Problem M
A1 Paper — Problem Statistics

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Submissions	10277
Accepted submissions	2994
Submission ratio	29.13%
Authors	3022
Full solves [?]	2340
Full solve Ratio	77.43%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.09 s	Bash	2024-04-16 13:59:42

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	C#	2015-04-26 11:24:20
2	Bas te Kolste	0.02 s	C#	2015-06-19 14:14:54
3	Jens Mossig	0.02 s	C#	2015-08-10 13:03:21
4	Samuel Wrååk	0.02 s	C#	2016-07-01 07:30:23
5	Bryan Shiffman	0.02 s	C#	2016-10-31 17:58:59
6	Patrik Blomqvist	0.02 s	C#	2017-02-11 10:40:02
7	Robert Warnestam	0.02 s	C#	2017-02-17 21:16:40
8	Tristan Close	0.02 s	C#	2017-03-15 21:00:03
9	Firas Al Omary	0.02 s	C#	2017-03-20 12:55:26
10	Greens Parker	0.02 s	C#	2017-06-22 20:03:17

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	F#	2022-09-01 18:10:41
2	Morten Clausen	0.07 s	F#	2020-12-27 15:35:48

#	User	Runtime	Language	Date
1	Matthew Sheldon	0.00 s	Go	2023-07-30 02:18:10
2	Christoffer Danborg Irvall	0.02 s	Go	2019-05-05 18:34:16
3	Pyae Sone Min Naing	0.02 s	Go	2022-06-23 21:55:28
4	Stefan Samuelsson	0.02 s	Go	2022-10-24 08:13:44
5	Shiliang Tong	0.02 s	Go	2022-11-01 17:59:58
6	Hidden user	0.02 s	Go	2022-11-24 21:18:25
7	Andrew Gemmel	0.02 s	Go	2022-12-06 01:50:51
8	Cameron Otts	0.07 s	Go	2019-04-23 20:08:18
9	Charles Eli Gaitley	0.07 s	Go	2019-09-02 01:14:43
10	Kristoffer Åhgren	0.08 s	Go	2017-06-13 08:08:01

#	User	Runtime	Language	Date
1	Shreyas Jamadagni	0.04 s	Java	2025-03-05 08:21:59
2	Erik Odenman	0.05 s	Java	2015-04-26 10:25:43
3	Jens Ståhl	0.05 s	Java	2015-04-26 10:49:46
4	Robin Andersson	0.05 s	Java	2015-04-26 12:20:18
5	Richard Nysäter	0.05 s	Java	2015-04-26 12:24:24
6	Patrik Hörnqvist	0.05 s	Java	2015-09-05 17:47:50
7	Łukasz Antkowiak	0.05 s	Java	2015-09-15 21:48:23
8	Hidden user	0.05 s	Java	2015-09-21 08:13:35
9	Love Engman	0.05 s	Java	2015-10-03 12:45:28
10	Viktor Lindberg	0.05 s	Java	2015-10-03 14:48:10

#	User	Runtime	Language	Date
1	Will Cosley	0.04 s	JavaScript (Node.js)	2025-03-24 19:49:34
2	Kenneth Chen	0.08 s	JavaScript (Node.js)	2022-06-28 14:50:21
3	Emil Lindblom	0.08 s	JavaScript (Node.js)	2022-08-10 11:11:01
4	Oliver Larsson	0.08 s	JavaScript (Node.js)	2022-10-13 13:59:20
5	Samuel Högfeldt	0.09 s	JavaScript (Node.js)	2022-06-20 07:47:14
6	Brandon Alejandro Mosqueda González	0.09 s	JavaScript (Node.js)	2023-03-12 10:27:37

#	User	Runtime	Language	Date
1	Christian Svensson	0.01 s	JavaScript (SpiderMonkey)	2015-10-09 12:36:04
2	Hà Minh Ngọc	0.01 s	JavaScript (SpiderMonkey)	2016-07-29 01:13:03
3	Knut Salomonsson	0.01 s	JavaScript (SpiderMonkey)	2016-11-01 14:26:08
4	Tuomo Olavi	0.01 s	JavaScript (SpiderMonkey)	2018-04-05 12:32:53
5	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-08-09 18:01:01
6	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-02-15 13:49:17
7	Kārlis Gaņģis	0.03 s	JavaScript (SpiderMonkey)	2019-08-27 12:07:28

#	User	Runtime	Language	Date
1	Hidden user	0.37 s	Julia	2025-03-05 11:29:39
2	Roman Gusarev	0.61 s	Julia	2023-05-28 16:29:05
3	Timothy Gaede	0.75 s	Julia	2024-07-17 09:46:19

#	User	Runtime	Language	Date
1	Jacob Huebner	0.11 s	Kotlin	2021-10-16 21:40:08
2	Adam Rankin	0.20 s	Kotlin	2023-09-23 18:12:43
3	Troy Warmboe	0.23 s	Kotlin	2020-02-05 23:28:18

#	User	Runtime	Language	Date
1	Klimenok Artem	0.00 s	Pascal	2018-05-08 21:55:02
2	Volker Schmidt	0.00 s	Pascal	2021-03-13 15:41:39

#	User	Runtime	Language	Date
1	Philippe Hubert	0.01 s	PHP	2024-01-02 14:04:00

#	User	Runtime	Language	Date
1	Fredrika Agestam	0.02 s	Python 2	2015-04-26 11:09:31
2	Mikael Hedin	0.02 s	Python 2	2015-05-12 19:45:08
3	Erik Odenman	0.02 s	Python 2	2015-05-14 09:40:53
4	Daniel Palmqvist	0.02 s	Python 2	2015-08-31 13:02:00
5	Johan Nilsson	0.02 s	Python 2	2015-10-06 18:02:14
6	Asger Hautop Drewsen	0.02 s	Python 2	2015-10-08 09:50:04
7	Urban Pettersson	0.02 s	Python 2	2015-10-26 19:20:10
8	Lim Hong Hui Eugene	0.02 s	Python 2	2016-07-29 00:40:43
9	Frederik Højholt	0.02 s	Python 2	2016-09-10 18:19:07
10	Oliver Petri	0.02 s	Python 2	2016-09-29 21:29:04

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2015-04-26 10:02:44
2	Alex Loiko	0.02 s	Python 3	2015-04-26 11:57:49
3	Joakim Uddholm	0.02 s	Python 3	2015-04-26 12:11:24
4	Hidden user	0.02 s	Python 3	2015-04-29 17:14:39
5	Mikael Hedin	0.02 s	Python 3	2015-05-12 19:35:16
6	Fredrika Agestam	0.02 s	Python 3	2015-05-12 21:05:39
7	Alex Loiko	0.02 s	Python 3	2015-05-25 23:07:37
8	Alexandre Loiko	0.02 s	Python 3	2015-05-25 23:08:13
9	Casper Hagenaars	0.02 s	Python 3	2015-09-01 22:59:43
10	Bernt Johan Damslora	0.02 s	Python 3	2015-10-03 11:27:50

#	User	Runtime	Language	Date
1	Lee Tze Han	0.05 s	Ruby	2018-07-01 14:45:01
2	Thomas Feld	0.06 s	Ruby	2023-02-13 13:06:35

#	User	Length	Language	Date
1	Chenzhang Hu	1548	Bash	2024-04-16 13:59:42

#	User	Length	Language	Date
1	TheACEofTrump	434	C	2022-11-16 03:21:20
2	Yang Li	442	C	2018-04-12 03:57:41
3	Joonatan Matias Lennart Saarhelo	463	C	2015-10-03 12:32:55
4	Hidden user	485	C	2024-03-06 11:58:56
5	Hrant Hovhannisyan	543	C	2017-03-26 11:22:56
6	Ivan Petrov	585	C	2019-11-22 14:50:26
7	Tor Storruste	595	C	2015-10-03 13:18:57
8	Mirel Cosulschi	618	C	2023-12-31 14:56:21
9	pengin	639	C	2021-06-08 10:48:37
10	Noah Ó Donnaile	642	C	2017-03-20 17:56:20

#	User	Length	Language	Date
1	Andreas Hansson	890	C#	2019-03-11 13:53:21
2	Brian Scott	944	C#	2018-09-13 14:05:10
3	Wenlei Yu	965	C#	2025-01-21 17:47:16
4	Casper Christensen	968	C#	2019-06-01 16:08:18
5	Gustav Kalander	1280	C#	2018-09-19 20:31:21
6	Bas te Kolste	1358	C#	2015-06-19 14:14:54
7	Jens Mossig	1369	C#	2015-08-10 13:03:21
8	Hidden user	1413	C#	2018-05-28 13:46:38
9	Hugo Persson	1589	C#	2019-12-27 17:06:46
10	Cory Kalm	1633	C#	2024-09-12 03:02:33

#	User	Length	Language	Date
1	Frans Meulenbroeks	250	C++	2025-02-13 07:52:12
2	William Gan	351	C++	2017-04-16 17:37:04
3	Adrien	358	C++	2024-05-24 13:41:36
4	Jerrell Ezralemuel	368	C++	2019-09-11 18:35:06
5	Herman Karlsson	417	C++	2015-05-11 14:08:14
6	Jordan Lamkin	417	C++	2017-12-25 09:12:05
7	Jonas Ekskog	426	C++	2015-10-03 16:31:00
8	Li Yao'an	428	C++	2017-01-03 02:02:57
9	Hidden user	439	C++	2024-08-12 11:33:00
10	Jirachai Laiprasert	445	C++	2024-10-03 15:05:28

#	User	Length	Language	Date
1	Morten Clausen	637	F#	2020-12-27 15:35:48
2	Hidden user	954	F#	2022-09-01 18:10:41

#	User	Length	Language	Date
1	Hidden user	685	Go	2021-02-03 17:15:09
2	Charles Eli Gaitley	707	Go	2019-09-02 01:14:43
3	Kristoffer Åhgren	847	Go	2017-06-13 08:08:01
4	Cameron Otts	902	Go	2019-04-23 20:08:18
5	Christoffer Danborg Irvall	908	Go	2019-05-05 18:34:16
6	Matthew Sheldon	1001	Go	2023-07-30 02:18:10
7	Krzysztof Gibuła	1066	Go	2021-04-19 21:44:01
8	Hidden user	1178	Go	2022-11-24 21:18:25
9	Hidden user	1290	Go	2021-05-07 10:29:49
10	Norbert Voelker	1300	Go	2021-03-31 18:59:29

#	User	Length	Language	Date
1	Juan Miguel Vilar	161	Haskell	2023-09-01 13:27:26
2	Matthew Johnson	221	Haskell	2024-10-03 02:09:14
3	Lars Brünjes	350	Haskell	2023-01-30 11:50:21
4	Lukas Polacek	402	Haskell	2015-07-01 22:49:24
5	Antony Lee	500	Haskell	2018-10-19 22:09:08
6	Olle Eriksson	598	Haskell	2017-11-09 06:15:06
7	Lars Corbijn	612	Haskell	2015-12-18 21:48:45
8	Aaron Allen	650	Haskell	2021-06-17 02:21:25
9	Abel Martin	764	Haskell	2019-09-22 11:06:45
10	Brent Yorgey	819	Haskell	2017-11-09 04:24:58

#	User	Length	Language	Date
1	Stela Palii	478	Java	2022-03-27 18:24:11
2	Jayson Rook	518	Java	2016-09-30 03:37:56
3	Duncan Page	538	Java	2017-11-16 22:20:38
4	Pranish Pantha	541	Java	2020-08-19 16:59:07
5	Pedro Contipelli	618	Java	2018-09-13 05:26:12
6	Adam Abdalla	628	Java	2017-02-02 03:04:53
7	Doug Goodman	630	Java	2017-08-27 17:57:03
8	Robert Conde	641	Java	2018-09-17 11:58:02
9	Måns Magnusson	649	Java	2015-10-04 20:52:42
10	Nguyễn Mạnh Phúc	686	Java	2015-09-17 12:14:59

#	User	Length	Language	Date
1	Will Cosley	608	JavaScript (Node.js)	2025-03-24 19:49:34
2	Oliver Larsson	1148	JavaScript (Node.js)	2022-10-13 13:59:20
3	Kenneth Chen	1223	JavaScript (Node.js)	2022-06-28 14:50:21
4	Emil Lindblom	1420	JavaScript (Node.js)	2022-08-10 11:11:01
5	Brandon Alejandro Mosqueda González	1422	JavaScript (Node.js)	2023-03-12 10:27:37
6	Samuel Högfeldt	2324	JavaScript (Node.js)	2022-06-20 07:47:14

#	User	Length	Language	Date
1	Tuomo Olavi	469	JavaScript (SpiderMonkey)	2018-04-05 12:32:53
2	Knut Salomonsson	566	JavaScript (SpiderMonkey)	2016-11-01 14:26:08
3	Hà Minh Ngọc	611	JavaScript (SpiderMonkey)	2016-07-29 01:13:03
4	Kārlis Gaņģis	619	JavaScript (SpiderMonkey)	2019-08-27 12:07:28
5	Bjørn Chr. Soltvedt	627	JavaScript (SpiderMonkey)	2022-08-09 18:01:01
6	Christian Pilegaard Cederquist	666	JavaScript (SpiderMonkey)	2023-02-15 13:49:17
7	Christian Svensson	855	JavaScript (SpiderMonkey)	2015-10-09 12:36:04

#	User	Length	Language	Date
1	Hidden user	463	Julia	2025-03-05 11:29:39
2	Roman Gusarev	637	Julia	2023-05-28 16:29:05
3	Timothy Gaede	2291	Julia	2024-07-17 09:46:19

#	User	Length	Language	Date
1	Troy Warmboe	929	Kotlin	2020-02-05 23:28:18
2	Jacob Huebner	1372	Kotlin	2021-10-16 21:40:08
3	Adam Rankin	1827	Kotlin	2023-09-23 18:12:43

#	User	Length	Language	Date
1	Klimenok Artem	714	Pascal	2018-05-08 21:55:02
2	Volker Schmidt	996	Pascal	2021-03-13 15:41:39

#	User	Length	Language	Date
1	Philippe Hubert	994	PHP	2024-01-02 14:04:00

#	User	Length	Language	Date
1	Linda Toomey	234	Python 2	2020-12-16 11:23:45
2	Thomas Feld	255	Python 2	2019-08-26 09:04:49
3	Erik Odenman	279	Python 2	2015-05-14 09:40:53
4	Asger Hautop Drewsen	286	Python 2	2015-10-08 09:50:04
5	Justin Su	316	Python 2	2018-02-16 05:49:14
6	Maj Stenmark	337	Python 2	2019-09-17 19:23:26
7	Jesper Öqvist	339	Python 2	2018-08-26 21:43:39
8	Andreas Björklund	339	Python 2	2018-12-13 05:48:25
9	Bertrand Evertz	339	Python 2	2019-07-19 12:11:30
10	Riko Jacob	351	Python 2	2019-03-06 02:53:15

#	User	Length	Language	Date
1	Dennis Christensen	109	Python 3	2022-11-01 02:45:35
2	Nils Löfberg	113	Python 3	2024-05-30 23:23:56
3	Erik Åman	129	Python 3	2022-12-11 00:05:06
4	Noah Hessen Bjerke	140	Python 3	2024-04-16 12:04:30
5	David Llorens	143	Python 3	2023-08-10 17:48:02
6	Robert Boerwinkle	149	Python 3	2025-02-24 06:27:49
7	Tobias Bessler	153	Python 3	2025-02-24 07:10:16
8	Ahmed Chamseddine	170	Python 3	2023-11-21 08:07:27
9	Foo Yong Qi	172	Python 3	2022-08-26 10:12:13
10	Clement Oh	183	Python 3	2024-03-14 06:53:41

#	User	Length	Language	Date
1	Thomas Feld	98	Ruby	2023-02-13 13:12:51
2	Lee Tze Han	641	Ruby	2018-07-01 14:45:01

#	User	Length	Language	Date
1	Artur Khuziakhmetov	683	Rust	2023-08-21 11:15:21
2	April Clark	805	Rust	2023-10-24 15:13:06
3	Miguel Roldán Muñoz	1086	Rust	2023-08-05 19:22:06
4	Dylan Dinh	1103	Rust	2022-08-24 22:08:40
5	Samuel Kyletoft	1183	Rust	2020-10-17 11:44:34
6	Jacob Borch Madsen	1184	Rust	2023-05-03 19:52:35
7	Hidden user	1232	Rust	2023-08-05 11:41:57
8	Hidden user	1418	Rust	2019-11-24 00:50:30
9	Nick Dolan	1488	Rust	2019-04-23 19:41:05
10	Shahar Papini	1707	Rust	2025-10-19 16:14:56

Solution running time distribution