Problem A
Horror Film Night — Problem Statistics

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Submissions	2860
Accepted submissions	1065
Submission ratio	37.24%
Authors	729
Full solves [?]	634
Full solve Ratio	86.97%

#	User	Runtime	Language	Date
1	Martin Wass	0.03 s	C	2017-11-18 21:05:30
2	Garðar Ingvarsson	0.03 s	C	2019-05-09 03:53:55
3	Hidden user	0.15 s	C	2019-04-12 09:54:24
4	Ivan Petrov	0.15 s	C	2019-07-10 08:42:41
5	Sambit Palit	0.18 s	C	2020-11-25 23:48:46
6	Nick Hargrove	0.18 s	C	2021-12-15 01:06:13
7	Raymond Yang	0.20 s	C	2021-06-30 03:16:23

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.17 s	C#	2019-07-14 11:58:30
2	Akib Ibn Zahid	0.25 s	C#	2025-11-07 11:49:22
3	Jens Erik	0.97 s	C#	2025-11-19 01:58:34
4	Simon Thillemann Nielsen	0.97 s	C#	2025-11-19 01:59:13
5	Sam Crerar	1.19 s	C#	2022-03-26 16:14:59
6	David Parker	1.20 s	C#	2022-03-16 22:38:26
7	Mark Lekkerkerker	1.24 s	C#	2018-05-01 13:11:07
8	Louie Waterfall	1.38 s	C#	2022-03-26 17:42:42
9	Dick Appel	1.61 s	C#	2018-05-02 22:14:38

#	User	Runtime	Language	Date
1	Mara	0.02 s	C++	2019-09-14 22:57:35
2	Brandon Zhang	0.02 s	C++	2024-09-02 08:02:38
3	Martin Wass	0.03 s	C++	2017-11-18 19:11:07
4	Harrison Shen	0.03 s	C++	2020-02-14 06:56:06
5	Frank Endriss	0.03 s	C++	2021-02-05 22:14:27
6	Hieronymus de Jong	0.04 s	C++	2018-05-11 14:30:07
7	Bernhard Hahn	0.04 s	C++	2018-05-20 19:01:27
8	Donald Dong	0.04 s	C++	2018-05-30 04:51:44
9	Nick Overdijk	0.04 s	C++	2019-09-14 22:28:06
10	Hidden user	0.05 s	C++	2024-12-10 06:01:36

#	User	Runtime	Language	Date
1	Hidden user	0.19 s	Common Lisp	2019-07-27 08:04:44

#	User	Runtime	Language	Date
1	Norbert Voelker	0.28 s	Go	2021-12-01 22:30:17
2	Steven Cheng	1.71 s	Go	2020-06-02 22:59:54

#	User	Runtime	Language	Date
1	Shreyas Jamadagni	0.12 s	Java	2025-03-11 09:43:37
2	Dat Vo Nguyen Tien	0.13 s	Java	2022-01-25 09:51:29
3	Leon Wang	0.13 s	Java	2024-10-11 21:29:39
4	Leo Pan	0.14 s	Java	2022-10-20 22:58:52
5	Miras Abdishev	0.15 s	Java	2022-10-21 03:12:46
6	Samuel Klingström	0.16 s	Java	2020-08-12 20:25:05
7	Jack Fang	0.16 s	Java	2024-10-17 02:16:39
8	Martin Wass	0.28 s	Java	2017-11-18 20:17:00
9	Elias Moons	0.48 s	Java	2018-03-22 08:57:20
10	Jarik Karsten	0.48 s	Java	2018-09-27 19:49:23

#	User	Runtime	Language	Date
1	Minh Trang Nguyen	0.56 s	JavaScript (Node.js)	2025-10-31 17:24:57

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.34 s	JavaScript (SpiderMonkey)	2023-07-25 16:12:12
2	Bjørn Chr. Soltvedt	0.40 s	JavaScript (SpiderMonkey)	2018-07-07 15:58:48

#	User	Runtime	Language	Date
1	Hidden user	1.06 s	Kotlin	2020-05-10 07:51:29
2	Chelsea Hoernemann	1.09 s	Kotlin	2022-11-11 21:20:18
3	Adam Rankin	1.44 s	Kotlin	2023-09-15 23:16:15

#	User	Runtime	Language	Date
1	Maj Stenmark	0.30 s	Python 2	2018-06-25 13:28:11
2	Johan Lyts	0.30 s	Python 2	2021-01-16 14:59:11
3	Nishka Awasthi	0.30 s	Python 2	2022-10-21 06:10:57
4	Gertjan Kloosterman	0.36 s	Python 2	2018-04-30 15:18:00
5	Got Yaoi	0.40 s	Python 2	2018-04-16 06:09:08
6	Andreas Björklund	0.40 s	Python 2	2019-10-22 08:16:37
7	Chris Winkler	0.41 s	Python 2	2018-04-27 22:46:01
8	Sigurður Jens Albertsson	0.42 s	Python 2	2017-11-07 18:06:06
9	Asger Hautop Drewsen	0.57 s	Python 2	2018-10-04 17:25:03
10	Oskar Haarklou Veileborg	0.58 s	Python 2	2018-10-29 22:14:10

#	User	Runtime	Language	Date
1	BOHAO ZHANG	0.31 s	Python 3	2020-11-15 08:26:31
2	Hank Jacoby	0.31 s	Python 3	2026-02-03 20:19:20
3	Aditya Behrani	0.32 s	Python 3	2022-10-21 00:02:56
4	Varun Asuri	0.33 s	Python 3	2022-10-21 00:39:01
5	WARRICK HE	0.33 s	Python 3	2022-10-21 03:38:33
6	Pedro Sugiyama	0.35 s	Python 3	2022-10-21 03:14:55
7	Justin Malcolm Ayuste	0.35 s	Python 3	2025-10-22 18:28:24
8	Hidden user	0.37 s	Python 3	2022-08-07 21:31:06
9	sebastián Magaña	0.37 s	Python 3	2025-05-15 21:49:14
10	Munir Kudrati-Plummer	0.37 s	Python 3	2026-02-02 01:07:21

#	User	Runtime	Language	Date
1	Thomas Feld	0.72 s	Ruby	2026-01-29 13:40:01

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.02 s	Rust	2025-03-10 14:58:35
2	Joep Jansen	0.03 s	Rust	2021-02-21 15:42:44
3	HuaiYuan Jing	0.07 s	Rust	2025-10-06 18:44:38

#	User	Length	Language	Date
1	Ivan Petrov	657	C	2019-07-10 08:42:41
2	Sambit Palit	705	C	2020-11-25 23:48:46
3	Martin Wass	952	C	2017-11-18 21:05:30
4	Nick Hargrove	1059	C	2021-12-15 01:06:13
5	Hidden user	1067	C	2019-04-12 09:54:24
6	Garðar Ingvarsson	1134	C	2019-05-09 03:51:31
7	Raymond Yang	1438	C	2021-06-30 03:16:23

#	User	Length	Language	Date
1	Mark Lekkerkerker	1954	C#	2018-05-01 13:33:54
2	Dick Appel	1958	C#	2018-05-02 22:14:38
3	Louie Waterfall	2390	C#	2022-03-26 17:42:42
4	Akib Ibn Zahid	2620	C#	2025-11-07 11:49:22
5	Jens Erik	4025	C#	2025-11-19 01:58:34
6	Simon Thillemann Nielsen	4025	C#	2025-11-19 01:59:13
7	Sam Crerar	4398	C#	2022-03-26 16:14:59
8	David Parker	5812	C#	2022-03-16 22:38:26
9	Andriy Zyevakov	8801	C#	2019-07-14 11:58:30

#	User	Length	Language	Date
1	Anvit Sinha	195	C++	2022-10-28 04:20:56
2	Clement Oh	386	C++	2023-10-18 02:40:57
3	Hyunjun Lee	409	C++	2023-05-10 03:32:31
4	Eric Zhang	432	C++	2024-10-17 20:18:27
5	Xiaoyang Xu	443	C++	2025-10-20 00:39:25
6	Maciej Sidor	469	C++	2023-05-16 13:02:09
7	Emmanuel Anaya	474	C++	2020-10-22 07:37:22
8	陳子濬	480	C++	2019-09-21 07:05:37
9	Ethan Tran	497	C++	2025-04-14 10:04:54
10	Ankur Garg	498	C++	2020-11-13 01:30:17

#	User	Length	Language	Date
1	Hidden user	1508	Common Lisp	2019-07-27 05:43:28

#	User	Length	Language	Date
1	Norbert Voelker	1313	Go	2021-12-01 22:30:17
2	Steven Cheng	1377	Go	2020-06-02 22:59:54

#	User	Length	Language	Date
1	Quang Long Huynh	762	Java	2021-08-31 02:41:10
2	Aaron Teetor	806	Java	2019-04-03 02:19:25
3	Conor Perreault	832	Java	2020-10-13 16:23:37
4	Conor Perreault	832	Java	2021-08-17 21:23:35
5	Jiru Xu	842	Java	2017-10-30 21:21:41
6	Eric Leow Yu Quan	847	Java	2021-04-28 09:51:06
7	Kevin Sun	953	Java	2021-06-30 23:53:25
8	Doug Goodman	994	Java	2017-12-21 21:03:15
9	Martin Wass	1019	Java	2017-11-18 20:17:00
10	Lakouam Issam	1040	Java	2018-09-30 02:04:49

#	User	Length	Language	Date
1	Minh Trang Nguyen	1320	JavaScript (Node.js)	2025-10-31 17:24:57

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	594	JavaScript (SpiderMonkey)	2018-07-07 15:58:48
2	Christian Pilegaard Cederquist	831	JavaScript (SpiderMonkey)	2023-07-25 16:12:12

#	User	Length	Language	Date
1	Hidden user	1419	Kotlin	2020-05-10 07:51:29
2	Chelsea Hoernemann	2094	Kotlin	2022-11-11 21:20:18
3	Adam Rankin	2489	Kotlin	2023-09-15 23:16:15

#	User	Length	Language	Date
1	Måns Magnusson	377	Python 2	2017-10-31 13:17:54
2	Andreas Björklund	394	Python 2	2019-10-22 08:16:37
3	Maj Stenmark	454	Python 2	2018-06-25 13:28:11
4	Johan Lyts	484	Python 2	2021-01-16 15:03:27
5	Asger Hautop Drewsen	708	Python 2	2018-10-04 17:25:03
6	Oskar Haarklou Veileborg	708	Python 2	2018-10-29 22:14:10
7	Sigurður Jens Albertsson	730	Python 2	2017-11-07 18:06:06
8	Nishka Awasthi	811	Python 2	2022-10-21 06:10:57
9	Got Yaoi	1037	Python 2	2018-04-16 06:52:05
10	Lars Åström	1051	Python 2	2018-06-28 23:01:28

#	User	Length	Language	Date
1	Peter Jin	123	Python 3	2022-10-28 05:08:56
2	Michael Goldwasser	148	Python 3	2025-10-10 17:18:01
3	Harry Zhang	153	Python 3	2023-12-10 08:36:36
4	Varun Asuri	210	Python 3	2022-10-28 02:18:10
5	Josenildo Silva	233	Python 3	2018-04-17 03:17:06
6	Ahmed Chamseddine	238	Python 3	2025-09-01 16:38:24
7	Hidden user	273	Python 3	2021-05-06 15:24:03
8	Munir Kudrati-Plummer	285	Python 3	2026-02-02 01:22:19
9	Ciara Godwin	317	Python 3	2017-12-02 14:01:06
10	Doris Brown	342	Python 3	2018-12-07 23:43:09

#	User	Length	Language	Date
1	Thomas Feld	91	Ruby	2026-01-29 13:56:04

#	User	Length	Language	Date
1	Joep Jansen	1009	Rust	2021-02-21 16:05:12
2	HuaiYuan Jing	1360	Rust	2025-10-06 18:44:38
3	Vincent Lagerros	19284	Rust	2024-08-09 19:47:24

Solution running time distribution