Problem A
Nature Reserve — Problem Statistics

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Submissions	5991
Accepted submissions	1375
Submission ratio	22.95%
Authors	1086
Full solves [?]	914
Full solve Ratio	84.16%

#	User	Runtime	Language	Date
1	Eyleifur Bjarkason	0.11 s	C	2020-10-20 19:11:17
2	Bergur Snorrason	0.14 s	C	2020-10-20 11:23:27
3	Mirel Cosulschi	0.20 s	C	2024-12-16 23:00:36
4	pengin	0.23 s	C	2021-08-31 12:31:30
5	Ivan Petrov	0.25 s	C	2019-05-21 09:43:03

#	User	Runtime	Language	Date
1	Fredrik Baldhagen	0.89 s	C#	2024-11-02 22:38:36

#	User	Runtime	Language	Date
1	Ashley Khoo	0.05 s	C++	2019-07-21 20:12:54
2	Trinh Huu Gia Phuc	0.06 s	C++	2017-10-15 15:48:47
3	Giang Truong	0.06 s	C++	2017-10-15 16:28:24
4	Đoàn Phú Đức	0.06 s	C++	2017-10-23 14:20:13
5	Donald Dong	0.06 s	C++	2018-01-03 06:43:12
6	Joel Au	0.06 s	C++	2020-05-13 16:15:13
7	Hidden user	0.06 s	C++	2025-08-20 21:34:57
8	Agis Daniels	0.07 s	C++	2020-03-30 23:55:50
9	Henry Xia	0.08 s	C++	2022-05-13 17:46:38
10	Tómas Ingi Hrólfsson	0.10 s	C++	2021-03-07 20:32:33

#	User	Runtime	Language	Date
1	Leon Tham	0.30 s	Java	2019-12-04 10:04:16
2	Jeremias Nathanial Liew Yong Hui	0.33 s	Java	2019-11-26 19:58:27
3	Crystal Sharpe	0.44 s	Java	2020-06-16 21:38:22
4	Bill Fei	0.46 s	Java	2020-04-08 19:16:47
5	Bjørn Dons	0.49 s	Java	2022-06-05 21:15:18
6	Ninghui Li	0.55 s	Java	2019-10-10 04:52:44
7	Tan Xing Zhong	0.56 s	Java	2024-11-26 08:07:27
8	Olav Røthe Bakken	0.58 s	Java	2018-03-15 16:14:04
9	Choo Jun Inn Darren	0.62 s	Java	2024-12-06 05:23:40
10	Patrick Li	0.64 s	Java	2019-10-12 22:32:14

#	User	Runtime	Language	Date
1	Benjamin Ye	0.83 s	Kotlin	2024-01-19 01:03:26
2	Phường Lên	0.90 s	Kotlin	2020-07-29 19:55:18

#	User	Runtime	Language	Date
1	Cian Ruane	0.81 s	Python 2	2018-03-28 11:58:29
2	Raymond van Venetie	0.81 s	Python 2	2019-05-20 12:13:23
3	Mihai	0.82 s	Python 2	2023-12-08 22:27:11
4	Terry Fu	0.82 s	Python 2	2024-04-01 00:57:27
5	Oskar Haarklou Veileborg	0.88 s	Python 2	2018-11-12 10:22:57
6	Harry Smidt	0.95 s	Python 2	2019-10-12 19:21:38

#	User	Runtime	Language	Date
1	Hao Yi	0.51 s	Python 3	2024-01-21 14:26:39
2	Fedor Semaev	0.53 s	Python 3	2025-02-11 08:13:44
3	Einar Bernsen	0.60 s	Python 3	2025-03-01 15:18:00
4	simon vedaa	0.62 s	Python 3	2025-02-18 13:20:41
5	Hidden user	0.65 s	Python 3	2023-10-17 05:29:40
6	Xinman Liu	0.68 s	Python 3	2021-02-20 10:14:07
7	Schnee	0.68 s	Python 3	2023-05-23 10:01:43
8	Øystein Qvigstad	0.68 s	Python 3	2025-02-10 20:42:35
9	Hidden user	0.69 s	Python 3	2025-02-14 11:36:43
10	Sander Oppen	0.69 s	Python 3	2025-04-22 16:48:57

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.02 s	Rust	2025-03-22 23:07:49
2	Brian Jensvoll-Jørgensen	0.08 s	Rust	2025-02-12 19:10:55
3	Jonathan Choi	0.23 s	Rust	2024-04-02 10:38:43
4	Hidden user	0.24 s	Rust	2025-02-11 17:18:06
5	Kristian Elde Johansen	0.31 s	Rust	2025-02-10 17:34:18
6	Iwancof	0.43 s	Rust	2023-05-23 10:21:04
7	Ole Magnus	0.46 s	Rust	2025-02-25 10:21:34

#	User	Runtime	Language	Date
1	Hidden user	0.94 s	Swift	2023-10-05 15:00:47

#	User	Length	Language	Date
1	Bergur Snorrason	1198	C	2021-02-24 10:53:21
2	Mirel Cosulschi	1756	C	2024-12-16 23:00:36
3	Ivan Petrov	1981	C	2019-05-21 09:43:03
4	pengin	2094	C	2021-08-31 12:31:30
5	Eyleifur Bjarkason	9768	C	2020-10-20 19:09:09

#	User	Length	Language	Date
1	Fredrik Baldhagen	2281	C#	2024-11-02 22:38:36

#	User	Length	Language	Date
1	William Gan	770	C++	2018-04-13 11:38:33
2	Dat Vu	815	C++	2017-10-15 15:32:05
3	shenben	845	C++	2019-08-16 07:02:18
4	Josenildo Silva	880	C++	2020-04-30 02:01:18
5	Quan Le	893	C++	2024-08-02 03:59:50
6	Teikn Smith	898	C++	2024-10-18 00:31:29
7	Taylor Huang	902	C++	2017-10-25 13:29:32
8	徐晧峻	914	C++	2017-10-25 12:33:04
9	Leonardo Blanger	917	C++	2020-12-31 17:21:01
10	Hidden user	920	C++	2018-12-06 09:46:21

#	User	Length	Language	Date
1	Crystal Sharpe	1815	Java	2020-06-16 21:38:22
2	Ian Montaño Pardo	2166	Java	2024-06-17 06:04:01
3	Darrin Wiley	2202	Java	2021-05-29 20:51:57
4	Doug Goodman	2219	Java	2018-03-05 17:46:34
5	Olav Røthe Bakken	2822	Java	2018-03-15 16:14:04
6	Gabriel Gómez Calderón	3069	Java	2024-06-18 19:03:37
7	Taras Romanyuk	3488	Java	2024-06-16 19:15:20
8	Conor Pettice-Yarnall	3745	Java	2023-12-08 01:08:29
9	Nicholas Russell Saerang	3785	Java	2021-03-26 11:06:21
10	Kevin Lim Yong Shen	3883	Java	2020-12-06 04:32:09

#	User	Length	Language	Date
1	Benjamin Ye	1025	Kotlin	2024-01-19 00:56:43
2	Phường Lên	2146	Kotlin	2020-07-29 19:55:18

#	User	Length	Language	Date
1	Oskar Haarklou Veileborg	666	Python 2	2018-11-12 10:22:57
2	Raymond van Venetie	856	Python 2	2019-05-20 12:34:03
3	Mihai	1173	Python 2	2023-12-08 22:27:11
4	Cian Ruane	1175	Python 2	2018-03-28 11:58:29
5	Terry Fu	1215	Python 2	2024-04-01 00:57:27
6	Harry Smidt	1862	Python 2	2019-10-12 19:21:38

#	User	Length	Language	Date
1	Thomas Feld	296	Python 3	2025-12-04 14:19:14
2	Benjamin Ye	318	Python 3	2024-02-01 21:45:57
3	Anshuman Dash	553	Python 3	2024-01-18 07:33:21
4	Simen Sørensen	679	Python 3	2025-02-12 14:25:12
5	John Zheng	727	Python 3	2024-03-22 17:39:23
6	Elias Gjedde-Grundtvig	752	Python 3	2024-03-01 10:50:17
7	Terry Fu	847	Python 3	2024-04-01 01:13:38
8	Snorre Thomsen	852	Python 3	2025-02-26 11:37:05
9	Ole Vik Lysne	874	Python 3	2025-02-10 16:59:34
10	Fabio Flores Rodriguez	889	Python 3	2025-12-14 02:30:39

#	User	Length	Language	Date
1	Hidden user	2073	Rust	2025-02-11 17:18:06
2	Brian Jensvoll-Jørgensen	2628	Rust	2025-02-12 19:10:55
3	Kristian Elde Johansen	2693	Rust	2025-02-10 17:34:18
4	Jonathan Choi	3402	Rust	2024-04-02 10:38:43
5	Ole Magnus	3737	Rust	2025-02-25 10:21:34
6	Vincent Lagerros	7793	Rust	2024-05-23 16:22:18
7	Iwancof	29453	Rust	2023-05-23 10:21:04

#	User	Length	Language	Date
1	Hidden user	1944	Swift	2023-10-05 15:00:47

Solution running time distribution