Problem A
Doubleplusgood — Problem Statistics

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Submissions	1177
Accepted submissions	644
Submission ratio	54.72%
Authors	548
Full solves [?]	496
Full solve Ratio	90.51%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.05 s	C	2020-04-13 13:32:49
2	Sambit Palit	0.08 s	C	2020-10-30 22:49:45
3	Ivan Petrov	0.39 s	C	2019-03-22 07:53:21
4	Ioannis Br	0.46 s	C	2023-10-01 18:38:55

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.24 s	C#	2022-02-08 23:00:29
2	Caden Waters	0.31 s	C#	2019-03-23 20:25:22
3	Esty Crow	0.38 s	C#	2023-02-23 00:02:17
4	Anthony Ye	0.38 s	C#	2023-02-26 17:32:45
5	Casper Rødgaard	0.59 s	C#	2020-04-30 18:09:06

#	User	Runtime	Language	Date
1	Benjamin Qi	0.01 s	C++	2019-03-16 16:08:59
2	Viraj Maddur	0.01 s	C++	2019-03-16 16:27:10
3	Bryan Enrique González Vélez	0.01 s	C++	2019-03-16 17:46:02
4	Andrew Stelter	0.01 s	C++	2019-03-16 19:50:49
5	Hidden user	0.01 s	C++	2019-03-27 14:54:03
6	Bay Wei Heng	0.01 s	C++	2020-02-10 08:16:06
7	Kyle Chui	0.01 s	C++	2021-10-17 20:01:14
8	Yuesong Zou	0.01 s	C++	2022-01-17 23:24:42
9	Blake Celestian	0.01 s	C++	2022-02-22 04:26:21
10	Tan Yi Long	0.01 s	C++	2024-01-08 08:34:48

#	User	Runtime	Language	Date
1	Hidden user	0.36 s	Common Lisp	2019-07-25 16:41:50

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.51 s	F#	2023-03-19 09:57:55

#	User	Runtime	Language	Date
1	Norbert Voelker	0.11 s	Go	2021-08-20 16:17:59

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Haskell	2021-11-13 12:36:41
2	Steinar Simonnes	0.07 s	Haskell	2024-05-01 11:36:56
3	Brent Yorgey	1.61 s	Haskell	2019-04-20 17:40:11

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.08 s	Java	2022-11-25 21:43:32
2	Emil Bak-Møller	0.12 s	Java	2019-10-28 12:35:54
3	Simon Hallefält	0.14 s	Java	2023-02-04 15:13:19
4	Benjamin Reidys	0.15 s	Java	2019-03-16 22:44:18
5	Graeme Zinck	0.16 s	Java	2019-03-16 19:03:26
6	Alyssa Lawton	0.16 s	Java	2022-09-27 02:06:51
7	William Quiroga	0.18 s	Java	2019-03-19 21:08:01
8	Steven Cheng	0.18 s	Java	2020-04-13 19:26:05
9	Suhas T. Nagar	0.18 s	Java	2022-05-04 06:36:39
10	Ho Lyun Jeong	0.19 s	Java	2021-10-17 19:34:17

#	User	Runtime	Language	Date
1	August Danell Håkansson	0.33 s	JavaScript (Node.js)	2023-07-18 07:21:26
2	ChaosOp	0.59 s	JavaScript (Node.js)	2021-04-11 08:26:24

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.25 s	JavaScript (SpiderMonkey)	2023-05-26 05:46:50
2	Bjørn Chr. Soltvedt	1.47 s	JavaScript (SpiderMonkey)	2019-03-17 13:55:35

#	User	Runtime	Language	Date
1	Timothy Gaede	0.86 s	Julia	2024-05-15 03:33:10

#	User	Runtime	Language	Date
1	Adam Rankin	0.42 s	Kotlin	2023-09-20 03:14:39
2	Hidden user	0.58 s	Kotlin	2019-12-04 07:20:01

#	User	Runtime	Language	Date
1	Daniel Wolff	0.06 s	Python 2	2019-03-16 18:11:02
2	Finn Lidbetter	0.06 s	Python 2	2019-03-17 16:21:19
3	Jesper Öqvist	0.06 s	Python 2	2019-08-15 19:36:00
4	Maj Stenmark	0.06 s	Python 2	2019-09-17 15:27:35
5	Lars Åström	0.09 s	Python 2	2019-05-19 17:48:42
6	Jonatan Nilsson	0.11 s	Python 2	2019-09-17 14:54:06
7	Andreas Björklund	0.12 s	Python 2	2019-06-27 16:00:48
8	Vương Thiện Trung	0.14 s	Python 2	2019-04-28 00:46:46
9	Anshil Gandhi	0.14 s	Python 2	2019-11-14 18:33:12
10	Yanmarshus Bachtiar	0.14 s	Python 2	2020-09-09 12:37:06

#	User	Runtime	Language	Date
1	Nick Wu	0.05 s	Python 3	2023-06-29 06:56:36
2	Naveen Kumar S	0.05 s	Python 3	2025-11-11 16:38:45
3	Markus Krabbe Larsen	0.06 s	Python 3	2022-01-14 12:18:47
4	geedbee	0.07 s	Python 3	2025-10-22 05:15:16
5	Noah Hessen Bjerke	0.07 s	Python 3	2025-11-27 12:18:08
6	Johan Sannemo	0.08 s	Python 3	2021-10-25 21:19:27
7	Miorel Palii	0.08 s	Python 3	2022-03-07 10:56:54
8	Lawry Sorenson	0.08 s	Python 3	2025-02-21 23:48:04
9	Jacob Zhang	0.09 s	Python 3	2021-10-17 19:48:57
10	Albert Pala	0.09 s	Python 3	2023-11-17 16:58:44

#	User	Runtime	Language	Date
1	Thomas Feld	1.03 s	Ruby	2023-05-03 08:56:41

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-08-25 00:41:11
2	Ross Canning	0.01 s	Rust	2019-06-10 00:26:13
3	Pahlevi Fikri Auliya	0.05 s	Rust	2021-02-27 22:29:00
4	Dan Yang	0.08 s	Rust	2019-03-26 00:13:29
5	Niklas Sandén	0.13 s	Rust	2023-02-04 11:34:14
6	Bas Dirks	0.14 s	Rust	2022-02-05 12:09:49

#	User	Length	Language	Date
1	Bergur Snorrason	1939	C	2020-04-13 13:32:49
2	Ioannis Br	2539	C	2023-10-01 18:40:45
3	Sambit Palit	3061	C	2020-10-30 22:49:45
4	Ivan Petrov	3784	C	2019-03-22 07:53:21

#	User	Length	Language	Date
1	Esty Crow	738	C#	2023-02-23 00:24:48
2	Anthony Ye	817	C#	2023-02-26 17:32:45
3	Caden Waters	2206	C#	2019-03-23 20:25:22
4	Mikael Fiala-Lundström	2248	C#	2022-02-08 23:00:29
5	Casper Rødgaard	2655	C#	2020-04-30 18:09:06

#	User	Length	Language	Date
1	Jason Cannon	484	C++	2019-12-10 15:54:24
2	Michael Pfeifer	537	C++	2019-03-16 16:15:50
3	Markus Mathiasen	546	C++	2022-01-20 12:30:16
4	Ritwin Narra	559	C++	2025-10-29 01:41:12
5	Alexander Skidanov	581	C++	2024-11-18 18:32:47
6	Armen Andreasyan	588	C++	2019-03-20 16:40:18
7	Igor Silva	604	C++	2019-03-16 23:22:58
8	Víctor Hugo Meirelles Silva	607	C++	2019-03-16 20:13:44
9	Rodrigo Weigert	619	C++	2019-03-16 16:25:22
10	Jerry Zhu	629	C++	2019-03-16 17:22:07

#	User	Length	Language	Date
1	Hidden user	1009	Common Lisp	2019-07-25 16:31:55

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	2012	F#	2023-03-19 09:57:55

#	User	Length	Language	Date
1	Norbert Voelker	1101	Go	2021-08-20 16:17:59

#	User	Length	Language	Date
1	Steinar Simonnes	798	Haskell	2024-05-01 11:36:56
2	Brent Yorgey	902	Haskell	2019-04-20 17:40:11
3	Hidden user	13513	Haskell	2021-11-13 12:36:41

#	User	Length	Language	Date
1	Andreas Guldborg Hansen	702	Java	2021-12-05 14:49:37
2	Sam Huynh	774	Java	2021-07-29 10:16:26
3	Caleb Reath	898	Java	2019-03-16 17:10:56
4	Benjamin Reidys	911	Java	2019-03-16 17:34:28
5	Suhas T. Nagar	914	Java	2022-05-04 06:36:39
6	Daniel Sutantyo	919	Java	2021-07-30 09:52:54
7	Jazz Loffredo	926	Java	2020-03-28 14:34:47
8	Markus Bao	946	Java	2024-01-06 11:48:31
9	Emilie Hyslop	997	Java	2021-07-30 10:40:37
10	Simon Hallefält	1012	Java	2023-02-04 15:13:19

#	User	Length	Language	Date
1	ChaosOp	1050	JavaScript (Node.js)	2021-04-11 08:26:24
2	August Danell Håkansson	1374	JavaScript (Node.js)	2023-07-18 07:21:26

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	543	JavaScript (SpiderMonkey)	2023-05-26 05:46:50
2	Bjørn Chr. Soltvedt	24630	JavaScript (SpiderMonkey)	2019-03-17 13:55:35

#	User	Length	Language	Date
1	Timothy Gaede	652	Julia	2024-05-15 03:33:10

#	User	Length	Language	Date
1	Adam Rankin	685	Kotlin	2023-09-20 03:14:39
2	Hidden user	695	Kotlin	2019-12-04 07:20:01

#	User	Length	Language	Date
1	Thomas Feld	173	Python 2	2019-10-04 15:24:43
2	Kuan Wei Heng	250	Python 2	2019-05-07 11:47:07
3	Lars Åström	287	Python 2	2019-05-19 17:48:42
4	Andreas Björklund	299	Python 2	2019-06-27 16:00:48
5	Maj Stenmark	312	Python 2	2019-09-17 15:27:35
6	Jonatan Nilsson	318	Python 2	2019-09-17 14:54:06
7	Daniel Wolff	320	Python 2	2019-03-16 18:11:02
8	Anshil Gandhi	330	Python 2	2019-11-14 18:33:12
9	Jesper Öqvist	363	Python 2	2019-08-15 19:36:00
10	Saeed Askari	427	Python 2	2019-03-16 17:38:06

#	User	Length	Language	Date
1	Benjamin Z White	148	Python 3	2023-05-12 08:19:21
2	Peter Stauder	161	Python 3	2022-08-20 13:11:53
3	Dries Wedda	208	Python 3	2023-05-08 22:10:28
4	Hidden user	222	Python 3	2021-11-24 15:33:17
5	Ahmed Chamseddine	232	Python 3	2024-12-18 23:10:23
6	Tai Tze Kin	236	Python 3	2024-05-04 11:53:14
7	Jonathan Dastrup	238	Python 3	2024-10-04 21:02:57
8	Kelly Dance	239	Python 3	2024-10-04 03:58:43
9	Noah Hessen Bjerke	240	Python 3	2025-11-27 12:18:08
10	Hidden user	249	Python 3	2022-12-01 17:13:45

#	User	Length	Language	Date
1	Thomas Feld	115	Ruby	2023-05-03 08:56:41

#	User	Length	Language	Date
1	Vincent Lagerros	767	Rust	2024-08-24 23:56:25
2	Dan Yang	1161	Rust	2019-03-26 00:13:29
3	Bas Dirks	1419	Rust	2022-02-05 12:09:49
4	Pahlevi Fikri Auliya	2270	Rust	2021-02-27 22:29:00
5	Ross Canning	3278	Rust	2019-06-10 00:26:13
6	Niklas Sandén	26326	Rust	2023-02-04 11:34:14

Solution running time distribution