Problem I
10 Kinds of People — Problem Statistics

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Submissions	42734
Accepted submissions	8209
Submission ratio	19.21%
Authors	7358
Accepted authors	5051
Author ratio	68.65%

#	User	Runtime	Language	Date
1	Daniel Worsnup	0.01 s	C	2016-04-27 20:28:36
2	Hidden user	0.01 s	C	2016-05-27 22:00:52
3	Jack Rosenthal	0.01 s	C	2016-05-28 01:26:57
4	Gulliver Smith	0.01 s	C	2016-08-27 19:48:22
5	Mikael Magnusson	0.01 s	C	2017-01-19 14:50:38
6	Денис Соболев	0.01 s	C	2017-05-14 11:38:21
7	Jón Steinn Elíasson	0.01 s	C	2017-06-22 17:38:17
8	Hidden user	0.01 s	C	2017-07-10 15:14:28
9	Eoin Davey	0.01 s	C	2017-09-06 22:50:58
10	Shaun Stute	0.01 s	C	2017-09-06 23:22:40

#	User	Runtime	Language	Date
1	Holger Borum	0.04 s	C#	2019-04-26 12:43:14
2	Kristoffer Lindahl	0.05 s	C#	2018-08-19 21:08:41
3	Henrik Andersson	0.05 s	C#	2018-11-06 00:12:07
4	Apurv Parekh	0.05 s	C#	2019-02-21 02:51:39
5	Frankie Chen	0.05 s	C#	2019-07-19 00:36:22
6	Patrik Blomqvist	0.06 s	C#	2017-01-28 10:58:20
7	Владимир Хилько	0.06 s	C#	2022-06-12 16:27:24
8	Roxanne Baker	0.07 s	C#	2017-12-13 18:34:21
9	Dick Appel	0.07 s	C#	2018-05-24 15:06:38
10	Ronald van der Velden	0.07 s	C#	2018-06-02 15:21:49

#	User	Runtime	Language	Date
1	Per Persson	0.01 s	C++	2016-04-29 15:27:45
2	Lin Lee	0.01 s	C++	2016-07-20 07:03:47
3	Hubert Teo	0.01 s	C++	2016-08-11 06:53:45
4	Alex Dai	0.01 s	C++	2016-08-16 10:45:20
5	钟永发	0.01 s	C++	2016-08-25 16:20:55
6	Henrik Akira Karlsson	0.01 s	C++	2016-08-25 16:22:45
7	Zheng Chen	0.01 s	C++	2016-09-08 03:25:29
8	Hidden user	0.01 s	C++	2016-09-18 17:35:18
9	GP	0.01 s	C++	2016-12-23 11:09:55
10	Atli Fannar Franklín	0.01 s	C++	2017-04-26 21:48:55

#	User	Runtime	Language	Date
1	Ari Páll Agnarsson	0.57 s	Common Lisp	2021-03-06 01:43:44

#	User	Runtime	Language	Date
1	Javier Gómez Díaz	0.11 s	Crystal	2024-12-23 00:08:08

#	User	Runtime	Language	Date
1	Morten Clausen	0.83 s	F#	2020-12-28 19:00:45

#	User	Runtime	Language	Date
1	Adam Engsig	0.03 s	Go	2023-05-11 10:57:56
2	Nick Jarvis	0.04 s	Go	2024-03-20 22:20:12
3	Rajad	0.08 s	Go	2021-12-12 15:37:22
4	Shankara Narayanan Bangalore Ramalingam	0.09 s	Go	2025-07-01 09:14:55
5	Kev Burns	0.12 s	Go	2021-07-04 19:32:09
6	Nicklesh	0.12 s	Go	2021-12-12 15:39:28
7	Bastian Boger	0.28 s	Go	2017-02-07 18:57:08
8	Peter Mikkelsen	0.30 s	Go	2020-07-25 16:32:30
9	Norbert Voelker	0.34 s	Go	2021-02-12 01:31:29
10	Péter Szakszon	0.35 s	Go	2021-12-29 15:40:38

#	User	Runtime	Language	Date
1	Udo Stenzel	0.09 s	Haskell	2022-06-11 13:41:57
2	Isaac Arvestad	0.12 s	Haskell	2019-01-29 20:23:10
3	Lars Corbijn	0.17 s	Haskell	2018-09-16 18:56:16
4	Morten Lohne	0.18 s	Haskell	2022-10-27 16:20:30
5	Tomas Möre	0.26 s	Haskell	2019-01-31 22:29:52
6	Juan Miguel Vilar	0.27 s	Haskell	2020-06-05 11:44:47
7	Lars Brünjes	0.32 s	Haskell	2025-06-20 01:11:00
8	Hidden user	0.50 s	Haskell	2022-04-13 12:17:13
9	Dominik Bollmann	0.75 s	Haskell	2020-06-09 14:11:21
10	Zach Tschetter	0.75 s	Haskell	2021-11-02 01:15:54

#	User	Runtime	Language	Date
1	Emil Bak-Møller	0.13 s	Java	2020-03-24 22:47:17
2	Samuel Klingström	0.14 s	Java	2017-06-09 23:52:25
3	Duane Littleton	0.15 s	Java	2019-04-08 18:02:59
4	Crystal Sharpe	0.15 s	Java	2022-05-21 21:49:57
5	Asmus Tørsleff	0.16 s	Java	2022-03-11 18:01:16
6	Sven Rönnbäck	0.16 s	Java	2022-06-10 23:41:52
7	Trykozko Tomasz	0.17 s	Java	2018-10-07 15:12:23
8	Soo Qi Xuan Ian	0.17 s	Java	2020-11-05 15:41:21
9	Anton Khorin	0.18 s	Java	2018-01-31 06:02:16
10	Kristoffer Borgstrøm	0.18 s	Java	2020-10-28 20:00:52

#	User	Runtime	Language	Date
1	Rixin Yeetsho Dolma	0.24 s	JavaScript (Node.js)	2024-11-15 11:10:15
2	Duan	0.25 s	JavaScript (Node.js)	2025-06-18 16:13:08
3	Phil H	0.31 s	JavaScript (Node.js)	2023-04-14 20:20:51
4	jack	0.39 s	JavaScript (Node.js)	2024-12-27 15:01:43
5	Hans Falkenberg	0.54 s	JavaScript (Node.js)	2022-10-06 23:30:40
6	Hidden user	0.72 s	JavaScript (Node.js)	2019-05-20 19:35:29
7	Sigve Hortemo Sæther	0.77 s	JavaScript (Node.js)	2021-07-01 22:37:31
8	Chris Wong	0.78 s	JavaScript (Node.js)	2021-02-05 20:31:57
9	Hunter Tseng	0.83 s	JavaScript (Node.js)	2019-08-26 13:47:14

#	User	Runtime	Language	Date
1	Zachary DeStefano	0.13 s	JavaScript (SpiderMonkey)	2019-09-29 17:27:49
2	Michael Laszlo	0.14 s	JavaScript (SpiderMonkey)	2016-10-19 00:38:28
3	Bjørn Chr. Soltvedt	0.18 s	JavaScript (SpiderMonkey)	2022-07-31 16:11:40
4	Abdul Haliq	0.19 s	JavaScript (SpiderMonkey)	2016-05-20 17:00:19
5	Peter Kedemo	0.21 s	JavaScript (SpiderMonkey)	2016-06-02 19:11:40
6	Hans Falkenberg	0.32 s	JavaScript (SpiderMonkey)	2022-10-06 23:41:08
7	Adam Murphy	0.40 s	JavaScript (SpiderMonkey)	2017-11-03 15:00:53
8	Hà Minh Ngọc	0.44 s	JavaScript (SpiderMonkey)	2016-07-30 11:26:08
9	Christian Cederquist	0.49 s	JavaScript (SpiderMonkey)	2023-01-29 22:31:24
10	Jimmy Gustafsson	0.93 s	JavaScript (SpiderMonkey)	2022-09-03 22:56:45

#	User	Runtime	Language	Date
1	Noszály Csaba	0.86 s	Julia	2025-03-10 21:48:01

#	User	Runtime	Language	Date
1	Benjamin Ye	0.28 s	Kotlin	2022-02-15 23:23:29
2	Garrison Hatcher	0.33 s	Kotlin	2019-11-21 03:07:41
3	Przemysław Curzytek	0.38 s	Kotlin	2017-12-14 06:58:03
4	Jacob Huebner	0.41 s	Kotlin	2020-03-16 19:59:39
5	Adam Rankin	0.48 s	Kotlin	2023-09-25 17:34:44
6	Björn Holm	0.51 s	Kotlin	2018-10-04 14:09:08
7	Nicholas Johnson	0.52 s	Kotlin	2021-02-13 05:36:24
8	Chris Johnson	0.52 s	Kotlin	2023-09-12 03:58:39
9	Thanh Le	0.63 s	Kotlin	2021-07-21 20:51:10
10	Troy Warmboe	0.64 s	Kotlin	2018-10-20 06:04:16

#	User	Runtime	Language	Date
1	Haoxuan Yue	0.42 s	OCaml	2024-04-03 08:02:55

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.03 s	Pascal	2017-09-23 07:59:17

#	User	Runtime	Language	Date
1	Hermon Mulat	0.11 s	Python 2	2017-08-07 21:26:08
2	Ram Basnet	0.11 s	Python 2	2019-01-05 23:00:33
3	Ahmed Mohammed	0.11 s	Python 2	2021-06-20 21:24:58
4	Torstein Strømme	0.12 s	Python 2	2017-06-27 10:08:09
5	Francesco Silvestri	0.12 s	Python 2	2018-12-22 00:04:35
6	Jonathan Grimes	0.14 s	Python 2	2018-03-31 20:31:47
7	John Paul Hanson	0.16 s	Python 2	2018-11-17 20:58:40
8	Hidden user	0.16 s	Python 2	2019-01-06 13:59:48
9	Kasper Borys	0.17 s	Python 2	2017-02-27 04:17:56
10	Justus Karlsson	0.17 s	Python 2	2018-09-04 18:45:39

#	User	Runtime	Language	Date
1	Wouter Dijkstra	0.10 s	Python 3	2022-06-29 07:41:44
2	Max Wang	0.11 s	Python 3	2024-11-17 16:25:40
3	Kévin Dubrulle	0.13 s	Python 3	2024-11-29 11:59:24
4	Mikael Widenfalk	0.14 s	Python 3	2020-12-01 08:45:00
5	Hidden user	0.14 s	Python 3	2023-09-14 23:26:00
6	Jiaming Kong	0.14 s	Python 3	2025-06-23 11:06:44
7	Hao Yi	0.15 s	Python 3	2022-07-14 05:55:23
8	Nicolas Moreau de Lizoreux	0.15 s	Python 3	2025-06-09 12:38:38
9	Matija	0.15 s	Python 3	2025-07-01 12:31:48
10	Mads Overgård Henningsen	0.16 s	Python 3	2021-10-03 21:21:18

#	User	Runtime	Language	Date
1	John Rabaey	0.93 s	Ruby	2020-04-17 06:05:05

#	User	Runtime	Language	Date
1	Anthony Clays	0.01 s	Rust	2018-11-26 14:24:10
2	Rio	0.01 s	Rust	2023-07-26 15:45:59
3	Vincent Lagerros	0.01 s	Rust	2024-08-14 20:20:41
4	Julian Beaumont	0.02 s	Rust	2020-05-27 22:08:06
5	George Kuzler	0.02 s	Rust	2020-12-21 18:01:59
6	Artur Khuziakhmetov	0.02 s	Rust	2022-07-15 09:16:49
7	Hidden user	0.02 s	Rust	2023-10-06 05:36:53
8	cera	0.02 s	Rust	2025-05-22 21:55:45
9	Christofer Nolander	0.03 s	Rust	2018-11-20 19:12:27
10	Isak Jägberg	0.03 s	Rust	2019-04-27 09:15:29

#	User	Runtime	Language	Date
1	Joe Blower	0.03 s	Zig	2025-05-19 18:39:32

#	User	Length	Language	Date
1	Mattia Marziali	368	C	2024-04-07 17:44:35
2	Víctor Ramón Carrillo Quintero	956	C	2023-06-11 01:25:59
3	James Bang	983	C	2020-11-09 15:08:42
4	Hidden user	1075	C	2020-04-16 17:20:53
5	klimisnotmilk	1075	C	2023-02-23 03:41:07
6	Hilary K Mungania	1091	C	2019-06-13 13:34:20
7	Devioun Foskett	1091	C	2019-11-04 20:55:42
8	Rosy Sung	1108	C	2020-11-05 18:07:39
9	Ram Panda	1134	C	2019-05-01 06:56:02
10	Michael Christianto Wibisono	1152	C	2019-12-25 13:16:42

#	User	Length	Language	Date
1	Christian Nielsen	1937	C#	2024-03-22 09:31:10
2	Brian Scott	1978	C#	2018-09-12 16:56:26
3	Amos Rafael J. Cacha	2034	C#	2023-09-21 07:23:08
4	Juan Pablo Morales	2065	C#	2025-05-03 03:56:26
5	Kerry JALAL Modir	2068	C#	2024-05-13 15:01:52
6	Thomas Feld	2077	C#	2019-08-20 10:08:57
7	Alex Laurila	2131	C#	2022-06-17 01:06:58
8	Hidden user	2141	C#	2025-05-27 18:01:14
9	Tristan Close	2148	C#	2017-03-15 21:49:49
10	Wenlei Yu	2194	C#	2024-12-20 23:31:52

#	User	Length	Language	Date
1	Will Killian	655	C++	2023-08-02 19:45:19
2	Mercurious	683	C++	2022-11-09 13:03:28
3	OwO	765	C++	2021-01-26 14:25:44
4	Rumbin Lee	775	C++	2023-07-07 09:48:00
5	Chenghao Wang	795	C++	2023-02-18 06:02:19
6	Suso	797	C++	2023-04-16 19:27:21
7	Hidden user	810	C++	2022-04-21 05:51:35
8	Herman Karlsson	832	C++	2016-08-17 14:13:21
9	Sidney Xavier	852	C++	2017-07-18 01:00:00
10	Grayden Price	853	C++	2020-09-18 19:37:38

#	User	Length	Language	Date
1	Ari Páll Agnarsson	6792	Common Lisp	2021-03-06 01:36:15

#	User	Length	Language	Date
1	Javier Gómez Díaz	1506	Crystal	2024-12-23 00:14:24

#	User	Length	Language	Date
1	Morten Clausen	1757	F#	2020-12-28 19:00:45

#	User	Length	Language	Date
1	Aleksander Jan Mistewicz	1585	Go	2019-02-04 13:44:45
2	Krzysztof Gibuła	1727	Go	2021-02-23 19:42:35
3	Peter Mikkelsen	1791	Go	2020-07-25 16:32:30
4	Norbert Voelker	1949	Go	2021-02-12 01:31:29
5	Shankara Narayanan Bangalore Ramalingam	1969	Go	2025-07-01 09:14:55
6	Fabrice Vaillant	2099	Go	2016-09-15 00:25:41
7	Kev Burns	2404	Go	2021-07-04 17:46:30
8	Hidden user	2611	Go	2019-06-04 06:24:26
9	Nick Jarvis	2658	Go	2024-03-20 22:27:06
10	Rajad	2866	Go	2021-12-12 15:37:22

#	User	Length	Language	Date
1	Udo Stenzel	2041	Haskell	2022-06-11 13:41:57
2	Zach Tschetter	2255	Haskell	2021-11-02 01:15:54
3	Lars Corbijn	2437	Haskell	2018-09-16 18:56:16
4	Isaac Arvestad	3137	Haskell	2019-01-29 20:19:09
5	Hidden user	3155	Haskell	2022-04-13 11:46:09
6	Lars Brünjes	3654	Haskell	2025-06-20 01:11:00
7	Juan Miguel Vilar	3866	Haskell	2020-06-05 11:44:47
8	Stevenald Buscemiton	4057	Haskell	2023-08-20 08:17:07
9	Morten Lohne	5190	Haskell	2022-10-27 16:20:30
10	Dominik Bollmann	5325	Haskell	2020-06-09 14:11:21

#	User	Length	Language	Date
1	Jiru Xu	1144	Java	2017-02-15 07:23:40
2	Troels Bjerre Lund	1172	Java	2018-10-02 21:57:30
3	Kiên Nguyễn Tiến Trung	1321	Java	2017-02-12 05:59:25
4	Alex Coleman	1440	Java	2018-10-18 17:35:25
5	Brian Lee	1463	Java	2018-11-26 20:49:39
6	Malte Larsson	1481	Java	2018-03-26 19:30:47
7	Aaron Lamoreaux	1506	Java	2018-11-24 19:44:04
8	Jayson Rook	1511	Java	2016-09-30 04:53:31
9	Xuehui Chen	1518	Java	2018-07-08 18:57:37
10	Jerry Zhu	1521	Java	2018-03-14 21:47:15

#	User	Length	Language	Date
1	Sigve Hortemo Sæther	1427	JavaScript (Node.js)	2021-07-01 22:37:31
2	Duan	1765	JavaScript (Node.js)	2025-06-18 16:13:08
3	Phil H	2009	JavaScript (Node.js)	2023-04-14 20:20:51
4	Hidden user	2286	JavaScript (Node.js)	2019-05-20 19:35:29
5	jack	2325	JavaScript (Node.js)	2024-12-27 15:21:58
6	Rixin Yeetsho Dolma	2648	JavaScript (Node.js)	2024-11-15 11:10:15
7	Hans Falkenberg	2901	JavaScript (Node.js)	2022-10-06 23:30:40
8	Chris Wong	3146	JavaScript (Node.js)	2021-02-05 20:31:57
9	Hunter Tseng	3318	JavaScript (Node.js)	2019-08-26 13:47:14

#	User	Length	Language	Date
1	Christian Cederquist	1074	JavaScript (SpiderMonkey)	2023-01-29 22:31:24
2	Zachary DeStefano	1357	JavaScript (SpiderMonkey)	2019-09-29 17:27:49
3	Michael Laszlo	1768	JavaScript (SpiderMonkey)	2016-10-19 00:38:28
4	Peter Kedemo	1823	JavaScript (SpiderMonkey)	2016-06-02 19:11:40
5	Jimmy Gustafsson	1953	JavaScript (SpiderMonkey)	2022-09-03 22:56:45
6	Hà Minh Ngọc	2016	JavaScript (SpiderMonkey)	2016-07-30 06:10:39
7	Hans Falkenberg	2404	JavaScript (SpiderMonkey)	2022-10-06 23:59:40
8	Adam Murphy	2636	JavaScript (SpiderMonkey)	2017-11-03 14:37:49
9	Bjørn Chr. Soltvedt	3403	JavaScript (SpiderMonkey)	2022-07-31 16:11:40
10	Abdul Haliq	3613	JavaScript (SpiderMonkey)	2016-05-20 17:00:19

#	User	Length	Language	Date
1	Noszály Csaba	529	Julia	2025-03-10 22:02:13

#	User	Length	Language	Date
1	Peter Mikkelsen	1323	Kotlin	2020-07-25 01:40:46
2	Dmitry Shostak	1391	Kotlin	2019-08-30 09:57:00
3	Ali M. Nekoh	1749	Kotlin	2025-05-01 13:07:09
4	Nicholas Johnson	1809	Kotlin	2020-01-30 20:17:03
5	Simon Weidmann	1851	Kotlin	2023-06-10 21:36:58
6	Genesis Ighalo	1928	Kotlin	2024-05-07 01:04:20
7	Chris Johnson	2020	Kotlin	2023-09-12 03:58:39
8	Jacob Huebner	2112	Kotlin	2020-03-16 19:57:10
9	rexoy87980	2278	Kotlin	2020-10-23 20:42:17
10	Clas Veibäck	2298	Kotlin	2025-03-11 08:25:36

#	User	Length	Language	Date
1	Haoxuan Yue	1776	OCaml	2024-04-03 08:02:55

#	User	Length	Language	Date
1	Ingemar Ragnemalm	5994	Pascal	2017-09-23 07:59:17

#	User	Length	Language	Date
1	Bryon Tjanaka	540	Python 2	2019-04-24 06:36:12
2	Story Poo	819	Python 2	2022-07-15 02:13:21
3	hk	819	Python 2	2022-10-22 13:03:58
4	Alex Lewin	821	Python 2	2019-10-17 02:37:17
5	Andreas Björklund	843	Python 2	2020-03-13 19:12:50
6	Baron Young	847	Python 2	2022-07-13 10:19:58
7	Yang Li	847	Python 2	2018-05-05 11:48:11
8	Meher Béjaoui	847	Python 2	2018-11-16 23:12:03
9	Tom Boyd	847	Python 2	2018-11-30 16:17:45
10	Nathan Read	847	Python 2	2019-04-29 02:00:19

#	User	Length	Language	Date
1	Erik Åman	374	Python 3	2022-12-25 17:43:53
2	Marshall D Feng	429	Python 3	2023-08-02 22:24:41
3	Charles Ancheta	456	Python 3	2023-03-18 03:37:43
4	Tobias Glimmerfors	487	Python 3	2022-08-23 12:02:57
5	Michael Goldwasser	508	Python 3	2023-11-21 01:36:49
6	Kévin Dubrulle	604	Python 3	2025-03-04 17:55:37
7	Ahmed Chamseddine	626	Python 3	2024-03-13 14:09:40
8	David Llorens	643	Python 3	2023-07-29 21:27:32
9	Thibault Raffaillac	652	Python 3	2021-03-01 15:09:59
10	Kelly Dance	682	Python 3	2025-02-04 01:22:10

#	User	Length	Language	Date
1	John Rabaey	1856	Ruby	2020-04-17 06:05:05

#	User	Length	Language	Date
1	Artur Khuziakhmetov	1787	Rust	2022-07-15 09:16:49
2	Hidden user	1918	Rust	2023-10-06 05:36:53
3	Hidden user	2059	Rust	2020-02-06 18:15:42
4	Adam Vandolder	2102	Rust	2019-06-24 07:19:34
5	Alice Ryhl	2155	Rust	2022-03-11 16:48:03
6	Vincent Lagerros	2270	Rust	2024-04-05 22:01:35
7	Adrien Coulier	2294	Rust	2020-04-11 10:47:29
8	Schuyler Tay	2344	Rust	2020-06-23 16:52:15
9	Alexander Skovsende	2362	Rust	2022-03-11 17:54:57
10	Hidden user	2367	Rust	2021-12-13 19:29:09

#	User	Length	Language	Date
1	Joe Blower	3505	Zig	2025-05-19 18:39:32

Solution running time distribution