Problem A
Hardwood Species — Problem Statistics

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Submissions	3571
Accepted submissions	1383
Submission ratio	38.73%
Authors	1024
Full solves [?]	905
Full solve Ratio	88.38%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.34 s	Bash	2023-10-10 15:46:41

#	User	Runtime	Language	Date
1	Hidden user	0.07 s	C	2022-04-14 12:40:37
2	001 นชิรัตน์ ราชบุรี (11295067493-0)	0.10 s	C	2024-10-01 06:14:53
3	Naveen Kumar S	0.10 s	C	2025-05-03 10:12:01
4	Larisa Elena Livadariu	0.11 s	C	2025-02-28 17:41:19
5	Hidden user	0.39 s	C	2025-03-29 12:45:45
6	Sami Al Chalati	0.53 s	C	2024-10-28 22:09:44

#	User	Runtime	Language	Date
1	traxex	0.28 s	C#	2024-05-26 17:16:45
2	Evan Revis	0.31 s	C#	2024-02-08 18:08:37
3	Benjamin Bilbeau	0.32 s	C#	2024-02-05 17:36:55
4	Brad Beise	0.32 s	C#	2024-02-12 14:58:20
5	Mikael Fiala-Lundström	0.68 s	C#	2021-06-28 00:55:12
6	Andriy Zyevakov	0.73 s	C#	2019-06-08 19:31:26

#	User	Runtime	Language	Date
1	Noah Weninger	0.08 s	C++	2018-12-19 01:48:05
2	Jacky Blois	0.10 s	C++	2023-07-28 15:26:33
3	Marc Phua	0.11 s	C++	2019-03-12 18:56:12
4	Wei Chin	0.11 s	C++	2019-09-17 06:59:20
5	Hyunjun Lee	0.11 s	C++	2022-11-12 07:14:49
6	Donald Dong	0.12 s	C++	2018-05-03 09:02:16
7	Clement Cheng Le Da	0.12 s	C++	2019-03-24 05:39:16
8	Joris Kerkhoff	0.12 s	C++	2019-05-16 22:06:36
9	Neev Kataria	0.12 s	C++	2024-01-04 15:11:28
10	Brad	0.12 s	C++	2024-06-14 22:05:22

#	User	Runtime	Language	Date
1	Hidden user	0.56 s	Common Lisp	2019-06-18 07:36:22

#	User	Runtime	Language	Date
1	Nope Nope	0.14 s	Go	2023-08-17 11:11:17
2	Markus Hansson	0.35 s	Go	2022-10-03 09:59:21
3	Silas Ulander	0.35 s	Go	2022-10-03 10:02:46
4	Norbert Voelker	0.36 s	Go	2021-08-20 00:23:20
5	Simon Fontana Oscarsson	0.36 s	Go	2022-10-10 14:31:19
6	Wei Guo	0.37 s	Go	2022-10-10 14:55:50
7	E N Martin	0.38 s	Go	2019-10-21 23:12:22
8	Jesper Lundgren	0.51 s	Go	2021-04-07 16:16:23

#	User	Runtime	Language	Date
1	Hidden user	0.99 s	Haskell	2019-11-04 21:08:50

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.25 s	Java	2022-05-13 11:18:27
2	Doug Goodman	0.47 s	Java	2017-12-19 20:30:00
3	Ada Clevinger	0.47 s	Java	2018-06-20 20:48:11
4	Jacob Harris Cryer Kragh	0.47 s	Java	2023-02-19 12:49:39
5	Emanuel Gonzalez	0.49 s	Java	2024-02-29 23:42:46
6	Kyle Senebouttarath	0.50 s	Java	2023-05-20 01:39:16
7	Alice Heavey	0.51 s	Java	2017-11-17 14:14:41
8	Jacqueline Eriksson	0.51 s	Java	2017-11-27 15:56:22
9	Hidden user	0.53 s	Java	2019-04-05 12:22:36
10	Eugin Pahk	0.53 s	Java	2022-09-30 00:35:15

#	User	Runtime	Language	Date
1	Hidden user	0.49 s	JavaScript (Node.js)	2024-04-23 23:20:00
2	Justin Stevens	0.64 s	JavaScript (Node.js)	2023-08-25 08:28:03

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.57 s	JavaScript (SpiderMonkey)	2023-02-11 01:27:36
2	Bjørn Chr. Soltvedt	0.60 s	JavaScript (SpiderMonkey)	2018-07-03 11:05:48

#	User	Runtime	Language	Date
1	Kelly Dance	0.56 s	Kotlin	2022-09-25 02:05:19
2	Phường Lên	0.63 s	Kotlin	2019-12-28 07:55:03
3	Damien Ryan Allison	0.77 s	Kotlin	2024-03-28 14:45:25
4	Bradley Richards	0.79 s	Kotlin	2023-10-20 16:57:26
5	Hidden user	0.84 s	Kotlin	2019-12-16 19:00:41
6	Nicholas Johnson	0.85 s	Kotlin	2020-04-07 02:15:11
7	Adam Rankin	0.98 s	Kotlin	2023-05-07 23:39:37

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.23 s	PHP	2023-10-13 23:27:02

#	User	Runtime	Language	Date
1	Agis Daniels	0.26 s	Python 2	2019-12-16 00:11:10
2	Christofer Ohlsson	0.27 s	Python 2	2017-11-19 12:07:43
3	Jesper Öqvist	0.27 s	Python 2	2018-11-09 01:05:12
4	Hermon Mulat	0.27 s	Python 2	2018-12-23 19:59:22
5	Lars Åström	0.27 s	Python 2	2019-06-25 18:37:18
6	Asger Hautop Drewsen	0.28 s	Python 2	2018-12-06 11:57:42
7	Yanmarshus Bachtiar	0.28 s	Python 2	2020-09-09 09:06:03
8	Cian Ruane	0.29 s	Python 2	2018-09-02 04:22:52
9	Oskar Haarklou Veileborg	0.29 s	Python 2	2018-11-01 09:59:42
10	Erik Tjøswold	0.32 s	Python 2	2019-02-11 14:46:35

#	User	Runtime	Language	Date
1	Hendrik Richter	0.21 s	Python 3	2018-12-17 11:11:18
2	Hidden user	0.21 s	Python 3	2019-10-19 23:20:19
3	Lee Tze Han	0.24 s	Python 3	2019-10-26 10:09:49
4	Petr	0.27 s	Python 3	2025-08-10 07:43:52
5	Денис Соболев	0.31 s	Python 3	2019-04-26 11:18:59
6	Dominic Berzin Chua Way Gin	0.35 s	Python 3	2025-04-18 05:23:14
7	Hidden user	0.36 s	Python 3	2019-11-05 22:06:57
8	Josh Taylor	0.36 s	Python 3	2022-10-21 03:49:59
9	Daniel	0.36 s	Python 3	2023-08-02 12:31:56
10	Chenzhang Hu	0.36 s	Python 3	2023-10-10 15:43:31

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.35 s	Ruby	2024-05-26 11:07:04
2	Thomas Feld	0.40 s	Ruby	2023-02-09 10:11:48
3	Clement Oh	0.49 s	Ruby	2024-02-22 17:12:32
4	Eleanor Janine Juan	0.56 s	Ruby	2025-03-01 09:53:49

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.04 s	Rust	2025-06-01 03:37:51
2	David Rasch	0.14 s	Rust	2020-09-07 15:33:07
3	Henry Jacobson	0.15 s	Rust	2022-10-24 17:39:01
4	Zack Groff	0.22 s	Rust	2019-08-07 18:58:54
5	楚廷 张	0.29 s	Rust	2024-10-29 05:57:34
6	Hidden user	0.30 s	Rust	2022-10-21 03:41:44
7	Bas Dirks	0.31 s	Rust	2022-01-20 20:32:44
8	Nicholas Bachmann Tjørnelund	0.40 s	Rust	2020-07-04 17:39:30
9	Eric Pinter	0.49 s	Rust	2021-11-28 06:39:58
10	Sarek Høverstad Skotåm	0.52 s	Rust	2022-02-19 22:07:59

#	User	Length	Language	Date
1	Chenzhang Hu	45	Bash	2025-09-13 02:38:36

#	User	Length	Language	Date
1	Sami Al Chalati	855	C	2024-10-28 22:18:18
2	Hidden user	912	C	2025-03-29 12:45:45
3	Naveen Kumar S	1847	C	2025-05-03 10:12:01
4	Hidden user	2091	C	2022-04-13 23:08:00
5	Larisa Elena Livadariu	2793	C	2025-02-28 17:41:19
6	001 นชิรัตน์ ราชบุรี (11295067493-0)	3687	C	2024-10-01 06:14:53

#	User	Length	Language	Date
1	traxex	346	C#	2024-05-26 17:16:45
2	Benjamin Bilbeau	969	C#	2023-09-05 16:55:50
3	Evan Revis	1077	C#	2024-02-08 18:08:37
4	Brad Beise	1087	C#	2024-02-12 14:58:20
5	Mikael Fiala-Lundström	1334	C#	2021-06-28 00:55:12
6	Andriy Zyevakov	8487	C#	2019-06-08 19:31:26

#	User	Length	Language	Date
1	Mathias Gernez	181	C++	2023-08-29 00:06:51
2	Evan Magill	223	C++	2023-08-29 16:19:48
3	Hidden user	257	C++	2020-03-07 17:40:33
4	Maciej Lewandowski	285	C++	2020-10-09 01:59:08
5	Markus Mathiasen	294	C++	2021-10-21 13:27:12
6	Alfred Stenborg	295	C++	2021-04-11 13:11:41
7	Eugene Lim Wen Han	296	C++	2019-03-20 10:15:24
8	Dustin Ward	296	C++	2020-10-26 23:51:18
9	Gaelan McMillan	300	C++	2022-11-05 21:14:31
10	Kok Seng Chiew	301	C++	2019-03-20 20:11:30

#	User	Length	Language	Date
1	Hidden user	778	Common Lisp	2019-06-18 00:44:45

#	User	Length	Language	Date
1	Nope Nope	436	Go	2023-08-17 11:11:17
2	E N Martin	491	Go	2019-10-21 23:12:22
3	Wei Guo	528	Go	2022-10-10 14:55:50
4	Norbert Voelker	541	Go	2021-08-20 00:23:20
5	Markus Hansson	597	Go	2022-10-03 09:00:55
6	Simon Fontana Oscarsson	638	Go	2022-10-08 22:49:56
7	Silas Ulander	642	Go	2022-10-03 09:20:05
8	Jesper Lundgren	727	Go	2021-04-07 16:16:23

#	User	Length	Language	Date
1	Hidden user	9301	Haskell	2019-11-04 21:08:50

#	User	Length	Language	Date
1	Doug Goodman	567	Java	2017-12-19 19:39:46
2	Eric Leow Yu Quan	579	Java	2021-01-02 13:39:23
3	Zach Tschetter	593	Java	2021-11-03 02:59:27
4	Emilie Hyslop	697	Java	2021-06-29 06:02:40
5	Logan Bishop	721	Java	2023-03-02 03:18:35
6	Ngo Ngoc Phuong Uyen	741	Java	2021-03-15 05:37:05
7	Emil Bak-Møller	753	Java	2019-03-23 19:48:11
8	Kristoffer Borgstrøm	757	Java	2019-03-25 13:14:29
9	Kenneth Seet	757	Java	2023-10-29 10:19:12
10	Mariann Løtvedt	783	Java	2022-07-12 18:42:16

#	User	Length	Language	Date
1	Justin Stevens	470	JavaScript (Node.js)	2023-08-25 08:28:03
2	Hidden user	566	JavaScript (Node.js)	2024-04-23 23:20:00

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	172	JavaScript (SpiderMonkey)	2023-02-11 01:27:36
2	Bjørn Chr. Soltvedt	339	JavaScript (SpiderMonkey)	2018-07-03 11:05:48

#	User	Length	Language	Date
1	Adam Rankin	278	Kotlin	2023-05-07 23:39:37
2	Bradley Richards	382	Kotlin	2023-03-08 15:23:39
3	Damien Ryan Allison	394	Kotlin	2024-03-28 03:22:51
4	Kelly Dance	442	Kotlin	2022-09-25 02:05:05
5	Nicholas Johnson	699	Kotlin	2020-04-07 02:15:11
6	Hidden user	816	Kotlin	2019-12-16 19:00:41
7	Phường Lên	834	Kotlin	2019-12-28 07:55:03

#	User	Length	Language	Date
1	Susanne Ragnemalm	746	PHP	2023-10-13 23:27:02

#	User	Length	Language	Date
1	Thomas Feld	138	Python 2	2019-09-13 08:51:14
2	Jesper Öqvist	202	Python 2	2018-11-09 01:05:12
3	Oskar Haarklou Veileborg	211	Python 2	2018-11-01 09:59:42
4	Agis Daniels	212	Python 2	2019-12-16 00:17:14
5	Asger Hautop Drewsen	234	Python 2	2018-12-06 11:57:42
6	Johan Lyts	239	Python 2	2019-12-11 21:59:25
7	Ciara Godwin	258	Python 2	2018-05-15 18:29:53
8	Lars Åström	262	Python 2	2019-06-25 18:37:18
9	Yanmarshus Bachtiar	262	Python 2	2020-09-09 09:06:03
10	Christofer Ohlsson	270	Python 2	2017-11-19 12:07:43

#	User	Length	Language	Date
1	Clement Oh	95	Python 3	2023-06-16 18:54:50
2	David Aldenbro	107	Python 3	2025-10-14 17:34:37
3	Zach Tschetter	124	Python 3	2022-10-28 20:36:49
4	Josh Henderson	127	Python 3	2023-04-14 16:10:09
5	Tai Tze Kin	147	Python 3	2024-05-03 22:48:33
6	Oskar Haarklou Veileborg	162	Python 3	2018-11-01 09:59:08
7	Emad Padyab	165	Python 3	2019-07-18 08:52:45
8	Eimhin McDonald	168	Python 3	2018-08-01 22:07:45
9	Alexandre Douard	168	Python 3	2024-03-13 16:53:00
10	Hidden user	170	Python 3	2022-12-14 03:28:39

#	User	Length	Language	Date
1	Thomas Feld	36	Ruby	2023-02-09 10:12:44
2	Chenzhang Hu	36	Ruby	2024-05-26 11:07:04
3	Clement Oh	126	Ruby	2024-02-22 17:12:32
4	Eleanor Janine Juan	330	Ruby	2025-03-01 09:57:34

#	User	Length	Language	Date
1	Bas Dirks	387	Rust	2022-01-20 20:32:44
2	楚廷 张	479	Rust	2024-10-29 05:57:34
3	Nicholas Bachmann Tjørnelund	530	Rust	2020-07-04 17:39:30
4	Hidden user	558	Rust	2022-10-21 03:41:44
5	Sarek Høverstad Skotåm	605	Rust	2022-02-19 22:07:59
6	Henry Jacobson	627	Rust	2022-10-24 17:56:30
7	David Rasch	689	Rust	2020-09-07 15:33:07
8	Zack Groff	887	Rust	2019-08-07 18:58:54
9	Eric Pinter	1180	Rust	2021-11-28 06:36:29
10	Vincent Lagerros	5678	Rust	2024-07-14 15:50:04

Solution running time distribution