Problem A
Math Homework — Problem Statistics

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Submissions	4068
Accepted submissions	1742
Submission ratio	42.82%
Authors	1512
Accepted authors	1401
Author ratio	92.66%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.01 s	C	2019-06-14 17:42:52
2	Eyleifur Bjarkason	0.01 s	C	2019-10-17 19:24:50
3	Dick Jessen William	0.01 s	C	2019-11-02 05:54:55
4	Yao Wang	0.01 s	C	2019-11-09 22:57:32
5	Sambit Palit	0.01 s	C	2020-09-20 00:28:22
6	Sujan Roy	0.01 s	C	2020-09-27 09:28:11
7	Mikael K Eriksson	0.01 s	C	2021-01-29 07:48:39
8	Gabriel Stanculescu	0.01 s	C	2021-10-03 11:08:31
9	SteamsDev	0.01 s	C	2021-11-14 20:53:26
10	Sergio Huhuhu	0.01 s	C	2022-01-30 09:43:25

#	User	Runtime	Language	Date
1	Henrik Hallbert	0.05 s	C#	2021-12-20 14:46:50
2	Gurpartap Singh Bhatti	0.09 s	C#	2020-04-18 17:48:43
3	Eric Weiss	0.09 s	C#	2022-08-22 21:12:58
4	Marcus Malmberg	0.10 s	C#	2023-04-20 13:07:46
5	Pontus Lindblom	0.10 s	C#	2024-07-23 23:26:07
6	Mikael Fiala-Lundström	0.11 s	C#	2021-04-18 22:06:25
7	Frian Tampake	0.11 s	C#	2023-03-15 05:28:18
8	Urša Kumelj	0.11 s	C#	2024-02-21 15:54:28
9	Roberto Rodriguez Giorgetti	0.11 s	C#	2024-10-02 19:32:51
10	Umar Rasyid	0.12 s	C#	2025-07-05 21:50:12

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C++	2019-06-15 08:23:24
2	Alexander Kravberg	0.00 s	C++	2022-04-23 15:42:19
3	Ian DeHaan	0.01 s	C++	2019-06-12 21:42:46
4	Willson Wijaya	0.01 s	C++	2019-06-14 14:55:44
5	Eimhin McDonald	0.01 s	C++	2019-06-17 23:22:56
6	Dmitry Lyubshin	0.01 s	C++	2019-06-29 06:24:40
7	Marc Phua	0.01 s	C++	2019-07-01 19:23:46
8	Kristoffer Åhgren	0.01 s	C++	2019-07-07 13:24:53
9	Tomas Lagland	0.01 s	C++	2019-07-16 17:56:27
10	Johan Wind	0.01 s	C++	2019-07-26 17:34:48

#	User	Runtime	Language	Date
1	Hidden user	0.08 s	Common Lisp	2019-07-02 17:17:06

#	User	Runtime	Language	Date
1	Bobby Jonathan	0.06 s	Dart	2023-07-30 16:11:21

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Go	2024-04-08 12:02:21
2	Norbert Voelker	0.11 s	Go	2021-04-07 16:35:06
3	Nick Jarvis	0.11 s	Go	2023-01-16 23:40:28

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Haskell	2021-11-19 10:43:26
2	William Ball	0.01 s	Haskell	2022-05-30 06:40:04
3	Jan Hrček	0.02 s	Haskell	2021-03-16 05:50:21
4	Hidden user	0.03 s	Haskell	2022-12-10 22:28:48
5	Hidden user	0.04 s	Haskell	2019-08-28 18:03:15
6	Øyvind Almli	0.05 s	Haskell	2023-01-18 12:38:44
7	Steinar Simonnes	0.05 s	Haskell	2024-02-04 18:25:09
8	Anders Aarsæther	0.06 s	Haskell	2021-11-19 13:09:32
9	Intrets	0.52 s	Haskell	2019-09-02 13:15:58
10	Hidden user	0.56 s	Haskell	2021-01-11 18:10:47

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.07 s	Java	2022-12-19 21:15:42
2	Guangyi Zhou	0.11 s	Java	2025-02-02 15:54:22
3	Liam Keliher	0.13 s	Java	2019-06-26 01:09:59
4	Bjørn Dons	0.14 s	Java	2019-07-25 21:52:26
5	Dominic Reed	0.14 s	Java	2021-01-16 01:42:05
6	Desireé af Geijerstam	0.14 s	Java	2021-06-20 10:38:51
7	Hidden user	0.17 s	Java	2022-06-16 23:01:58
8	Bowen Yang	0.19 s	Java	2023-05-22 20:20:25
9	Ranjith M	0.20 s	Java	2023-12-10 19:00:52
10	Ku Brian	0.20 s	Java	2024-05-16 04:12:04

#	User	Runtime	Language	Date
1	Hidden user	0.18 s	JavaScript (Node.js)	2022-04-26 22:49:05
2	Hidden user	0.27 s	JavaScript (Node.js)	2024-11-04 07:26:33
3	Hidden user	0.28 s	JavaScript (Node.js)	2023-03-19 23:57:07
4	Chris Wong	0.48 s	JavaScript (Node.js)	2022-01-17 18:37:10
5	Andoko Chandra	0.49 s	JavaScript (Node.js)	2020-10-22 19:50:23
6	Peter Kedemo	0.66 s	JavaScript (Node.js)	2019-12-23 10:33:42
7	Mike Digan	0.68 s	JavaScript (Node.js)	2021-03-04 19:55:04
8	Niamh Limerick	0.70 s	JavaScript (Node.js)	2022-02-16 19:52:50
9	Jira Angel	0.71 s	JavaScript (Node.js)	2021-04-15 08:24:51

#	User	Runtime	Language	Date
1	Christian Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-01-18 16:11:00
2	Bjørn Chr. Soltvedt	0.07 s	JavaScript (SpiderMonkey)	2019-06-13 10:42:21
3	Peter Menyes	0.07 s	JavaScript (SpiderMonkey)	2021-10-10 21:05:19
4	Jimmy Gustafsson	0.09 s	JavaScript (SpiderMonkey)	2024-07-27 01:22:32
5	Zach Tschetter	0.12 s	JavaScript (SpiderMonkey)	2025-02-02 00:30:20

#	User	Runtime	Language	Date
1	Timothy Gaede	0.97 s	Julia	2024-03-27 03:24:44

#	User	Runtime	Language	Date
1	Hidden user	0.24 s	Kotlin	2019-12-20 17:53:03
2	Martijn Muijsers	0.29 s	Kotlin	2024-05-31 22:09:45
3	Adam Rankin	0.39 s	Kotlin	2023-05-03 05:23:03
4	ck1080906陳亮宇	0.55 s	Kotlin	2020-04-18 08:23:07
5	Neil Harmon	0.62 s	Kotlin	2019-09-03 15:23:34
6	5Head	0.63 s	Kotlin	2019-09-18 01:35:28
7	Phường Lên	0.70 s	Kotlin	2019-10-27 00:11:47
8	Erik Boman	0.94 s	Kotlin	2021-07-20 21:35:23

#	User	Runtime	Language	Date
1	Lars Åström	0.05 s	OCaml	2020-03-20 14:04:10

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.05 s	Pascal	2019-12-01 10:31:31

#	User	Runtime	Language	Date
1	Renate	0.02 s	PHP	2021-07-15 02:42:50
2	Connor Billings	0.05 s	PHP	2020-08-04 00:28:58
3	Jesper Sundin	0.05 s	PHP	2024-09-11 00:35:05
4	Jonas Lindenskov Nielsen	0.44 s	PHP	2019-11-12 16:33:20

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.26 s	Prolog	2023-02-17 11:56:19

#	User	Runtime	Language	Date
1	Godmar Back	0.07 s	Python 2	2019-06-11 21:22:04
2	Andreas Björklund	0.07 s	Python 2	2019-06-13 20:14:51
3	Johan Lyts	0.07 s	Python 2	2019-06-16 14:57:28
4	Aarav Singh	0.07 s	Python 2	2019-06-28 09:35:07
5	Thomas Feld	0.07 s	Python 2	2019-09-03 15:48:30
6	Andrei Stoica	0.07 s	Python 2	2020-10-30 22:33:31
7	Hidden user	0.09 s	Python 2	2019-08-02 15:05:45
8	Casper Rysgaard	0.09 s	Python 2	2019-10-01 10:15:21
9	Yanmarshus Bachtiar	0.09 s	Python 2	2019-10-29 05:22:01
10	Oskar Haarklou Veileborg	0.10 s	Python 2	2019-09-26 19:02:12

#	User	Runtime	Language	Date
1	Ram Basnet	0.04 s	Python 3	2019-09-12 08:23:18
2	Subramanian Ramasamy	0.05 s	Python 3	2019-08-30 14:25:43
3	Hidden user	0.05 s	Python 3	2019-11-19 06:03:04
4	Dominic Berzin Chua Way Gin	0.05 s	Python 3	2025-04-17 14:04:19
5	Isaac Lee	0.06 s	Python 3	2019-07-15 19:13:01
6	Vincent Tandya	0.06 s	Python 3	2019-08-28 20:58:17
7	Paul Erith	0.06 s	Python 3	2019-08-29 12:20:18
8	Ian Howell	0.06 s	Python 3	2019-09-04 00:43:14
9	Jacob Raymond	0.06 s	Python 3	2019-09-13 01:36:46
10	Enrique Casillas	0.06 s	Python 3	2019-10-08 06:07:36

#	User	Runtime	Language	Date
1	Thomas Feld	0.18 s	Ruby	2023-05-24 11:03:15
2	Kok Dith	0.23 s	Ruby	2021-08-20 15:23:54
3	Eugen Neagoe	0.36 s	Ruby	2023-04-12 20:14:44

#	User	Runtime	Language	Date
1	Magix	0.00 s	Rust	2022-06-17 20:46:35
2	Vincent Lagerros	0.00 s	Rust	2025-02-28 14:09:18
3	Bas Dirks	0.01 s	Rust	2022-01-06 18:50:46
4	Robert Janczewski	0.04 s	Rust	2020-02-05 20:06:53
5	Thomas Hügel	0.04 s	Rust	2020-03-09 11:21:13
6	Pahlevi Fikri Auliya	0.04 s	Rust	2020-11-19 00:22:38
7	Arnab De	0.04 s	Rust	2022-10-28 08:56:01
8	Pauline Aigueperse	0.04 s	Rust	2024-10-15 16:23:55
9	David Rasch	0.05 s	Rust	2022-05-30 10:04:47
10	Artur Khuziakhmetov	0.05 s	Rust	2022-08-07 10:29:39

#	User	Runtime	Language	Date
1	Douglas Porter	0.21 s	TypeScript	2024-08-05 15:57:50

#	User	Length	Language	Date
1	Oussama Bourqadi	332	C	2019-08-13 19:32:27
2	Alberto Sandri	373	C	2021-04-07 22:19:46
3	Jarod Keene	382	C	2021-01-26 03:44:14
4	Hidden user	382	C	2021-06-12 09:24:10
5	FISH MARS & 芋仔	385	C	2022-12-09 10:09:44
6	Mikael K Eriksson	400	C	2021-01-29 07:48:39
7	Oussama Hichou	421	C	2019-08-13 14:00:57
8	Bergur Snorrason	445	C	2019-06-14 17:42:52
9	Gabriel Stanculescu	451	C	2021-10-03 11:08:31
10	PhilCampbell	451	C	2021-02-17 13:44:19

#	User	Length	Language	Date
1	Pavel Mardouski	802	C#	2021-01-15 04:47:46
2	Göran Andersson	839	C#	2022-05-16 19:52:18
3	Eric Weiss	862	C#	2022-08-22 21:12:58
4	Nikolai Valkamo	950	C#	2021-12-22 18:45:06
5	Gustav Junedahl	977	C#	2022-04-25 11:34:59
6	Elvira Urberg	1055	C#	2022-06-12 12:03:19
7	Steven Albertus Woodward	1079	C#	2019-10-04 09:35:51
8	Makame Makame	1124	C#	2022-03-06 18:19:55
9	Gurpartap Singh Bhatti	1128	C#	2020-04-18 17:48:43
10	Jacob Harris Cryer Kragh	1143	C#	2022-10-16 14:34:06

#	User	Length	Language	Date
1	Frans Meulenbroeks	217	C++	2025-02-10 17:55:36
2	陳厚竹	324	C++	2022-12-04 09:02:30
3	陳柏余	330	C++	2021-10-03 04:11:14
4	DEAREN HIPPY	333	C++	2021-10-31 02:44:26
5	陳羿嘉	334	C++	2022-10-02 07:24:21
6	Way Tan	334	C++	2020-01-30 13:03:34
7	小不點	334	C++	2023-01-26 06:49:05
8	212班05號周宥任	336	C++	2022-10-16 08:42:23
9	Markus Mathiasen	337	C++	2021-12-14 08:22:22
10	林育霆	338	C++	2023-12-20 13:46:34

#	User	Length	Language	Date
1	Hidden user	727	Common Lisp	2019-07-02 17:07:07

#	User	Length	Language	Date
1	Bobby Jonathan	627	Dart	2023-07-30 16:11:21

#	User	Length	Language	Date
1	Andriy Zyevakov	701	Go	2024-04-08 12:02:21
2	Norbert Voelker	914	Go	2021-04-07 16:35:06
3	Nick Jarvis	942	Go	2023-01-16 23:40:28

#	User	Length	Language	Date
1	Steinar Simonnes	340	Haskell	2024-02-04 18:25:09
2	Øyvind Almli	379	Haskell	2023-01-18 12:43:41
3	Hidden user	441	Haskell	2021-01-11 18:10:47
4	Hidden user	481	Haskell	2019-08-28 18:03:15
5	Anders Aarsæther	536	Haskell	2021-11-19 13:09:32
6	Jan Hrček	558	Haskell	2021-03-16 05:50:21
7	Hidden user	704	Haskell	2021-11-19 09:16:32
8	William Ball	708	Haskell	2022-05-30 06:40:04
9	Hidden user	1065	Haskell	2022-12-10 22:28:48
10	Intrets	1869	Haskell	2019-09-02 13:15:58

#	User	Length	Language	Date
1	Husnul Hakim	506	Java	2024-06-25 03:33:48
2	Soldà Federico	550	Java	2019-08-09 21:55:01
3	Caeden Whitaker	566	Java	2020-08-06 02:03:39
4	Anton Sandin	569	Java	2022-05-02 11:18:41
5	Doug Goodman	578	Java	2019-06-14 18:27:34
6	James Gamboli	582	Java	2021-09-15 02:02:05
7	Bryan Hill	586	Java	2020-09-10 01:48:11
8	Nick Hargrove	591	Java	2021-11-24 09:09:15
9	Aditya Patwardhan	650	Java	2022-07-20 17:36:47
10	CARENS KURNIAWAN WIJAYA	663	Java	2022-07-22 17:58:46

#	User	Length	Language	Date
1	Hidden user	537	JavaScript (Node.js)	2023-03-19 23:57:07
2	Peter Kedemo	687	JavaScript (Node.js)	2019-12-23 10:33:42
3	Hidden user	852	JavaScript (Node.js)	2024-11-04 07:26:33
4	Chris Wong	902	JavaScript (Node.js)	2022-01-17 18:37:10
5	Jira Angel	917	JavaScript (Node.js)	2021-04-15 08:24:51
6	Mike Digan	970	JavaScript (Node.js)	2021-03-04 19:55:04
7	Niamh Limerick	1038	JavaScript (Node.js)	2022-02-16 19:52:50
8	Andoko Chandra	1129	JavaScript (Node.js)	2020-10-22 19:50:23
9	Hidden user	2773	JavaScript (Node.js)	2022-04-26 22:49:05

#	User	Length	Language	Date
1	Jimmy Gustafsson	176	JavaScript (SpiderMonkey)	2024-07-27 01:21:18
2	Zach Tschetter	291	JavaScript (SpiderMonkey)	2025-02-02 00:30:20
3	Peter Menyes	364	JavaScript (SpiderMonkey)	2021-10-10 21:05:19
4	Christian Cederquist	471	JavaScript (SpiderMonkey)	2023-01-18 16:11:00
5	Bjørn Chr. Soltvedt	583	JavaScript (SpiderMonkey)	2019-06-13 10:42:21

#	User	Length	Language	Date
1	Timothy Gaede	1245	Julia	2024-03-27 03:24:44

#	User	Length	Language	Date
1	Adam Rankin	426	Kotlin	2023-05-03 05:23:03
2	Phường Lên	699	Kotlin	2019-10-27 00:11:47
3	Hidden user	732	Kotlin	2019-12-20 17:53:03
4	5Head	747	Kotlin	2019-09-18 01:35:28
5	Martijn Muijsers	817	Kotlin	2024-05-31 22:09:45
6	ck1080906陳亮宇	846	Kotlin	2020-04-18 08:23:07
7	Erik Boman	877	Kotlin	2021-07-20 21:35:23
8	Neil Harmon	1559	Kotlin	2019-09-03 15:23:34

#	User	Length	Language	Date
1	Lars Åström	439	OCaml	2020-03-20 14:04:10

#	User	Length	Language	Date
1	Ingemar Ragnemalm	453	Pascal	2019-12-01 10:31:31

#	User	Length	Language	Date
1	Jonas Lindenskov Nielsen	519	PHP	2019-11-12 16:33:20
2	Renate	592	PHP	2021-07-15 02:42:50
3	Jesper Sundin	851	PHP	2024-09-11 00:35:05
4	Connor Billings	1148	PHP	2020-08-04 00:32:16

#	User	Length	Language	Date
1	Hakan Kjellerstrand	350	Prolog	2023-02-17 11:56:19

#	User	Length	Language	Date
1	Thomas Feld	215	Python 2	2019-09-03 15:48:30
2	Johan Lyts	283	Python 2	2019-06-16 14:51:24
3	Oskar Haarklou Veileborg	297	Python 2	2019-09-26 19:02:12
4	Enzio Kam Hai Hong	305	Python 2	2019-08-31 19:07:06
5	Badr Kamel	311	Python 2	2020-05-03 11:39:59
6	Aarav Singh	315	Python 2	2019-06-28 09:35:07
7	Andreas Björklund	322	Python 2	2019-06-13 20:14:51
8	Casper Rysgaard	334	Python 2	2019-10-01 10:15:21
9	Godmar Back	370	Python 2	2019-06-11 21:22:04
10	Yanmarshus Bachtiar	415	Python 2	2019-10-29 05:22:01

#	User	Length	Language	Date
1	Kévin Dubrulle	153	Python 3	2024-12-05 20:03:25
2	Lukas Kerren	156	Python 3	2024-03-20 22:58:37
3	Benjamin Z White	179	Python 3	2023-05-19 17:40:15
4	Guk Yi Siong	179	Python 3	2023-06-12 21:06:14
5	Simon Baeckelant	179	Python 3	2024-12-02 07:51:56
6	Thibault Raffaillac	199	Python 3	2023-08-14 13:42:13
7	Ahmed Chamseddine	201	Python 3	2024-08-02 18:39:34
8	Theta Back	207	Python 3	2022-06-14 17:55:26
9	Yohannes Melese	212	Python 3	2021-06-23 08:44:26
10	Alan Bright	216	Python 3	2024-12-20 11:17:58

#	User	Length	Language	Date
1	Thomas Feld	119	Ruby	2023-05-24 11:13:09
2	Eugen Neagoe	371	Ruby	2023-04-12 18:43:22
3	Kok Dith	687	Ruby	2021-08-20 15:23:54

#	User	Length	Language	Date
1	Antoine Bauri	613	Rust	2021-03-08 21:50:44
2	Vincent Lagerros	681	Rust	2025-02-28 14:09:18
3	Robert Janczewski	741	Rust	2020-02-05 20:06:53
4	Pankajkumar Patro	757	Rust	2024-11-19 16:02:18
5	David Rasch	792	Rust	2022-05-30 10:04:47
6	Thomas Hügel	822	Rust	2020-03-09 11:21:13
7	Artur Khuziakhmetov	873	Rust	2022-08-07 10:29:39
8	Théo Dislay	876	Rust	2021-03-19 14:40:32
9	Clément Raynaud	900	Rust	2021-03-26 02:09:11
10	Ratel Alexandre	973	Rust	2023-10-01 17:53:48

#	User	Length	Language	Date
1	Douglas Porter	1837	TypeScript	2024-08-05 15:57:50

Solution running time distribution