Problem I
Grandpa Bernie — Problem Statistics

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Submissions	10507
Accepted submissions	3957
Submission ratio	37.66%
Authors	3188
Accepted authors	2735
Author ratio	85.79%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.07 s	C	2018-12-20 18:31:30
2	Hidden user	0.09 s	C	2017-06-06 09:51:10
3	Martin Stensgård	0.10 s	C	2021-01-03 00:57:36
4	Sami Al Chalati	0.13 s	C	2024-10-24 20:44:34

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.19 s	C#	2019-05-15 17:03:09
2	Klas af Geijerstam	0.26 s	C#	2016-12-14 14:23:57
3	Martin Wedege Hansen	0.37 s	C#	2023-01-31 16:12:18
4	Andreas Kongstad	0.42 s	C#	2023-01-31 14:03:49
5	Casey Hofland	0.46 s	C#	2017-09-04 13:14:50
6	Yuwono Bangun Nagoro	0.47 s	C#	2016-11-09 11:33:29
7	Tristan Close	0.47 s	C#	2017-04-01 08:35:19
8	Jie He	0.48 s	C#	2017-04-29 18:14:42
9	Chris Wong	0.59 s	C#	2021-02-15 00:42:55
10	Umar Rasyid	0.60 s	C#	2025-01-01 06:50:13

#	User	Runtime	Language	Date
1	Øyvind Almli	0.03 s	C++	2022-07-12 00:44:22
2	Hidden user	0.04 s	C++	2017-06-06 09:26:02
3	Agis Daniels	0.04 s	C++	2021-12-17 18:12:22
4	Jim Zheng	0.05 s	C++	2020-02-11 20:01:35
5	Grae Yeandle	0.06 s	C++	2017-01-28 14:32:21
6	Mohammad Sadeghi	0.06 s	C++	2019-08-13 22:19:54
7	Zhang Jikun	0.06 s	C++	2022-07-13 17:41:09
8	Lee Geng Yu	0.07 s	C++	2018-03-04 11:35:30
9	Marcin Chłond	0.07 s	C++	2018-03-16 17:00:42
10	Tan Yuan Cai	0.07 s	C++	2018-04-04 06:28:45

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.38 s	F#	2023-03-06 18:22:20

#	User	Runtime	Language	Date
1	Husain Satan	0.47 s	Go	2023-11-06 13:51:07
2	Sander Hellesø	0.56 s	Go	2019-04-19 05:46:28
3	Krzysztof Gibuła	0.59 s	Go	2021-05-09 21:50:23
4	James Robb	0.66 s	Go	2020-04-29 23:31:52
5	James Robb	0.66 s	Go	2020-05-12 12:03:10

#	User	Runtime	Language	Date
1	Øyvind Almli	0.42 s	Haskell	2022-05-21 15:48:14
2	BlackcapCoder	0.49 s	Haskell	2019-05-10 20:28:58
3	Brent Yorgey	0.61 s	Haskell	2018-10-15 18:07:03
4	Hidden user	0.96 s	Haskell	2021-07-15 18:33:25

#	User	Runtime	Language	Date
1	Clement Oh	0.19 s	Java	2022-08-27 19:01:18
2	Sven Rönnbäck	0.23 s	Java	2022-11-27 15:48:01
3	Asmus Tørsleff	0.32 s	Java	2022-02-01 11:04:40
4	William Fiset	0.36 s	Java	2016-07-16 04:20:06
5	Emil Bak-Møller	0.36 s	Java	2021-02-02 11:39:19
6	Samuel Klingström	0.39 s	Java	2017-07-22 11:54:45
7	Darko Aleksic	0.42 s	Java	2020-03-20 07:34:31
8	Jakob Kallestad	0.45 s	Java	2018-09-29 11:46:55
9	Rachel Krohn	0.47 s	Java	2025-03-14 22:14:01
10	Ninghui Li	0.48 s	Java	2020-02-18 05:02:10

#	User	Runtime	Language	Date
1	Alexander Fang	0.45 s	JavaScript (Node.js)	2025-03-28 16:59:44
2	Christopher Walther	0.74 s	JavaScript (Node.js)	2021-04-17 01:40:09
3	Nicklas Østerberg	0.93 s	JavaScript (Node.js)	2025-01-31 12:22:42
4	Róbert Kristian Freysson	0.96 s	JavaScript (Node.js)	2023-03-18 16:03:13

#	User	Runtime	Language	Date
1	Christian Cederquist	0.30 s	JavaScript (SpiderMonkey)	2023-06-08 17:04:42
2	Bjørn Chr. Soltvedt	0.39 s	JavaScript (SpiderMonkey)	2016-04-27 00:03:00
3	Cole Rauh	0.41 s	JavaScript (SpiderMonkey)	2016-10-17 01:00:57
4	Christopher Walther	0.45 s	JavaScript (SpiderMonkey)	2021-04-17 01:33:07
5	Andri Rafn	0.57 s	JavaScript (SpiderMonkey)	2018-04-24 20:18:02
6	Peter Kedemo	0.60 s	JavaScript (SpiderMonkey)	2016-06-01 19:05:22
7	Zach Tschetter	0.69 s	JavaScript (SpiderMonkey)	2023-05-25 20:51:24

#	User	Runtime	Language	Date
1	Jahid Hasan Imon	0.63 s	Kotlin	2020-08-27 01:27:23
2	Johnny Baloney	0.65 s	Kotlin	2022-01-16 15:28:44
3	Hidden user	0.75 s	Kotlin	2019-12-16 05:10:12
4	Phường Lên	0.76 s	Kotlin	2019-12-16 07:47:00
5	Adam Koprowski	0.84 s	Kotlin	2020-08-30 00:17:55
6	Benjamin Laurence Erickson	0.85 s	Kotlin	2018-07-20 20:22:00

#	User	Runtime	Language	Date
1	Bjarni Jens Kristinsson	0.15 s	Python 2	2019-05-05 21:06:19
2	Christofer Ohlsson	0.16 s	Python 2	2016-04-26 07:35:34
3	Ho Yin Ng	0.16 s	Python 2	2016-10-19 02:29:01
4	Rachel Campbell	0.16 s	Python 2	2017-02-03 06:55:43
5	Maksym Bendeberia	0.16 s	Python 2	2017-07-03 16:58:09
6	Hidden user	0.16 s	Python 2	2018-02-02 23:33:12
7	Kristrún Skúladóttir	0.16 s	Python 2	2019-05-13 23:32:56
8	Jessica Fang	0.17 s	Python 2	2017-01-30 06:08:16
9	Denis Godunov	0.17 s	Python 2	2017-05-31 12:21:53
10	Brynjar Sigurðsson	0.17 s	Python 2	2018-04-24 18:27:29

#	User	Runtime	Language	Date
1	Petr	0.15 s	Python 3	2025-02-17 19:58:46
2	Øyvind Almli	0.17 s	Python 3	2021-11-15 17:09:17
3	Hidden user	0.18 s	Python 3	2025-02-07 22:31:46
4	Pan Boyi	0.19 s	Python 3	2022-11-02 11:38:06
5	Christian Emil Stender	0.19 s	Python 3	2023-01-31 15:45:50
6	Rebecca Jackson	0.19 s	Python 3	2024-12-27 04:08:58
7	Nicolas Ladendorf	0.19 s	Python 3	2025-02-07 22:21:02
8	Hidden user	0.19 s	Python 3	2025-02-07 22:44:52
9	Alexander Thoren	0.19 s	Python 3	2025-02-13 10:20:56
10	Hidden user	0.19 s	Python 3	2025-03-02 14:25:37

#	User	Runtime	Language	Date
1	Hidden user	0.35 s	Ruby	2019-03-29 15:52:04
2	Andreas Severin Hauch Trøstrup	0.40 s	Ruby	2023-02-03 01:10:44
3	Kieran Maharaj	0.46 s	Ruby	2020-07-04 11:00:02
4	Thomas Feld	0.49 s	Ruby	2023-05-04 13:23:44
5	Frederik Petersen	0.58 s	Ruby	2023-02-02 14:24:46

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.03 s	Rust	2025-03-08 23:55:00
2	Florian Nagel	0.07 s	Rust	2019-10-30 21:54:32
3	Connor Skees	0.07 s	Rust	2020-10-25 19:07:20
4	Pahlevi Fikri Auliya	0.07 s	Rust	2020-11-02 00:37:18
5	Marcus Östling	0.07 s	Rust	2024-03-03 20:47:56
6	Egor Kulikov	0.07 s	Rust	2024-12-20 12:45:38
7	Aaron Lengyel	0.14 s	Rust	2022-11-10 07:58:12
8	Malthe Mathias Mølgaard Larsen	0.17 s	Rust	2023-01-31 16:57:33
9	Malte Kildelund Rosenkilde	0.19 s	Rust	2025-02-04 09:27:48
10	Bas Dirks	0.20 s	Rust	2022-01-17 17:50:13

#	User	Length	Language	Date
1	Martin Stensgård	2083	C	2020-06-01 01:38:12
2	Sami Al Chalati	2202	C	2024-10-24 20:44:34
3	Hidden user	3470	C	2017-06-06 09:51:10
4	Bergur Snorrason	5544	C	2018-12-20 18:31:30

#	User	Length	Language	Date
1	Tristan Close	778	C#	2017-04-01 08:35:19
2	Hidden user	1017	C#	2022-02-01 11:44:34
3	Jie He	1128	C#	2017-04-29 18:14:42
4	Martin Wedege Hansen	1140	C#	2023-01-31 16:12:18
5	Yuwono Bangun Nagoro	1168	C#	2016-11-09 11:33:29
6	Hamdanil Rasyid	1313	C#	2024-12-30 17:05:51
7	Umar Rasyid	1363	C#	2025-01-01 06:50:13
8	Linda Andersson	1391	C#	2021-08-25 16:09:16
9	Casey Hofland	1426	C#	2017-09-04 13:14:50
10	Egill Örn Benediktsson	1502	C#	2021-04-27 16:36:15

#	User	Length	Language	Date
1	Randall Rinehart	240	C++	2024-02-21 06:32:39
2	Matthew Shank	259	C++	2024-02-19 04:03:11
3	Hidden user	351	C++	2024-03-15 01:47:00
4	Josephine Tanadi	361	C++	2018-03-31 21:31:25
5	Mustefa Kamil	367	C++	2020-12-25 08:28:13
6	JY Loh	371	C++	2022-12-09 12:28:39
7	Putra Mohammad Danish Bin Mohd Rafee	383	C++	2018-04-05 18:46:20
8	Mustefa Kamil	387	C++	2021-03-31 15:49:23
9	Yeung Man Tsung	388	C++	2022-06-21 18:13:17
10	Manuel Alejandro Rodriguez Rivera	401	C++	2021-11-16 13:32:04

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1178	F#	2023-03-06 18:22:20

#	User	Length	Language	Date
1	Krzysztof Gibuła	733	Go	2021-05-09 21:50:23
2	Sander Hellesø	1341	Go	2019-04-19 05:46:28
3	Husain Satan	1343	Go	2023-11-06 13:51:07
4	James Robb	1530	Go	2020-04-29 23:31:52
5	James Robb	1530	Go	2020-05-12 12:03:10

#	User	Length	Language	Date
1	BlackcapCoder	553	Haskell	2019-05-10 12:56:02
2	Brent Yorgey	1184	Haskell	2018-10-15 18:07:03
3	Øyvind Almli	1299	Haskell	2021-11-15 07:28:24
4	Hidden user	14850	Haskell	2021-07-15 18:33:25

#	User	Length	Language	Date
1	Mitch Price	777	Java	2016-10-06 00:51:59
2	Javier Lee	805	Java	2023-10-08 20:51:48
3	Kaung Htet Wai Yan	870	Java	2023-06-04 18:21:05
4	Jeremy Lim	964	Java	2023-11-20 08:32:39
5	Hoo Kai Sng	989	Java	2024-04-25 16:24:41
6	Eric Leow Yu Quan	1003	Java	2021-03-05 06:31:02
7	Liu Shuyang	1010	Java	2020-03-05 06:07:45
8	Lauren Ji	1023	Java	2022-04-09 17:42:48
9	Abdelrahman Mokbel	1024	Java	2022-10-03 22:34:59
10	Joshua Chin	1029	Java	2025-03-03 11:16:24

#	User	Length	Language	Date
1	Róbert Kristian Freysson	1034	JavaScript (Node.js)	2023-03-18 16:03:13
2	Alexander Fang	1058	JavaScript (Node.js)	2025-03-28 16:59:44
3	Christopher Walther	1222	JavaScript (Node.js)	2021-04-17 01:40:09
4	Nicklas Østerberg	1309	JavaScript (Node.js)	2025-01-31 12:22:42

#	User	Length	Language	Date
1	Christian Cederquist	357	JavaScript (SpiderMonkey)	2023-06-08 17:01:27
2	Bjørn Chr. Soltvedt	371	JavaScript (SpiderMonkey)	2016-04-27 00:03:00
3	Cole Rauh	413	JavaScript (SpiderMonkey)	2016-10-17 01:00:57
4	Zach Tschetter	531	JavaScript (SpiderMonkey)	2023-05-25 20:54:08
5	Peter Kedemo	562	JavaScript (SpiderMonkey)	2016-06-01 19:05:22
6	Andri Rafn	569	JavaScript (SpiderMonkey)	2018-04-24 20:18:02
7	Christopher Walther	1003	JavaScript (SpiderMonkey)	2021-04-17 01:33:07

#	User	Length	Language	Date
1	Benjamin Laurence Erickson	792	Kotlin	2018-07-20 20:22:00
2	Phường Lên	869	Kotlin	2019-12-16 07:47:00
3	Adam Koprowski	980	Kotlin	2020-08-30 00:17:55
4	Johnny Baloney	1005	Kotlin	2022-01-16 15:28:44
5	Hidden user	1026	Kotlin	2019-12-16 05:10:12
6	Jahid Hasan Imon	1924	Kotlin	2020-08-27 01:27:23

#	User	Length	Language	Date
1	Thomas Feld	222	Python 2	2019-09-05 13:38:29
2	Lars Åström	261	Python 2	2018-11-13 08:56:19
3	Yan Kalchevsky	273	Python 2	2017-01-27 22:09:57
4	Andreas Björklund	273	Python 2	2019-06-24 18:40:26
5	Sergey Pashkovsky	275	Python 2	2017-11-27 15:25:26
6	Fromsa Hera	281	Python 2	2018-09-26 18:05:52
7	Matt Bonsall	284	Python 2	2016-10-06 17:04:34
8	Ragur Krishnan	288	Python 2	2019-09-23 00:56:23
9	Riko Jacob	291	Python 2	2019-03-04 11:29:41
10	Hidden user	294	Python 2	2016-12-09 19:02:47

#	User	Length	Language	Date
1	Charles Ancheta	173	Python 3	2023-04-15 04:30:02
2	Ahmed Chamseddine	197	Python 3	2025-01-23 08:23:20
3	Farzam Abrishami	223	Python 3	2023-12-31 02:53:07
4	Lim Yong Sheng	227	Python 3	2023-11-14 11:42:53
5	Ashay Sarda	228	Python 3	2022-09-11 21:22:31
6	Thibault Raffaillac	229	Python 3	2020-02-27 18:11:25
7	Yonathan Assefa	238	Python 3	2020-12-25 07:27:18
8	Hidden user	241	Python 3	2023-05-14 00:58:09
9	I Coello	242	Python 3	2025-03-06 23:09:07
10	Albert Ross Johannessen	242	Python 3	2024-02-02 16:15:56

#	User	Length	Language	Date
1	Thomas Feld	124	Ruby	2023-05-04 13:23:44
2	Andreas Severin Hauch Trøstrup	197	Ruby	2023-02-03 01:12:41
3	Frederik Petersen	215	Ruby	2023-02-02 14:24:46
4	Hidden user	370	Ruby	2019-03-29 15:52:04
5	Kieran Maharaj	552	Ruby	2020-07-04 11:00:02

#	User	Length	Language	Date
1	Malte Kildelund Rosenkilde	868	Rust	2025-02-04 09:27:48
2	Bas Dirks	1014	Rust	2022-01-17 17:50:13
3	Ishtiaq Hussain Naqi	1078	Rust	2024-10-08 08:45:45
4	Freek van Keulen	1234	Rust	2022-12-01 08:31:15
5	David Rasch	1247	Rust	2020-11-13 12:39:44
6	Andreas Just Petersen	1303	Rust	2023-01-31 14:39:17
7	Malthe Mathias Mølgaard Larsen	1312	Rust	2023-01-31 16:57:33
8	Eric Pinter	1348	Rust	2020-08-04 18:17:54
9	Albert Ross Johannessen	1363	Rust	2024-02-03 14:34:40
10	Zack Groff	1372	Rust	2019-08-07 14:51:07

Solution running time distribution