Problem A
Tower Construction — Problem Statistics

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Submissions	4364
Accepted submissions	2363
Submission ratio	54.15%
Authors	2171
Accepted authors	2031
Author ratio	93.55%

#	User	Runtime	Language	Date
1	Sebastian Banert	0.02 s	Ada	2024-09-28 21:46:33

#	User	Runtime	Language	Date
1	Danny Robinson	0.03 s	Bash	2023-09-04 18:29:17
2	Thomas Feld	0.03 s	Bash	2023-09-08 15:15:53
3	Chenzhang Hu	0.09 s	Bash	2024-06-26 18:24:27

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2020-09-04 12:46:27
2	Agis Daniels	0.00 s	C	2020-11-08 22:28:08
3	Sambit Palit	0.01 s	C	2020-10-16 06:48:43
4	dimas	0.01 s	C	2020-11-10 03:25:05
5	Vincent Khrishardy	0.01 s	C	2020-11-10 03:29:55
6	Oris Satria Mustopa	0.01 s	C	2020-11-11 05:14:51
7	Ian Howell	0.01 s	C	2020-11-24 18:59:30
8	Roberto Kreshna	0.01 s	C	2020-11-27 16:40:11
9	Emil Wihlander	0.01 s	C	2020-12-05 07:41:40
10	Thao Tran	0.01 s	C	2020-12-18 03:09:43

#	User	Runtime	Language	Date
1	Bryce Goddard	0.06 s	C#	2020-08-21 21:12:45
2	Henrik Hallbert	0.06 s	C#	2020-08-25 16:19:24
3	Anders Parsberg Wagner	0.06 s	C#	2020-09-07 16:12:56
4	Anders Lapiki	0.06 s	C#	2020-09-18 16:12:17
5	Daniel Ledger	0.06 s	C#	2020-10-10 14:10:36
6	Thomas Norris	0.06 s	C#	2020-11-14 22:04:59
7	Dang Tran Tuan Trung	0.06 s	C#	2021-08-14 14:50:41
8	Pascal Stoop	0.06 s	C#	2021-08-31 23:49:00
9	Stijn van Veen	0.06 s	C#	2021-09-02 18:23:09
10	Jordy Frijters	0.06 s	C#	2021-09-03 19:22:10

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C++	2020-08-30 04:48:44
2	Frank Endriss	0.00 s	C++	2020-09-03 13:38:28
3	Eyleifur Bjarkason	0.00 s	C++	2020-10-02 20:54:48
4	Joel Au	0.00 s	C++	2020-10-26 02:42:31
5	Agis Daniels	0.00 s	C++	2020-11-08 22:25:00
6	Andreas Wingqvist	0.00 s	C++	2023-04-17 16:29:05
7	Mårten Wiman	0.01 s	C++	2020-07-15 20:58:59
8	Marcus Andersson	0.01 s	C++	2020-07-18 13:46:02
9	Fredrik Ekholm	0.01 s	C++	2020-07-18 19:50:31
10	Loke Gustafsson	0.01 s	C++	2020-07-19 14:33:42

#	User	Runtime	Language	Date
1	David Vinje	0.09 s	F#	2022-03-21 09:17:51
2	Jacob Harris Cryer Kragh	0.09 s	F#	2022-07-13 22:36:09
3	Mikael Fangel	0.11 s	F#	2023-09-01 21:32:40
4	Emilie H	0.13 s	F#	2020-09-18 17:26:18
5	Kasper Berthelsen	0.16 s	F#	2022-03-11 16:58:11
6	Natascha Kristensen	0.20 s	F#	2023-09-02 17:11:03
7	Frederik Greve Petersen	0.29 s	F#	2023-09-01 18:36:45

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-04-22 14:06:43
2	Resa Renaldy	0.08 s	Go	2021-07-14 11:45:40
3	Búgvi Benjamin Magnussen	0.08 s	Go	2021-10-18 09:23:12
4	Magix	0.09 s	Go	2020-09-16 08:21:41
5	Krzysztof Gibuła	0.09 s	Go	2020-11-19 17:08:19
6	YiLi Ge	0.77 s	Go	2023-09-07 09:02:58

#	User	Runtime	Language	Date
1	Brent Yorgey	0.01 s	Haskell	2020-08-20 22:19:09
2	Jan Hrček	0.01 s	Haskell	2020-10-27 14:37:13
3	Tim Put	0.01 s	Haskell	2020-10-30 22:34:24
4	Sebastian Banert	0.01 s	Haskell	2024-06-16 14:42:19
5	Caleb Surovik	0.03 s	Haskell	2021-07-02 06:50:39
6	Aaron Lengyel	0.17 s	Haskell	2021-11-22 05:51:57
7	Steinar Simonnes	0.17 s	Haskell	2024-01-30 16:50:29
8	Hidden user	0.18 s	Haskell	2020-11-06 13:21:32
9	Joshua Coward	0.18 s	Haskell	2022-02-03 03:27:27
10	Emil Østergaard	0.21 s	Haskell	2020-09-18 16:46:15

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.05 s	Java	2024-12-01 15:23:05
2	Emil Bak-Møller	0.07 s	Java	2020-09-07 18:21:12
3	Calum Bird	0.07 s	Java	2020-09-30 00:03:51
4	Asmus Tørsleff	0.07 s	Java	2022-03-12 10:47:52
5	Lee Heng Sheng	0.07 s	Java	2024-05-01 09:19:01
6	Crystal Sharpe	0.08 s	Java	2020-08-20 16:08:13
7	Samuel Klingström	0.08 s	Java	2020-09-09 16:47:30
8	Simon Kristiansen	0.08 s	Java	2020-10-01 20:07:06
9	Sven Rönnbäck	0.08 s	Java	2020-12-12 23:01:09
10	Kristoffer Borgstrøm	0.08 s	Java	2022-06-13 16:43:37

#	User	Runtime	Language	Date
1	Yassin Swag	0.07 s	JavaScript (Node.js)	2023-12-10 17:26:22
2	Hidden user	0.08 s	JavaScript (Node.js)	2024-09-13 20:55:56
3	Niamh Limerick	0.45 s	JavaScript (Node.js)	2022-04-12 16:12:00
4	Chris Wong	0.46 s	JavaScript (Node.js)	2021-02-16 01:23:23
5	Jeremy LaGree	0.46 s	JavaScript (Node.js)	2021-03-11 07:23:15
6	Logan Emmert	0.46 s	JavaScript (Node.js)	2021-03-14 21:17:39
7	MaxAbillion	0.46 s	JavaScript (Node.js)	2021-05-13 15:44:05
8	Karim Dridi	0.46 s	JavaScript (Node.js)	2022-01-14 13:51:29
9	Benjamin Robillard	0.46 s	JavaScript (Node.js)	2022-03-28 18:25:50
10	Andoko Chandra	0.47 s	JavaScript (Node.js)	2020-10-11 13:20:24

#	User	Runtime	Language	Date
1	Christian Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-01-13 09:36:58
2	Bjørn Chr. Soltvedt	0.05 s	JavaScript (SpiderMonkey)	2020-08-21 13:51:41
3	Liam Scalzulli	0.05 s	JavaScript (SpiderMonkey)	2020-08-30 02:36:35
4	Peter Menyes	0.05 s	JavaScript (SpiderMonkey)	2021-08-10 17:55:25
5	Zach Tschetter	0.05 s	JavaScript (SpiderMonkey)	2023-06-21 05:43:05
6	Jimmy Gustafsson	0.05 s	JavaScript (SpiderMonkey)	2024-06-17 20:29:38

#	User	Runtime	Language	Date
1	Timothy Gaede	0.56 s	Julia	2024-03-22 02:56:17
2	Danny Robinson	0.80 s	Julia	2023-09-04 18:17:21

#	User	Runtime	Language	Date
1	Martijn Muijsers	0.34 s	Kotlin	2024-05-31 10:50:56
2	Adam Rankin	0.39 s	Kotlin	2023-04-24 05:16:05
3	Ahmed Waseem Saeed	0.40 s	Kotlin	2021-12-18 13:39:57
4	Sergey Jakobsen	0.42 s	Kotlin	2021-03-08 19:49:46
5	Troy Warmboe	0.43 s	Kotlin	2021-10-11 22:15:11
6	Marit van Dijk	0.54 s	Kotlin	2021-09-14 12:37:36

#	User	Runtime	Language	Date
1	Zeheng Li	0.02 s	Lua	2023-12-28 17:37:18

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.01 s	Pascal	2020-08-27 23:02:32
2	David Connolly	0.01 s	Pascal	2022-07-06 21:46:58

#	User	Runtime	Language	Date
1	cojonas1	0.02 s	PHP	2021-03-17 15:32:21
2	Renate	0.02 s	PHP	2021-07-07 03:13:32
3	Erik Boström	0.02 s	PHP	2021-12-27 19:15:53
4	Andre Wahyudi	0.02 s	PHP	2023-03-15 02:30:44

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.13 s	Prolog	2023-02-10 08:01:41
2	Andriy Zyevakov	0.59 s	Prolog	2021-11-29 08:30:05

#	User	Runtime	Language	Date
1	Måns Magnusson	0.04 s	Python 2	2020-07-19 09:21:15
2	Maj Stenmark	0.04 s	Python 2	2020-07-19 21:23:11
3	Ram Basnet	0.04 s	Python 2	2020-09-21 07:21:40
4	Hasan Kalzi	0.04 s	Python 2	2022-06-20 15:03:19
5	Hidden user	0.04 s	Python 2	2022-10-26 12:58:39
6	Yanmarshus Bachtiar	0.05 s	Python 2	2020-08-26 03:10:35
7	Shakeel Samsudeen	0.05 s	Python 2	2020-08-27 01:13:54
8	Johan Lyts	0.05 s	Python 2	2020-08-27 14:14:23
9	Thomas Feld	0.05 s	Python 2	2020-09-09 15:26:19
10	Andreas Björklund	0.05 s	Python 2	2020-09-10 20:13:36

#	User	Runtime	Language	Date
1	João Manoel Feck	0.05 s	Python 3	2024-09-06 20:14:14
2	Jonas Regehr	0.05 s	Python 3	2024-11-22 01:16:40
3	David Aldenbro	0.05 s	Python 3	2025-02-13 12:22:54
4	Hrant Hovhannisyan	0.05 s	Python 3	2025-03-18 10:30:39
5	Petr	0.06 s	Python 3	2022-06-06 17:34:57
6	khazi maahi	0.06 s	Python 3	2022-06-14 17:58:21
7	Hasan Kalzi	0.06 s	Python 3	2022-06-20 15:03:37
8	Kai Yi Lam	0.06 s	Python 3	2022-06-23 13:50:51
9	Rudi Modena	0.06 s	Python 3	2022-06-25 21:53:58
10	Issa Issack	0.06 s	Python 3	2022-06-27 02:58:39

#	User	Runtime	Language	Date
1	Hidden user	0.09 s	Ruby	2020-09-08 21:53:05
2	Eugen Neagoe	0.09 s	Ruby	2023-06-30 16:28:36
3	Thomas Feld	0.09 s	Ruby	2023-09-08 15:20:21
4	Clement Oh	0.11 s	Ruby	2023-10-30 12:24:51

#	User	Runtime	Language	Date
1	Buster Hultgren Wärn	0.67 s	Zig	2024-10-25 12:01:22
2	Mattias Hinnerson	0.67 s	Zig	2024-11-06 08:39:35

#	User	Length	Language	Date
1	Sebastian Banert	353	Ada	2024-09-28 21:46:33

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-06-26 18:24:27
2	Thomas Feld	13	Bash	2023-09-26 20:06:06
3	Danny Robinson	42	Bash	2023-09-04 18:29:17

#	User	Length	Language	Date
1	Martin Blom	88	C	2024-01-08 09:23:52
2	Oliver Ruste Jahren	219	C	2023-06-03 16:13:40
3	Emil Wihlander	236	C	2020-12-05 07:41:40
4	劉睿升	248	C	2021-06-20 14:15:24
5	劉睿升	248	C	2021-06-24 17:28:01
6	Matthew Weston	254	C	2022-01-12 14:38:57
7	Hidden user	259	C	2024-09-24 14:15:29
8	PhilCampbell	261	C	2021-01-07 12:03:12
9	Andrew Roberts	261	C	2021-05-27 23:58:57
10	Rebecca Ekeroth	263	C	2023-10-29 18:45:43

#	User	Length	Language	Date
1	Esty Crow	363	C#	2023-09-16 02:59:43
2	Anthony Ye	388	C#	2023-09-17 17:46:32
3	Göran Andersson	456	C#	2022-05-12 23:28:02
4	Գոռ Բաղդասարյան	461	C#	2025-03-03 09:58:14
5	Benjamin Bilbeau	491	C#	2024-08-20 17:18:10
6	Eric Weiss	512	C#	2022-06-13 23:20:04
7	Thomas Norris	517	C#	2020-11-14 22:04:59
8	Bryce Goddard	521	C#	2020-08-21 21:12:45
9	Yuwono Bangun Nagoro	529	C#	2020-09-04 19:43:18
10	Jesper Lundin	533	C#	2021-09-23 08:54:18

#	User	Length	Language	Date
1	Frans Meulenbroeks	96	C++	2024-12-16 22:56:16
2	Tyler Fernando	113	C++	2022-11-02 09:26:54
3	Will Killian	125	C++	2023-09-13 02:38:46
4	a_b__c	125	C++	2021-08-17 20:27:55
5	WU DI	170	C++	2022-11-24 18:53:46
6	Nguyen Tran Huu Duc	183	C++	2021-11-17 04:40:05
7	Rodrigo Erazo Hermosilla	186	C++	2020-11-17 21:02:24
8	Dau Huy Minh	188	C++	2022-11-16 05:24:59
9	Grae Yeandle	190	C++	2020-08-26 19:27:29
10	Catalin Meleg	193	C++	2024-10-30 12:25:21

#	User	Length	Language	Date
1	Mikael Fangel	175	F#	2023-09-01 21:32:40
2	David Vinje	276	F#	2022-03-21 09:17:51
3	Emilie H	367	F#	2020-09-18 17:26:18
4	Frederik Greve Petersen	374	F#	2023-09-01 18:36:45
5	Jacob Harris Cryer Kragh	550	F#	2022-07-13 22:36:09
6	Natascha Kristensen	918	F#	2023-09-02 17:11:03
7	Kasper Berthelsen	1778	F#	2022-03-11 16:58:11

#	User	Length	Language	Date
1	YiLi Ge	293	Go	2023-09-07 09:02:58
2	Krzysztof Gibuła	428	Go	2020-11-19 17:08:19
3	Resa Renaldy	529	Go	2021-07-14 11:45:40
4	Norbert Voelker	793	Go	2021-04-22 14:06:43
5	Búgvi Benjamin Magnussen	851	Go	2021-10-18 09:23:12
6	Magix	960	Go	2020-09-16 08:21:41

#	User	Length	Language	Date
1	Aaron Lengyel	149	Haskell	2021-11-22 05:51:57
2	Joshua Coward	193	Haskell	2022-02-03 01:12:10
3	Tim Put	196	Haskell	2020-10-30 22:29:29
4	Jan Hrček	245	Haskell	2020-10-27 14:30:58
5	Steinar Simonnes	302	Haskell	2024-01-30 16:50:29
6	Sebastian Banert	304	Haskell	2024-06-16 14:42:19
7	Emil Østergaard	325	Haskell	2020-09-18 16:46:15
8	Carl Westerlund	331	Haskell	2020-09-22 11:14:32
9	Greg Rosser	351	Haskell	2024-02-23 11:03:06
10	Matthew Lutze	379	Haskell	2021-01-02 15:55:54

#	User	Length	Language	Date
1	Evan Magill	199	Java	2023-09-14 16:23:07
2	John Hershey	224	Java	2023-09-23 04:08:50
3	Crystal Yang	332	Java	2023-01-16 22:38:22
4	Schuyler Moelhoff	350	Java	2021-02-19 22:51:14
5	Malte Alexander Koefoed Schalck	360	Java	2022-03-11 17:03:53
6	Carter Henderson	362	Java	2021-10-14 17:23:19
7	Zachary Peterson	365	Java	2020-09-11 23:48:55
8	Kevin Kauffman	365	Java	2021-12-29 02:02:29
9	Tarun Patanjali	366	Java	2023-02-07 18:15:46
10	Christian Nijssen	368	Java	2021-09-05 02:07:37

#	User	Length	Language	Date
1	Karim Dridi	304	JavaScript (Node.js)	2022-01-14 13:56:50
2	Peter Kedemo	332	JavaScript (Node.js)	2020-12-25 23:51:35
3	Hidden user	441	JavaScript (Node.js)	2023-08-23 02:45:21
4	Yassin Swag	453	JavaScript (Node.js)	2023-12-10 17:26:22
5	Chris Wong	507	JavaScript (Node.js)	2021-02-16 01:23:23
6	Howard Tin Chi Chan	517	JavaScript (Node.js)	2021-02-17 07:38:38
7	Keaton Robel	519	JavaScript (Node.js)	2022-04-06 01:26:58
8	pc	652	JavaScript (Node.js)	2021-11-19 09:41:54
9	MaxAbillion	654	JavaScript (Node.js)	2021-05-13 15:44:05
10	Andoko Chandra	722	JavaScript (Node.js)	2020-10-11 13:20:24

#	User	Length	Language	Date
1	Jimmy Gustafsson	79	JavaScript (SpiderMonkey)	2024-06-17 20:29:38
2	Zach Tschetter	144	JavaScript (SpiderMonkey)	2023-06-21 05:43:05
3	Peter Menyes	179	JavaScript (SpiderMonkey)	2021-08-10 17:55:25
4	Liam Scalzulli	185	JavaScript (SpiderMonkey)	2020-08-30 02:36:35
5	Christian Cederquist	189	JavaScript (SpiderMonkey)	2023-01-13 09:36:58
6	Bjørn Chr. Soltvedt	195	JavaScript (SpiderMonkey)	2020-08-21 13:51:41

#	User	Length	Language	Date
1	Danny Robinson	62	Julia	2023-09-04 18:17:21
2	Timothy Gaede	355	Julia	2024-03-22 02:56:17

#	User	Length	Language	Date
1	Sergey Jakobsen	225	Kotlin	2021-03-08 19:53:40
2	Marit van Dijk	372	Kotlin	2021-09-14 12:37:36
3	Ahmed Waseem Saeed	398	Kotlin	2021-12-18 13:39:57
4	Adam Rankin	406	Kotlin	2023-04-24 05:16:05
5	Troy Warmboe	472	Kotlin	2021-10-11 22:15:11
6	Martijn Muijsers	601	Kotlin	2024-05-31 10:50:56

#	User	Length	Language	Date
1	Zeheng Li	138	Lua	2023-12-28 17:37:18

#	User	Length	Language	Date
1	Ingemar Ragnemalm	224	Pascal	2020-08-27 23:02:32
2	David Connolly	292	Pascal	2022-07-06 21:46:58

#	User	Length	Language	Date
1	Renate	269	PHP	2021-07-07 03:13:32
2	Erik Boström	403	PHP	2021-12-27 19:15:53
3	Andre Wahyudi	463	PHP	2023-03-15 02:30:44
4	cojonas1	505	PHP	2021-03-17 15:32:21

#	User	Length	Language	Date
1	Hakan Kjellerstrand	227	Prolog	2023-02-10 08:01:41
2	Andriy Zyevakov	483	Prolog	2021-11-29 08:30:05

#	User	Length	Language	Date
1	Andreas Björklund	120	Python 2	2020-09-10 20:13:36
2	Lars Åström	120	Python 2	2020-11-14 13:51:51
3	Johan Lyts	126	Python 2	2020-08-27 14:17:27
4	Hidden user	128	Python 2	2022-10-26 12:58:39
5	Shakeel Samsudeen	133	Python 2	2020-08-27 01:13:54
6	Nikitha Panda	133	Python 2	2022-03-22 17:03:48
7	Thomas Feld	137	Python 2	2020-09-09 15:26:19
8	Agis Daniels	147	Python 2	2020-11-08 22:35:01
9	Gibransyah	221	Python 2	2022-03-27 11:03:38
10	Yanmarshus Bachtiar	225	Python 2	2020-08-26 03:10:35

#	User	Length	Language	Date
1	Alexandre Charland	71	Python 3	2024-08-24 03:28:19
2	Harry Zhang	72	Python 3	2022-12-19 11:24:12
3	Clement Oh	72	Python 3	2023-06-11 06:30:05
4	Sidharth Pillai	76	Python 3	2023-10-27 14:00:28
5	Timothy Baeckelant	81	Python 3	2023-11-04 15:24:20
6	Henrik Olsen Eide	82	Python 3	2023-09-17 14:38:09
7	Thomas Draper	85	Python 3	2023-06-23 08:16:02
8	Sebastian Boldsen Jakobsen	87	Python 3	2022-10-09 00:53:40
9	Charles Ancheta	89	Python 3	2023-04-07 21:28:19
10	Artur Khuziakhmetov	95	Python 3	2025-01-23 10:23:02

#	User	Length	Language	Date
1	Thomas Feld	34	Ruby	2023-09-08 15:21:51
2	Hidden user	62	Ruby	2020-09-08 21:53:05
3	Clement Oh	72	Ruby	2023-10-30 12:24:51
4	Eugen Neagoe	129	Ruby	2023-06-30 16:29:55

#	User	Length	Language	Date
1	Vincent Lagerros	186	Rust	2025-01-18 19:24:57
2	David Zacek	434	Rust	2021-05-27 22:10:13
3	Valdemar Friis	436	Rust	2023-09-04 16:10:30
4	David Rasch	442	Rust	2021-05-06 10:06:29
5	Bas Dirks	483	Rust	2021-12-31 20:17:59
6	Kok Dith	515	Rust	2021-08-04 13:13:57
7	Pankajkumar Patro	519	Rust	2024-10-03 14:23:36
8	Simon Hallefält	524	Rust	2023-07-22 14:57:51
9	Nikoline Olander Rasmussen	527	Rust	2023-09-06 18:21:18
10	Hidden user	539	Rust	2021-02-25 14:12:05

#	User	Length	Language	Date
1	Buster Hultgren Wärn	1919	Zig	2024-10-25 12:07:05
2	Mattias Hinnerson	1945	Zig	2024-11-06 08:39:35

Solution running time distribution