Problem A
Bootstrapping Number — Problem Statistics

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Submissions	3298
Accepted submissions	940
Submission ratio	28.50%
Authors	781
Full solves [?]	678
Full solve Ratio	86.81%

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Bash	2023-09-26 16:10:01
2	Chenzhang Hu	0.06 s	Bash	2023-09-27 15:03:30

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.02 s	C#	2021-06-30 01:19:08
2	Michael Damsgaard	0.04 s	C#	2024-12-07 01:07:25
3	Ella Hulusjö	0.05 s	C#	2024-11-01 16:49:39

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-09-28 15:19:57

#	User	Runtime	Language	Date
1	Jesper Bengtson	0.07 s	F#	2021-05-07 18:17:11

#	User	Runtime	Language	Date
1	Kåre von Geijer	0.00 s	Go	2023-09-11 19:37:04
2	Michael Blunt	0.00 s	Go	2025-09-09 00:18:59
3	Logan Travis	0.00 s	Go	2025-09-10 03:06:12
4	Norbert Voelker	0.08 s	Go	2021-07-04 22:38:14

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2023-09-18 20:17:49
2	Steinar Simonnes	0.00 s	Haskell	2024-10-11 17:09:14
3	Joshua Chenoweth	0.00 s	Haskell	2024-12-03 22:42:08
4	TJ Takei	0.00 s	Haskell	2025-08-04 07:06:05
5	Brent Yorgey	0.01 s	Haskell	2021-03-28 22:17:07
6	Hidden user	0.01 s	Haskell	2021-06-25 15:43:30
7	Agus Sentosa Hermawan	0.01 s	Haskell	2021-11-25 17:55:29
8	Ng Tek In	0.01 s	Haskell	2022-08-30 19:51:10
9	Hidden user	0.01 s	Haskell	2023-09-12 15:38:22

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2024-12-13 16:04:01
2	Muhammad Mairaj	0.04 s	Java	2024-12-15 03:02:27
3	Mack Wong Yoong Yee	0.05 s	Java	2024-06-21 19:40:18
4	Tanja II	0.06 s	Java	2021-03-20 14:31:38
5	Crystal Sharpe	0.06 s	Java	2021-04-05 04:54:26
6	Joachim Borup	0.06 s	Java	2021-05-07 16:11:28
7	Liam Keliher	0.06 s	Java	2021-05-12 04:10:31
8	Ryan Tan	0.06 s	Java	2022-06-22 11:27:23
9	Jax Lee Le Sheng	0.06 s	Java	2022-06-22 11:32:16
10	Ayoub Chegraoui	0.06 s	Java	2022-06-23 03:13:55

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-05-24 13:07:09
2	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2022-03-17 22:04:00

#	User	Runtime	Language	Date
1	Timothy Gaede	0.60 s	Julia	2024-04-20 04:32:38

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.12 s	Kotlin	2022-02-20 20:14:56
2	Jacob Huebner	0.12 s	Kotlin	2022-02-21 04:17:26
3	Adam Rankin	0.16 s	Kotlin	2023-05-11 18:36:44

#	User	Runtime	Language	Date
1	Óðinn Ágústsson	0.00 s	Lua	2025-02-12 16:33:44

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-06-30 01:56:09

#	User	Runtime	Language	Date
1	Maj Stenmark	0.03 s	Python 2	2021-03-20 16:06:26
2	Andreas Björklund	0.03 s	Python 2	2021-04-02 09:49:53
3	Johan Lyts	0.03 s	Python 2	2021-04-03 21:40:08
4	Yanmarshus Bachtiar	0.07 s	Python 2	2021-06-03 11:32:16
5	Daniel Aderemi	0.07 s	Python 2	2025-09-16 05:08:45

#	User	Runtime	Language	Date
1	Weiguo Jiang	0.04 s	Python 3	2022-06-28 23:54:47
2	Lawry Sorenson	0.04 s	Python 3	2022-08-03 03:28:29
3	Ryan Farrell	0.04 s	Python 3	2022-08-03 03:35:26
4	Peter Stauder	0.04 s	Python 3	2022-08-18 22:05:42
5	Mukerem Ali Nur	0.04 s	Python 3	2022-09-07 18:08:28
6	Gustav Kalander	0.04 s	Python 3	2022-09-11 16:05:12
7	Kevin Haagensen Strömberg	0.04 s	Python 3	2022-09-11 19:33:59
8	Nicholas Russell Saerang	0.04 s	Python 3	2022-09-13 19:36:49
9	John Zheng	0.04 s	Python 3	2022-10-05 03:16:34
10	Kelly Dance	0.04 s	Python 3	2022-10-05 03:19:10

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-02-08 13:58:57
2	Brooks Peterson	0.07 s	Ruby	2025-05-09 20:26:10
3	Chenzhang Hu	0.14 s	Ruby	2025-09-22 14:44:35

#	User	Length	Language	Date
1	Thomas Feld	40	Bash	2023-09-26 16:10:01
2	Chenzhang Hu	48	Bash	2025-09-13 17:59:56

#	User	Length	Language	Date
1	Jaan Jaerving	358	C	2022-01-30 18:30:23
2	Arup Ratan Guha	383	C	2021-08-16 16:56:06
3	Ioannis Br	394	C	2023-02-22 22:26:55
4	Mirel Cosulschi	397	C	2025-05-28 14:25:12
5	Hidden user	409	C	2023-09-11 19:15:07
6	Cooper Sizemore	516	C	2025-09-09 00:25:04
7	Jonas Ryssel	590	C	2021-05-07 18:57:08
8	Jelmer Spoor	600	C	2023-11-12 15:11:53
9	Katja Nikole Vernharðsdóttir	605	C	2023-02-02 13:46:04
10	Nicholas Rolland	621	C	2022-05-23 22:46:05

#	User	Length	Language	Date
1	Michael Damsgaard	531	C#	2024-12-07 01:07:25
2	Ella Hulusjö	998	C#	2024-11-01 16:49:39
3	Mikael Fiala-Lundström	1763	C#	2021-06-30 01:19:08

#	User	Length	Language	Date
1	Daníel Hrafn Ólafsson	261	C++	2023-01-31 19:46:53
2	Atli Fannar Franklín	267	C++	2025-02-12 17:02:22
3	PiPer	281	C++	2023-06-11 05:25:41
4	Hidden user	296	C++	2023-02-22 08:54:12
5	Xuân Huy	296	C++	2024-08-13 04:50:50
6	Christian Yongwhan Lim	300	C++	2023-05-30 02:16:42
7	李亦陞（s0323010）	300	C++	2025-02-04 11:31:56
8	Frederick Pek	306	C++	2021-07-05 12:22:58
9	Kopear	309	C++	2022-10-14 23:08:22
10	Joshua Wenata	318	C++	2021-09-27 07:46:46

#	User	Length	Language	Date
1	dick move	124	Crystal	2025-09-28 15:19:57

#	User	Length	Language	Date
1	Jesper Bengtson	1955	F#	2021-05-07 18:17:11

#	User	Length	Language	Date
1	Kåre von Geijer	596	Go	2023-09-11 19:37:04
2	Michael Blunt	644	Go	2025-09-09 00:18:59
3	Logan Travis	1269	Go	2025-09-10 03:06:12
4	Norbert Voelker	1367	Go	2021-07-04 22:38:14

#	User	Length	Language	Date
1	Agus Sentosa Hermawan	219	Haskell	2021-11-25 17:57:27
2	Hidden user	314	Haskell	2023-09-18 20:17:49
3	Steinar Simonnes	344	Haskell	2024-10-11 17:09:14
4	Joshua Chenoweth	624	Haskell	2024-12-03 22:42:08
5	Ng Tek In	718	Haskell	2022-08-30 19:51:10
6	Hidden user	776	Haskell	2023-09-12 15:38:22
7	Brent Yorgey	1907	Haskell	2021-03-28 22:17:07
8	TJ Takei	5729	Haskell	2025-08-15 01:32:43
9	Hidden user	12656	Haskell	2021-06-25 15:43:30

#	User	Length	Language	Date
1	Jon Marius Venstad	359	Java	2023-02-20 18:14:28
2	Logan Pipes	437	Java	2021-05-13 00:52:12
3	Bjørn Christian Seime	440	Java	2023-02-20 18:21:38
4	Eric Leow Yu Quan	455	Java	2021-05-07 16:49:36
5	Abdelrahman Mokbel	473	Java	2021-10-29 03:33:27
6	Caleb Early	479	Java	2023-11-01 21:06:00
7	Hidden user	518	Java	2022-06-27 01:56:30
8	Doug Goodman	524	Java	2021-12-15 18:44:07
9	Egill Magnússon	536	Java	2023-02-09 00:06:24
10	Sölvi Santos	562	Java	2023-01-30 13:27:43

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	462	JavaScript (SpiderMonkey)	2023-05-24 13:07:09
2	Bjørn Chr. Soltvedt	1665	JavaScript (SpiderMonkey)	2022-03-17 22:04:00

#	User	Length	Language	Date
1	Timothy Gaede	4401	Julia	2024-04-20 04:32:38

#	User	Length	Language	Date
1	Jacob Huebner	408	Kotlin	2022-02-21 04:17:26
2	Adam Rankin	1037	Kotlin	2023-05-11 18:36:44
3	Nicholas Johnson	2634	Kotlin	2022-02-20 20:14:56

#	User	Length	Language	Date
1	Óðinn Ágústsson	614	Lua	2025-02-12 16:33:44

#	User	Length	Language	Date
1	Renate	356	PHP	2021-06-30 01:56:09

#	User	Length	Language	Date
1	Andreas Björklund	277	Python 2	2021-04-02 09:49:53
2	Maj Stenmark	317	Python 2	2021-03-20 16:06:26
3	Daniel Aderemi	434	Python 2	2025-09-16 05:08:45
4	Johan Lyts	438	Python 2	2021-04-03 21:40:08
5	Yanmarshus Bachtiar	535	Python 2	2021-06-03 11:32:16

#	User	Length	Language	Date
1	Lee Isaac	68	Python 3	2023-05-15 07:44:54
2	Michael Goldwasser	85	Python 3	2025-09-13 06:04:52
3	Herman Aarebrot	87	Python 3	2024-12-16 10:04:53
4	Benjamin Z White	94	Python 3	2023-05-12 23:13:01
5	David Aldenbro	94	Python 3	2025-10-21 11:38:03
6	James Rettie	100	Python 3	2022-10-11 03:13:07
7	Brandon Foong	102	Python 3	2023-04-07 15:45:13
8	Gustav Kalander	109	Python 3	2022-09-11 16:05:12
9	Charles Ancheta	112	Python 3	2023-04-13 02:00:10
10	Patrick Jung	119	Python 3	2022-01-01 22:38:36

#	User	Length	Language	Date
1	Thomas Feld	40	Ruby	2023-05-15 10:35:56
2	Chenzhang Hu	156	Ruby	2025-09-22 14:44:35
3	Brooks Peterson	326	Ruby	2025-05-09 20:26:10

#	User	Length	Language	Date
1	Valdimar Örn	321	Rust	2023-02-07 12:05:30
2	David Rasch	480	Rust	2022-10-29 17:12:09
3	Artur Khuziakhmetov	525	Rust	2022-07-06 20:59:15
4	Bas Dirks	537	Rust	2022-02-24 22:22:06
5	Þorvaldur Tumi Baldursson	591	Rust	2023-07-10 14:21:37
6	Griffin Hiscoke	612	Rust	2023-09-11 19:12:09
7	Eric Pinter	1130	Rust	2021-07-02 18:23:33
8	Max Hu	1176	Rust	2025-07-26 00:07:03
9	Vincent Lagerros	1338	Rust	2024-11-17 21:46:42
10	Krish Lal	1382	Rust	2025-09-09 09:00:20

Solution running time distribution