Problem B
Charting Progress — Problem Statistics

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Submissions	4537
Accepted submissions	1926
Submission ratio	42.45%
Authors	1590
Full solves [?]	1457
Full solve Ratio	91.64%

#	User	Runtime	Language	Date
1	Linus Yng	0.03 s	C#	2017-05-30 07:33:38
2	Ludwig Hedeby	0.04 s	C#	2019-11-05 17:50:10
3	Liam Mislej	0.04 s	C#	2020-08-10 16:43:04
4	Eric Weiss	0.04 s	C#	2022-09-14 20:21:32
5	Yuwono Bangun Nagoro	0.05 s	C#	2016-04-08 13:44:04
6	Timothy Ho	0.05 s	C#	2017-01-27 14:42:44
7	Tristan Close	0.05 s	C#	2017-04-02 03:13:44
8	Jie He	0.05 s	C#	2017-04-07 02:09:19
9	Stanislav Bivolarski	0.05 s	C#	2017-04-14 17:04:05
10	Tom Stocker	0.05 s	C#	2024-10-16 15:55:53

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	Common Lisp	2019-06-17 04:01:53
2	David Cawthon	0.14 s	Common Lisp	2019-05-18 01:06:15

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-11-05 08:54:59

#	User	Runtime	Language	Date
1	Norbert Voelker	0.10 s	Go	2021-05-17 23:06:48
2	Ciarán Ó hAoláin	0.44 s	Go	2017-12-09 09:47:50

#	User	Runtime	Language	Date
1	Isaac Arvestad	0.02 s	Haskell	2017-02-22 13:18:16
2	Brent Yorgey	0.02 s	Haskell	2018-01-14 07:05:48
3	Aurélien Pepin	0.02 s	Haskell	2019-09-04 07:02:48
4	Steinar Simonnes	0.02 s	Haskell	2024-02-12 18:02:08
5	Hidden user	0.03 s	Haskell	2015-02-10 05:50:07
6	Wilfried van Asten	0.03 s	Haskell	2015-12-19 20:14:03
7	Blake Hyde	0.03 s	Haskell	2016-06-10 03:01:15
8	Hidden user	0.03 s	Haskell	2019-10-05 16:40:03
9	Brandon Tang	0.03 s	Haskell	2023-06-10 09:32:38
10	Jan Hrček	0.04 s	Haskell	2021-03-26 10:40:59

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.07 s	Java	2022-01-16 15:23:12
2	Samuel Klingström	0.09 s	Java	2017-07-28 11:54:59
3	Steven Cheng	0.09 s	Java	2018-05-23 17:20:05
4	Nick Wu	0.10 s	Java	2016-04-26 03:18:13
5	Micah Stairs	0.10 s	Java	2016-09-20 20:38:13
6	Martijn Muijsers	0.10 s	Java	2016-10-12 07:26:48
7	Veniamin Viflyantsev	0.11 s	Java	2015-12-12 00:41:44
8	Michael Sullivan	0.11 s	Java	2016-02-14 21:08:07
9	Hidden user	0.11 s	Java	2016-03-21 19:25:24
10	Chen Shenghao	0.12 s	Java	2019-01-28 16:07:35

#	User	Runtime	Language	Date
1	Minh Trang Nguyen	0.12 s	JavaScript (Node.js)	2025-12-24 18:31:56
2	gigi	0.19 s	JavaScript (Node.js)	2022-12-07 22:32:46
3	Hidden user	0.52 s	JavaScript (Node.js)	2020-12-20 10:08:10
4	Khin Nyunt	0.53 s	JavaScript (Node.js)	2021-09-21 14:49:21

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2016-02-12 17:55:17
2	Peter Kedemo	0.03 s	JavaScript (SpiderMonkey)	2016-01-04 09:33:50
3	Michael Laszlo	0.04 s	JavaScript (SpiderMonkey)	2016-10-06 16:03:10
4	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-01-31 09:22:30
5	Jimmy Gustafsson	0.04 s	JavaScript (SpiderMonkey)	2024-08-26 08:38:44
6	Paul Leung	0.05 s	JavaScript (SpiderMonkey)	2017-06-09 15:50:51

#	User	Runtime	Language	Date
1	Timothy Gaede	0.53 s	Julia	2024-04-06 05:04:48

#	User	Runtime	Language	Date
1	Hidden user	0.26 s	Kotlin	2017-11-11 18:49:29
2	Neil Harmon	0.33 s	Kotlin	2019-07-16 07:26:53
3	Dayan Ruben Gonzalez	0.42 s	Kotlin	2020-09-30 18:03:51
4	Adam Rankin	0.42 s	Kotlin	2023-09-01 01:42:41

#	User	Runtime	Language	Date
1	Nguyen Hoang Trung	0.00 s	Pascal	2017-06-17 09:30:01
2	Ingemar Ragnemalm	0.01 s	Pascal	2023-07-06 15:44:14

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.22 s	Prolog	2023-03-02 19:47:20
2	Andriy Zyevakov	0.32 s	Prolog	2023-01-03 07:09:10

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.04 s	Python 2	2019-07-31 11:00:26
2	Wyatt Wismer	0.05 s	Python 2	2017-01-16 02:23:01
3	Andre Pratama	0.05 s	Python 2	2017-08-27 13:20:02
4	Eoin Davey	0.05 s	Python 2	2017-12-05 22:30:41
5	Johan Wind	0.05 s	Python 2	2018-03-29 18:29:48
6	Wang Zhi Jian	0.05 s	Python 2	2019-05-06 05:48:06
7	Tore Norderud	0.06 s	Python 2	2015-08-12 22:26:33
8	Christofer Ohlsson	0.06 s	Python 2	2015-08-23 15:23:20
9	Alvaro Silvino	0.06 s	Python 2	2016-04-08 18:16:41
10	Syafiq Al Atiiq	0.06 s	Python 2	2016-07-18 09:49:51

#	User	Runtime	Language	Date
1	Christian Lindeström	0.02 s	Python 3	2016-10-12 16:57:23
2	Ram Basnet	0.02 s	Python 3	2017-02-10 04:20:43
3	Joshua Guerin	0.02 s	Python 3	2017-04-22 20:26:33
4	Hyaline Seiche	0.02 s	Python 3	2017-05-13 16:21:30
5	Jón Steinn Elíasson	0.02 s	Python 3	2017-06-05 18:43:39
6	Ricky Rossi	0.02 s	Python 3	2017-07-05 18:54:43
7	Cian Ruane	0.02 s	Python 3	2017-08-25 14:53:53
8	Blaž Dobravec	0.02 s	Python 3	2017-08-26 16:07:44
9	Hakan Celik	0.02 s	Python 3	2017-11-29 10:28:31
10	Manu Lam	0.02 s	Python 3	2017-12-09 19:51:37

#	User	Runtime	Language	Date
1	Kok Dith	0.06 s	Ruby	2021-09-05 11:11:57
2	Hidden user	0.09 s	Ruby	2020-11-24 12:51:01
3	Bobby David	0.10 s	Ruby	2024-10-16 13:41:30
4	Thomas Feld	0.12 s	Ruby	2023-06-02 13:39:55

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2025-07-15 21:22:41
2	Isak Jägberg	0.01 s	Rust	2019-05-05 18:40:57
3	Bas Dirks	0.01 s	Rust	2022-01-08 18:47:37
4	Adam Yaser Sweilem	0.01 s	Rust	2025-02-25 19:06:55
5	David Rasch	0.03 s	Rust	2020-10-07 13:09:41
6	Pahlevi Fikri Auliya	0.03 s	Rust	2020-10-26 22:20:40

#	User	Length	Language	Date
1	Wu Haitao	566	C	2019-12-07 05:13:54
2	Drake Packard	574	C	2018-03-22 21:49:39
3	曾家祐	593	C	2021-11-18 01:23:31
4	曾家祐	593	C	2021-12-15 12:59:24
5	Jacob Sutton	802	C	2021-01-05 03:10:11
6	Alexander Saers	818	C	2016-10-07 20:21:38
7	Mikael K Eriksson	847	C	2021-05-22 11:52:56
8	JUNIOR	972	C	2019-01-23 13:44:12
9	Sami Al Chalati	1050	C	2024-07-18 16:38:04
10	LBWei	1155	C	2021-11-01 07:18:35

#	User	Length	Language	Date
1	Tom Stocker	164	C#	2024-10-18 22:06:48
2	Göran Andersson	496	C#	2022-05-22 17:40:04
3	Liam Mislej	882	C#	2020-08-10 16:43:04
4	Eric Weiss	948	C#	2022-09-14 20:21:32
5	Ludwig Hedeby	970	C#	2019-11-05 17:50:10
6	Linus Yng	1000	C#	2017-05-30 07:33:38
7	Tristan Close	1039	C#	2017-04-02 03:13:44
8	Drew Hudson	1451	C#	2024-10-15 19:32:42
9	Jie He	1689	C#	2017-04-07 02:09:19
10	Timothy Ho	1742	C#	2017-01-27 14:42:44

#	User	Length	Language	Date
1	Jomar Beltran	329	C++	2016-05-19 17:30:54
2	Giahuy Pham	360	C++	2019-09-29 02:59:24
3	Nicholas Rianto Putra	362	C++	2019-02-03 13:07:05
4	Christian Yongwhan Lim	387	C++	2023-06-02 21:36:03
5	Manshant Singh Kohli	404	C++	2016-05-28 05:26:13
6	Frederick Pek	415	C++	2021-07-04 11:13:59
7	Hyunjun Lee	426	C++	2022-10-27 13:24:25
8	Berlian Gabriel Mongkoginta	432	C++	2019-02-03 12:08:35
9	Trần Đăng Khương	443	C++	2019-10-02 08:04:43
10	Viktor Sieger	444	C++	2020-09-28 20:22:28

#	User	Length	Language	Date
1	Hidden user	743	Common Lisp	2019-06-17 04:01:53
2	David Cawthon	1572	Common Lisp	2019-05-18 01:06:15

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1088	F#	2022-11-05 08:54:59

#	User	Length	Language	Date
1	Ciarán Ó hAoláin	834	Go	2017-12-09 09:46:48
2	Norbert Voelker	873	Go	2021-05-17 23:06:48

#	User	Length	Language	Date
1	Brandon Tang	409	Haskell	2023-06-10 09:32:38
2	Jan Hrček	555	Haskell	2021-03-26 10:40:59
3	Robin Wyllie	623	Haskell	2025-10-04 19:10:09
4	Aurélien Pepin	662	Haskell	2019-09-04 07:02:48
5	Steinar Simonnes	719	Haskell	2024-02-12 18:02:08
6	Brent Yorgey	787	Haskell	2018-01-14 07:05:48
7	Isaac Arvestad	924	Haskell	2017-02-22 13:18:16
8	Blake Hyde	1011	Haskell	2016-06-10 03:01:15
9	Johan Meier	1283	Haskell	2016-12-30 14:41:11
10	Hidden user	2292	Haskell	2023-01-07 14:55:35

#	User	Length	Language	Date
1	Hidden user	662	Java	2016-01-10 11:12:13
2	Qritel Abdelilah	677	Java	2018-01-23 15:57:26
3	Kyar Nyo Aye	695	Java	2018-03-22 09:44:21
4	Jeroen van den Hoven	735	Java	2015-11-25 13:02:33
5	Stela Palii	755	Java	2018-03-12 19:11:42
6	Pedro Contipelli	789	Java	2017-01-24 01:19:32
7	Yway Chit Aung	789	Java	2017-05-25 02:33:38
8	Allan Lago	825	Java	2017-01-22 16:54:49
9	Tun Nanda Aung	827	Java	2017-05-26 09:50:47
10	Kelsey Wang	829	Java	2022-03-09 13:15:42

#	User	Length	Language	Date
1	gigi	640	JavaScript (Node.js)	2022-12-07 22:32:46
2	Khin Nyunt	860	JavaScript (Node.js)	2021-09-21 14:49:21
3	Minh Trang Nguyen	1158	JavaScript (Node.js)	2025-12-24 18:31:56
4	Hidden user	1400	JavaScript (Node.js)	2020-12-20 10:08:10

#	User	Length	Language	Date
1	Jimmy Gustafsson	173	JavaScript (SpiderMonkey)	2024-08-26 08:38:44
2	Bjørn Chr. Soltvedt	556	JavaScript (SpiderMonkey)	2016-02-12 17:55:17
3	Peter Kedemo	612	JavaScript (SpiderMonkey)	2016-01-04 09:33:50
4	Christian Pilegaard Cederquist	749	JavaScript (SpiderMonkey)	2023-01-31 09:22:30
5	Paul Leung	963	JavaScript (SpiderMonkey)	2017-06-09 15:50:51
6	Michael Laszlo	1141	JavaScript (SpiderMonkey)	2016-10-06 16:03:10

#	User	Length	Language	Date
1	Timothy Gaede	988	Julia	2024-04-06 05:04:48

#	User	Length	Language	Date
1	Dayan Ruben Gonzalez	548	Kotlin	2020-09-30 18:03:51
2	Hidden user	699	Kotlin	2017-11-11 18:49:29
3	Adam Rankin	801	Kotlin	2023-09-01 01:42:41
4	Neil Harmon	1049	Kotlin	2019-07-16 07:26:53

#	User	Length	Language	Date
1	Ingemar Ragnemalm	580	Pascal	2023-07-06 15:44:14
2	Nguyen Hoang Trung	642	Pascal	2017-06-17 09:30:01

#	User	Length	Language	Date
1	Hakan Kjellerstrand	449	Prolog	2023-03-02 19:47:20
2	Andriy Zyevakov	798	Prolog	2023-01-03 07:09:10

#	User	Length	Language	Date
1	Thomas Feld	243	Python 2	2019-09-16 08:47:20
2	Syafiq Al Atiiq	251	Python 2	2016-07-18 09:49:51
3	Lars Tveito	294	Python 2	2015-10-28 19:53:02
4	Daniel Voina	346	Python 2	2017-06-04 10:02:38
5	Tore Norderud	362	Python 2	2015-08-12 22:26:33
6	Hidden user	393	Python 2	2017-02-18 05:48:44
7	Shaheer Ahmed	397	Python 2	2017-12-10 22:59:53
8	Johan Wind	397	Python 2	2018-03-29 18:29:48
9	Greg Hamerly	466	Python 2	2017-12-03 12:33:59
10	Andreas Björklund	474	Python 2	2019-10-18 12:26:30

#	User	Length	Language	Date
1	Benjamin Z White	103	Python 3	2023-05-18 23:51:31
2	Tai Tze Kin	112	Python 3	2024-05-07 10:04:02
3	Guk Yi Siong	112	Python 3	2024-05-12 06:14:35
4	Ahmed Chamseddine	125	Python 3	2024-08-15 13:10:29
5	Farzam Abrishami	128	Python 3	2024-01-20 00:05:12
6	Manu Lam	184	Python 3	2017-12-09 19:51:37
7	Bryan Juniano	187	Python 3	2025-05-01 13:24:32
8	Arian Mohamed	193	Python 3	2024-06-18 19:35:33
9	Sergio Vieri	202	Python 3	2018-02-13 11:39:09
10	Casper Rysgaard	207	Python 3	2020-03-23 17:19:19

#	User	Length	Language	Date
1	Thomas Feld	85	Ruby	2023-06-02 13:44:19
2	Kok Dith	192	Ruby	2021-09-05 11:11:57
3	Hidden user	243	Ruby	2020-11-24 12:51:01
4	Bobby David	262	Ruby	2024-10-16 13:54:23

#	User	Length	Language	Date
1	Adam Yaser Sweilem	689	Rust	2025-02-25 19:06:55
2	David Rasch	745	Rust	2020-10-07 13:09:41
3	Bas Dirks	1116	Rust	2022-01-08 18:47:37
4	Isak Jägberg	1148	Rust	2019-05-05 18:40:57
5	Pahlevi Fikri Auliya	1972	Rust	2020-10-26 22:20:40
6	Vincent Lagerros	65322	Rust	2025-07-15 21:22:41

Solution running time distribution