Problem M
Frosh Week — Problem Statistics

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Submissions	10016
Accepted submissions	2794
Submission ratio	27.90%
Authors	2277
Full solves [?]	1653
Full solve Ratio	72.60%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.14 s	C	2023-03-21 09:25:58
2	Þórður Agust	0.15 s	C	2019-03-26 12:22:47
3	Eyleifur Bjarkason	0.15 s	C	2019-10-26 15:09:08
4	Jay Wingfield	0.18 s	C	2025-12-07 14:39:36
5	Nicholas Teh	0.20 s	C	2018-09-02 01:58:29
6	Jing Yuan Tan	0.20 s	C	2018-10-17 15:16:21
7	Steffen Andrè Grønmo	0.20 s	C	2019-03-15 16:16:48
8	Joshua Lay	0.20 s	C	2019-08-28 15:26:18
9	Hidden user	0.20 s	C	2019-09-27 02:26:27
10	Ivy Tan	0.20 s	C	2019-09-27 02:31:42

#	User	Runtime	Language	Date
1	Lecio	1.73 s	C#	2025-09-17 05:50:41

#	User	Runtime	Language	Date
1	Neo Yu Yao Terence	0.00 s	C++	2019-03-21 09:14:24
2	Yang Chenglong	0.00 s	C++	2019-05-03 15:05:26
3	Fredrik Präntare	0.14 s	C++	2016-09-16 00:20:29
4	Oskar Lundin	0.14 s	C++	2018-11-21 14:40:26
5	Chen Shenghao	0.14 s	C++	2019-01-11 03:10:10
6	Steven Halim	0.14 s	C++	2019-02-20 02:31:46
7	Mark Wong Tau Yew	0.14 s	C++	2019-09-06 15:33:44
8	Agis Daniels	0.15 s	C++	2020-02-16 16:20:01
9	Harrison Shen	0.15 s	C++	2020-04-09 16:12:09
10	Lukas Rickie	0.15 s	C++	2021-08-21 06:22:14

#	User	Runtime	Language	Date
1	Hidden user	0.68 s	Common Lisp	2019-08-04 22:20:49

#	User	Runtime	Language	Date
1	Adam Engsig	0.23 s	Go	2023-05-11 09:05:13
2	Norbert Voelker	0.32 s	Go	2023-04-26 22:08:47
3	James Robb	0.82 s	Go	2020-04-30 21:40:57
4	James Robb	0.82 s	Go	2020-05-12 10:00:16
5	Krzysztof Gibuła	1.66 s	Go	2024-10-26 22:48:32

#	User	Runtime	Language	Date
1	Vasiliy Kevroletin	1.63 s	Haskell	2018-05-25 06:28:05
2	Juan Miguel Vilar	2.45 s	Haskell	2020-08-27 15:52:21

#	User	Runtime	Language	Date
1	Jon Chua	0.09 s	Java	2019-12-12 09:30:47
2	Chen Shenghao	0.27 s	Java	2019-08-31 14:18:16
3	Bjørn Dons	0.28 s	Java	2018-10-22 17:54:31
4	Samuel Klingström	0.30 s	Java	2018-11-16 18:03:05
5	Tye Mooneyhan	0.30 s	Java	2025-12-18 05:40:11
6	Asmus Tørsleff	0.31 s	Java	2022-02-01 14:08:59
7	Niu Xinyuan	0.33 s	Java	2018-07-11 04:40:22
8	Joachim Borup	0.33 s	Java	2023-01-31 18:50:22
9	Nicholas Dougan	0.33 s	Java	2025-12-15 23:02:53
10	Jiang Qin Hua	0.34 s	Java	2018-07-10 05:52:50

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	2.72 s	JavaScript (SpiderMonkey)	2023-06-22 21:41:22

#	User	Runtime	Language	Date
1	Timothy Gaede	1.00 s	Julia	2025-09-26 05:13:02
2	Hidden user	1.04 s	Julia	2025-03-08 06:25:34

#	User	Runtime	Language	Date
1	Phường Lên	0.64 s	Kotlin	2020-03-24 02:48:56
2	Hidden user	0.66 s	Kotlin	2020-03-21 07:05:03

#	User	Runtime	Language	Date
1	Guan Yang Ze	0.63 s	Python 2	2020-11-13 13:42:50
2	Sergey Pashkovsky	0.67 s	Python 2	2017-12-06 17:51:28
3	Hyungoo Lee	0.72 s	Python 2	2016-01-20 14:51:49
4	Yan Kalchevsky	0.76 s	Python 2	2017-02-07 10:51:46
5	Alfred Olsson	0.76 s	Python 2	2019-07-31 10:11:14
6	Hidden user	0.79 s	Python 2	2017-04-17 21:29:48
7	Martin Aumüller	0.82 s	Python 2	2019-04-12 20:41:16
8	Oskar Haarklou Veileborg	0.83 s	Python 2	2018-10-14 15:12:00
9	Akshdeep Sharma	0.87 s	Python 2	2019-10-23 18:19:46
10	Oskar Ottander	0.89 s	Python 2	2019-09-02 21:51:07

#	User	Runtime	Language	Date
1	Adithya Palaniappan Ramesh	0.53 s	Python 3	2025-09-26 02:22:22
2	Petr	0.55 s	Python 3	2025-06-18 16:59:57
3	Ole Vik Lysne	0.56 s	Python 3	2025-06-18 21:30:07
4	Ian McFarland	0.58 s	Python 3	2025-09-22 14:24:41
5	Mahmoud Amin	0.58 s	Python 3	2025-09-24 17:14:43
6	Nikolaj Munk Binder Jensen	0.60 s	Python 3	2025-01-31 10:54:11
7	Magnus Lehne	0.61 s	Python 3	2025-09-19 19:25:12
8	Zi Cheng Lew	0.61 s	Python 3	2025-10-04 08:58:01
9	David Becerra	0.62 s	Python 3	2020-05-05 14:23:17
10	Kateri Duranceau	0.62 s	Python 3	2025-09-22 13:59:18

#	User	Runtime	Language	Date
1	Andreas Severin Hauch Trøstrup	2.12 s	Ruby	2024-03-28 08:24:15
2	Hidden user	2.80 s	Ruby	2019-06-01 16:27:30

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.11 s	Rust	2024-06-02 19:24:40
2	Ole Vik Lysne	0.21 s	Rust	2024-02-29 21:19:13
3	Chaoyi Yin	0.22 s	Rust	2019-01-27 19:53:35
4	Ole Johan Walderhaug	0.23 s	Rust	2022-12-14 19:02:59
5	Chen Weikang	0.24 s	Rust	2019-01-28 03:02:33
6	Stian Soltvedt	0.24 s	Rust	2019-03-12 11:22:22
7	Albert Ross Johannessen	0.24 s	Rust	2024-02-03 14:22:08
8	Eskil Queseth	0.26 s	Rust	2020-09-10 22:47:33
9	Andreas Just Petersen	0.28 s	Rust	2023-01-31 14:59:34
10	Haggi Haggi	0.29 s	Rust	2020-02-22 21:14:31

#	User	Length	Language	Date
1	Ahmed Alae Boughdad	818	C	2016-09-07 11:49:45
2	Victor Zheng	876	C	2017-05-13 20:29:26
3	Marc Yang	906	C	2017-03-20 01:33:11
4	Nicholas Teh	906	C	2018-09-02 01:58:29
5	Jing Yuan Tan	906	C	2018-10-17 15:16:21
6	Joshua Lay	906	C	2019-08-28 15:26:18
7	Hidden user	906	C	2019-09-27 02:26:27
8	Muhammad Rais Fathin Mudzakir	934	C	2016-01-21 07:30:47
9	Howard Cheng	942	C	2021-09-24 18:37:18
10	Jaan Jaerving	976	C	2022-03-21 23:55:13

#	User	Length	Language	Date
1	Lecio	1699	C#	2025-09-17 05:50:41

#	User	Length	Language	Date
1	Christian Yongwhan Lim	411	C++	2023-06-17 12:28:47
2	Santiago Ley	426	C++	2016-09-09 22:26:25
3	Sourav Sen Tonmoy	461	C++	2018-10-04 13:07:08
4	Hidden user	483	C++	2018-07-10 11:30:40
5	Man Hin Jeffrey Hon	506	C++	2012-10-24 15:29:18
6	Nathaniel Ang	507	C++	2020-02-06 02:42:23
7	Trần Đăng Khương	519	C++	2021-08-27 15:11:54
8	arda atci	522	C++	2021-09-23 21:18:59
9	Gabriel Stanculescu	525	C++	2025-01-31 19:24:26
10	Dhairya Patel	533	C++	2020-07-17 06:21:15

#	User	Length	Language	Date
1	Hidden user	1697	Common Lisp	2019-08-04 21:43:48

#	User	Length	Language	Date
1	Krzysztof Gibuła	1093	Go	2024-10-26 22:48:32
2	Norbert Voelker	1342	Go	2023-04-26 21:59:53
3	James Robb	1531	Go	2020-04-30 21:40:57
4	James Robb	1967	Go	2020-05-12 10:00:16
5	Adam Engsig	4093	Go	2021-07-23 08:32:44

#	User	Length	Language	Date
1	Juan Miguel Vilar	841	Haskell	2020-08-27 15:52:21
2	Vasiliy Kevroletin	4306	Haskell	2018-05-25 06:28:05

#	User	Length	Language	Date
1	Bergur Snorrason	954	Java	2024-04-03 09:23:22
2	Doug Goodman	968	Java	2017-12-04 19:07:20
3	Mouhssine Assaoud	1021	Java	2017-10-22 13:50:02
4	Hidden user	1095	Java	2019-12-30 01:53:59
5	Andre	1160	Java	2022-07-16 19:22:51
6	Duncan Page	1202	Java	2018-12-03 23:29:36
7	Árni Björn Óskarsson	1212	Java	2023-03-25 18:16:43
8	Otto Alexander Sutianto	1218	Java	2019-08-28 11:10:36
9	Quan Chau	1221	Java	2017-07-21 13:07:13
10	Kaung Htet Wai Yan	1239	Java	2023-06-25 07:16:21

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	537	JavaScript (SpiderMonkey)	2023-06-22 21:41:22

#	User	Length	Language	Date
1	Hidden user	286	Julia	2025-03-08 06:25:34
2	Timothy Gaede	1289	Julia	2025-09-26 05:13:02

#	User	Length	Language	Date
1	Phường Lên	1321	Kotlin	2020-03-24 02:48:56
2	Hidden user	1415	Kotlin	2020-03-21 07:05:03

#	User	Length	Language	Date
1	Andreas Björklund	568	Python 2	2020-03-08 14:54:47
2	Oskar Haarklou Veileborg	574	Python 2	2018-10-14 15:12:00
3	Alfred Olsson	643	Python 2	2019-07-31 10:11:14
4	Torstein Strømme	742	Python 2	2019-02-12 14:02:56
5	Frederik Højholt	764	Python 2	2016-09-13 14:00:22
6	Sergey Pashkovsky	780	Python 2	2017-12-06 17:55:37
7	Hidden user	781	Python 2	2017-04-17 21:29:48
8	Akshdeep Sharma	838	Python 2	2019-10-23 18:19:46
9	Oskar Ottander	932	Python 2	2019-09-02 21:51:07
10	Martin Aumüller	1073	Python 2	2019-04-12 20:41:16

#	User	Length	Language	Date
1	Michael Goldwasser	265	Python 3	2024-09-12 23:31:30
2	Viktor Már Guðmundsson	311	Python 3	2023-03-21 11:01:39
3	Kevin Yu	362	Python 3	2023-09-17 03:20:04
4	Björn Thor Stefánsson	363	Python 3	2024-04-03 15:18:37
5	Kristján Sölvi Örnólfsson	366	Python 3	2023-03-22 10:29:30
6	Albert Ross Johannessen	402	Python 3	2024-02-02 22:50:57
7	Kristján Dagur Egilsson	447	Python 3	2024-04-03 15:10:24
8	Wei-Sen Wang	456	Python 3	2025-09-25 22:23:41
9	Nikola Katov	460	Python 3	2025-06-24 19:39:38
10	Martin Aumüller	529	Python 3	2023-01-30 19:26:45

#	User	Length	Language	Date
1	Hidden user	420	Ruby	2019-06-01 16:27:30
2	Andreas Severin Hauch Trøstrup	625	Ruby	2024-03-28 08:24:15

#	User	Length	Language	Date
1	Malte Kildelund Rosenkilde	1057	Rust	2025-02-04 09:02:27
2	Ole Vik Lysne	1083	Rust	2024-03-04 12:12:10
3	Albert Ross Johannessen	1151	Rust	2024-02-03 14:22:08
4	Artur Khuziakhmetov	1240	Rust	2022-08-11 10:06:11
5	Eskil Queseth	1384	Rust	2020-09-10 22:47:33
6	HuaiYuan Jing	1671	Rust	2025-09-21 23:33:19
7	Lukas Dutrieux	1682	Rust	2025-09-17 18:44:41
8	Ole Johan Walderhaug	1718	Rust	2022-12-14 19:02:59
9	Chaoyi Yin	1925	Rust	2019-01-27 19:53:35
10	Andreas Just Petersen	2288	Rust	2023-01-31 14:59:34

Solution running time distribution