Problem A
Which Base is it Anyway? — Problem Statistics

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Submissions	3401
Accepted submissions	1313
Submission ratio	38.61%
Authors	1199
Full solves [?]	1060
Full solve Ratio	88.41%

#	User	Runtime	Language	Date
1	Liam Percy	0.02 s	C#	2018-09-01 03:57:00
2	Dan Wolff	0.02 s	C#	2018-10-10 21:23:40
3	Leslie Yip	0.02 s	C#	2022-09-17 10:04:55
4	Zach Champeau	0.05 s	C#	2023-08-25 20:46:06
5	Benjamin Applegate	0.05 s	C#	2023-08-30 22:29:13
6	Michael Damsgaard	0.05 s	C#	2025-01-05 06:38:16

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-29 04:35:57

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2023-02-13 18:15:18

#	User	Runtime	Language	Date
1	James Robb	0.02 s	Go	2020-05-07 19:14:52
2	Ainun Nazieb	0.02 s	Go	2020-09-30 14:23:02
3	Erik Rairden	0.02 s	Go	2021-01-24 08:46:15
4	Norbert Voelker	0.02 s	Go	2021-07-16 22:16:45
5	James Robb	0.08 s	Go	2020-05-12 12:31:14

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2017-10-25 04:51:26
2	Øyvind Almli	0.00 s	Haskell	2022-03-31 20:57:54
3	Hidden user	0.00 s	Haskell	2022-12-01 02:09:02
4	Gustaf Pihl	0.00 s	Haskell	2024-05-04 02:05:29
5	Steinar Simonnes	0.00 s	Haskell	2024-06-15 13:08:26
6	Hidden user	0.01 s	Haskell	2019-11-02 18:46:38
7	Jan Hrček	0.01 s	Haskell	2021-04-08 13:59:24
8	Tim Put	0.01 s	Haskell	2021-07-30 22:08:59
9	Eirik Halvard Sæther	0.01 s	Haskell	2021-09-22 19:02:28
10	Agus Sentosa Hermawan	0.01 s	Haskell	2021-10-31 09:15:54

#	User	Runtime	Language	Date
1	tamim shahriar	0.04 s	Java	2024-11-07 18:41:56
2	Nick Wu	0.05 s	Java	2017-10-21 19:00:54
3	Minwei Xu	0.05 s	Java	2017-10-21 19:17:42
4	Zach Glick	0.05 s	Java	2017-10-21 19:36:43
5	Liam Keliher	0.05 s	Java	2018-01-22 02:26:44
6	Isaac Lee	0.05 s	Java	2018-03-19 21:04:32
7	Kristoffer Åhgren	0.05 s	Java	2018-03-31 13:43:00
8	Samuel Klingström	0.05 s	Java	2018-06-07 21:09:15
9	Zhuohan Yang	0.06 s	Java	2018-01-01 04:22:09
10	Morgan K Bender	0.06 s	Java	2018-01-28 15:58:55

#	User	Runtime	Language	Date
1	Oscar Peulicke	0.41 s	JavaScript (Node.js)	2020-10-24 15:14:27
2	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-06 08:23:29
3	Mikael Fiala-Lundström	0.42 s	JavaScript (Node.js)	2021-06-21 01:12:57

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-10-24 15:00:21
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-30 16:27:05
3	Casey Smith	0.03 s	JavaScript (SpiderMonkey)	2019-02-16 22:32:35

#	User	Runtime	Language	Date
1	Timothy Gaede	0.39 s	Julia	2025-11-26 10:32:04

#	User	Runtime	Language	Date
1	Jahid Hasan Imon	0.14 s	Kotlin	2020-07-02 19:57:19
2	Danny Mittal	0.14 s	Kotlin	2020-10-08 23:07:09
3	Ola Sundell	0.18 s	Kotlin	2018-09-13 09:11:08
4	Adam Rankin	0.18 s	Kotlin	2023-05-11 07:24:54
5	Neil Harmon	0.21 s	Kotlin	2019-07-29 09:08:57
6	Phường Lên	0.22 s	Kotlin	2020-01-09 02:20:40
7	Sondre Martin Bakke	0.23 s	Kotlin	2024-09-19 16:35:37

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-09-21 07:35:41

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2019-06-23 17:16:41

#	User	Runtime	Language	Date
1	Jeff Robertson	0.03 s	Python 2	2017-10-21 19:04:51
2	Haochen Chen	0.03 s	Python 2	2017-10-21 19:12:14
3	Adam Barth	0.03 s	Python 2	2017-10-21 19:20:19
4	Andrew Maczugowski	0.03 s	Python 2	2017-10-21 19:28:23
5	Alyssa Herbst	0.03 s	Python 2	2017-10-21 19:39:25
6	Namgun Kim	0.03 s	Python 2	2017-10-21 19:46:45
7	Joey Thomas	0.03 s	Python 2	2017-10-21 21:55:31
8	Alexandria Davis	0.03 s	Python 2	2017-10-21 22:06:17
9	Ryan Beck	0.03 s	Python 2	2017-10-21 22:07:24
10	Jonas Deichelmann	0.03 s	Python 2	2017-10-21 22:28:54

#	User	Runtime	Language	Date
1	Allen Kim	0.02 s	Python 3	2017-10-21 19:01:01
2	Goutham Rajendran	0.02 s	Python 3	2017-10-21 19:11:48
3	Jonathon Arbaugh	0.02 s	Python 3	2017-10-21 19:26:48
4	Houzhao Zhu	0.02 s	Python 3	2017-10-21 19:28:22
5	Ziyang Zhang	0.02 s	Python 3	2017-10-21 19:28:54
6	Chinmay Viraj Raut	0.02 s	Python 3	2017-10-21 19:33:34
7	Ran Duan	0.02 s	Python 3	2017-10-21 19:35:27
8	Ran Duan	0.02 s	Python 3	2017-10-21 19:36:06
9	Anshil	0.02 s	Python 3	2017-10-21 19:36:51
10	Junlin Wang	0.02 s	Python 3	2017-10-21 19:40:14

#	User	Runtime	Language	Date
1	Miorel Palii	0.03 s	Ruby	2017-10-21 21:48:20
2	Hidden user	0.04 s	Ruby	2019-02-28 11:57:38
3	Hidden user	0.05 s	Ruby	2021-06-14 16:14:56
4	Thomas Feld	0.06 s	Ruby	2023-01-31 10:44:39
5	Clement Oh	0.06 s	Ruby	2023-10-25 12:33:44

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-01-18 12:26:42
2	poppyer	0.00 s	Rust	2022-03-13 22:17:48
3	Vincent Lagerros	0.00 s	Rust	2025-08-10 16:13:34

#	User	Length	Language	Date
1	Raymond Yang	369	C	2018-06-02 22:15:42
2	Larry D. Pyeatt	474	C	2021-11-20 22:11:09
3	Mikael K Eriksson	490	C	2021-06-14 23:39:20
4	Sean Malloy	548	C	2019-10-26 02:05:49
5	Tyler Mulholland	581	C	2023-02-17 23:30:06
6	Sardar Mazyar Daryaee	600	C	2022-08-11 20:24:15
7	arda atci	655	C	2022-04-21 23:34:34
8	Eric McKnight	657	C	2017-10-21 19:09:58
9	Hidden user	739	C	2017-11-27 03:37:28
10	Naveen Kumar S	837	C	2025-05-02 15:58:47

#	User	Length	Language	Date
1	Benjamin Applegate	497	C#	2023-08-30 22:29:13
2	Leslie Yip	752	C#	2022-09-17 10:04:55
3	Liam Percy	818	C#	2018-09-01 03:57:00
4	Michael Damsgaard	854	C#	2025-01-05 06:38:16
5	Zach Champeau	1124	C#	2023-08-25 20:46:06
6	Dan Wolff	3216	C#	2018-10-10 21:23:40

#	User	Length	Language	Date
1	Frans Meulenbroeks	230	C++	2025-02-16 16:22:24
2	Way Tan	373	C++	2018-12-04 19:03:54
3	Grae Yeandle	395	C++	2018-04-02 09:45:55
4	Michael Chen	431	C++	2020-11-17 10:42:58
5	Hidden user	436	C++	2020-04-07 10:22:10
6	Darshan Godhia	439	C++	2017-10-21 19:10:14
7	人外沙耶	441	C++	2020-11-28 08:25:11
8	Austin Fernandez	444	C++	2019-08-31 13:26:29
9	William Gan	464	C++	2017-12-31 05:54:21
10	Armen Andreasyan	466	C++	2018-12-21 15:45:06

#	User	Length	Language	Date
1	Hidden user	799	Common Lisp	2019-07-29 04:35:57

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	722	F#	2023-02-13 18:15:18

#	User	Length	Language	Date
1	Ainun Nazieb	357	Go	2020-09-30 14:23:02
2	Erik Rairden	544	Go	2021-01-24 08:49:22
3	Norbert Voelker	1070	Go	2021-07-16 22:16:45
4	James Robb	2026	Go	2020-05-12 12:31:14
5	James Robb	2128	Go	2020-05-07 19:14:52

#	User	Length	Language	Date
1	Gustaf Pihl	431	Haskell	2024-05-04 02:07:22
2	Øyvind Almli	453	Haskell	2022-03-31 20:57:54
3	Brent Yorgey	591	Haskell	2017-10-25 04:51:26
4	Tim Put	624	Haskell	2021-07-30 22:08:59
5	Jan Hrček	662	Haskell	2021-04-08 13:59:24
6	Agus Sentosa Hermawan	719	Haskell	2021-10-31 09:15:54
7	Steinar Simonnes	772	Haskell	2024-06-15 13:08:26
8	Eirik Halvard Sæther	818	Haskell	2021-09-22 19:02:28
9	Hidden user	871	Haskell	2022-12-01 02:09:02
10	Hidden user	8169	Haskell	2019-11-02 18:46:38

#	User	Length	Language	Date
1	Jiru Xu	485	Java	2017-10-21 19:22:51
2	Caeden Whitaker	524	Java	2020-10-18 06:33:34
3	Kristiyan Balabanov	531	Java	2023-07-25 00:48:42
4	Doug Goodman	533	Java	2018-06-15 20:29:35
5	Hidden user	544	Java	2019-03-21 16:35:03
6	Stela Palii	550	Java	2017-10-21 20:41:18
7	Shekhar Dewan	555	Java	2018-02-16 00:52:44
8	Ali Pervaiz	570	Java	2019-03-27 21:49:32
9	Aldric Bek	572	Java	2019-04-25 04:33:36
10	Madison Lewis	579	Java	2017-10-21 20:36:22

#	User	Length	Language	Date
1	Oscar Peulicke	469	JavaScript (Node.js)	2020-10-24 15:14:27
2	Mikael Fiala-Lundström	884	JavaScript (Node.js)	2021-06-21 01:12:57
3	Howard Tin Chi Chan	1028	JavaScript (Node.js)	2021-02-06 08:23:29

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	245	JavaScript (SpiderMonkey)	2017-10-24 15:00:21
2	Casey Smith	293	JavaScript (SpiderMonkey)	2019-02-16 22:32:35
3	Christian Pilegaard Cederquist	461	JavaScript (SpiderMonkey)	2023-03-30 16:27:05

#	User	Length	Language	Date
1	Timothy Gaede	886	Julia	2025-11-26 10:32:04

#	User	Length	Language	Date
1	Phường Lên	303	Kotlin	2020-01-09 02:20:40
2	Sondre Martin Bakke	401	Kotlin	2024-09-19 16:35:37
3	Danny Mittal	700	Kotlin	2020-10-08 23:07:09
4	Adam Rankin	811	Kotlin	2023-05-11 07:24:54
5	Ola Sundell	854	Kotlin	2018-09-13 09:11:08
6	Neil Harmon	893	Kotlin	2019-07-29 09:08:57
7	Jahid Hasan Imon	1811	Kotlin	2020-07-02 19:57:19

#	User	Length	Language	Date
1	Ingemar Ragnemalm	891	Pascal	2018-09-21 07:35:41

#	User	Length	Language	Date
1	Andriy Zyevakov	891	Prolog	2019-06-23 17:16:41

#	User	Length	Language	Date
1	Thomas Feld	127	Python 2	2019-09-23 15:02:39
2	Jeff Robertson	145	Python 2	2017-10-21 19:04:51
3	Andreas Eisele	145	Python 2	2018-09-07 10:00:41
4	Liam Kellogg	145	Python 2	2023-09-03 23:39:20
5	Akif Patel	184	Python 2	2019-04-25 02:36:23
6	Hidden user	186	Python 2	2018-12-14 21:39:05
7	Andrew Maczugowski	206	Python 2	2017-10-21 19:28:23
8	Justin Su	208	Python 2	2018-10-01 21:38:35
9	Dmitry Lyubshin	213	Python 2	2018-04-24 10:37:43
10	Lars Åström	213	Python 2	2018-08-01 23:14:28

#	User	Length	Language	Date
1	Clement Oh	91	Python 3	2023-09-12 05:29:52
2	Lasse Letager Hansen	97	Python 3	2023-11-18 23:01:11
3	Nguyên Khôi Đỗ	104	Python 3	2025-01-16 17:41:28
4	Hidden user	104	Python 3	2025-01-23 19:32:39
5	a_b__c	105	Python 3	2021-03-08 17:09:30
6	Si Jie Tan	105	Python 3	2026-02-13 03:02:27
7	Eugin Pahk	106	Python 3	2023-09-01 00:47:33
8	Ahmed Chamseddine	110	Python 3	2024-06-14 19:08:45
9	Lee Isaac	120	Python 3	2022-12-18 19:30:06
10	Timothy Baeckelant	122	Python 3	2025-03-11 00:13:37

#	User	Length	Language	Date
1	Thomas Feld	57	Ruby	2023-01-31 10:47:51
2	Clement Oh	111	Ruby	2023-10-25 12:33:44
3	Hidden user	130	Ruby	2021-06-14 16:14:56
4	Miorel Palii	165	Ruby	2017-10-21 21:48:20
5	Hidden user	232	Ruby	2019-02-28 11:57:38

#	User	Length	Language	Date
1	Vincent Lagerros	486	Rust	2025-08-10 16:13:34
2	Bas Dirks	547	Rust	2022-01-18 12:26:42
3	poppyer	761	Rust	2022-03-13 22:17:48

Solution running time distribution