Problem I
VisuAlgo Online Quiz — Problem Statistics

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Submissions	2500
Accepted submissions	845
Submission ratio	33.80%
Authors	748
Accepted authors	655
Author ratio	87.57%

#	User	Runtime	Language	Date
1	Ioannis Br	0.01 s	C	2020-04-29 19:21:51
2	Tjandra Satria Gunawan	0.02 s	C	2015-09-12 09:52:53

#	User	Runtime	Language	Date
1	Nazrul Affiq Bin Ahmad Amimar	0.25 s	C#	2015-09-12 11:56:21
2	Daouda Camara	0.25 s	C#	2015-09-14 12:42:25

#	User	Runtime	Language	Date
1	Nguyen Viet Hoa	0.00 s	C++	2015-09-12 08:14:38
2	traxex	0.00 s	C++	2018-05-02 06:17:18
3	Donald Dong	0.01 s	C++	2018-06-17 22:10:19
4	Hans Tananda	0.01 s	C++	2018-08-25 14:20:33
5	Bergur Snorrason	0.01 s	C++	2020-01-19 17:26:52
6	Harrison Shen	0.01 s	C++	2020-09-05 02:15:28
7	Ben Wu	0.01 s	C++	2021-11-17 17:44:15
8	Hoàng Đại Phạm	0.02 s	C++	2015-09-12 07:18:06
9	Felix Halim	0.02 s	C++	2015-09-12 07:26:48
10	Minh Duc Bach	0.02 s	C++	2015-09-12 07:27:01

#	User	Runtime	Language	Date
1	Norbert Voelker	0.09 s	Go	2021-12-18 20:58:12
2	Noah Alexander Brubaker	0.25 s	Go	2021-08-20 08:56:52
3	Julian Duniec	1.14 s	Go	2023-09-09 09:38:48

#	User	Runtime	Language	Date
1	Đỗ Duy Tân	0.09 s	Java	2016-08-03 16:02:17
2	Nam Phan Thành	0.09 s	Java	2018-09-12 16:55:23
3	Hà Minh Ngọc	0.10 s	Java	2016-08-02 10:44:13
4	Crystal Sharpe	0.11 s	Java	2020-05-28 21:35:06
5	Khánh Nguyễn Tiến	0.12 s	Java	2018-09-11 20:46:19
6	Bjørn Dons	0.13 s	Java	2019-05-17 22:01:32
7	Tú Huỳnh	0.15 s	Java	2016-08-03 05:05:00
8	Duncan Page	0.15 s	Java	2019-09-17 00:36:05
9	Van Nguyen	0.16 s	Java	2016-02-09 17:22:26
10	Đức Phạm Hoài	0.17 s	Java	2018-09-13 14:05:48

#	User	Runtime	Language	Date
1	Christian Cederquist	0.19 s	JavaScript (SpiderMonkey)	2023-10-31 23:38:25

#	User	Runtime	Language	Date
1	Nguyen Quang Dung	0.07 s	PHP	2016-02-27 13:44:59

#	User	Runtime	Language	Date
1	Godmar Back	0.12 s	Python 2	2016-09-22 04:43:05
2	Christian Rachmaninoff	0.12 s	Python 2	2017-09-13 02:48:46
3	Oskar Haarklou Veileborg	0.12 s	Python 2	2018-10-30 22:58:57
4	Lars Åström	0.13 s	Python 2	2019-10-30 17:45:59
5	Anton Lyxell	0.13 s	Python 2	2020-01-28 18:44:47
6	Andreas Björklund	0.13 s	Python 2	2020-11-02 20:13:33

#	User	Runtime	Language	Date
1	Jiaming Kong	0.10 s	Python 3	2025-08-07 08:22:33
2	Gladwin Yeo	0.11 s	Python 3	2022-06-09 06:18:53
3	Ryan Tan	0.12 s	Python 3	2022-04-25 08:12:39
4	Victor Song	0.12 s	Python 3	2024-01-28 07:14:07
5	Jose Manuel	0.12 s	Python 3	2025-03-17 17:52:12
6	Hidden user	0.12 s	Python 3	2025-07-27 07:03:56
7	Ahmed Waseem Saeed	0.13 s	Python 3	2021-11-27 14:35:41
8	Iván	0.13 s	Python 3	2025-03-12 09:29:53
9	Nicholas Russell Saerang	0.15 s	Python 3	2023-03-28 01:58:27
10	Tai Tze Kin	0.15 s	Python 3	2024-01-06 22:24:32

#	User	Runtime	Language	Date
1	Yoeri Otten	0.01 s	Rust	2022-11-02 15:28:29
2	Bas Dirks	0.02 s	Rust	2024-02-22 13:51:24

#	User	Length	Language	Date
1	Tjandra Satria Gunawan	2925	C	2015-09-12 09:52:53
2	Ioannis Br	5192	C	2020-04-29 19:21:51

#	User	Length	Language	Date
1	Daouda Camara	4197	C#	2015-09-14 12:42:25
2	Nazrul Affiq Bin Ahmad Amimar	4353	C#	2015-09-12 11:56:21

#	User	Length	Language	Date
1	Hidden user	741	C++	2024-09-24 13:29:24
2	Yeung Man Tsung	827	C++	2023-01-04 10:58:23
3	Ninad Sachania	887	C++	2024-08-06 19:21:02
4	Jerome Leow	893	C++	2020-12-17 08:21:56
5	Luke Videckis	895	C++	2021-11-24 16:13:11
6	Loi Phuc Nguyen	903	C++	2023-07-23 16:31:28
7	Mohamed Elalem	906	C++	2025-06-15 22:39:02
8	Josenildo Silva	908	C++	2020-05-02 03:57:48
9	Sidhant Bansal	916	C++	2018-05-10 23:41:43
10	Ernest Ng Zi Xuan	919	C++	2023-06-26 13:48:35

#	User	Length	Language	Date
1	Julian Duniec	1879	Go	2023-09-09 09:38:48
2	Noah Alexander Brubaker	3605	Go	2021-08-20 08:56:52
3	Norbert Voelker	5881	Go	2021-12-18 20:58:12

#	User	Length	Language	Date
1	Doug Goodman	1425	Java	2018-06-11 18:20:28
2	Martin Wan	1577	Java	2017-09-18 07:57:23
3	Jiru Xu	1709	Java	2017-04-24 05:32:06
4	Duncan Page	1715	Java	2019-09-17 00:36:05
5	Marco Vincenzo Karaan	1796	Java	2016-02-27 07:46:42
6	John Kevin Tjahjadi	1836	Java	2016-03-02 07:16:39
7	Harrison Fang	1857	Java	2016-09-22 01:46:45
8	Frederick Pek	1956	Java	2021-03-03 08:45:50
9	raul fauste	2039	Java	2025-03-19 09:21:42
10	Darrin Wiley	2051	Java	2015-10-13 11:19:30

#	User	Length	Language	Date
1	Christian Cederquist	1973	JavaScript (SpiderMonkey)	2023-10-31 23:38:25

#	User	Length	Language	Date
1	Nguyen Quang Dung	3191	PHP	2016-02-27 13:44:59

#	User	Length	Language	Date
1	Andreas Björklund	681	Python 2	2020-11-02 20:13:33
2	Godmar Back	716	Python 2	2016-09-22 04:43:05
3	Oskar Haarklou Veileborg	729	Python 2	2018-10-30 22:58:57
4	Anton Lyxell	1060	Python 2	2020-01-28 18:44:47
5	Christian Rachmaninoff	1131	Python 2	2017-09-13 02:48:46
6	Lars Åström	1131	Python 2	2019-10-30 17:45:59

#	User	Length	Language	Date
1	Clement Oh	599	Python 3	2024-01-20 10:01:27
2	Gareth Ma	711	Python 3	2021-10-04 00:35:18
3	Tai Tze Kin	717	Python 3	2024-01-06 22:24:32
4	Hidden user	729	Python 3	2023-03-07 20:53:43
5	Donald Lee	773	Python 3	2021-12-05 18:40:36
6	Victor Song	776	Python 3	2024-01-28 07:14:07
7	Iman Khodadi	837	Python 3	2024-06-11 08:29:08
8	Nicholas Russell Saerang	858	Python 3	2023-03-28 01:58:27
9	Ryan Tan	862	Python 3	2022-04-25 08:12:39
10	Erling Holte	955	Python 3	2022-10-13 21:00:58

#	User	Length	Language	Date
1	Bas Dirks	1890	Rust	2024-02-22 13:54:10
2	Yoeri Otten	3725	Rust	2022-11-02 15:28:29

Solution running time distribution