-02-22 00:36:59
4	Fernanda Ferrer Ortega	209	C#	2023-03-23 01:22:42
5	Vicky Irmawan	219	C#	2020-07-22 04:10:02
6	Gretel Rojas	219	C#	2023-02-28 03:31:15
7	María Fernanda Ledesma Aguilar	219	C#	2023-03-01 15:38:54
8	Santiago Sarabia Martínez	219	C#	2023-04-21 08:50:54
9	Renata Magaña Ramírez de Arellano	219	C#	2023-04-24 08:04:51
10	Lucía María Alvarez Sánchez	219	C#	2023-05-24 21:36:04

#	User	Length	Language	Date
1	Robert Logi Jonsson	89	C++	2023-04-08 23:08:16
2	Tyler Fernando	110	C++	2022-10-10 02:40:44
3	Richard Luu	111	C++	2022-09-06 02:07:33
4	Leo Lee	111	C++	2024-09-13 00:43:26
5	Zane Yu	112	C++	2018-12-11 12:51:19
6	Johann Cruz	112	C++	2019-02-16 06:37:50
7	Juan Marquez	113	C++	2019-11-05 20:47:54
8	Thu Vo	115	C++	2020-11-06 00:32:14
9	Fillbert Eugene Susanto	116	C++	2020-05-10 17:07:26
10	Nicholas Jimmy Alden	116	C++	2022-12-06 18:56:03

#	User	Length	Language	Date
1	Hidden user	74	Common Lisp	2019-05-30 08:26:33
2	David Cawthon	186	Common Lisp	2019-05-10 02:51:54

#	User	Length	Language	Date
1	David Vinje	120	F#	2022-08-09 17:08:36
2	Jacob Harris Cryer Kragh	149	F#	2022-06-11 16:19:16
3	Sebastian Sternberg	390	F#	2021-09-13 17:48:24
4	Patrick Bahr	1747	F#	2021-02-20 18:40:05

#	User	Length	Language	Date
1	Hidden user	124	Go	2018-10-12 01:48:16
2	T COM	133	Go	2021-01-13 16:54:41
3	Hidden user	138	Go	2021-12-16 15:29:10
4	Andreas Gottschalk Krath	139	Go	2022-05-05 21:35:15
5	Theo Coyne Morgan	140	Go	2019-03-26 22:41:54
6	Krzysztof Gibuła	275	Go	2019-01-19 19:24:29
7	Norbert Voelker	619	Go	2021-04-09 23:42:59

#	User	Length	Language	Date
1	Ethan Partidas	48	Haskell	2018-12-10 01:40:36
2	Henrik Olsen Eide	48	Haskell	2021-12-20 13:31:13
3	Phan Ngọc Tiên	54	Haskell	2022-03-20 21:41:54
4	Håkon Flatval	60	Haskell	2018-09-02 19:04:26
5	Conor McGovern	64	Haskell	2018-05-31 16:59:26
6	Oisín Mac Fhearaí	65	Haskell	2021-01-12 21:10:10
7	Hidden user	73	Haskell	2018-10-12 01:46:38
8	Caleb Surovik	84	Haskell	2021-06-16 07:27:13
9	Aaron Lengyel	84	Haskell	2022-11-09 09:29:43
10	Tim Put	88	Haskell	2019-09-20 23:38:55

#	User	Length	Language	Date
1	Lim Ting Kai	164	Java	2023-06-04 17:46:16
2	Brennan Cleland	178	Java	2022-11-18 22:40:40
3	Henry Wang	202	Java	2017-10-14 20:53:19
4	Lucas Arsenault	203	Java	2021-04-18 09:42:20
5	Hidden user	208	Java	2021-06-06 04:35:14
6	Hidden user	212	Java	2020-05-27 05:12:36
7	Paul Boddington	212	Java	2020-07-15 22:39:13
8	Michael O'Brien	214	Java	2021-08-25 03:28:02
9	Henrique Pitta Laranjinha	217	Java	2025-01-18 20:41:46
10	Andre Leone	218	Java	2017-10-14 21:11:49

#	User	Length	Language	Date
1	Vu Van Dung	201	JavaScript (Node.js)	2022-09-14 20:36:41
2	asterisk man	211	JavaScript (Node.js)	2021-06-06 17:57:51
3	Ali	236	JavaScript (Node.js)	2021-12-21 20:43:32
4	Chris Wong	253	JavaScript (Node.js)	2021-02-02 03:16:12
5	Howard Tin Chi Chan	281	JavaScript (Node.js)	2021-03-01 18:58:46
6	Hidden user	288	JavaScript (Node.js)	2023-11-21 06:44:35
7	Ram Basnet	289	JavaScript (Node.js)	2018-10-25 20:05:30
8	Antoine Bauri	295	JavaScript (Node.js)	2021-02-22 15:56:51
9	Orsolya Galba-Vajda	297	JavaScript (Node.js)	2020-11-24 13:07:49
10	Klemen Randl	500	JavaScript (Node.js)	2022-07-07 19:57:13

#	User	Length	Language	Date
1	Jimmy Gustafsson	28	JavaScript (SpiderMonkey)	2022-08-21 10:53:43
2	Christian Pilegaard Cederquist	28	JavaScript (SpiderMonkey)	2022-11-15 22:39:51
3	Evan Magill	43	JavaScript (SpiderMonkey)	2024-04-19 06:10:17
4	Zachary DeStefano	50	JavaScript (SpiderMonkey)	2020-09-04 02:06:48
5	Peter Menyes	56	JavaScript (SpiderMonkey)	2020-12-30 19:04:45
6	Bjørn Chr. Soltvedt	58	JavaScript (SpiderMonkey)	2017-10-19 21:21:36
7	Nicklas Utgaard	69	JavaScript (SpiderMonkey)	2021-04-17 17:59:09
8	Håkan Lindahl	70	JavaScript (SpiderMonkey)	2022-06-16 16:52:40

#	User	Length	Language	Date
1	Timothy Gaede	731	Julia	2026-03-01 06:39:36

#	User	Length	Language	Date
1	Einar Kjellback	118	Kotlin	2019-11-28 18:31:41
2	Troy Warmboe	118	Kotlin	2023-04-10 23:04:35
3	Dayan Ruben Gonzalez	123	Kotlin	2020-10-07 18:05:41
4	Albert Pala	133	Kotlin	2021-06-29 15:03:59
5	Christian Komusiewicz	164	Kotlin	2020-12-24 00:06:43
6	Alan Pramuk	201	Kotlin	2022-07-26 15:41:50
7	Neil Harmon	386	Kotlin	2019-04-26 09:12:49
8	Merih Bora Poçan	449	Kotlin	2020-07-31 13:55:30
9	Adam Rankin	560	Kotlin	2023-04-25 00:38:37

#	User	Length	Language	Date
1	Martin Stensgård	646	OCaml	2021-01-01 05:32:10

#	User	Length	Language	Date
1	Ingemar Ragnemalm	104	Pascal	2018-02-17 09:16:35
2	David Connolly	113	Pascal	2022-04-11 23:50:25

#	User	Length	Language	Date
1	Renate	68	PHP	2021-06-15 08:26:23
2	Andre Wahyudi	217	PHP	2022-09-26 09:45:23

#	User	Length	Language	Date
1	Hakan Kjellerstrand	53	Prolog	2023-03-15 18:15:57
2	Andriy Zyevakov	56	Prolog	2018-11-15 19:31:54

#	User	Length	Language	Date
1	Hidden user	24	Python 2	2018-12-15 07:39:41
2	Gregory Zhang	34	Python 2	2017-10-14 20:19:07
3	Herman Karlsson	34	Python 2	2017-11-28 17:10:13
4	Johan Lyts	36	Python 2	2019-04-26 16:00:38
5	Thomas Feld	36	Python 2	2019-09-02 12:31:09
6	Guan Yang Ze	36	Python 2	2019-09-26 19:20:52
7	Vifill Sverrisson	39	Python 2	2018-09-30 19:05:44
8	Måns Magnusson	39	Python 2	2019-09-25 18:49:00
9	Maj Stenmark	39	Python 2	2019-09-25 22:03:50
10	William Gan	40	Python 2	2017-12-25 06:25:48

#	User	Length	Language	Date
1	Mattéo Delabre	31	Python 3	2023-01-19 03:32:45
2	Clement Oh	31	Python 3	2023-05-13 06:36:23
3	Alex Novikov	31	Python 3	2024-12-09 02:40:24
4	Aaruni Gupta	31	Python 3	2025-09-26 04:49:23
5	Krish Shah	31	Python 3	2025-09-26 05:06:09
6	Hidden user	32	Python 3	2018-12-15 07:26:27
7	Palma Rud Persson	32	Python 3	2021-04-22 20:03:16
8	Hidden user	32	Python 3	2021-06-23 12:56:49
9	Christofer Hallberg	32	Python 3	2022-08-20 23:06:34
10	Peter Peczalski	32	Python 3	2022-10-07 09:18:48

#	User	Length	Language	Date
1	Jinwoo Lee	141	Racket	2025-02-04 06:49:24

#	User	Length	Language	Date
1	Chenzhang Hu	21	Ruby	2024-12-06 14:24:20
2	Thomas Feld	22	Ruby	2022-11-04 14:36:03
3	Christian Pilegaard Cederquist	22	Ruby	2022-11-15 22:34:44
4	Oliver Ruden	22	Ruby	2023-02-06 01:09:01
5	Arduino Borguino	22	Ruby	2023-02-06 03:18:26
6	Hakan Kjellerstrand	22	Ruby	2023-03-15 18:21:36
7	Gustav Elmqvist	22	Ruby	2023-03-21 22:33:56
8	Alexander Bilde Pedersen	22	Ruby	2023-04-10 22:40:40
9	Alexandre Douard	22	Ruby	2023-09-13 15:48:21
10	Régis Hanol	27	Ruby	2022-01-09 16:25:03

#	User	Length	Language	Date
1	Vincent Lagerros	178	Rust	2025-02-06 21:06:05
2	Johan Larsson	193	Rust	2021-01-02 21:29:10
3	Nick Ivanov	206	Rust	2021-03-12 20:46:06
4	Freek van Keulen	210	Rust	2021-07-10 20:13:13
5	Pankajkumar Patro	213	Rust	2024-08-13 14:42:37
6	Hidden user	218	Rust	2021-12-02 15:57:24
7	Kok Dith	219	Rust	2021-08-01 12:22:35
8	Oskar Strömberg	237	Rust	2020-10-23 20:06:20
9	Bas Dirks	238	Rust	2022-01-15 22:56:32
10	Kartavya Vashishtha	241	Rust	2024-02-08 20:18:45

#	User	Length	Language	Date
1	Anton J Olsson	346	TypeScript	2023-08-22 01:50:07

Solution running time distribution