Problem U
A List Game — Problem Statistics

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Submissions	17648
Accepted submissions	5323
Submission ratio	30.16%
Authors	5261
Full solves [?]	4416
Full solve Ratio	83.94%

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Ada	2024-07-07 23:52:22

#	User	Runtime	Language	Date
1	Mitchell Johnstone	0.03 s	APL	2023-08-03 18:25:13
2	Thomas Feld	0.03 s	APL	2023-08-07 12:02:00

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Bash	2023-09-18 14:38:40
2	Thomas Feld	0.01 s	Bash	2023-09-28 10:03:33
3	Simon Schwartz	0.01 s	Bash	2025-04-02 17:23:01

#	User	Runtime	Language	Date
1	Marek	0.02 s	C#	2013-09-15 11:09:20
2	John Nowaka	0.02 s	C#	2013-09-16 22:00:29
3	Tomasz Masternak	0.02 s	C#	2013-09-24 17:17:56
4	grabarz	0.02 s	C#	2014-09-21 11:44:45
5	Marcin Dudek	0.02 s	C#	2014-09-29 23:58:35
6	Markus Larsson	0.02 s	C#	2014-10-03 20:36:50
7	Bryan Shiffman	0.02 s	C#	2014-10-03 22:51:27
8	masosz	0.02 s	C#	2015-02-17 22:43:31
9	Mads Storm Hansen	0.02 s	C#	2015-07-20 09:11:21
10	Jonas S	0.02 s	C#	2015-08-25 13:58:01

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-06-07 18:14:25

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-09-28 14:31:26

#	User	Runtime	Language	Date
1	Fustiki Scuria	0.01 s	D	2024-09-13 05:30:47

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2023-03-22 19:17:07

#	User	Runtime	Language	Date
1	Gabe Stang	0.00 s	Go	2023-08-25 03:10:49
2	Suka Isnaini	0.00 s	Go	2023-12-15 16:22:57
3	Logan Roberts	0.00 s	Go	2024-03-11 20:58:22
4	Chris Vilches	0.00 s	Go	2024-08-17 15:05:08
5	Joas Haunstrup	0.01 s	Go	2022-08-24 22:11:38
6	Markus Mathiasen	0.02 s	Go	2022-08-22 14:33:35
7	Rickard Bemm	0.02 s	Go	2023-02-21 22:05:21
8	Krzysztof Gibuła	0.07 s	Go	2019-05-03 23:43:08
9	Lucas Towers	0.07 s	Go	2020-10-04 01:38:01
10	Marcin Dudek	0.08 s	Go	2016-02-16 23:24:08

#	User	Runtime	Language	Date
1	Issa Issack	0.04 s	Java	2024-08-07 03:06:11
2	Hussin Suleiman	0.04 s	Java	2024-10-05 14:54:15
3	Guangyi Zhou	0.04 s	Java	2024-12-01 14:51:53
4	yys	0.04 s	Java	2025-02-20 19:08:23
5	Sven Rönnbäck	0.04 s	Java	2025-03-15 11:03:15
6	Joshua Chin	0.04 s	Java	2025-04-29 17:04:20
7	Rene Argento	0.04 s	Java	2025-07-18 13:11:25
8	Christopher Wiratman	0.04 s	Java	2025-09-01 05:02:23
9	Simon Klein	0.05 s	Java	2011-10-02 20:47:07
10	Erik Odenman	0.05 s	Java	2011-10-04 09:20:20

#	User	Runtime	Language	Date
1	Pelle	0.04 s	JavaScript (Node.js)	2024-04-15 21:36:31
2	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-15 09:01:53
3	Carles Bordas	0.08 s	JavaScript (Node.js)	2023-07-12 19:18:27
4	Samuel Högfeldt	0.09 s	JavaScript (Node.js)	2022-07-08 11:35:09
5	Nikola Stojkovski	0.09 s	JavaScript (Node.js)	2022-08-12 15:22:18
6	Will Cosley	0.40 s	JavaScript (Node.js)	2025-03-24 19:06:32
7	José Lucas	0.42 s	JavaScript (Node.js)	2019-12-17 23:50:34
8	Domonic Tafoya	0.42 s	JavaScript (Node.js)	2020-03-03 05:00:10
9	Alvaro Mamani Limachi	0.42 s	JavaScript (Node.js)	2020-04-23 19:18:59
10	Mayra Bautista	0.42 s	JavaScript (Node.js)	2020-04-26 08:12:44

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	JavaScript (SpiderMonkey)	2014-11-23 10:27:59
2	Hidden user	0.01 s	JavaScript (SpiderMonkey)	2014-11-26 15:55:39
3	Nathan O'Brien	0.01 s	JavaScript (SpiderMonkey)	2015-05-21 18:17:41
4	Jan Järfalk	0.01 s	JavaScript (SpiderMonkey)	2015-09-08 14:13:52
5	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-02-15 03:46:39
6	Heron Chavez	0.01 s	JavaScript (SpiderMonkey)	2016-08-30 21:54:01
7	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-07 22:32:42
8	Andrew Gemmel	0.01 s	JavaScript (SpiderMonkey)	2016-10-29 22:37:32
9	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-14 16:43:47
10	Tú Huỳnh	0.01 s	JavaScript (SpiderMonkey)	2017-09-28 12:10:07

#	User	Runtime	Language	Date
1	Hidden user	0.42 s	Julia	2025-02-16 20:25:21
2	Timothy Gaede	0.61 s	Julia	2024-04-24 14:43:30

#	User	Runtime	Language	Date
1	Thanh Le	0.11 s	Kotlin	2021-07-14 02:26:14
2	Jacob Huebner	0.13 s	Kotlin	2020-04-27 02:45:05
3	Chelsea Hoernemann	0.13 s	Kotlin	2022-11-15 22:51:39
4	Hidden user	0.16 s	Kotlin	2023-06-09 11:06:14
5	Dmitry Shostak	0.17 s	Kotlin	2018-08-23 10:59:48
6	Dayan Ruben Gonzalez	0.17 s	Kotlin	2020-10-09 05:41:08
7	Jan Kowalski	0.17 s	Kotlin	2022-07-06 16:32:26
8	Adam Rankin	0.19 s	Kotlin	2023-04-24 20:21:10
9	Nicholas Johnson	0.20 s	Kotlin	2020-03-07 06:06:01
10	Torbjørn Tessem	0.21 s	Kotlin	2023-08-16 17:06:17

#	User	Runtime	Language	Date
1	Markus Petersson	0.00 s	Lua	2025-10-23 22:18:50

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Nim	2025-05-20 09:50:48

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	OCaml	2024-06-06 12:06:47
2	Joel Newman	0.02 s	OCaml	2023-11-23 02:37:02

#	User	Runtime	Language	Date
1	屏翰 张	0.00 s	Odin	2025-11-13 13:54:14

#	User	Runtime	Language	Date
1	Trường Nhật Dương	0.00 s	Pascal	2018-01-04 08:40:10
2	Bách Nguyễn	0.00 s	Pascal	2018-01-05 14:16:05
3	Nhật Quang	0.30 s	Pascal	2018-01-04 09:09:35

#	User	Runtime	Language	Date
1	Saito Ta	0.00 s	Perl	2024-04-18 11:09:05

#	User	Runtime	Language	Date
1	Peter Toso	0.01 s	PHP	2025-05-16 07:56:49

#	User	Runtime	Language	Date
1	Jacob Wejendorp	0.03 s	Python 2	2013-10-07 00:22:26
2	Ehsan Kia	0.03 s	Python 2	2013-10-13 21:55:08
3	Andreas Serra	0.03 s	Python 2	2014-04-10 18:26:26
4	Gustaf Waldemarson	0.03 s	Python 2	2014-08-12 19:24:14
5	Hidden user	0.03 s	Python 2	2014-10-26 20:17:21
6	Hidden user	0.03 s	Python 2	2014-11-25 18:23:35
7	Jonas Kylling	0.03 s	Python 2	2015-02-15 15:07:19
8	Hidden user	0.03 s	Python 2	2015-02-15 21:36:46
9	Hidden user	0.03 s	Python 2	2015-03-01 12:14:32
10	Team Baud	0.03 s	Python 2	2015-04-16 09:43:46

#	User	Runtime	Language	Date
1	Mikael Florén	0.02 s	Python 3	2014-11-24 12:52:52
2	Johannes Agestam	0.02 s	Python 3	2015-06-22 19:23:49
3	Petra Marc	0.02 s	Python 3	2015-07-25 11:53:16
4	Jeremy Tuloup	0.02 s	Python 3	2015-07-31 17:01:54
5	John William O'Rourke	0.02 s	Python 3	2015-09-20 22:10:18
6	Jeramy Lochner	0.02 s	Python 3	2015-10-01 00:52:08
7	Stepan Fedorko-Bartos	0.02 s	Python 3	2016-03-11 21:11:53
8	Atli Fannar Franklín	0.02 s	Python 3	2016-03-31 21:10:57
9	Arnar Bjarni Arnarson	0.02 s	Python 3	2016-04-13 02:17:15
10	Nicoletta Krstic	0.02 s	Python 3	2016-04-19 14:16:53

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-03-18 18:19:21
2	Hidden user	0.03 s	Ruby	2017-10-10 13:01:46
3	Erik Rydbert	0.03 s	Ruby	2017-11-17 08:27:12
4	Pandhu Hutomo Aditya	0.05 s	Ruby	2020-11-08 09:10:56
5	Thomas Feld	0.06 s	Ruby	2023-01-27 12:29:01
6	Chenzhang Hu	0.06 s	Ruby	2024-12-06 13:04:44

#	User	Runtime	Language	Date
1	isaveth guzman	0.04 s	TypeScript	2026-01-29 06:40:10

#	User	Runtime	Language	Date
1	Vemahk	0.00 s	Zig	2024-04-20 18:07:34

#	User	Length	Language	Date
1	Sebastian Banert	343	Ada	2024-07-07 23:52:22

#	User	Length	Language	Date
1	Thomas Feld	28	APL	2023-08-07 12:04:54
2	Mitchell Johnstone	32	APL	2023-08-03 18:25:13

#	User	Length	Language	Date
1	Thomas Feld	22	Bash	2023-09-28 10:03:33
2	Simon Schwartz	22	Bash	2025-04-02 17:23:01
3	Chenzhang Hu	22	Bash	2025-09-12 16:15:28

#	User	Length	Language	Date
1	Sebastian Miles	95	C	2022-09-20 22:20:02
2	test	175	C	2025-03-06 20:40:46
3	Amad Askor	206	C	2016-08-15 20:24:47
4	Julian Duniec	209	C	2023-08-29 13:41:56
5	Ivan Petrov	210	C	2019-09-16 08:34:34
6	Dat Do Thanh	223	C	2017-11-04 05:33:18
7	seppanz	225	C	2018-02-01 11:29:19
8	mario	233	C	2015-09-28 15:38:04
9	Hidden user	235	C	2025-01-09 22:34:37
10	Rick van Rheenen	236	C	2016-02-28 13:47:26

#	User	Length	Language	Date
1	Esty Crow	339	C#	2025-06-20 04:44:07
2	Callum Wilkinson	348	C#	2025-02-17 11:33:12
3	clarence chen	361	C#	2025-06-30 20:53:30
4	Thomas Norris	407	C#	2019-06-25 04:29:53
5	Raymond Holm	433	C#	2023-10-31 13:54:46
6	Rasmus Christensen	445	C#	2019-10-10 21:20:13
7	Ekaterina Tcareva	464	C#	2025-05-08 17:39:49
8	Albert Jende	492	C#	2025-11-17 14:30:37
9	Tom Ilestrand	524	C#	2019-02-19 08:19:48
10	Diego Dell	533	C#	2025-05-29 05:01:09

#	User	Length	Language	Date
1	Khawla Hbiech	177	C++	2018-07-13 04:01:53
2	Đậu Huy Minh	182	C++	2022-03-19 14:55:52
3	F38 郑锦诚 Tee Jin Seng	185	C++	2021-11-19 12:41:09
4	Ángel Aarón Flores Alberca	188	C++	2024-02-23 23:05:42
5	Hidden user	192	C++	2011-01-23 20:19:28
6	Johan Sannemo	193	C++	2011-10-02 19:01:27
7	Si Jun Ke	193	C++	2016-03-06 09:08:49
8	David van der Vorm	196	C++	2019-12-10 17:00:47
9	Hidden user	199	C++	2015-09-11 07:45:51
10	Leran Cai	202	C++	2014-06-11 11:15:14

#	User	Length	Language	Date
1	David Cawthon	542	Common Lisp	2020-06-07 18:14:25

#	User	Length	Language	Date
1	dick move	385	Crystal	2025-09-28 14:31:26

#	User	Length	Language	Date
1	Fustiki Scuria	1010	D	2024-09-13 05:30:47

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	462	F#	2023-03-22 19:17:07

#	User	Length	Language	Date
1	Suka Isnaini	205	Go	2023-12-15 16:22:57
2	Markus Mathiasen	223	Go	2022-08-22 14:33:35
3	Chris Vilches	234	Go	2024-08-21 15:21:51
4	Joas Haunstrup	275	Go	2022-08-24 22:15:11
5	Hidden user	325	Go	2021-01-24 12:29:07
6	Rickard Bemm	335	Go	2023-02-21 22:05:21
7	Marcin Dudek	343	Go	2016-02-16 23:24:08
8	Lucas Towers	353	Go	2020-10-04 01:38:01
9	Hidden user	359	Go	2018-04-17 15:02:36
10	Adriana Stancu	388	Go	2021-01-01 17:56:36

#	User	Length	Language	Date
1	Rudy Matela	157	Haskell	2024-03-23 13:26:31
2	Joshua Coward	193	Haskell	2021-11-17 17:09:10
3	Sebastian Banert	220	Haskell	2023-04-16 17:58:59
4	Erik Månsson	240	Haskell	2018-06-03 18:05:57
5	Brent Yorgey	247	Haskell	2017-09-30 00:49:00
6	Morten Lohne	253	Haskell	2017-10-25 15:03:30
7	Jørn Lode	276	Haskell	2019-08-30 15:19:04
8	Nicolas Crosetti	305	Haskell	2016-10-20 12:02:02
9	Martin	307	Haskell	2025-08-07 23:30:59
10	Hidden user	312	Haskell	2023-08-11 13:36:39

#	User	Length	Language	Date
1	Geson Chong	304	Java	2017-03-07 04:36:16
2	Miljan Mladenovic	324	Java	2023-04-06 15:01:43
3	Orio Wu	328	Java	2015-10-12 19:29:35
4	Sam Reinehr	334	Java	2017-10-17 05:46:45
5	Hidden user	336	Java	2019-10-17 10:24:15
6	RANJITHKUMAR A	338	Java	2025-04-17 04:25:05
7	Hidden user	339	Java	2025-04-23 17:53:18
8	Doug Goodman	345	Java	2017-08-23 15:40:01
9	Zimu Qin	353	Java	2015-06-24 17:41:29
10	Emilie Hyslop	356	Java	2022-01-07 07:31:06

#	User	Length	Language	Date
1	Nikola Stojkovski	338	JavaScript (Node.js)	2022-08-12 15:22:18
2	Ali Aliev	362	JavaScript (Node.js)	2021-12-18 16:25:09
3	Carles Bordas	389	JavaScript (Node.js)	2023-07-12 19:18:27
4	Mayra Bautista	424	JavaScript (Node.js)	2020-04-26 08:12:44
5	Gert Lenaerts	436	JavaScript (Node.js)	2020-05-07 19:52:27
6	Hidden user	440	JavaScript (Node.js)	2021-01-04 02:56:07
7	Alvaro Mamani Limachi	511	JavaScript (Node.js)	2020-04-23 19:18:59
8	Pelle	525	JavaScript (Node.js)	2024-04-15 21:36:31
9	Will Cosley	596	JavaScript (Node.js)	2025-03-24 19:06:32
10	Samuel Högfeldt	655	JavaScript (Node.js)	2022-07-08 11:35:09

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	192	JavaScript (SpiderMonkey)	2023-02-10 10:02:45
2	Zachary DeStefano	209	JavaScript (SpiderMonkey)	2018-02-08 18:57:21
3	Graham Fairweather	217	JavaScript (SpiderMonkey)	2017-10-07 01:35:28
4	Anuz Sah	242	JavaScript (SpiderMonkey)	2025-01-29 07:14:58
5	Andrew Gemmel	247	JavaScript (SpiderMonkey)	2016-10-29 22:37:32
6	Zach Tschetter	258	JavaScript (SpiderMonkey)	2023-06-13 02:52:24
7	Dilawar Mahmood	282	JavaScript (SpiderMonkey)	2018-01-23 17:48:33
8	Benjamin A Jenkins	288	JavaScript (SpiderMonkey)	2017-01-21 01:18:27
9	Tor Nordqvist	320	JavaScript (SpiderMonkey)	2022-12-26 14:10:04
10	Hà Minh Ngọc	343	JavaScript (SpiderMonkey)	2016-07-28 10:51:45

#	User	Length	Language	Date
1	Hidden user	328	Julia	2025-02-16 20:25:21
2	Timothy Gaede	1604	Julia	2024-04-24 14:43:30

#	User	Length	Language	Date
1	Hidden user	217	Kotlin	2023-06-09 11:10:27
2	Dayan Ruben Gonzalez	477	Kotlin	2020-10-09 05:41:08
3	Nicholas Johnson	500	Kotlin	2020-03-07 06:06:01
4	Jan Kowalski	576	Kotlin	2022-07-06 16:32:26
5	Peter Mikkelsen	665	Kotlin	2021-01-11 18:52:19
6	Adam Rankin	671	Kotlin	2023-04-24 20:21:10
7	Dmitry Shostak	894	Kotlin	2018-08-23 10:59:48
8	Jacob Huebner	965	Kotlin	2020-03-18 06:58:05
9	Torbjørn Tessem	1030	Kotlin	2023-08-16 17:06:17
10	Thanh Le	1436	Kotlin	2021-07-14 02:26:14

#	User	Length	Language	Date
1	Markus Petersson	358	Lua	2025-10-23 22:18:50

#	User	Length	Language	Date
1	Hidden user	569	Nim	2025-05-20 09:50:48

#	User	Length	Language	Date
1	Hidden user	598	OCaml	2024-06-06 11:55:03
2	Joel Newman	10776	OCaml	2023-11-23 02:37:02

#	User	Length	Language	Date
1	屏翰 张	1542	Odin	2025-11-13 13:54:14

#	User	Length	Language	Date
1	Bách Nguyễn	315	Pascal	2018-01-05 14:16:05
2	Trường Nhật Dương	319	Pascal	2018-01-04 08:40:10
3	Nhật Quang	692	Pascal	2018-01-04 09:09:35

#	User	Length	Language	Date
1	Saito Ta	20	Perl	2024-04-18 11:09:05

#	User	Length	Language	Date
1	Peter Toso	339	PHP	2025-05-16 07:56:49

#	User	Length	Language	Date
1	Mathis Hammel	85	Python 2	2016-12-18 15:03:44
2	Thomas Feld	90	Python 2	2019-08-19 15:58:08
3	Mallavarapu Poojitha	148	Python 2	2020-08-18 11:41:01
4	Vusthulamuri Bhoomika	148	Python 2	2020-08-18 15:49:03
5	Mounika mouni	148	Python 2	2020-08-20 14:25:59
6	Neal Zane	152	Python 2	2016-01-14 18:02:43
7	Josh Long	153	Python 2	2017-10-21 03:07:20
8	Jesse Raphael	157	Python 2	2018-10-22 23:19:02
9	Johannes Agestam	159	Python 2	2015-06-22 19:51:21
10	John Edward Pascual	165	Python 2	2018-03-21 02:25:22

#	User	Length	Language	Date
1	Daniel Bogorad	73	Python 3	2025-09-19 18:08:43
2	Tassilo Radon	74	Python 3	2024-05-02 16:42:45
3	Kevin Gomez	74	Python 3	2025-05-18 05:11:01
4	Tommi Järvenpää	75	Python 3	2024-04-04 11:47:44
5	Clement Oh	81	Python 3	2023-05-26 20:09:05
6	Simon Baeckelant	88	Python 3	2025-11-08 15:33:04
7	Tai Tze Kin	98	Python 3	2024-05-04 22:15:39
8	M Base 2	101	Python 3	2020-07-09 12:01:27
9	Matteo Sevenius	102	Python 3	2024-11-26 19:43:48
10	Anass Dahchour	107	Python 3	2021-09-15 13:32:40

#	User	Length	Language	Date
1	Chenzhang Hu	18	Ruby	2024-12-06 13:04:44
2	Thomas Feld	18	Ruby	2025-09-17 15:52:03
3	Casper Christensen	107	Ruby	2016-03-18 18:19:21
4	Hidden user	116	Ruby	2017-10-10 13:01:46
5	Pandhu Hutomo Aditya	236	Ruby	2020-11-08 09:10:56
6	Erik Rydbert	280	Ruby	2017-11-17 08:27:12

#	User	Length	Language	Date
1	Vincent Lagerros	209	Rust	2024-05-16 19:06:20
2	Artur Khuziakhmetov	332	Rust	2023-08-14 17:26:57
3	Joe Blower	392	Rust	2025-06-19 02:53:53
4	Nicholas Bachmann Tjørnelund	425	Rust	2020-02-10 12:29:54
5	Bas Dirks	438	Rust	2022-01-14 16:03:02
6	Hidden user	464	Rust	2023-08-19 21:01:54
7	Christian Rasmussen	471	Rust	2021-01-22 22:05:46
8	Chaoyi Yin	488	Rust	2019-01-31 04:56:43
9	Robert Janczewski	497	Rust	2020-02-12 11:59:40
10	Jonathan Blomlöf	504	Rust	2024-02-27 23:12:00

#	User	Length	Language	Date
1	isaveth guzman	387	TypeScript	2026-01-29 06:40:10

#	User	Length	Language	Date
1	Vemahk	2891	Zig	2024-04-20 18:07:34

Solution running time distribution