Problem A
Fundamental Neighbors — Problem Statistics

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Submissions	2309
Accepted submissions	876
Submission ratio	37.94%
Authors	725
Accepted authors	619
Author ratio	85.38%

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	C	2017-04-29 22:22:39
2	Hidden user	0.04 s	C	2017-05-07 10:09:51

#	User	Runtime	Language	Date
1	Robert Low	0.13 s	C#	2016-07-26 17:52:32
2	Thang Le Huu	0.17 s	C#	2019-11-28 00:52:37

#	User	Runtime	Language	Date
1	Muhammad Irham Rasyidi	0.00 s	C++	2018-03-26 21:41:27
2	Jesper Fridefors	0.01 s	C++	2017-02-21 16:29:45
3	Vahag Altunyan	0.01 s	C++	2017-04-09 21:45:41
4	Lars Hummelgren	0.01 s	C++	2017-07-22 13:32:05
5	Johan Wind	0.01 s	C++	2018-04-02 14:32:54
6	David Brink	0.01 s	C++	2018-08-15 18:45:11
7	Manal Hamdi	0.01 s	C++	2018-09-07 18:43:26
8	Agis Daniels	0.01 s	C++	2020-03-29 19:31:15
9	Lim Dewen, Aloysius	0.01 s	C++	2021-04-25 10:08:30
10	Thiago Bastos	0.01 s	C++	2021-12-02 22:58:12

#	User	Runtime	Language	Date
1	Michael Laszlo	0.12 s	Go	2016-10-07 19:35:17
2	Norbert Voelker	0.19 s	Go	2024-06-25 21:12:07
3	Vilhelm Melkstam	0.23 s	Go	2022-04-25 14:09:33
4	freeranger	0.36 s	Go	2024-04-16 18:54:38

#	User	Runtime	Language	Date
1	Jan Hlavacek	0.11 s	Haskell	2016-11-24 02:23:27
2	Aiden Petersen	0.20 s	Haskell	2021-02-14 23:44:49
3	Hidden user	0.24 s	Haskell	2023-07-09 12:09:33
4	Steinar Simonnes	0.34 s	Haskell	2025-05-28 16:35:53
5	Patrik Lilja	0.74 s	Haskell	2018-02-26 22:22:14

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.15 s	Java	2023-08-08 22:03:53
2	Herman Appelgren	0.18 s	Java	2018-07-08 22:48:29
3	Liam Keliher	0.22 s	Java	2016-04-05 22:05:34
4	José Vander Meulen	0.23 s	Java	2018-02-06 13:16:17
5	Martijn Muijsers	0.27 s	Java	2017-04-29 20:11:30
6	Ayoub Jamil	0.30 s	Java	2024-11-09 14:11:34
7	Crystal Sharpe	0.32 s	Java	2020-04-24 23:49:03
8	Nguyen Kim Tran	0.32 s	Java	2024-11-28 00:13:22
9	Saad Slimà	0.34 s	Java	2017-05-16 14:26:23
10	Bao Nguyen Phuc	0.36 s	Java	2024-11-12 18:32:08

#	User	Runtime	Language	Date
1	John Ladera	0.34 s	JavaScript (Node.js)	2019-05-30 21:52:42

#	User	Runtime	Language	Date
1	Christian Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-11-06 17:15:35
2	Bjørn Chr. Soltvedt	0.06 s	JavaScript (SpiderMonkey)	2016-12-31 12:38:33

#	User	Runtime	Language	Date
1	Timothy Gaede	0.67 s	Julia	2024-05-03 09:15:18

#	User	Runtime	Language	Date
1	Phường Lên	0.74 s	Kotlin	2020-03-03 20:55:31
2	Adam Rankin	0.74 s	Kotlin	2023-09-27 03:26:15
3	Adam Koprowski	0.79 s	Kotlin	2021-05-30 00:03:30
4	Aerika Modi	0.80 s	Kotlin	2025-05-13 11:30:12
5	Ali M. Nekoh	0.89 s	Kotlin	2025-04-28 17:57:04
6	Hidden user	0.94 s	Kotlin	2020-03-03 13:40:29

#	User	Runtime	Language	Date
1	Agis Daniels	0.13 s	Python 2	2020-03-29 19:11:37
2	Andre Pratama	0.28 s	Python 2	2017-09-27 07:32:03
3	Ram Basnet	0.29 s	Python 2	2019-12-02 04:00:32
4	Johan Lyts	0.31 s	Python 2	2020-04-03 22:04:37
5	Hermon Mulat	0.32 s	Python 2	2018-01-03 21:23:34
6	Minh Phúc Lê	0.33 s	Python 2	2018-03-26 14:43:34
7	Hidden user	0.39 s	Python 2	2018-04-02 09:36:37
8	Godmar Back	0.52 s	Python 2	2019-01-08 18:43:00
9	Christofer Ohlsson	0.62 s	Python 2	2016-02-22 08:39:42
10	Asher Trockman	0.98 s	Python 2	2016-10-18 22:30:29

#	User	Runtime	Language	Date
1	Jihao Deng	0.07 s	Python 3	2024-09-20 09:03:19
2	Vincent Tandya	0.08 s	Python 3	2019-01-15 10:13:07
3	Frederick Ivan Tan	0.08 s	Python 3	2023-02-13 04:29:57
4	Robert Nix	0.08 s	Python 3	2023-09-11 23:42:25
5	Angelo Matthew Pimienta	0.09 s	Python 3	2023-04-08 20:22:24
6	Tobias Bessler	0.13 s	Python 3	2025-04-19 23:47:51
7	Raymond Christopher	0.14 s	Python 3	2023-12-20 19:00:49
8	Kurt Wanner	0.15 s	Python 3	2021-09-09 05:33:06
9	Ali M. Nekoh	0.15 s	Python 3	2025-05-13 06:51:45
10	Agis Daniels	0.17 s	Python 3	2020-03-29 19:11:02

#	User	Runtime	Language	Date
1	Muhammad Rais Fathin Mudzakir	0.02 s	Rust	2021-06-14 21:29:26
2	Bas Dirks	0.06 s	Rust	2022-02-20 19:59:30

#	User	Length	Language	Date
1	Hidden user	1285	C	2017-05-07 11:32:33
2	Hidden user	4582	C	2017-04-29 22:22:39

#	User	Length	Language	Date
1	Thang Le Huu	1524	C#	2019-11-28 00:52:59
2	Robert Low	1731	C#	2016-07-26 17:52:32

#	User	Length	Language	Date
1	Hector Manuel Eguiarte Carlos	270	C++	2021-08-24 00:08:30
2	Herman Karlsson	306	C++	2017-01-18 12:14:23
3	Armen Andreasyan	344	C++	2017-04-26 09:17:18
4	Tanjiul Hasib	384	C++	2024-01-26 20:07:32
5	Md. Imam-Ul Sabbir	388	C++	2024-01-28 16:59:30
6	ROBIUL ALAM RATUL 2104099	400	C++	2024-01-31 15:47:25
7	Mahi Abdullah	406	C++	2024-02-02 19:43:00
8	Ayesha Labiba	408	C++	2024-01-28 18:12:25
9	Aidan Smith	417	C++	2018-01-08 03:46:54
10	Sidhant Bansal	429	C++	2018-03-27 06:37:17

#	User	Length	Language	Date
1	freeranger	800	Go	2024-04-16 18:54:38
2	Michael Laszlo	850	Go	2016-10-07 19:35:17
3	Vilhelm Melkstam	1048	Go	2022-04-25 14:09:33
4	Norbert Voelker	1586	Go	2024-06-25 19:34:15

#	User	Length	Language	Date
1	Hidden user	507	Haskell	2023-07-09 12:09:33
2	Aiden Petersen	1137	Haskell	2021-02-14 23:44:49
3	Jan Hlavacek	1236	Haskell	2016-11-24 02:23:27
4	Patrik Lilja	1289	Haskell	2018-02-26 22:22:14
5	Steinar Simonnes	28288	Haskell	2025-05-28 16:35:53

#	User	Length	Language	Date
1	Doug Goodman	437	Java	2017-12-05 17:30:49
2	Sophia Khalis	467	Java	2017-10-14 15:11:06
3	Anirudh Rahul	689	Java	2018-02-23 02:57:10
4	Mouhssine Assaoud	691	Java	2017-10-13 22:48:05
5	Tuan Nguyen Truong Anh	742	Java	2024-11-08 12:59:53
6	Josenildo Silva	753	Java	2020-04-24 21:52:28
7	Sergio Baguena	755	Java	2024-04-20 20:47:40
8	Toan Tran Ngoc Anh	767	Java	2024-11-10 22:32:58
9	Hoàng Quang Nhật	837	Java	2024-11-07 17:21:06
10	James H. Tran	864	Java	2024-11-08 08:45:41

#	User	Length	Language	Date
1	John Ladera	8233	JavaScript (Node.js)	2019-05-30 21:50:07

#	User	Length	Language	Date
1	Christian Cederquist	2172	JavaScript (SpiderMonkey)	2023-11-06 17:14:10
2	Bjørn Chr. Soltvedt	59782	JavaScript (SpiderMonkey)	2016-12-31 12:38:33

#	User	Length	Language	Date
1	Timothy Gaede	1616	Julia	2024-05-03 09:15:18

#	User	Length	Language	Date
1	Ali M. Nekoh	1069	Kotlin	2025-04-28 17:57:04
2	Aerika Modi	1365	Kotlin	2025-05-13 11:30:12
3	Phường Lên	1494	Kotlin	2020-03-03 20:55:31
4	Hidden user	1519	Kotlin	2020-03-03 13:40:29
5	Adam Rankin	1807	Kotlin	2023-09-27 03:26:15
6	Adam Koprowski	7205	Kotlin	2021-05-30 00:03:30

#	User	Length	Language	Date
1	Hidden user	286	Python 2	2018-04-02 09:36:37
2	Godmar Back	522	Python 2	2019-01-08 18:43:00
3	Agis Daniels	556	Python 2	2020-03-29 18:51:02
4	Asher Trockman	776	Python 2	2016-10-18 22:30:29
5	Johan Lyts	794	Python 2	2020-04-03 22:04:37
6	Minh Phúc Lê	863	Python 2	2018-03-26 14:43:34
7	Hermon Mulat	993	Python 2	2018-01-03 21:24:44
8	Andre Pratama	1140	Python 2	2017-09-27 07:32:03
9	Christofer Ohlsson	1271	Python 2	2016-02-22 08:39:42
10	Ram Basnet	3203	Python 2	2019-12-02 03:59:53

#	User	Length	Language	Date
1	Chris Kopp	116	Python 3	2024-04-25 07:40:45
2	Thomas Feld	123	Python 3	2023-06-22 09:28:35
3	Benjamin Z White	129	Python 3	2023-06-19 15:07:45
4	Ahmed Chamseddine	191	Python 3	2025-05-07 17:13:19
5	Farzam Abrishami	206	Python 3	2025-05-01 00:21:01
6	Hussain Abbas	272	Python 3	2025-04-29 11:05:10
7	Robert Nix	280	Python 3	2023-09-11 23:42:25
8	Angelo Matthew Pimienta	310	Python 3	2023-04-08 20:22:24
9	Evan Rose	322	Python 3	2023-04-29 07:57:18
10	Hrant Hovhannisyan	322	Python 3	2025-02-18 09:08:16

#	User	Length	Language	Date
1	Bas Dirks	840	Rust	2022-02-20 19:44:07
2	Muhammad Rais Fathin Mudzakir	7737	Rust	2021-06-14 21:27:28

Solution running time distribution