Problem A
Haunted Graveyard — Problem Statistics

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Submissions	6251
Accepted submissions	736
Submission ratio	11.77%
Authors	920
Accepted authors	478
Author ratio	51.96%

#	User	Runtime	Language	Date
1	Hidden user	0.09 s	C	2019-04-13 11:48:47
2	Anthony DiCarlo	0.09 s	C	2021-11-09 15:53:26
3	Hidden user	0.13 s	C	2024-12-25 20:27:39
4	Ivan Petrov	0.25 s	C	2019-03-14 09:25:43

#	User	Runtime	Language	Date
1	Apurav Khare	0.84 s	C#	2021-11-08 23:43:02

#	User	Runtime	Language	Date
1	Modak Shantanu Bharat	0.02 s	C++	2019-11-28 04:02:43
2	Mohammed Alrefaei	0.02 s	C++	2020-07-10 17:24:43
3	Hunter Finch	0.03 s	C++	2024-04-02 21:24:23
4	Jeremy Lim	0.03 s	C++	2024-04-03 15:44:04
5	Hidden user	0.04 s	C++	2020-07-09 22:56:26
6	Oskar Haarklou Veileborg	0.05 s	C++	2020-09-01 15:02:57
7	Yifan Sun	0.05 s	C++	2021-03-29 17:39:50
8	Flavius Abel Ciapsa	0.05 s	C++	2022-12-30 14:01:15
9	Alberto Verdejo	0.05 s	C++	2023-03-30 05:58:37
10	Sander Oppen	0.05 s	C++	2024-09-12 10:11:13

#	User	Runtime	Language	Date
1	Brent Yorgey	0.15 s	Java	2020-08-03 00:36:51
2	Rene Argento	0.23 s	Java	2024-02-07 15:59:15
3	Jason X	0.28 s	Java	2025-02-15 05:27:16
4	Anjie Liu	0.28 s	Java	2025-02-22 05:49:05
5	Jino Angelo T. Escala	0.31 s	Java	2023-05-19 07:18:52
6	Aliza Mae Maquinana	0.31 s	Java	2023-08-01 05:54:50
7	Althea Danielle Mujar	0.31 s	Java	2023-08-09 10:03:31
8	Ericka Kyle Rojas	0.31 s	Java	2023-08-12 14:40:28
9	Nicholas Russell Saerang	0.33 s	Java	2021-04-07 19:49:42
10	Supawit Chockchowwat	0.40 s	Java	2018-10-04 20:26:47

#	User	Runtime	Language	Date
1	Christian Cederquist	0.37 s	JavaScript (SpiderMonkey)	2023-10-15 21:58:49

#	User	Runtime	Language	Date
1	Hidden user	0.83 s	Python 2	2017-04-11 23:21:04
2	Dhruv Patel	0.88 s	Python 2	2022-05-05 10:13:52
3	Sehun Joo	0.89 s	Python 2	2022-05-05 10:14:53

#	User	Runtime	Language	Date
1	Blake Herrera	0.40 s	Python 3	2022-11-13 07:13:24
2	Alex KA	0.80 s	Python 3	2024-12-05 00:43:22
3	Andre double u	0.81 s	Python 3	2023-04-09 03:11:30
4	Tianqin Chu	0.83 s	Python 3	2025-05-11 23:21:15
5	Nicholas Shenk	0.86 s	Python 3	2024-12-05 02:59:04
6	Andreas Björklund	0.88 s	Python 3	2022-09-03 10:56:45
7	Lennon Shikhman	0.88 s	Python 3	2024-12-03 20:03:50
8	Ryuki Kobayashi	0.89 s	Python 3	2021-04-04 06:54:50
9	Hidden user	0.89 s	Python 3	2024-04-15 06:00:05
10	Ivan Marriott	0.90 s	Python 3	2024-12-04 19:17:12

#	User	Length	Language	Date
1	Hidden user	3058	C	2024-12-25 20:27:39
2	Ivan Petrov	3555	C	2019-03-14 09:25:43
3	Anthony DiCarlo	4631	C	2021-11-09 15:53:26
4	Hidden user	5857	C	2019-04-13 11:48:47

#	User	Length	Language	Date
1	Apurav Khare	8736	C#	2021-11-08 23:43:02

#	User	Length	Language	Date
1	Dmitry Lyubshin	1299	C++	2023-07-01 22:34:02
2	Hyunjun Lee	1437	C++	2023-06-25 16:38:14
3	Pranav Krishnan	1446	C++	2024-04-04 22:20:27
4	Hidden user	1468	C++	2024-09-26 18:04:45
5	Intae Ryoo	1506	C++	2018-10-05 06:28:59
6	Enzo	1532	C++	2024-06-20 19:22:33
7	Sid	1532	C++	2022-09-12 02:02:21
8	Sreepranad Devarakonda	1532	C++	2022-12-27 03:34:38
9	Roger Chen	1532	C++	2023-01-20 18:41:08
10	Shivabalan Balathandayuthapani	1532	C++	2023-09-22 03:38:26

#	User	Length	Language	Date
1	Frederick Pek	2699	Java	2021-03-06 12:30:18
2	Kien Pham	3101	Java	2021-09-16 23:58:04
3	Magnar Myrtveit	3114	Java	2015-05-04 19:01:31
4	Aurko Routh	3228	Java	2024-04-08 06:38:15
5	Yash Karandikar	3775	Java	2025-02-12 23:40:11
6	Camilo Perez Osorio (Alumno)	3812	Java	2024-11-22 06:03:49
7	Kiran Babu Chandrasekhar	3852	Java	2023-02-10 06:48:36
8	Hidden user	3875	Java	2025-02-11 21:07:40
9	Jason C Oh	3876	Java	2025-02-15 06:36:37
10	Ari Ayzenberg	3879	Java	2024-02-16 21:46:54

#	User	Length	Language	Date
1	Christian Cederquist	5324	JavaScript (SpiderMonkey)	2023-10-15 21:58:49

#	User	Length	Language	Date
1	Hidden user	1830	Python 2	2017-04-11 23:21:04
2	Sehun Joo	4424	Python 2	2022-05-05 10:14:53
3	Dhruv Patel	4494	Python 2	2022-05-05 10:13:52

#	User	Length	Language	Date
1	Sander Oppen	894	Python 3	2024-09-12 10:23:21
2	Andreas Björklund	1217	Python 3	2022-09-03 10:56:45
3	Mattias Davidsson	1692	Python 3	2024-07-26 13:45:54
4	Mattias Davidsson	1693	Python 3	2024-07-26 13:39:35
5	Lennon Shikhman	1694	Python 3	2024-12-03 20:03:50
6	Alex KA	1743	Python 3	2024-12-05 00:43:22
7	Nicholas Shenk	1947	Python 3	2024-12-05 02:59:04
8	Andre double u	1975	Python 3	2023-04-09 03:11:30
9	Tianqin Chu	2036	Python 3	2025-05-11 23:21:15
10	Muhammad Nauman	2100	Python 3	2021-04-04 03:32:06

Solution running time distribution