Problem D
Forced Choice — Problem Statistics

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Submissions	3433
Accepted submissions	2234
Submission ratio	65.07%
Authors	2106
Full solves [?]	2022
Full solve Ratio	96.01%

#	User	Runtime	Language	Date
1	Matzuka	0.30 s	APL	2025-03-29 15:32:13

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-01 10:11:43
2	Chenzhang Hu	0.01 s	Bash	2025-09-12 18:33:09

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.02 s	C#	2021-03-31 17:43:27
2	Владимир Хилько	0.02 s	C#	2022-05-20 05:53:17
3	Yuwono Bangun Nagoro	0.03 s	C#	2021-04-25 06:37:12
4	Petra Marc	0.03 s	C#	2021-05-02 14:10:17
5	Maykal Droshev	0.03 s	C#	2021-05-25 13:21:06
6	Per Wendt	0.03 s	C#	2021-05-25 14:31:43
7	Toby Maynard	0.03 s	C#	2021-06-11 19:00:45
8	Jonas Thomassen	0.03 s	C#	2021-06-23 18:54:08
9	Victor Hultén Mattsson	0.03 s	C#	2021-07-05 21:31:27
10	Jan Matthiessen	0.03 s	C#	2021-07-21 12:37:45

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.07 s	F#	2022-05-28 19:28:13

#	User	Runtime	Language	Date
1	David Vinje	0.02 s	Go	2022-08-01 16:35:41
2	Krzysztof Gibuła	0.07 s	Go	2021-04-13 22:12:12
3	Norbert Voelker	0.08 s	Go	2021-04-08 18:53:23
4	Yousif Ibrahim	0.09 s	Go	2024-03-25 11:26:15
5	Albert Rise Nielsen	0.14 s	Go	2021-08-20 09:09:33
6	Lucca Dias	0.14 s	Go	2021-11-14 14:54:49
7	Hidden user	0.14 s	Go	2021-12-15 12:40:53
8	Jimmy Nejtron	0.17 s	Go	2022-12-16 15:03:52

#	User	Runtime	Language	Date
1	Tim Put	0.01 s	Haskell	2021-04-18 21:02:00
2	Hidden user	0.01 s	Haskell	2021-05-29 12:27:22
3	Caleb Surovik	0.01 s	Haskell	2021-06-15 22:11:27
4	Ian Koh	0.01 s	Haskell	2021-06-28 07:38:44
5	Brian Hwang	0.01 s	Haskell	2022-09-06 05:06:36
6	Matthew Johnson	0.01 s	Haskell	2022-12-02 17:43:09
7	Sebastian Banert	0.01 s	Haskell	2023-04-20 22:04:14
8	Steinar Simonnes	0.01 s	Haskell	2024-01-15 07:53:57
9	Brent Yorgey	0.02 s	Haskell	2021-03-28 03:37:00
10	Jan Hrček	0.02 s	Haskell	2021-03-28 12:43:47

#	User	Runtime	Language	Date
1	Crystal Sharpe	0.06 s	Java	2021-04-08 01:12:36
2	Sven Rönnbäck	0.06 s	Java	2021-11-30 13:37:34
3	Lee Heng Sheng	0.06 s	Java	2024-04-17 04:59:27
4	Joachim Borup	0.07 s	Java	2021-04-09 14:10:31
5	Emil Bak-Møller	0.07 s	Java	2021-06-06 21:54:21
6	Darshan Vekaria	0.07 s	Java	2022-10-22 17:48:04
7	Samuel Klingström	0.08 s	Java	2021-04-05 17:40:08
8	Goh Zhixuan Jeremiah	0.08 s	Java	2025-02-07 08:41:46
9	Liam Keliher	0.09 s	Java	2021-04-01 01:02:56
10	Kevin Lee	0.09 s	Java	2021-12-08 17:17:40

#	User	Runtime	Language	Date
1	Grant Nelson	0.05 s	JavaScript (Node.js)	2024-01-25 16:28:33
2	Faisal Rahman	0.05 s	JavaScript (Node.js)	2024-02-14 23:17:19
3	Hidden user	0.06 s	JavaScript (Node.js)	2024-08-10 14:49:35
4	John	0.09 s	JavaScript (Node.js)	2022-07-15 01:49:18
5	Marko Doroch	0.09 s	JavaScript (Node.js)	2022-12-12 02:30:03
6	Casper Lundberg	0.10 s	JavaScript (Node.js)	2022-09-14 19:42:52
7	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-03-29 14:51:43
8	Ali	0.42 s	JavaScript (Node.js)	2021-12-19 11:33:12
9	Peter Kedemo	0.42 s	JavaScript (Node.js)	2022-01-02 10:09:03
10	Karim Dridi	0.42 s	JavaScript (Node.js)	2022-01-14 15:36:38

#	User	Runtime	Language	Date
1	Håkan Lindahl	0.02 s	JavaScript (SpiderMonkey)	2022-06-15 22:01:32
2	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-08-15 21:33:44
3	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2022-10-30 23:43:42
4	Ben Armstrong	0.02 s	JavaScript (SpiderMonkey)	2025-08-06 18:42:50
5	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2021-03-28 06:37:18
6	Nicklas Utgaard	0.03 s	JavaScript (SpiderMonkey)	2021-04-16 20:00:02
7	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-08-09 10:26:50
8	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2023-05-02 18:53:08

#	User	Runtime	Language	Date
1	Danny Robinson	0.62 s	Julia	2023-09-01 10:25:09
2	Timothy Gaede	0.68 s	Julia	2024-03-31 01:11:55

#	User	Runtime	Language	Date
1	Jacob Huebner	0.14 s	Kotlin	2021-10-07 19:14:22
2	Albert Pala	0.16 s	Kotlin	2021-06-13 14:50:48
3	Nicholas Johnson	0.17 s	Kotlin	2021-10-07 03:32:23
4	Jakub Jagiello	0.24 s	Kotlin	2021-06-14 19:45:53
5	Roger Bongers	0.24 s	Kotlin	2021-06-26 18:35:10
6	Martijn Muijsers	0.24 s	Kotlin	2024-05-27 17:56:39
7	Adam Rankin	0.26 s	Kotlin	2023-04-26 18:16:02
8	Emil Wihlander	0.27 s	Kotlin	2023-07-24 18:23:30
9	Max Holmberg	0.27 s	Kotlin	2023-12-30 10:45:04
10	Marit van Dijk	0.29 s	Kotlin	2021-09-13 17:09:12

#	User	Runtime	Language	Date
1	Jahid Hasan Imon	0.00 s	OCaml	2021-04-15 17:17:57

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Odin	2025-04-30 00:19:36

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2021-03-31 09:24:34
2	David Connolly	0.01 s	Pascal	2021-11-22 12:42:29

#	User	Runtime	Language	Date
1	Saito Ta	0.00 s	Perl	2024-04-08 08:21:26

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-04-19 10:26:53
2	Andre Wahyudi	0.01 s	PHP	2022-09-20 04:21:56

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.03 s	Prolog	2023-02-19 19:58:07

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.03 s	Python 2	2021-05-29 03:53:52
2	Andrei Stoica	0.03 s	Python 2	2021-09-09 10:30:35
3	Hasan Kalzi	0.03 s	Python 2	2022-06-18 08:28:14
4	Andreas Björklund	0.04 s	Python 2	2021-03-28 07:09:02
5	Johan Lyts	0.04 s	Python 2	2021-04-03 19:04:42
6	Thomas Feld	0.04 s	Python 2	2021-05-21 06:21:20
7	Agis Daniels	0.04 s	Python 2	2021-12-13 11:45:02

#	User	Runtime	Language	Date
1	Luis Enrique Cortijo Gonzales	0.04 s	Python 3	2024-09-04 05:09:26
2	Alexandre Charland	0.04 s	Python 3	2024-09-10 20:53:42
3	Anthony	0.04 s	Python 3	2024-09-19 21:01:44
4	Jonathan de Koning	0.04 s	Python 3	2024-09-19 21:43:14
5	Joshua Silva	0.04 s	Python 3	2024-09-19 22:13:39
6	Vivian Tran	0.04 s	Python 3	2024-09-19 22:20:47
7	Fikir Yared	0.04 s	Python 3	2024-09-27 17:58:02
8	Adonyas	0.04 s	Python 3	2024-09-27 18:32:42
9	lankan01	0.04 s	Python 3	2024-09-30 10:05:30
10	Rebecca Jackson	0.04 s	Python 3	2024-10-02 12:41:31

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2021-03-30 19:40:05
2	Jonathan Ogden	0.05 s	Ruby	2021-05-26 19:03:52
3	Régis Hanol	0.05 s	Ruby	2022-01-07 17:39:55
4	TobiasZ	0.05 s	Ruby	2022-01-29 21:12:21
5	Klas af Geijerstam	0.06 s	Ruby	2021-04-07 15:46:02
6	Hadi Qovaizi	0.06 s	Ruby	2021-06-16 19:33:38
7	Thomas Feld	0.06 s	Ruby	2022-11-01 11:30:43
8	dick move	0.06 s	Ruby	2022-11-09 21:08:09
9	Alexander Bilde Pedersen	0.06 s	Ruby	2023-05-07 21:32:06
10	Drew Wilson	0.07 s	Ruby	2023-05-24 16:08:31

#	User	Length	Language	Date
1	Matzuka	89	APL	2025-03-29 15:43:14

#	User	Length	Language	Date
1	Chenzhang Hu	44	Bash	2025-09-12 18:33:09
2	Danny Robinson	79	Bash	2023-09-01 10:11:43

#	User	Length	Language	Date
1	Martin Blom	149	C	2023-10-09 13:07:51
2	Solar Solar	334	C	2021-12-20 07:02:27
3	Raymond Yang	346	C	2021-06-18 20:22:57
4	Ximun Castoreo	347	C	2022-01-07 07:40:54
5	Sambit Palit	363	C	2021-06-26 21:21:48
6	Domnyk Z	371	C	2021-10-07 19:00:07
7	Florian ten Napel	378	C	2025-06-09 11:50:37
8	Sergey Jakobsen	390	C	2021-04-14 19:44:25
9	Andrew Roberts	392	C	2021-05-14 23:58:01
10	Matthew Weston	395	C	2021-12-26 13:06:51

#	User	Length	Language	Date
1	Esty Crow	456	C#	2022-10-03 12:56:41
2	Göran Andersson	540	C#	2022-05-07 20:04:47
3	Deci Bel	567	C#	2025-06-01 09:36:54
4	Petra Marc	584	C#	2021-05-02 14:13:08
5	Eric Weiss	612	C#	2022-05-02 16:34:54
6	Victor Hultén Mattsson	688	C#	2021-07-05 21:31:27
7	Mark Nickelsen	702	C#	2025-11-28 11:25:54
8	Julian Boy	705	C#	2022-12-28 13:34:35
9	Umar Rasyid	728	C#	2025-01-26 23:10:24
10	Gustav Junedahl	745	C#	2022-04-22 17:01:35

#	User	Length	Language	Date
1	Frans Meulenbroeks	151	C++	2024-11-10 21:50:16
2	a_b__c	169	C++	2021-08-17 17:37:36
3	Darryl Teo	243	C++	2024-02-03 08:41:28
4	owo	251	C++	2024-04-26 00:53:46
5	Yash Mundra	262	C++	2023-03-29 00:00:37
6	Saw Moo De	264	C++	2022-12-22 04:11:48
7	Hein Tay Za	264	C++	2023-01-03 03:38:36
8	黃太陽	265	C++	2021-08-07 19:01:44
9	HYADUKUONING ROQAL	276	C++	2022-11-21 08:39:31
10	Andres Leonel Juarez Careaga	282	C++	2021-05-13 15:03:48

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	410	F#	2022-05-28 19:28:13

#	User	Length	Language	Date
1	Hidden user	351	Go	2021-12-15 12:40:53
2	Jimmy Nejtron	356	Go	2022-12-16 15:03:52
3	Albert Rise Nielsen	383	Go	2021-08-20 09:09:33
4	Yousif Ibrahim	472	Go	2024-03-25 11:26:15
5	David Vinje	502	Go	2022-08-01 16:35:41
6	Krzysztof Gibuła	593	Go	2021-04-13 22:12:12
7	Lucca Dias	669	Go	2021-11-14 14:54:49
8	Norbert Voelker	867	Go	2021-04-08 18:53:23

#	User	Length	Language	Date
1	Matthew Johnson	120	Haskell	2022-12-02 17:52:31
2	Brent Yorgey	162	Haskell	2021-03-28 03:37:00
3	Sebastian Banert	173	Haskell	2023-04-20 22:04:14
4	Tim Put	219	Haskell	2021-04-18 21:02:00
5	Monique Oliveira	243	Haskell	2021-07-13 04:46:21
6	Steinar Simonnes	258	Haskell	2024-01-15 07:53:57
7	Elizabeth Doughty	279	Haskell	2024-02-05 07:34:45
8	Daniel Cabral	300	Haskell	2022-03-03 07:08:20
9	Oisín Mac Fhearaí	343	Haskell	2021-05-22 18:56:18
10	Scott Dauer	346	Haskell	2022-03-05 01:31:34

#	User	Length	Language	Date
1	Raymond Arrington	419	Java	2024-06-08 02:23:50
2	Lim Ting Kai	421	Java	2023-06-03 12:11:35
3	Carter Henderson	427	Java	2021-09-30 15:59:14
4	Mark Jason Galang	465	Java	2022-10-02 14:59:55
5	Brennan Cleland	470	Java	2022-11-20 06:41:31
6	Cory Haas	472	Java	2021-11-18 02:57:22
7	Anton Sandin	475	Java	2022-04-20 11:24:05
8	Wei Lun Toh	480	Java	2022-08-18 04:08:28
9	Tenzin Chophel	495	Java	2021-04-08 17:35:22
10	Selamawit Eshete	496	Java	2022-08-28 01:58:13

#	User	Length	Language	Date
1	Peter Kedemo	378	JavaScript (Node.js)	2022-01-02 10:09:03
2	Karim Dridi	380	JavaScript (Node.js)	2022-01-14 15:36:38
3	Grant Nelson	514	JavaScript (Node.js)	2024-01-25 16:28:33
4	Ali	522	JavaScript (Node.js)	2021-12-19 11:33:12
5	Howard Tin Chi Chan	538	JavaScript (Node.js)	2021-03-29 14:51:43
6	Marko Doroch	550	JavaScript (Node.js)	2022-12-12 02:30:03
7	Hidden user	609	JavaScript (Node.js)	2023-08-04 01:46:10
8	Chris Wong	612	JavaScript (Node.js)	2022-01-12 14:25:48
9	Niamh Limerick	670	JavaScript (Node.js)	2022-02-18 00:40:57
10	John	698	JavaScript (Node.js)	2022-07-15 01:49:18

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	96	JavaScript (SpiderMonkey)	2022-10-30 23:44:55
2	Peter Menyes	121	JavaScript (SpiderMonkey)	2021-08-09 10:43:01
3	Jimmy Gustafsson	177	JavaScript (SpiderMonkey)	2022-08-15 21:33:44
4	Bjørn Chr. Soltvedt	192	JavaScript (SpiderMonkey)	2021-03-28 06:52:29
5	Ben Armstrong	192	JavaScript (SpiderMonkey)	2025-08-06 18:42:50
6	Zach Tschetter	248	JavaScript (SpiderMonkey)	2023-05-02 18:53:08
7	Håkan Lindahl	341	JavaScript (SpiderMonkey)	2022-06-15 22:01:32
8	Nicklas Utgaard	440	JavaScript (SpiderMonkey)	2021-04-16 20:00:02

#	User	Length	Language	Date
1	Danny Robinson	100	Julia	2023-09-01 10:25:09
2	Timothy Gaede	673	Julia	2024-03-31 01:11:55

#	User	Length	Language	Date
1	Max Holmberg	314	Kotlin	2023-12-30 10:45:04
2	Roger Bongers	347	Kotlin	2021-06-26 18:35:10
3	Lewis Johnson	358	Kotlin	2023-04-28 20:30:53
4	Emil Wihlander	364	Kotlin	2023-07-24 18:23:30
5	Troy Warmboe	396	Kotlin	2021-10-09 00:46:09
6	Jakub Jagiello	407	Kotlin	2021-06-14 19:45:53
7	Marit van Dijk	479	Kotlin	2021-09-13 17:09:12
8	Adam Rankin	497	Kotlin	2023-04-26 18:16:02
9	Martijn Muijsers	535	Kotlin	2024-05-27 17:56:39
10	Hidden user	917	Kotlin	2021-08-20 13:10:12

#	User	Length	Language	Date
1	Jahid Hasan Imon	478	OCaml	2021-04-15 17:17:57

#	User	Length	Language	Date
1	Hidden user	705	Odin	2025-04-30 00:19:36

#	User	Length	Language	Date
1	Ingemar Ragnemalm	378	Pascal	2021-03-31 09:24:34
2	David Connolly	897	Pascal	2021-11-22 12:42:29

#	User	Length	Language	Date
1	Saito Ta	48	Perl	2024-04-08 08:21:26

#	User	Length	Language	Date
1	Renate	287	PHP	2021-04-19 10:26:53
2	Andre Wahyudi	667	PHP	2022-09-20 04:21:56

#	User	Length	Language	Date
1	Hakan Kjellerstrand	275	Prolog	2023-02-19 19:58:07

#	User	Length	Language	Date
1	Thomas Feld	179	Python 2	2021-05-21 06:21:20
2	Johan Lyts	184	Python 2	2021-04-03 19:04:42
3	Yanmarshus Bachtiar	237	Python 2	2021-05-29 03:53:52
4	Andreas Björklund	262	Python 2	2021-03-28 07:09:02
5	Agis Daniels	273	Python 2	2021-12-13 11:46:06
6	Andrei Stoica	334	Python 2	2021-09-09 10:30:35
7	Hasan Kalzi	360	Python 2	2021-03-29 11:47:33

#	User	Length	Language	Date
1	Clement Oh	83	Python 3	2023-07-03 13:24:52
2	Erik Heimdal	90	Python 3	2022-11-25 23:26:51
3	Wilmer Ansgariusson	90	Python 3	2024-10-29 14:38:08
4	Jonathan Ståhl	90	Python 3	2024-10-29 15:35:15
5	Charles Ancheta	91	Python 3	2023-03-27 06:26:45
6	Alexandre Charland	91	Python 3	2024-09-10 20:53:42
7	Si Jie Tan	91	Python 3	2025-12-19 05:16:58
8	Tommi Järvenpää	94	Python 3	2024-03-13 12:37:39
9	Hidden user	96	Python 3	2025-08-24 09:55:15
10	Morten Clausen	98	Python 3	2022-09-25 22:21:23

#	User	Length	Language	Date
1	Thomas Feld	57	Ruby	2023-01-02 13:27:57
2	dick move	58	Ruby	2022-11-09 21:33:38
3	Russell Ng	69	Ruby	2025-08-15 05:39:13
4	Alexander Bilde Pedersen	103	Ruby	2023-05-07 21:32:06
5	Hidden user	108	Ruby	2021-03-30 19:40:05
6	Régis Hanol	117	Ruby	2022-01-07 17:37:48
7	Jonathan Ogden	138	Ruby	2021-05-26 19:03:52
8	Klas af Geijerstam	153	Ruby	2021-04-07 15:46:02
9	Drew Wilson	210	Ruby	2023-05-24 16:08:31
10	TobiasZ	218	Ruby	2022-01-29 21:12:21

#	User	Length	Language	Date
1	Vincent Lagerros	231	Rust	2024-12-12 01:03:18
2	Bas Dirks	582	Rust	2022-01-03 14:50:40
3	David Rasch	607	Rust	2021-04-02 15:28:26
4	Kok Dith	643	Rust	2021-08-01 02:39:45
5	David Zacek	664	Rust	2021-04-08 01:06:45
6	Thomas	679	Rust	2022-11-04 16:26:21
7	Freek van Keulen	692	Rust	2021-07-10 17:17:00
8	Isak Jägberg	744	Rust	2021-05-05 13:49:16
9	Pankajkumar Patro	752	Rust	2024-07-22 19:36:46
10	Nathaniel Risum	795	Rust	2025-02-24 15:29:12

Solution running time distribution