Problem A
Distributing Ballot Boxes — Problem Statistics

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Submissions	12240
Accepted submissions	3246
Submission ratio	26.52%
Authors	2494
Full solves [?]	2058
Full solve Ratio	82.52%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.04 s	C	2019-07-15 22:57:45
2	Sabit Zahin	0.05 s	C	2015-10-20 19:34:17
3	Troels Bjerre Lund	0.08 s	C	2019-02-22 13:42:02
4	Ivan Petrov	0.08 s	C	2019-07-29 09:48:20
5	Halil Murat Goksel	0.09 s	C	2017-11-23 01:26:48
6	Nathalie Redick	0.09 s	C	2021-01-28 23:16:21
7	Joel Bäcker	0.09 s	C	2022-01-27 15:32:35
8	André Assunção	0.09 s	C	2022-09-11 19:42:03
9	Oskar Tornevall	0.09 s	C	2022-09-11 20:48:51
10	Oussama Chaabi	0.09 s	C	2022-09-22 23:24:22

#	User	Runtime	Language	Date
1	Jürgen Bussmann	0.18 s	C#	2023-05-01 12:55:25
2	Manuela Müller	0.19 s	C#	2023-05-01 12:59:52
3	Erik van der Heide	0.19 s	C#	2024-06-14 08:48:57
4	Kamiel Cornelissen	0.21 s	C#	2023-04-20 10:56:51
5	Bart Ydens	0.21 s	C#	2023-05-01 13:18:19
6	Fredrik Absalonsen	0.24 s	C#	2018-02-25 13:47:53
7	Ronald van de Weem	0.24 s	C#	2023-05-01 12:56:58
8	Steven Heinen	0.26 s	C#	2023-05-01 13:05:40
9	Laurens Fijn van Draat	0.28 s	C#	2020-07-06 18:56:52
10	Edmar Langendoen	0.31 s	C#	2021-06-14 17:51:03

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	C++	2019-02-24 10:47:36
2	Zhang Jikun	0.04 s	C++	2022-07-13 11:55:09
3	Leo Lee	0.04 s	C++	2025-02-07 14:06:42
4	Moses Mayer	0.05 s	C++	2020-12-26 11:04:30
5	Ben Wu	0.05 s	C++	2021-08-14 03:26:19
6	Lukas Rickie	0.05 s	C++	2021-09-02 09:57:10
7	Harrison Shen	0.05 s	C++	2021-09-18 02:07:11
8	Donald Dong	0.06 s	C++	2018-01-11 02:02:30
9	Guk Yi Siong	0.06 s	C++	2022-12-09 03:35:33
10	Lim Li	0.07 s	C++	2019-03-02 18:08:45

#	User	Runtime	Language	Date
1	Dmitri Nehajev	0.24 s	Fortran	2025-03-19 12:12:51

#	User	Runtime	Language	Date
1	Kåre von Geijer	0.06 s	Go	2023-09-11 21:39:10
2	Norbert Voelker	0.27 s	Go	2023-04-17 01:31:39

#	User	Runtime	Language	Date
1	Morten Lohne	0.33 s	Haskell	2018-01-30 16:06:57
2	Birk Tjelmeland	0.51 s	Haskell	2018-01-30 20:21:24
3	Ole Magnus Lie	1.53 s	Haskell	2018-02-06 12:02:36
4	Oskar Tornevall	1.87 s	Haskell	2022-09-11 20:18:17
5	Alexander Wahlsten	2.15 s	Haskell	2022-09-11 20:35:17

#	User	Runtime	Language	Date
1	Clement Oh	0.15 s	Java	2022-07-17 22:36:44
2	Nicholas Russell Saerang	0.16 s	Java	2023-10-19 23:15:55
3	Arnav Sastry	0.17 s	Java	2018-11-21 22:01:14
4	Yunjia Tian	0.17 s	Java	2025-10-06 20:27:00
5	Hnin Wutt Yee Tun	0.20 s	Java	2019-11-01 06:06:12
6	Akeem McKenzie	0.21 s	Java	2019-04-25 21:39:51
7	Tian Xiao	0.21 s	Java	2021-03-13 07:46:30
8	Mehrzad Gandhi	0.23 s	Java	2022-02-09 23:11:09
9	Dominic Danborn	0.24 s	Java	2022-02-10 21:53:03
10	Altu Khan	0.25 s	Java	2019-12-29 13:08:44

#	User	Runtime	Language	Date
1	Daniel Lang	0.30 s	JavaScript (Node.js)	2022-06-13 22:13:21

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.30 s	JavaScript (SpiderMonkey)	2023-06-21 16:28:15

#	User	Runtime	Language	Date
1	Hidden user	0.47 s	Julia	2025-04-16 07:21:20
2	Timothy Gaede	0.70 s	Julia	2025-10-14 13:41:15

#	User	Runtime	Language	Date
1	Hidden user	0.50 s	Kotlin	2018-02-08 00:44:45
2	Danny Mittal	1.24 s	Kotlin	2022-09-30 04:52:47

#	User	Runtime	Language	Date
1	Joel Newman	0.44 s	OCaml	2023-09-21 03:48:01

#	User	Runtime	Language	Date
1	Morten Mehus	0.55 s	PHP	2018-02-19 21:25:34

#	User	Runtime	Language	Date
1	Rachel Campbell	0.29 s	Python 2	2017-05-08 02:20:33
2	Øyvind Haarberg	0.29 s	Python 2	2017-11-01 18:14:53
3	Mateusz Drwal	0.29 s	Python 2	2018-02-24 18:35:20
4	Hidden user	0.30 s	Python 2	2017-11-23 03:32:40
5	Maisam Arif	0.32 s	Python 2	2017-04-29 21:00:11
6	Lars Åström	0.32 s	Python 2	2019-10-09 19:10:09
7	Steffen Sande	0.33 s	Python 2	2018-01-30 18:51:34
8	Julio Maldonado	0.33 s	Python 2	2019-03-17 03:20:37
9	Ole Magnus Lie	0.34 s	Python 2	2018-02-06 13:06:43
10	Jesper Öqvist	0.35 s	Python 2	2019-03-12 11:16:53

#	User	Runtime	Language	Date
1	Adam Hochschild	0.25 s	Python 3	2021-09-24 20:31:31
2	Hidden user	0.28 s	Python 3	2024-10-27 18:35:42
3	Salo Lavy Perez	0.28 s	Python 3	2025-09-21 18:30:59
4	Pizza Hut	0.30 s	Python 3	2025-06-07 05:49:46
5	Aarya Bookseller	0.30 s	Python 3	2026-01-31 22:17:01
6	Kadriye Yildiz	0.31 s	Python 3	2024-08-17 15:23:08
7	Lennon Shikhman	0.31 s	Python 3	2024-10-30 16:32:58
8	Naveen Kumar S	0.31 s	Python 3	2026-02-02 15:50:03
9	Koen Timmermans	0.32 s	Python 3	2024-06-10 15:23:18
10	UTM CS AI	0.32 s	Python 3	2024-08-12 15:53:59

#	User	Runtime	Language	Date
1	Siddharth Soni	0.89 s	Ruby	2025-06-25 21:55:25

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.03 s	Rust	2026-01-17 19:51:26
2	Muhammad Rais Fathin Mudzakir	0.06 s	Rust	2021-05-15 23:21:47
3	Muhammad Sohail	0.08 s	Rust	2024-09-20 10:50:22
4	Simon Erlandsson	0.09 s	Rust	2025-03-26 01:34:27
5	Mathias Magnusson	0.11 s	Rust	2019-02-02 16:52:51
6	Sindbad Walter	0.11 s	Rust	2023-09-23 01:35:28
7	Erik Magnusson	0.12 s	Rust	2025-04-29 18:18:30
8	Petr Sabel	0.15 s	Rust	2023-09-26 14:21:08
9	Joe Blower	0.78 s	Rust	2025-09-10 03:02:41
10	David Rasch	1.04 s	Rust	2022-03-11 17:02:48

#	User	Length	Language	Date
1	Troels Bjerre Lund	516	C	2019-02-22 13:42:02
2	Mirel Cosulschi	730	C	2024-03-26 08:30:21
3	Ivan Petrov	738	C	2019-07-29 09:48:20
4	Joel Bäcker	922	C	2022-01-27 15:32:35
5	Sabit Zahin	991	C	2015-10-20 19:34:17
6	Nathalie Redick	1046	C	2021-01-28 23:16:21
7	Hidden user	1243	C	2023-09-11 22:07:47
8	Edoardo Fanton	1386	C	2025-07-10 16:37:21
9	Oskar Tornevall	1535	C	2022-09-11 20:48:51
10	Oussama Chaabi	1657	C	2022-09-22 23:24:22

#	User	Length	Language	Date
1	traxex	719	C#	2024-05-27 13:11:48
2	Jürgen Bussmann	1281	C#	2023-05-01 12:47:36
3	Manuela Müller	1377	C#	2023-05-01 12:59:52
4	Ronald van de Weem	1415	C#	2023-05-01 12:59:54
5	Kamiel Cornelissen	1448	C#	2023-04-20 10:56:51
6	Gerben Roos	1540	C#	2021-06-14 18:03:24
7	Laurens Fijn van Draat	1627	C#	2020-07-06 18:56:52
8	Hidden user	1633	C#	2024-06-10 15:27:09
9	Joop van der Heiden	1710	C#	2022-06-15 15:14:28
10	Gustav Kalander	1758	C#	2018-02-24 16:03:35

#	User	Length	Language	Date
1	Filip Bodor	398	C++	2025-08-02 15:14:14
2	William Gan	399	C++	2018-02-02 11:19:06
3	Adrien	404	C++	2024-03-29 16:53:58
4	Daria Pasqualetti	448	C++	2021-12-04 12:30:46
5	Mugeon Kim	448	C++	2024-05-29 02:39:05
6	Blaz Ignacio	449	C++	2022-09-20 01:14:25
7	Ale Mini	462	C++	2022-12-03 09:49:11
8	Michele	463	C++	2021-12-04 23:32:13
9	Edgardo Gato	469	C++	2024-03-22 22:37:58
10	Markus Mathiasen	479	C++	2022-09-13 20:40:06

#	User	Length	Language	Date
1	Dmitri Nehajev	859	Fortran	2025-03-19 12:12:51

#	User	Length	Language	Date
1	Norbert Voelker	1275	Go	2023-04-17 01:36:58
2	Kåre von Geijer	1507	Go	2023-09-11 21:39:10

#	User	Length	Language	Date
1	Birk Tjelmeland	735	Haskell	2018-01-30 20:21:24
2	Alexander Wahlsten	1003	Haskell	2022-09-11 20:35:17
3	Ole Magnus Lie	1054	Haskell	2018-02-06 12:02:36
4	Oskar Tornevall	1523	Haskell	2022-09-11 20:18:17
5	Morten Lohne	1984	Haskell	2018-01-30 16:12:26

#	User	Length	Language	Date
1	Yeung Man Tsung	608	Java	2022-07-26 18:23:45
2	Doug Goodman	726	Java	2016-10-10 20:14:41
3	Eamonn Lye	790	Java	2017-11-18 00:44:30
4	Richard Ni	790	Java	2017-11-24 05:11:35
5	Brynn Harrington	811	Java	2021-09-11 22:22:05
6	Liu Han	851	Java	2020-04-12 17:22:47
7	Maksim Segen	956	Java	2025-05-20 00:48:45
8	Kristoffer Åhgren	973	Java	2016-11-29 09:30:45
9	Kurtis Van Gent	974	Java	2016-10-07 18:58:24
10	yyy	1005	Java	2022-08-15 15:34:13

#	User	Length	Language	Date
1	Daniel Lang	1255	JavaScript (Node.js)	2022-06-13 21:58:38

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	728	JavaScript (SpiderMonkey)	2023-06-21 16:28:15

#	User	Length	Language	Date
1	Timothy Gaede	741	Julia	2025-10-14 13:41:15
2	Hidden user	762	Julia	2025-04-16 07:21:20

#	User	Length	Language	Date
1	Danny Mittal	626	Kotlin	2022-09-30 04:52:47
2	Hidden user	3220	Kotlin	2018-02-08 00:44:45

#	User	Length	Language	Date
1	Joel Newman	2555	OCaml	2023-09-21 03:48:01

#	User	Length	Language	Date
1	Morten Mehus	828	PHP	2018-02-19 21:25:34

#	User	Length	Language	Date
1	Andreas Björklund	333	Python 2	2019-10-08 16:20:20
2	Thomas Feld	370	Python 2	2019-09-25 14:52:53
3	Lars Åström	425	Python 2	2019-10-09 19:10:09
4	Sergey Pashkovsky	437	Python 2	2018-01-03 17:29:24
5	Robin Guzniczak	497	Python 2	2017-11-23 23:43:30
6	Jesper Öqvist	500	Python 2	2019-03-12 11:16:53
7	Rachel Campbell	538	Python 2	2017-05-08 02:20:33
8	William Taylor-Melanson	539	Python 2	2021-05-11 18:14:48
9	Nils Gustafsson	545	Python 2	2018-02-22 18:15:18
10	Vương Thiện Trung	583	Python 2	2019-06-04 23:04:36

#	User	Length	Language	Date
1	Benjamin Z White	192	Python 3	2023-09-01 00:50:37
2	Farzam Abrishami	220	Python 3	2024-01-21 00:53:58
3	Siddharth Soni	237	Python 3	2025-06-25 21:36:05
4	Rumbin Lee	275	Python 3	2023-05-18 17:14:03
5	Hidden user	366	Python 3	2026-02-01 02:07:54
6	Nikola Katov	378	Python 3	2025-06-24 21:08:00
7	Adil Rasiyani	385	Python 3	2023-03-01 23:01:56
8	Gustav Kalander	395	Python 3	2022-09-11 15:45:21
9	Sam Chen	397	Python 3	2025-09-25 01:53:18
10	Jason Cannon	399	Python 3	2019-05-27 20:27:03

#	User	Length	Language	Date
1	Siddharth Soni	181	Ruby	2025-06-25 21:55:25

#	User	Length	Language	Date
1	Mathias Magnusson	1023	Rust	2019-02-02 16:52:51
2	Muhammad Sohail	1029	Rust	2024-09-20 10:50:22
3	Petr Sabel	1583	Rust	2023-09-26 14:21:08
4	Mikail Khan	1616	Rust	2022-02-06 04:18:19
5	Sindbad Walter	1632	Rust	2023-09-23 01:35:28
6	Simon Erlandsson	1718	Rust	2025-03-26 01:34:27
7	David Rasch	1728	Rust	2022-03-11 17:02:48
8	Joe Blower	2727	Rust	2025-09-10 03:02:41
9	Erik Magnusson	3898	Rust	2025-04-29 18:18:30
10	Vincent Lagerros	4221	Rust	2024-05-17 14:03:54

Solution running time distribution