Problem A
T9 Spelling — Problem Statistics

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Submissions	22984
Accepted submissions	9415
Submission ratio	40.96%
Authors	7347
Full solves [?]	6918
Full solve Ratio	94.16%

#	User	Runtime	Language	Date
1	Danny Robinson	0.10 s	Bash	2023-10-31 09:10:42

#	User	Runtime	Language	Date
1	Tommy Ivarsson	0.02 s	C#	2015-04-21 13:37:31
2	Marcin Dudek	0.02 s	C#	2015-09-04 22:44:03
3	Rasmus Brants	0.02 s	C#	2017-03-28 15:01:43
4	Faisal Rahman	0.02 s	C#	2017-11-08 09:16:04
5	Andriy Zyevakov	0.02 s	C#	2019-05-29 18:46:23
6	Rickard Bemm	0.02 s	C#	2022-02-09 16:27:39
7	Karoline Øijorden	0.02 s	C#	2022-02-24 12:13:51
8	Joe Amenta	0.03 s	C#	2014-12-07 04:39:03
9	masosz	0.03 s	C#	2015-02-01 18:55:43
10	Christopher Daly	0.03 s	C#	2015-07-15 21:23:34

#	User	Runtime	Language	Date
1	Patrick Bahr	0.04 s	F#	2021-02-14 20:55:15
2	Jacob Harris Cryer Kragh	0.05 s	F#	2022-07-01 16:06:38

#	User	Runtime	Language	Date
1	Sushil Koirala	0.00 s	Go	2024-10-23 09:01:34
2	LonelyAkshay	0.00 s	Go	2025-08-09 18:42:29
3	Jimmy Nejtron	0.01 s	Go	2023-09-09 13:11:38
4	Norbert Voelker	0.02 s	Go	2021-04-14 15:58:54
5	Albert Rise Nielsen	0.03 s	Go	2021-08-31 17:31:35
6	Andreas Gottschalk Krath	0.04 s	Go	2022-07-06 21:16:58
7	Sergey Jakobsen	0.07 s	Go	2022-01-15 00:06:33
8	Krzysztof Gibuła	0.08 s	Go	2021-03-20 18:24:03
9	dick move	0.08 s	Go	2021-05-28 13:19:46
10	Péter Szakszon	0.08 s	Go	2021-12-31 10:13:28

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Haskell	2015-01-07 11:59:57
2	Markus Läll	0.01 s	Haskell	2015-02-18 11:01:32
3	Lars Tveito	0.01 s	Haskell	2015-07-20 16:24:04
4	Hidden user	0.01 s	Haskell	2015-10-04 20:48:45
5	姚锦铭	0.01 s	Haskell	2016-11-21 17:00:28
6	John Grzechowiak	0.01 s	Haskell	2017-02-14 23:59:29
7	César Antonio Carvajal de la Haza	0.01 s	Haskell	2017-04-23 12:05:36
8	Antony Lee	0.01 s	Haskell	2017-09-13 16:52:57
9	Birk Tjelmeland	0.01 s	Haskell	2017-12-26 14:49:51
10	Dario Vidas	0.01 s	Haskell	2019-06-16 03:29:10

#	User	Runtime	Language	Date
1	Clement Oh	0.06 s	Java	2022-07-19 08:46:39
2	Lee Heng Sheng	0.06 s	Java	2024-05-05 10:16:47
3	Lee Min Rui	0.06 s	Java	2024-09-06 01:18:37
4	Jaslyn Tay Shi Hui	0.06 s	Java	2024-09-06 03:10:22
5	Yew Rui Gerwayne	0.06 s	Java	2024-09-06 03:34:12
6	Tai Zong Jie	0.06 s	Java	2024-09-06 03:40:44
7	Ryan Darius Lim	0.06 s	Java	2024-09-06 05:51:37
8	Yu Yihan Allexis	0.06 s	Java	2024-09-06 06:48:01
9	Hidden user	0.06 s	Java	2024-09-06 09:27:32
10	Wong Ji Wei Xylia	0.06 s	Java	2024-09-06 15:02:44

#	User	Runtime	Language	Date
1	Muhammad	0.05 s	JavaScript (Node.js)	2024-10-28 10:53:44
2	Hidden user	0.06 s	JavaScript (Node.js)	2024-09-10 17:36:39
3	Gurpartap Singh Bhatti	0.07 s	JavaScript (Node.js)	2019-03-18 05:58:28
4	Sander Hellesø	0.08 s	JavaScript (Node.js)	2019-04-21 20:19:36
5	Ralf Leistad	0.08 s	JavaScript (Node.js)	2019-04-27 06:45:54
6	Ephrem Demelash	0.10 s	JavaScript (Node.js)	2022-11-24 08:09:28
7	Sofonias Abathun	0.10 s	JavaScript (Node.js)	2022-11-24 08:27:04
8	Greg Gorlen	0.10 s	JavaScript (Node.js)	2023-02-17 01:04:47
9	Lioul Behailu Desta	0.15 s	JavaScript (Node.js)	2022-12-05 19:06:36
10	Mohamed Hosny Ahmed	0.43 s	JavaScript (Node.js)	2019-11-05 13:57:31

#	User	Runtime	Language	Date
1	Peter Kedemo	0.02 s	JavaScript (SpiderMonkey)	2015-12-21 00:26:47
2	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2016-02-09 21:04:49
3	Ryan Huang	0.03 s	JavaScript (SpiderMonkey)	2016-02-24 19:43:08
4	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-02-06 12:41:51
5	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2023-05-02 22:07:41
6	Jimmy Gustafsson	0.03 s	JavaScript (SpiderMonkey)	2024-07-13 17:37:18
7	Evan Magill	0.03 s	JavaScript (SpiderMonkey)	2024-09-08 05:00:29
8	Nicklas Utgaard	0.04 s	JavaScript (SpiderMonkey)	2021-04-24 13:24:58
9	Alexander Vestin	0.05 s	JavaScript (SpiderMonkey)	2022-10-16 20:45:13
10	Christian Pilegaard Cederquist	0.05 s	JavaScript (SpiderMonkey)	2022-11-13 00:51:01

#	User	Runtime	Language	Date
1	Timothy Gaede	0.68 s	Julia	2024-03-23 06:48:38

#	User	Runtime	Language	Date
1	Jacob Huebner	0.18 s	Kotlin	2020-03-18 00:33:07
2	Johnny Baloney	0.20 s	Kotlin	2021-12-08 15:00:42
3	Yang Tang	0.22 s	Kotlin	2023-07-30 04:22:43
4	Adam Rankin	0.22 s	Kotlin	2023-08-07 18:39:15
5	Dmitry Shostak	0.24 s	Kotlin	2018-08-21 09:41:30
6	Neil Harmon	0.25 s	Kotlin	2019-05-06 08:57:12
7	Dayan Ruben Gonzalez	0.25 s	Kotlin	2020-10-05 02:17:59
8	Albert Pala	0.26 s	Kotlin	2021-07-12 11:10:59
9	James WIlliams	0.30 s	Kotlin	2020-12-21 06:51:43
10	Chris Johnson	0.31 s	Kotlin	2023-04-20 03:59:27

#	User	Runtime	Language	Date
1	Drake Schram	0.02 s	Lua	2025-02-24 19:06:21

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2017-08-31 14:14:35
2	Ingemar Ragnemalm	0.00 s	Pascal	2022-09-11 07:39:57

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-05-24 20:29:34
2	Alessandro Pasqualini	0.02 s	PHP	2019-01-13 12:35:00
3	Andre Wahyudi	0.02 s	PHP	2022-10-21 03:58:46
4	Jonas Lindenskov Nielsen	0.04 s	PHP	2019-10-08 12:56:17
5	Petr Trofimov	0.04 s	PHP	2021-04-22 09:08:16

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.16 s	Prolog	2023-02-12 22:37:27

#	User	Runtime	Language	Date
1	Gustaf Waldemarson	0.03 s	Python 2	2015-01-19 17:25:52
2	Shrenik Jain	0.03 s	Python 2	2015-03-30 20:54:14
3	Christofer Ohlsson	0.03 s	Python 2	2015-04-10 11:11:25
4	Team Baud	0.03 s	Python 2	2015-04-16 07:55:24
5	Greg Hamerly	0.03 s	Python 2	2015-05-09 00:47:27
6	Erik Odenman	0.03 s	Python 2	2015-05-12 20:53:23
7	Mohamed Badawy	0.03 s	Python 2	2015-06-27 13:00:24
8	Fredrik Carlsen	0.03 s	Python 2	2015-07-26 12:23:10
9	Nick Wu	0.03 s	Python 2	2015-10-14 00:18:25
10	Hans Rusten	0.03 s	Python 2	2015-10-22 09:56:39

#	User	Runtime	Language	Date
1	Nathaniel Gibson	0.02 s	Python 3	2015-07-02 17:16:23
2	David Valleau	0.02 s	Python 3	2015-07-03 17:16:33
3	Fredrik Carlsen	0.02 s	Python 3	2015-07-26 12:23:25
4	Thais Minet	0.02 s	Python 3	2016-03-29 17:03:51
5	Antoine Paret	0.02 s	Python 3	2017-01-27 15:43:05
6	Sebastian Fredriksson Bernholtz	0.02 s	Python 3	2017-05-21 12:07:18
7	Andrew Fales	0.02 s	Python 3	2017-11-02 16:24:31
8	Michelle Sandström	0.02 s	Python 3	2017-11-19 22:38:49
9	Hidden user	0.02 s	Python 3	2018-02-11 22:53:50
10	Bill Alger	0.02 s	Python 3	2018-04-04 19:40:36

#	User	Runtime	Language	Date
1	Gerry Hall	0.05 s	Ruby	2016-03-27 06:14:09
2	Erik Rydbert	0.05 s	Ruby	2016-07-15 11:21:34
3	Macdara mac an tSionnaigh	0.06 s	Ruby	2019-10-03 02:22:43
4	Wade Westfall	0.07 s	Ruby	2016-04-12 17:47:27
5	Andrei Avram	0.07 s	Ruby	2019-08-22 16:34:21
6	Bharath Kumar Sunkara	0.07 s	Ruby	2019-09-26 06:50:56
7	Kainikireddy Venkata Pavan Kumar Reddy	0.07 s	Ruby	2019-09-26 07:20:26
8	S.P.Krishna Babu	0.07 s	Ruby	2019-09-26 07:20:46
9	Patrick Elsen	0.07 s	Ruby	2022-09-11 12:21:10
10	Noah Hessen Bjerke	0.08 s	Ruby	2022-11-24 01:14:50

#	User	Runtime	Language	Date
1	Joe Blower	0.00 s	Zig	2025-05-18 16:15:16

#	User	Length	Language	Date
1	Danny Robinson	294	Bash	2023-10-31 09:10:42

#	User	Length	Language	Date
1	Martin Blom	407	C	2023-10-17 19:23:44
2	林秉軒	568	C	2016-12-25 13:01:08
3	Thibault Raffaillac	636	C	2016-06-01 16:13:24
4	Chandan Singh	708	C	2015-05-31 10:09:49
5	Mustapha Slimani	717	C	2021-03-16 18:20:31
6	Nguyen Cong Thuyen	744	C	2016-09-10 03:44:07
7	Lê Khanh	745	C	2016-06-21 16:17:15
8	Ximun Castoreo	793	C	2020-09-21 14:14:28
9	winnie the pooh	806	C	2021-06-05 03:32:08
10	Lee Geng Yu	808	C	2018-01-08 06:17:57

#	User	Length	Language	Date
1	Esty Crow	835	C#	2025-05-16 05:30:50
2	clarence chen	864	C#	2025-05-16 17:07:12
3	Göran Andersson	924	C#	2022-05-09 18:25:51
4	Daniel Doran	977	C#	2016-10-06 01:26:55
5	Mark Meysenburg	1051	C#	2023-01-29 20:15:58
6	Doug Goodman	1128	C#	2018-06-01 21:57:55
7	Գոռ Բաղդասարյան	1223	C#	2024-06-14 06:08:29
8	Hung Le Van	1287	C#	2016-06-19 12:05:57
9	Mạnh Hoàn	1301	C#	2016-06-24 05:52:54
10	Nguyễn Trọng Hà	1301	C#	2016-06-24 12:03:14

#	User	Length	Language	Date
1	Amir Shams	531	C++	2015-06-24 12:16:29
2	Abid Falih	564	C++	2016-08-08 18:33:56
3	Yeung Man Tsung	587	C++	2022-11-20 06:30:39
4	Gia Bao Ho	588	C++	2016-06-13 10:23:50
5	Tran Thanh Quang	593	C++	2017-10-10 06:36:15
6	Spynder	594	C++	2023-09-07 13:58:10
7	Antonio Molina Lovett	606	C++	2016-08-07 06:46:53
8	Tan Teong Seng	617	C++	2020-09-19 15:13:22
9	Yury Kuvshynov	620	C++	2021-09-22 13:23:44
10	Nguyen Thanh	636	C++	2018-05-23 02:41:59

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1168	F#	2022-07-01 16:06:38
2	Patrick Bahr	2531	F#	2021-02-14 20:55:15

#	User	Length	Language	Date
1	Sergey Jakobsen	740	Go	2022-01-15 00:06:33
2	LonelyAkshay	866	Go	2025-08-09 18:39:45
3	Scott Dauer	882	Go	2020-09-09 19:51:46
4	Anthony Alves	997	Go	2017-01-22 05:03:40
5	Michal Sekletár	1019	Go	2015-07-05 21:35:46
6	Việt Hà Nguyễn	1051	Go	2016-06-19 01:45:49
7	Krzysztof Gibuła	1064	Go	2021-03-20 18:24:03
8	Jimmy Nejtron	1094	Go	2023-09-09 13:11:38
9	Sushil Koirala	1169	Go	2024-10-23 09:01:34
10	Andreas Gottschalk Krath	1239	Go	2022-07-06 21:16:58

#	User	Length	Language	Date
1	Li Jun	634	Haskell	2023-07-02 15:59:08
2	Birk Tjelmeland	639	Haskell	2017-12-26 14:49:51
3	Lars Tveito	757	Haskell	2015-07-20 16:24:04
4	Monique Oliveira	773	Haskell	2021-09-10 17:13:29
5	Hidden user	775	Haskell	2019-08-24 19:15:46
6	Antony Lee	811	Haskell	2017-09-13 16:52:57
7	Andrés Marzal Varó	847	Haskell	2020-10-10 07:33:46
8	Joe Little	893	Haskell	2024-11-15 10:46:30
9	Øyvind Almli	912	Haskell	2021-09-07 22:36:02
10	Steinar Simonnes	913	Haskell	2024-01-31 14:32:06

#	User	Length	Language	Date
1	Ryan L.	741	Java	2018-04-10 03:20:16
2	Kurtis Van Gent	746	Java	2016-02-23 16:13:59
3	Doug Goodman	752	Java	2016-06-08 16:52:07
4	daffa fathani adila	755	Java	2021-02-05 10:08:20
5	Brendon Zhang	783	Java	2017-02-07 00:02:05
6	Jesse Ventura	795	Java	2016-10-06 01:12:42
7	Andrew Heng	821	Java	2015-12-03 01:52:33
8	Guo Xiaoyang	821	Java	2019-09-02 07:14:13
9	Anton Sandin	828	Java	2022-04-30 14:44:58
10	Udit Sanghi	832	Java	2021-07-26 15:29:12

#	User	Length	Language	Date
1	Greg Gorlen	740	JavaScript (Node.js)	2023-02-17 01:04:47
2	Lioul Behailu Desta	843	JavaScript (Node.js)	2022-12-05 19:06:36
3	Antoine Bauri	917	JavaScript (Node.js)	2021-02-19 20:32:10
4	Hidden user	1161	JavaScript (Node.js)	2023-09-12 03:18:12
5	Gurpartap Singh Bhatti	1235	JavaScript (Node.js)	2019-03-18 06:00:45
6	Ephrem Demelash	1295	JavaScript (Node.js)	2022-11-24 08:09:28
7	Nick Ivanov	1423	JavaScript (Node.js)	2020-03-10 00:00:00
8	Mohamed Hosny Ahmed	1439	JavaScript (Node.js)	2019-11-05 13:57:31
9	Andoko Chandra	1446	JavaScript (Node.js)	2020-10-07 08:28:33
10	Chris Wong	1457	JavaScript (Node.js)	2021-02-06 16:17:57

#	User	Length	Language	Date
1	Jimmy Gustafsson	276	JavaScript (SpiderMonkey)	2024-07-13 17:37:18
2	Christian Pilegaard Cederquist	391	JavaScript (SpiderMonkey)	2022-11-13 00:51:01
3	Peter Kedemo	604	JavaScript (SpiderMonkey)	2015-12-21 00:26:47
4	Zach Tschetter	654	JavaScript (SpiderMonkey)	2023-05-02 22:07:41
5	Bjørn Chr. Soltvedt	680	JavaScript (SpiderMonkey)	2016-02-09 21:04:49
6	Evan Magill	759	JavaScript (SpiderMonkey)	2024-09-08 05:00:29
7	Peter Menyes	763	JavaScript (SpiderMonkey)	2021-02-06 12:41:51
8	Ryan Huang	877	JavaScript (SpiderMonkey)	2016-02-24 19:43:08
9	Nicklas Utgaard	1008	JavaScript (SpiderMonkey)	2021-04-24 13:24:58
10	Alexander Vestin	1269	JavaScript (SpiderMonkey)	2022-10-16 20:45:13

#	User	Length	Language	Date
1	Timothy Gaede	1825	Julia	2024-03-23 06:48:38

#	User	Length	Language	Date
1	Yang Tang	670	Kotlin	2023-07-30 04:22:43
2	Chris Johnson	809	Kotlin	2023-04-20 03:59:27
3	Dayan Ruben Gonzalez	814	Kotlin	2020-10-05 02:17:59
4	Dmitry Shostak	823	Kotlin	2018-08-21 09:56:19
5	Emil Wihlander	835	Kotlin	2023-07-27 12:59:08
6	Ashish Singh	871	Kotlin	2023-01-31 13:22:58
7	Albert Pala	895	Kotlin	2021-07-12 11:10:59
8	Adam Rankin	920	Kotlin	2023-08-07 18:39:15
9	Mike Menendez	962	Kotlin	2019-05-02 01:18:08
10	Magnus Tønnessen	1024	Kotlin	2021-09-06 13:32:11

#	User	Length	Language	Date
1	Drake Schram	2902	Lua	2025-02-24 19:06:21

#	User	Length	Language	Date
1	Ingemar Ragnemalm	996	Pascal	2022-09-11 07:39:57
2	David Connolly	6060	Pascal	2017-08-31 14:14:35

#	User	Length	Language	Date
1	Jonas Lindenskov Nielsen	748	PHP	2019-11-23 13:15:52
2	Renate	918	PHP	2021-05-24 20:29:34
3	Petr Trofimov	967	PHP	2021-04-22 09:08:16
4	Alessandro Pasqualini	1360	PHP	2019-01-13 12:35:00
5	Andre Wahyudi	2020	PHP	2022-10-21 03:58:46

#	User	Length	Language	Date
1	Hakan Kjellerstrand	934	Prolog	2023-02-12 22:37:27

#	User	Length	Language	Date
1	Thomas Feld	250	Python 2	2019-08-19 14:08:03
2	Andreas Björklund	374	Python 2	2021-03-24 15:24:47
3	Erik Odenman	394	Python 2	2015-05-12 20:53:23
4	Paweł Kordowski	394	Python 2	2015-11-29 10:15:00
5	Jesper Öqvist	404	Python 2	2018-10-22 22:51:28
6	Mohamed Badawy	410	Python 2	2015-06-27 13:00:24
7	Haggai Liu	462	Python 2	2016-12-28 10:32:46
8	Daniel Strizhevsky	467	Python 2	2016-09-17 01:54:00
9	Alex Van Keulen	478	Python 2	2018-02-08 04:46:38
10	Johan Lyts	492	Python 2	2019-07-04 19:32:42

#	User	Length	Language	Date
1	Adam Levav	186	Python 3	2023-01-24 23:34:09
2	Gustav Elmqvist	202	Python 3	2023-02-13 18:59:41
3	Thomas Feld	222	Python 3	2022-11-04 13:27:47
4	Hidden user	227	Python 3	2025-09-23 09:42:13
5	Charles Ancheta	232	Python 3	2023-04-07 20:07:23
6	Henri Lemoine	240	Python 3	2022-09-09 19:42:40
7	Joel Niemelä	263	Python 3	2025-05-03 22:08:37
8	Ahmed Chamseddine	271	Python 3	2023-10-19 12:52:28
9	Magnus Hokland Hegdahl	278	Python 3	2023-11-15 23:46:21
10	Andrew Mackenzie	284	Python 3	2022-09-07 04:01:41

#	User	Length	Language	Date
1	Thomas Feld	168	Ruby	2023-05-22 12:55:25
2	Patrick Elsen	282	Ruby	2022-09-11 12:21:10
3	Daniel Harder	336	Ruby	2018-09-01 02:35:33
4	Alexander Bilde Pedersen	444	Ruby	2023-09-19 15:56:26
5	Noah Hessen Bjerke	550	Ruby	2022-11-24 01:14:50
6	Gerry Hall	567	Ruby	2016-03-27 06:14:09
7	Macdara mac an tSionnaigh	635	Ruby	2019-10-03 02:22:43
8	Erik Rydbert	697	Ruby	2016-07-15 11:21:34
9	Andrei Avram	790	Ruby	2019-08-22 16:34:21
10	Bharath Kumar Sunkara	790	Ruby	2019-09-26 06:50:56

#	User	Length	Language	Date
1	Vincent Lagerros	850	Rust	2024-12-03 19:28:22
2	Pankajkumar Patro	1306	Rust	2025-04-06 18:39:26
3	David Vinje	1324	Rust	2023-09-13 10:37:05
4	David Zacek	1372	Rust	2021-05-21 15:16:46
5	Constantin Buruiana	1422	Rust	2024-09-08 22:44:48
6	Emil Dichmann	1426	Rust	2025-09-07 09:10:09
7	David Rasch	1516	Rust	2020-10-23 12:09:50
8	Louis Bouchard	1552	Rust	2024-09-08 06:06:12
9	Bas Dirks	1556	Rust	2022-01-02 17:51:45
10	Selim Yetkin	1599	Rust	2023-09-15 10:36:38

#	User	Length	Language	Date
1	Joe Blower	2091	Zig	2025-05-18 16:15:16

Solution running time distribution