Problem A
Anthony and Diablo — Problem Statistics

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Submissions	5931
Accepted submissions	2103
Submission ratio	35.46%
Authors	2176
Full solves [?]	1870
Full solve Ratio	85.94%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-10-18 06:06:18
2	Thomas Feld	0.01 s	Bash	2023-10-18 09:27:03

#	User	Runtime	Language	Date
1	Faisal Rahman	0.01 s	C#	2017-11-16 23:06:11
2	Vijaya Sekhar Gullapalli	0.02 s	C#	2017-11-20 14:39:52
3	Henrik Andersson	0.02 s	C#	2018-11-04 01:50:19
4	Armin Krauss	0.02 s	C#	2018-11-24 18:40:50
5	Regine Gorges	0.02 s	C#	2018-12-01 12:48:11
6	Sion Pixley	0.02 s	C#	2019-05-15 22:46:13
7	Joel Keleta	0.02 s	C#	2019-09-19 00:20:30
8	Peter Konnerup Moss	0.02 s	C#	2019-10-19 14:56:03
9	Julian Brandt	0.02 s	C#	2019-11-12 22:58:26
10	Linus Ekblom	0.02 s	C#	2019-12-16 10:19:19

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-18 09:17:29
2	Cole Holub	0.01 s	Common Lisp	2022-03-08 21:57:06
3	David Cawthon	0.02 s	Common Lisp	2019-04-12 20:15:17

#	User	Runtime	Language	Date
1	Sandro Stränsch	0.01 s	Dart	2025-04-21 17:29:19

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.06 s	F#	2023-04-02 16:10:57
2	William Skou Heidemann	0.06 s	F#	2024-04-01 22:45:02

#	User	Runtime	Language	Date
1	andersjoensen1@hotmail.com	0.07 s	Go	2018-12-17 17:06:41
2	Andriy Zyevakov	0.07 s	Go	2019-04-12 19:50:06
3	Christian Persson	0.08 s	Go	2019-10-17 20:12:32
4	Krzysztof Gibuła	0.08 s	Go	2021-07-03 16:07:13
5	Norbert Voelker	0.08 s	Go	2021-07-16 16:56:27

#	User	Runtime	Language	Date
1	Ranjith M	0.04 s	Java	2024-09-20 15:43:42
2	bewuwy	0.04 s	Java	2025-05-12 11:40:54
3	Alyssa Herbst	0.05 s	Java	2017-10-14 20:08:50
4	Alex Lind	0.05 s	Java	2017-10-14 20:12:53
5	Ali Zarrini	0.05 s	Java	2017-10-14 20:22:18
6	Chris Wu	0.05 s	Java	2017-10-14 20:23:00
7	Aldo Chow	0.05 s	Java	2017-10-14 20:23:07
8	Daniel Moyer	0.05 s	Java	2017-10-14 20:23:28
9	Nathaniel Lahn	0.05 s	Java	2017-10-14 20:24:39
10	Finn Lidbetter	0.05 s	Java	2017-10-14 20:26:11

#	User	Runtime	Language	Date
1	Peter Kedemo	0.41 s	JavaScript (Node.js)	2019-12-28 21:57:59
2	Tilo Hirsch	0.42 s	JavaScript (Node.js)	2020-07-14 05:13:25

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-16 02:17:27
2	Andrea Bianchessi	0.01 s	JavaScript (SpiderMonkey)	2017-11-03 18:00:15
3	Zachary DeStefano	0.02 s	JavaScript (SpiderMonkey)	2018-09-09 22:47:50
4	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-05-25 16:50:43
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2025-02-15 01:26:19

#	User	Runtime	Language	Date
1	Timothy Gaede	0.49 s	Julia	2024-04-23 21:17:23
2	Danny Robinson	0.59 s	Julia	2023-10-18 05:56:15

#	User	Runtime	Language	Date
1	Neil Harmon	0.19 s	Kotlin	2019-09-04 09:57:32
2	Phường Lên	0.19 s	Kotlin	2019-10-27 04:23:31
3	Hidden user	0.20 s	Kotlin	2017-11-15 05:02:57
4	Adam Rankin	0.20 s	Kotlin	2023-04-24 20:07:48
5	Peter Mikkelsen	0.21 s	Kotlin	2020-03-12 19:10:31
6	Nicholas Johnson	0.22 s	Kotlin	2020-01-30 20:31:29

#	User	Runtime	Language	Date
1	Matthew Lutze	0.00 s	OCaml	2020-07-28 06:09:58
2	Hidden user	0.00 s	OCaml	2020-09-15 09:41:12
3	Lim Li	0.00 s	OCaml	2021-05-16 08:40:19

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.13 s	Octave	2025-01-19 16:19:11

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-09-22 07:51:27
2	Wendirad Demelash	0.00 s	Pascal	2019-06-20 13:24:24
3	余恩樂4B28 Yu Yan Lok	0.00 s	Pascal	2020-03-01 15:35:06
4	陳昱諺4B01 Chan Cory Yuk Yin	0.00 s	Pascal	2020-03-01 15:40:31

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2018-09-22 19:34:51
2	Jonatan Nilsson	0.01 s	PHP	2021-03-19 13:09:02

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2018-12-07 17:09:42

#	User	Runtime	Language	Date
1	Haochen Chen	0.02 s	Python 2	2017-10-14 20:07:49
2	Andrew Lin	0.02 s	Python 2	2017-10-14 20:12:03
3	Ethan Arnold	0.02 s	Python 2	2017-10-14 20:12:29
4	Jeff Robertson	0.02 s	Python 2	2017-10-14 20:16:41
5	Xinhao Liu	0.02 s	Python 2	2017-10-14 20:28:34
6	Patrick Brady	0.02 s	Python 2	2017-10-14 20:29:55
7	Godmar Back	0.02 s	Python 2	2017-10-14 20:30:15
8	Maggie Liu	0.02 s	Python 2	2017-10-14 21:30:05
9	Euirim Choi	0.02 s	Python 2	2017-10-14 22:16:48
10	Sajad Sameti	0.02 s	Python 2	2017-10-14 22:19:44

#	User	Runtime	Language	Date
1	Kasper Borys	0.02 s	Python 3	2017-10-14 20:05:30
2	Victor Zheng	0.02 s	Python 3	2017-10-14 20:07:25
3	Tian Zhi Wang	0.02 s	Python 3	2017-10-14 20:09:28
4	Milan Radenovic	0.02 s	Python 3	2017-10-14 20:17:49
5	Wenzhang Qian	0.02 s	Python 3	2017-10-14 20:19:21
6	Andrew Maczugowski	0.02 s	Python 3	2017-10-14 20:21:32
7	Alan Fung	0.02 s	Python 3	2017-10-14 20:23:03
8	Amanpreet Singh	0.02 s	Python 3	2017-10-14 20:23:19
9	Justin Mah	0.02 s	Python 3	2017-10-14 20:27:55
10	Erika Fung	0.02 s	Python 3	2017-10-14 20:29:29

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Ruby	2018-06-24 23:07:45
2	Thomas Feld	0.06 s	Ruby	2023-02-02 13:14:04
3	Clement Oh	0.07 s	Ruby	2024-01-08 17:43:04

#	User	Length	Language	Date
1	Thomas Feld	63	Bash	2023-10-18 09:27:03
2	Danny Robinson	74	Bash	2023-10-18 06:06:18

#	User	Length	Language	Date
1	Siva Sharwan	204	C	2020-07-07 09:26:28
2	Roemer Caliboso	214	C	2024-08-27 22:54:41
3	Hidden user	223	C	2021-10-09 16:39:39
4	Sambit Palit	228	C	2020-10-09 03:09:17
5	Joriz ivann Villanueva	235	C	2021-02-25 17:16:58
6	Ghita Benboubker	241	C	2017-12-25 18:55:05
7	Coleton Kotch	243	C	2020-10-02 04:19:37
8	Axel Svensson	244	C	2022-06-28 15:42:58
9	Martin Neihoff	259	C	2019-09-22 17:10:08
10	Hidden user	261	C	2019-06-06 00:27:10

#	User	Length	Language	Date
1	Michael Damsgaard	251	C#	2024-12-06 09:52:16
2	Ruben Rystedt	259	C#	2024-11-18 21:22:20
3	Peter Konnerup Moss	447	C#	2019-10-19 14:56:03
4	Armin Krauss	490	C#	2018-11-24 18:40:50
5	Rune Engelbrecht Henriksen	510	C#	2020-10-01 21:20:56
6	Henrik Andersson	514	C#	2018-11-04 01:50:19
7	Zach Champeau	519	C#	2023-10-18 04:58:59
8	Joel Keleta	560	C#	2019-09-19 00:20:30
9	Regine Gorges	607	C#	2018-12-01 12:48:11
10	Julian Brandt	659	C#	2019-11-12 22:58:26

#	User	Length	Language	Date
1	Lukas Fried	137	C++	2023-06-22 15:37:12
2	Vu Duy Dung	167	C++	2017-10-21 09:13:18
3	Way Tan	174	C++	2018-11-28 04:18:18
4	Mohamed CHADAD	191	C++	2017-11-08 13:31:23
5	Jason Cannon	193	C++	2017-10-14 20:08:26
6	Johann Cruz	194	C++	2019-02-16 06:29:06
7	Haraldur Bjarni Davíðsson	194	C++	2019-05-03 22:18:55
8	David van der Vorm	199	C++	2019-12-10 17:17:33
9	Nguyen Tran Huu Duc	200	C++	2022-10-04 15:36:32
10	Michael Earl	201	C++	2017-10-27 08:48:51

#	User	Length	Language	Date
1	Hidden user	173	Common Lisp	2019-07-18 09:17:29
2	David Cawthon	291	Common Lisp	2019-04-12 20:15:17
3	Cole Holub	465	Common Lisp	2022-03-10 18:09:59

#	User	Length	Language	Date
1	Sandro Stränsch	400	Dart	2025-04-21 17:29:19

#	User	Length	Language	Date
1	William Skou Heidemann	324	F#	2024-04-01 22:45:02
2	Jacob Harris Cryer Kragh	449	F#	2023-04-02 16:10:57

#	User	Length	Language	Date
1	Andriy Zyevakov	254	Go	2019-04-12 19:50:06
2	andersjoensen1@hotmail.com	463	Go	2018-12-17 17:06:41
3	Krzysztof Gibuła	507	Go	2021-07-03 16:07:13
4	Norbert Voelker	793	Go	2021-07-16 16:56:27
5	Christian Persson	1540	Go	2019-10-17 20:12:32

#	User	Length	Language	Date
1	Ryan Yates	161	Haskell	2019-05-02 02:45:37
2	Steinar Simonnes	181	Haskell	2023-10-18 19:52:13
3	Esther Chong	214	Haskell	2017-11-24 13:59:09
4	Oskar Strömberg	226	Haskell	2019-09-26 16:43:55
5	Olle Eriksson	238	Haskell	2018-06-23 08:14:58
6	Hidden user	260	Haskell	2022-11-22 01:04:06
7	Agus Sentosa Hermawan	261	Haskell	2021-11-03 00:32:22
8	Hidden user	279	Haskell	2023-08-11 14:24:05
9	Samuel Kyletoft	297	Haskell	2020-10-17 15:06:10
10	Brent Yorgey	300	Haskell	2017-10-16 23:55:58

#	User	Length	Language	Date
1	John Copley	299	Java	2017-11-10 23:07:46
2	Aditya Patwardhan	308	Java	2021-10-19 03:29:57
3	Ilias Balah	319	Java	2019-12-14 16:58:30
4	Tyler Starr	324	Java	2018-10-22 22:50:42
5	Duncan Page	344	Java	2020-03-02 23:40:33
6	Minh Truong	348	Java	2018-12-04 12:23:24
7	Dev Singh	349	Java	2018-06-11 03:19:09
8	Jiru Xu	350	Java	2017-10-18 01:16:38
9	Pipes	350	Java	2022-09-27 17:13:51
10	Brian Spain	351	Java	2017-11-08 10:51:09

#	User	Length	Language	Date
1	Peter Kedemo	320	JavaScript (Node.js)	2019-12-28 21:57:59
2	Tilo Hirsch	550	JavaScript (Node.js)	2020-07-14 05:13:25

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	85	JavaScript (SpiderMonkey)	2023-05-25 16:54:23
2	Bjørn Chr. Soltvedt	153	JavaScript (SpiderMonkey)	2017-10-16 02:17:27
3	Zachary DeStefano	155	JavaScript (SpiderMonkey)	2018-09-09 22:47:50
4	Zach Tschetter	158	JavaScript (SpiderMonkey)	2025-02-15 01:26:19
5	Andrea Bianchessi	297	JavaScript (SpiderMonkey)	2017-11-03 18:00:15

#	User	Length	Language	Date
1	Danny Robinson	109	Julia	2023-10-18 05:56:15
2	Timothy Gaede	386	Julia	2024-04-23 21:17:23

#	User	Length	Language	Date
1	Hidden user	237	Kotlin	2017-11-15 05:02:57
2	Peter Mikkelsen	328	Kotlin	2020-03-12 19:10:31
3	Nicholas Johnson	337	Kotlin	2020-01-30 20:31:29
4	Phường Lên	366	Kotlin	2019-10-27 04:23:31
5	Adam Rankin	632	Kotlin	2023-04-24 20:07:48
6	Neil Harmon	658	Kotlin	2019-09-04 09:57:32

#	User	Length	Language	Date
1	Matthew Lutze	387	OCaml	2020-07-28 06:09:58
2	Hidden user	435	OCaml	2020-09-15 09:41:12
3	Lim Li	519	OCaml	2021-05-16 08:40:19

#	User	Length	Language	Date
1	Sven Rönnbäck	314	Octave	2025-01-19 16:19:11

#	User	Length	Language	Date
1	陳昱諺4B01 Chan Cory Yuk Yin	201	Pascal	2020-03-01 15:40:31
2	余恩樂4B28 Yu Yan Lok	220	Pascal	2020-03-01 15:35:06
3	Wendirad Demelash	325	Pascal	2019-06-20 13:24:24
4	Ingemar Ragnemalm	328	Pascal	2018-09-22 07:51:27

#	User	Length	Language	Date
1	Jonatan Nilsson	215	PHP	2021-03-19 13:09:02
2	Susanne Ragnemalm	268	PHP	2018-09-22 19:34:51

#	User	Length	Language	Date
1	Andriy Zyevakov	113	Prolog	2018-12-07 17:09:42

#	User	Length	Language	Date
1	Thomas Feld	132	Python 2	2019-09-06 13:15:15
2	Andreas Eisele	134	Python 2	2018-10-02 11:53:13
3	Jesper Öqvist	139	Python 2	2018-10-18 09:59:55
4	Kuan Wei Heng	148	Python 2	2018-12-06 07:52:59
5	Björn Magnusson	151	Python 2	2019-09-25 18:19:20
6	Lars Åström	151	Python 2	2019-09-25 20:36:46
7	Shakeel Samsudeen	156	Python 2	2020-06-30 21:11:14
8	Johan Lyts	157	Python 2	2020-01-04 13:57:17
9	Måns Magnusson	160	Python 2	2019-09-25 18:18:30
10	Maj Stenmark	160	Python 2	2019-09-25 22:00:45

#	User	Length	Language	Date
1	Benjamin Z White	92	Python 3	2023-05-14 11:15:34
2	Jayden Pahukula	92	Python 3	2023-10-19 06:35:46
3	Liam Kellogg	92	Python 3	2023-10-19 06:36:30
4	Lukas Kerren	93	Python 3	2024-05-17 23:40:17
5	David Aldenbro	93	Python 3	2025-10-15 20:52:21
6	Eduardo Vicente Petry	94	Python 3	2023-01-29 00:38:42
7	Thomas Draper	94	Python 3	2023-03-21 19:32:21
8	Charles Ancheta	94	Python 3	2023-03-25 06:28:51
9	Eugin Pahk	94	Python 3	2023-10-12 04:14:07
10	Tobias Bessler	104	Python 3	2024-05-05 01:48:33

#	User	Length	Language	Date
1	Thomas Feld	79	Ruby	2023-02-02 13:32:13
2	Clement Oh	106	Ruby	2024-01-08 17:43:04
3	Hidden user	184	Ruby	2018-06-24 23:07:45

#	User	Length	Language	Date
1	Vincent Lagerros	232	Rust	2024-11-17 13:33:06
2	Gabriella Gloria	462	Rust	2025-04-23 17:36:16
3	Herman Karlsson	463	Rust	2019-09-26 14:30:24
4	Florent Haratyk	469	Rust	2019-04-05 23:14:07
5	David Rasch	482	Rust	2021-01-30 16:13:11
6	Albert Rise Nielsen	497	Rust	2020-11-15 13:36:15
7	Bas Dirks	513	Rust	2022-01-10 15:33:54
8	Morten Raeburn	516	Rust	2021-11-21 02:44:51
9	Leonardo Gurgel	523	Rust	2021-06-09 04:30:43
10	Morrow	697	Rust	2020-04-22 08:36:00

Solution running time distribution