Problem A
Smart Phone — Problem Statistics

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Submissions	1985
Accepted submissions	778
Submission ratio	39.19%
Authors	775
Full solves [?]	684
Full solve Ratio	88.26%

#	User	Runtime	Language	Date
1	Mads Storm Hansen	0.02 s	C#	2015-07-25 20:58:37
2	Love Engman	0.02 s	C#	2016-03-31 11:16:35
3	Andrzej Krajniak	0.02 s	C#	2016-09-14 18:22:03
4	Marek	0.02 s	C#	2016-09-14 18:25:01
5	Daniel Materowski	0.02 s	C#	2016-09-20 21:15:41
6	Piotr Karpala	0.02 s	C#	2016-09-26 06:14:26
7	Đỗ Duy Tân	0.02 s	C#	2016-10-12 06:06:55
8	Viktor Máni Mönster	0.02 s	C#	2018-07-27 04:45:31
9	Nils Lenart	0.02 s	C#	2020-03-22 15:42:32
10	Mikael Fiala-Lundström	0.02 s	C#	2022-02-08 02:33:57

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2023-02-12 12:50:34

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2021-07-30 11:44:14

#	User	Runtime	Language	Date
1	David Wärn	0.00 s	Haskell	2015-05-18 16:38:06
2	Patrik Lilja	0.00 s	Haskell	2016-01-02 16:40:31
3	Brent Yorgey	0.00 s	Haskell	2018-01-02 00:03:12
4	Mattias Aronsson Adler	0.00 s	Haskell	2018-07-24 20:11:42
5	Jason Hooper	0.00 s	Haskell	2019-10-03 07:50:49
6	Hidden user	0.00 s	Haskell	2019-11-20 17:44:08
7	Hidden user	0.00 s	Haskell	2023-01-14 16:51:50
8	Md Akif Chowdhury	0.00 s	Haskell	2023-07-11 19:04:50
9	Steinar Simonnes	0.00 s	Haskell	2024-05-07 11:49:06

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-10-15 23:36:25
2	Marte Dybevik Løge	0.05 s	Java	2015-04-25 11:53:24
3	Johan Jensen	0.05 s	Java	2015-04-25 11:55:30
4	Åsmund Vikane	0.05 s	Java	2015-04-25 13:28:01
5	Magnar Myrtveit	0.05 s	Java	2015-04-29 20:00:34
6	Viktor Lindberg	0.05 s	Java	2015-10-09 03:15:43
7	Williard Jose	0.05 s	Java	2015-11-14 07:53:34
8	Michael Sullivan	0.05 s	Java	2016-02-15 01:13:51
9	Simon Xue	0.05 s	Java	2016-04-05 12:01:49
10	Micah Stairs	0.05 s	Java	2016-09-03 04:28:44

#	User	Runtime	Language	Date
1	Markus Nilssen	0.01 s	JavaScript (SpiderMonkey)	2015-09-20 18:36:35
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-04-14 22:42:47
3	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-04-22 01:41:02
4	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-04-05 06:48:12
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-15 02:23:24

#	User	Runtime	Language	Date
1	Timothy Gaede	0.63 s	Julia	2024-05-15 06:50:04

#	User	Runtime	Language	Date
1	Adam Rankin	0.17 s	Kotlin	2023-09-08 20:03:27

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2016-11-12 18:38:16

#	User	Runtime	Language	Date
1	Halvor Lund	0.03 s	Python 2	2015-04-25 11:21:22
2	Jean Niklas L'orange	0.03 s	Python 2	2015-04-25 11:22:18
3	Stian Jensen	0.03 s	Python 2	2015-04-25 11:30:24
4	Martin Vonheim Larsen	0.03 s	Python 2	2015-04-25 11:35:28
5	Ida Bredal Skjørten	0.03 s	Python 2	2015-04-25 11:43:16
6	Arne Tobias Malkenes Ødegaard	0.03 s	Python 2	2015-04-25 11:49:53
7	Didrik Pemmer Aalen	0.03 s	Python 2	2015-04-25 11:54:24
8	Balder Søholt Halmrast	0.03 s	Python 2	2015-04-25 11:58:00
9	Edgar Vedvik	0.03 s	Python 2	2015-04-25 12:03:58
10	Vegard Stikbakke	0.03 s	Python 2	2015-04-25 12:21:43

#	User	Runtime	Language	Date
1	Nils Gustafsson	0.02 s	Python 3	2015-04-25 13:40:09
2	Brandon Morris	0.02 s	Python 3	2016-05-02 00:31:28
3	Ryan Tate	0.02 s	Python 3	2016-10-14 23:57:52
4	Louis Abraham	0.02 s	Python 3	2017-04-01 15:12:05
5	Martin Jackson	0.02 s	Python 3	2017-04-14 23:41:47
6	Martin Simensen	0.02 s	Python 3	2017-05-04 15:10:59
7	Ciara Godwin	0.02 s	Python 3	2017-05-31 01:20:16
8	Cian Ruane	0.02 s	Python 3	2017-08-06 01:03:34
9	Jason ShuJi Chen	0.02 s	Python 3	2017-12-09 03:44:25
10	Денис Соболев	0.02 s	Python 3	2017-12-18 14:09:28

#	User	Runtime	Language	Date
1	Jonathan Gin	0.04 s	Ruby	2019-09-28 02:51:57
2	Paarth Madan	0.04 s	Ruby	2019-09-28 03:06:42
3	Thomas Feld	0.06 s	Ruby	2023-05-12 11:31:19

#	User	Runtime	Language	Date
1	Arnav Sastry	0.00 s	Rust	2021-08-16 23:53:17
2	Bas Dirks	0.00 s	Rust	2022-06-17 16:14:49
3	Isak Jägberg	0.00 s	Rust	2023-04-03 10:52:20
4	Vincent Lagerros	0.00 s	Rust	2025-08-09 16:19:36

#	User	Length	Language	Date
1	Noah Ó Donnaile	612	C	2017-02-20 01:50:36
2	Hidden user	716	C	2025-05-23 14:14:53
3	Sambit Palit	991	C	2020-10-10 00:38:53
4	daimiao chen	1063	C	2024-03-14 07:38:10
5	Hinh Dinh Quang	1340	C	2015-09-03 17:23:45
6	Huynh Thanh Thao	1340	C	2015-09-04 00:46:59
7	William Mccann	1399	C	2019-04-26 23:49:01
8	Jón Steinn Elíasson	1405	C	2017-07-17 20:27:57
9	Dodi Vebri Wicahyo	1405	C	2018-05-05 19:07:05
10	14 Hariharan Thiagarajan K	1405	C	2022-05-16 15:21:25

#	User	Length	Language	Date
1	Marek	1459	C#	2016-09-14 18:25:01
2	Mikael Fiala-Lundström	1790	C#	2022-02-08 02:33:57
3	Love Engman	1911	C#	2016-03-31 11:16:35
4	Mads Storm Hansen	2206	C#	2015-07-25 20:58:37
5	David Parker	2279	C#	2023-04-30 13:10:54
6	Daniel Materowski	2303	C#	2016-09-20 21:15:41
7	Peter Moorhouse	2333	C#	2023-04-30 15:40:20
8	Viktor Máni Mönster	2703	C#	2018-07-27 04:45:31
9	Nikolai Valkamo	2819	C#	2023-04-29 16:41:38
10	Đỗ Duy Tân	3562	C#	2016-10-12 06:06:55

#	User	Length	Language	Date
1	Antonio Molina Lovett	380	C++	2016-08-11 11:04:36
2	塵星	411	C++	2025-08-08 16:51:20
3	huang ian	436	C++	2025-02-15 04:27:53
4	Hidden user	471	C++	2024-11-27 13:23:37
5	Austin Fernandez	474	C++	2019-09-26 18:41:40
6	蔡易霖	480	C++	2023-03-16 06:21:55
7	luHere	480	C++	2023-03-16 14:47:55
8	Manshant Singh Kohli	481	C++	2016-08-30 07:38:42
9	Leonardo Blanger	485	C++	2021-02-09 01:51:25
10	William Gan	489	C++	2018-01-08 20:10:37

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1251	F#	2023-02-12 12:50:34

#	User	Length	Language	Date
1	Norbert Voelker	1092	Go	2021-07-30 11:44:14

#	User	Length	Language	Date
1	David Wärn	266	Haskell	2015-05-18 16:38:06
2	Md Akif Chowdhury	476	Haskell	2023-07-11 19:04:50
3	Hidden user	567	Haskell	2023-01-14 16:51:50
4	Brent Yorgey	572	Haskell	2018-01-02 00:03:12
5	Patrik Lilja	585	Haskell	2016-01-02 16:40:31
6	Mattias Aronsson Adler	674	Haskell	2018-07-24 20:11:42
7	Steinar Simonnes	984	Haskell	2024-05-07 11:49:06
8	Hidden user	2430	Haskell	2019-11-20 17:44:08
9	Jason Hooper	3890	Haskell	2019-10-03 07:50:49

#	User	Length	Language	Date
1	Doug Goodman	634	Java	2018-05-02 18:28:50
2	Prakash Sanyasi	709	Java	2018-05-15 09:36:08
3	Michael Liu	719	Java	2018-06-29 10:47:58
4	Jiru Xu	762	Java	2017-09-17 05:03:46
5	Daniel West	801	Java	2018-02-12 21:00:53
6	Manisha Chandran	815	Java	2022-04-26 21:30:42
7	Felix Burie	820	Java	2016-12-07 18:17:07
8	Salty Otters	830	Java	2019-04-27 00:19:30
9	Natalie Longtin	862	Java	2018-02-12 21:10:41
10	Jeremy Archer	894	Java	2015-05-02 21:10:57

#	User	Length	Language	Date
1	Christian Cederquist	448	JavaScript (SpiderMonkey)	2023-04-05 06:48:12
2	Zach Tschetter	470	JavaScript (SpiderMonkey)	2023-06-15 02:23:24
3	Bjørn Chr. Soltvedt	550	JavaScript (SpiderMonkey)	2016-04-22 01:41:02
4	Peter Kedemo	744	JavaScript (SpiderMonkey)	2016-04-14 22:42:47
5	Markus Nilssen	1177	JavaScript (SpiderMonkey)	2015-09-20 18:36:35

#	User	Length	Language	Date
1	Timothy Gaede	1154	Julia	2024-05-15 06:50:04

#	User	Length	Language	Date
1	Adam Rankin	961	Kotlin	2023-09-08 20:03:27

#	User	Length	Language	Date
1	Andriy Zyevakov	1237	Prolog	2016-11-12 18:38:16

#	User	Length	Language	Date
1	Thomas Feld	260	Python 2	2019-09-26 16:38:55
2	Johan Wind	271	Python 2	2015-09-14 23:15:51
3	Andreas Björklund	281	Python 2	2019-05-10 18:58:41
4	Jonas Kylling	379	Python 2	2015-04-29 22:38:09
5	Justin Su	387	Python 2	2019-09-28 03:37:29
6	Arne Tobias Malkenes Ødegaard	388	Python 2	2015-04-25 11:49:53
7	Ida Bredal Skjørten	425	Python 2	2015-04-25 11:43:16
8	Erik Odenman	432	Python 2	2015-05-15 04:22:32
9	Martin Vonheim Larsen	441	Python 2	2015-04-25 11:35:28
10	Martin Vonheim Larsen	441	Python 2	2015-05-06 17:03:44

#	User	Length	Language	Date
1	Benjamin Z White	158	Python 3	2023-05-20 12:50:13
2	Nino Bašić	215	Python 3	2023-01-07 12:38:57
3	Herman Karlsson	248	Python 3	2019-11-20 00:37:38
4	Ahmed Chamseddine	260	Python 3	2025-01-22 23:32:14
5	Yohannes Melese	272	Python 3	2022-09-05 21:20:13
6	Shashank Bhatt	279	Python 3	2023-07-30 21:03:07
7	Tai Tze Kin	298	Python 3	2024-05-04 10:18:50
8	Roger Bongers	306	Python 3	2020-08-09 04:25:07
9	Louis Abraham	311	Python 3	2017-04-01 15:12:05
10	Tio Shao Wei	311	Python 3	2022-11-20 01:36:11

#	User	Length	Language	Date
1	Thomas Feld	127	Ruby	2023-05-12 11:31:19
2	Paarth Madan	669	Ruby	2019-09-28 03:06:42
3	Jonathan Gin	955	Ruby	2019-09-28 02:51:57

#	User	Length	Language	Date
1	Vincent Lagerros	562	Rust	2025-08-09 16:19:36
2	Bas Dirks	684	Rust	2022-06-17 16:14:49
3	Isak Jägberg	1391	Rust	2023-04-03 10:52:20
4	Arnav Sastry	2708	Rust	2021-08-16 23:53:17

Solution running time distribution