Problem D
FBI Universal Control Numbers — Problem Statistics

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Submissions	1580
Accepted submissions	862
Submission ratio	54.56%
Authors	803
Full solves [?]	738
Full solve Ratio	91.91%

#	User	Runtime	Language	Date
1	Eric McKnight	0.00 s	C	2017-10-21 18:06:07
2	Ivan Petrov	0.00 s	C	2017-12-06 09:12:45
3	Bergur Snorrason	0.00 s	C	2020-04-15 10:01:15
4	PhilCampbell	0.00 s	C	2021-02-22 18:09:48
5	Jonathan Ski	0.00 s	C	2021-10-11 17:37:59
6	Eyleifur Bjarkason	0.00 s	C	2022-12-29 19:58:27
7	Anthony Pagnotta	0.00 s	C	2023-01-20 22:32:16
8	Tyler Mulholland	0.00 s	C	2025-02-26 20:05:28
9	Hidden user	0.01 s	C	2017-11-08 21:52:06
10	Hidden user	0.01 s	C	2017-11-22 04:06:39

#	User	Runtime	Language	Date
1	Nick Russell	0.05 s	C#	2018-06-18 19:50:25
2	Muhammad Fathir Irhas	0.07 s	C#	2017-10-29 08:45:11
3	Gurpartap Singh Bhatti	0.07 s	C#	2019-10-27 03:32:44
4	Clemens Kerer	0.07 s	C#	2019-11-01 18:42:54
5	Mikael Fiala-Lundström	0.08 s	C#	2021-06-14 19:33:23
6	Natalie Wagner	0.09 s	C#	2025-10-04 17:15:28
7	Abdellatif Elyoussefy	0.11 s	C#	2020-12-27 11:56:48
8	Göran Andersson	0.11 s	C#	2022-05-22 00:05:22

#	User	Runtime	Language	Date
1	Hidden user	0.07 s	Common Lisp	2019-06-11 02:26:35
2	David Cawthon	0.10 s	Common Lisp	2019-05-11 14:24:11

#	User	Runtime	Language	Date
1	Chris Rudolph	0.13 s	F#	2020-11-13 04:13:09
2	Jacob Harris Cryer Kragh	0.15 s	F#	2022-11-06 14:10:44

#	User	Runtime	Language	Date
1	Norbert Voelker	0.07 s	Go	2021-05-25 11:05:01
2	Hidden user	0.14 s	Go	2019-10-29 16:06:24
3	Ian Howell	0.29 s	Go	2019-09-26 20:57:48

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.01 s	Haskell	2024-03-09 17:54:20
2	Tim Put	0.02 s	Haskell	2021-07-30 22:14:00
3	Hidden user	0.03 s	Haskell	2019-04-14 13:55:07
4	Stian	0.03 s	Haskell	2021-10-11 17:11:46
5	Hidden user	0.04 s	Haskell	2019-09-04 13:34:48
6	Hidden user	0.04 s	Haskell	2023-01-18 23:57:16
7	Patrik Lilja	0.05 s	Haskell	2017-10-29 11:26:57
8	Brent Yorgey	0.05 s	Haskell	2017-11-01 04:23:03
9	vagabundus	0.05 s	Haskell	2024-05-04 14:38:46
10	Olle Eriksson	0.06 s	Haskell	2018-06-27 21:40:08

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.08 s	Java	2023-05-06 17:26:41
2	José Vander Meulen	0.10 s	Java	2018-11-28 22:00:24
3	Bjørn Dons	0.11 s	Java	2018-11-27 02:07:22
4	Samuel Klingström	0.13 s	Java	2020-09-09 15:48:31
5	James Black	0.14 s	Java	2018-02-09 19:17:27
6	Zach Glick	0.15 s	Java	2017-10-21 17:50:46
7	Minwei Xu	0.15 s	Java	2017-10-21 18:49:17
8	Nick Wu	0.15 s	Java	2017-10-23 05:11:06
9	Anh Nguyen	0.16 s	Java	2017-10-21 20:28:15
10	Alyssa Herbst	0.17 s	Java	2017-10-21 19:00:02

#	User	Runtime	Language	Date
1	Ehsan	0.27 s	JavaScript (Node.js)	2022-11-18 22:54:26

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.06 s	JavaScript (SpiderMonkey)	2023-02-17 11:00:45
2	Jimmy Gustafsson	0.06 s	JavaScript (SpiderMonkey)	2024-08-21 07:45:09
3	Bjørn Chr. Soltvedt	0.11 s	JavaScript (SpiderMonkey)	2017-10-24 14:09:21

#	User	Runtime	Language	Date
1	Timothy Gaede	0.80 s	Julia	2024-04-23 02:14:09

#	User	Runtime	Language	Date
1	Danny Mittal	0.28 s	Kotlin	2020-10-08 20:26:29
2	Adam Rankin	0.33 s	Kotlin	2023-11-12 19:11:16
3	Neil Harmon	0.60 s	Kotlin	2019-07-11 13:38:57

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.01 s	Pascal	2019-07-13 09:48:17

#	User	Runtime	Language	Date
1	Seyoon Ragavan	0.07 s	Python 2	2017-11-10 20:42:06
2	Hidden user	0.07 s	Python 2	2018-09-23 11:36:40
3	Johan Lyts	0.07 s	Python 2	2019-07-02 19:48:20
4	Yanmarshus Bachtiar	0.07 s	Python 2	2019-10-31 11:07:20
5	Haochen Chen	0.08 s	Python 2	2017-10-21 17:25:06
6	Simran Virk	0.08 s	Python 2	2017-10-21 20:13:25
7	Honorio Vega	0.08 s	Python 2	2018-03-31 00:42:19
8	Maj Stenmark	0.08 s	Python 2	2019-01-14 20:00:06
9	Martin Wan	0.09 s	Python 2	2017-10-21 18:01:16
10	Aarav Singh	0.09 s	Python 2	2017-10-21 18:11:18

#	User	Runtime	Language	Date
1	Reed Christensen	0.05 s	Python 3	2019-12-09 01:51:15
2	Enzio Kam Hai Hong	0.06 s	Python 3	2019-07-15 16:15:03
3	Cameron Cunningham	0.06 s	Python 3	2019-08-08 01:43:50
4	Dominic Berzin Chua Way Gin	0.06 s	Python 3	2025-04-17 11:49:11
5	Kaleo Shinichi Sato	0.07 s	Python 3	2017-10-21 19:13:44
6	Ram Basnet	0.07 s	Python 3	2018-01-10 06:00:01
7	Yang Li	0.07 s	Python 3	2018-04-24 08:58:44
8	Herbert Ilhan Tanujaya	0.07 s	Python 3	2019-02-14 14:53:28
9	James Boyd	0.07 s	Python 3	2019-11-08 04:37:41
10	John Kuroda	0.07 s	Python 3	2019-11-08 05:05:07

#	User	Runtime	Language	Date
1	Kok Dith	0.11 s	Ruby	2021-09-02 01:55:37

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2025-08-19 16:16:56
2	Hidden user	0.02 s	Rust	2019-12-03 00:03:22
3	David Rasch	0.02 s	Rust	2020-10-08 13:21:23
4	Bas Dirks	0.02 s	Rust	2022-01-08 11:49:35
5	Artur Khuziakhmetov	0.02 s	Rust	2025-01-22 15:06:14
6	Klas af Geijerstam	0.03 s	Rust	2020-09-13 14:45:01

#	User	Length	Language	Date
1	Huy Dinh	911	C	2018-05-11 19:45:27
2	Sambit Palit	972	C	2020-09-20 18:25:43
3	PhilCampbell	1347	C	2021-02-22 18:09:48
4	Hidden user	1367	C	2017-11-22 04:06:39
5	Naveen Kumar S	1981	C	2025-04-14 09:40:35
6	Mikael K Eriksson	2403	C	2021-05-22 12:13:30
7	Bergur Snorrason	2512	C	2020-04-15 09:59:11
8	Jonathan Ski	2744	C	2021-10-11 17:37:59
9	Hidden user	2754	C	2017-11-08 21:52:06
10	Anthony Pagnotta	2832	C	2023-01-20 22:32:16

#	User	Length	Language	Date
1	Göran Andersson	1143	C#	2022-05-22 00:05:22
2	Natalie Wagner	1898	C#	2025-10-04 17:15:28
3	Abdellatif Elyoussefy	2183	C#	2020-12-27 11:56:48
4	Nick Russell	2455	C#	2018-06-18 19:50:25
5	Gurpartap Singh Bhatti	3378	C#	2019-10-27 03:18:46
6	Clemens Kerer	4023	C#	2019-11-01 18:42:54
7	Muhammad Fathir Irhas	4302	C#	2017-10-29 08:45:11
8	Mikael Fiala-Lundström	4551	C#	2021-06-14 19:33:23

#	User	Length	Language	Date
1	William Gan	601	C++	2018-03-10 12:56:58
2	Rik Bauwens	689	C++	2021-02-09 21:15:16
3	Souhail Elkaissi	690	C++	2020-12-25 21:59:41
4	Frederick Pek	691	C++	2021-06-19 14:32:12
5	Johan Wind	714	C++	2018-04-02 05:13:32
6	Ashley Khoo	721	C++	2018-11-07 14:15:10
7	Chase Hinesman	737	C++	2018-05-11 01:19:31
8	人外沙耶	782	C++	2020-11-05 12:02:39
9	Hyunjun Lee	783	C++	2022-10-18 10:32:35
10	Ethan Guo	818	C++	2018-11-16 11:41:52

#	User	Length	Language	Date
1	David Cawthon	1379	Common Lisp	2019-05-11 14:24:11
2	Hidden user	3093	Common Lisp	2019-06-11 02:49:32

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1721	F#	2022-11-06 14:10:44
2	Chris Rudolph	3311	F#	2020-11-13 04:13:09

#	User	Length	Language	Date
1	Norbert Voelker	1469	Go	2021-05-25 11:05:01
2	Ian Howell	1498	Go	2019-09-26 20:57:48
3	Hidden user	2620	Go	2019-10-29 16:06:24

#	User	Length	Language	Date
1	Tim Put	911	Haskell	2021-07-30 22:14:00
2	Hidden user	1081	Haskell	2023-01-18 23:57:16
3	Steinar Simonnes	1098	Haskell	2024-03-09 18:00:35
4	Patrik Lilja	1135	Haskell	2017-10-29 11:26:57
5	Brent Yorgey	1271	Haskell	2017-11-01 04:23:03
6	vagabundus	1331	Haskell	2024-05-04 14:38:46
7	Stian	1954	Haskell	2021-10-11 17:11:46
8	Olle Eriksson	1999	Haskell	2018-06-27 21:40:08
9	Hidden user	4019	Haskell	2019-04-14 13:55:07
10	Hidden user	5943	Haskell	2019-09-04 13:34:48

#	User	Length	Language	Date
1	Ryan Looney	808	Java	2017-10-21 20:27:29
2	Doug Goodman	924	Java	2017-11-21 21:32:13
3	Kyle Workman	1170	Java	2018-09-28 16:23:47
4	Jiru Xu	1174	Java	2017-10-21 17:58:53
5	Jiho Kim	1199	Java	2018-11-08 03:42:41
6	Emilie Hyslop	1240	Java	2022-01-14 05:37:16
7	David Van Nguyen	1257	Java	2024-07-10 18:20:11
8	Olesia Elfimova	1348	Java	2017-10-21 18:10:41
9	Brandon Ou	1395	Java	2020-10-08 05:37:57
10	Andrew Polizzotto	1401	Java	2019-09-30 04:52:50

#	User	Length	Language	Date
1	Ehsan	1198	JavaScript (Node.js)	2022-11-18 22:54:26

#	User	Length	Language	Date
1	Jimmy Gustafsson	350	JavaScript (SpiderMonkey)	2024-08-21 07:45:09
2	Christian Pilegaard Cederquist	796	JavaScript (SpiderMonkey)	2023-02-17 11:00:45
3	Bjørn Chr. Soltvedt	825	JavaScript (SpiderMonkey)	2017-10-24 14:09:21

#	User	Length	Language	Date
1	Timothy Gaede	1391	Julia	2024-04-23 02:14:09

#	User	Length	Language	Date
1	Danny Mittal	1058	Kotlin	2020-10-08 20:26:29
2	Adam Rankin	1580	Kotlin	2023-11-12 19:11:16
3	Neil Harmon	2458	Kotlin	2019-07-11 13:38:57

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1034	Pascal	2019-07-13 09:48:17

#	User	Length	Language	Date
1	Thomas Feld	339	Python 2	2019-09-10 11:53:41
2	Cheng Hang	400	Python 2	2017-12-06 08:59:53
3	Lars Åström	451	Python 2	2019-09-16 14:17:23
4	Akif Patel	494	Python 2	2019-04-25 00:43:55
5	Jesper Öqvist	502	Python 2	2018-10-25 16:40:22
6	Matt Bonsall	522	Python 2	2017-10-22 20:29:56
7	Johan Lyts	704	Python 2	2019-07-02 19:48:20
8	Martin Wan	706	Python 2	2017-10-21 18:01:16
9	Wang Zhi Jian	738	Python 2	2019-05-03 05:12:21
10	Honorio Vega	770	Python 2	2018-03-31 00:42:19

#	User	Length	Language	Date
1	Nguyên Khôi Đỗ	254	Python 3	2025-05-29 21:31:31
2	Thibault Raffaillac	270	Python 3	2024-08-19 15:38:55
3	Russell Ng	270	Python 3	2025-06-06 03:09:34
4	Ahmed Chamseddine	334	Python 3	2024-08-23 15:07:02
5	Jason Cannon	347	Python 3	2019-11-21 19:50:10
6	David Alexander R. Amante	393	Python 3	2023-09-29 15:24:14
7	Kenneth Jensen	449	Python 3	2022-08-18 09:36:38
8	Jón Steinn Elíasson	465	Python 3	2018-05-04 16:49:27
9	Tony Feng	465	Python 3	2019-11-14 15:38:49
10	Alan Sanchez	465	Python 3	2019-12-03 17:43:32

#	User	Length	Language	Date
1	Kok Dith	518	Ruby	2021-09-02 01:55:37

#	User	Length	Language	Date
1	Artur Khuziakhmetov	926	Rust	2025-01-22 15:06:14
2	David Rasch	1715	Rust	2020-10-08 13:21:23
3	Hidden user	2043	Rust	2019-12-03 00:03:22
4	Bas Dirks	2050	Rust	2022-01-08 11:49:35
5	Klas af Geijerstam	7591	Rust	2020-09-13 14:45:01
6	Vincent Lagerros	63431	Rust	2025-08-19 16:16:56

Solution running time distribution