Problem I
Goomba Stacks — Problem Statistics

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Submissions	2130
Accepted submissions	1142
Submission ratio	53.62%
Authors	1020
Accepted authors	960
Author ratio	94.12%

#	User	Runtime	Language	Date
1	Thomas Feld	0.03 s	Bash	2023-09-07 13:40:30
2	Danny Robinson	0.04 s	Bash	2023-09-05 18:10:07
3	Chenzhang Hu	0.17 s	Bash	2023-10-02 15:45:58

#	User	Runtime	Language	Date
1	Eyleifur Bjarkason	0.00 s	C	2023-09-13 16:21:43
2	Agis Daniels	0.00 s	C	2023-09-13 18:00:05
3	Bergur Snorrason	0.00 s	C	2024-01-16 10:36:09
4	Hidden user	0.00 s	C	2025-06-12 00:21:10
5	Allan Nouri	0.01 s	C	2023-10-06 14:17:00
6	Luis Adrián Hernández Cordero	0.02 s	C	2023-05-21 21:13:31
7	Yahir Balderas	0.02 s	C	2023-05-21 21:29:05
8	Armando Perales Cruz	0.02 s	C	2023-05-21 21:48:47
9	紅茶	0.02 s	C	2023-09-05 04:43:32
10	Martin Blom	0.02 s	C	2023-09-19 12:59:14

#	User	Runtime	Language	Date
1	Bertram Agerholm	0.06 s	C#	2023-09-08 11:36:30
2	Mads Dehlsen	0.06 s	C#	2023-09-08 11:38:23
3	Benjamin Bilbeau	0.06 s	C#	2023-09-15 21:43:20
4	Farzam Abrishami	0.06 s	C#	2023-09-23 22:50:19
5	Ricardo H Guerrero Lara	0.06 s	C#	2023-09-25 15:59:37
6	Gregory Sinclair	0.06 s	C#	2023-11-05 16:34:37
7	Steve Williams	0.06 s	C#	2023-11-27 23:11:00
8	Jack Cannell	0.06 s	C#	2023-12-02 20:33:25
9	Chen Lili	0.06 s	C#	2023-12-02 20:43:37
10	Hidden user	0.06 s	C#	2024-01-25 15:13:57

#	User	Runtime	Language	Date
1	Agis Daniels	0.00 s	C++	2023-09-13 17:59:42
2	Alexander Kravberg	0.00 s	C++	2023-09-23 00:26:06
3	Jonathan Hallström	0.00 s	C++	2024-02-05 18:07:48
4	Lee Heng Sheng	0.00 s	C++	2024-05-26 09:08:58
5	Hidden user	0.01 s	C++	2023-05-21 20:43:05
6	Anay Aggarwal	0.01 s	C++	2023-05-21 20:58:10
7	Maxwell Penders	0.01 s	C++	2024-02-05 17:50:22
8	Daniel González Arbelo	0.01 s	C++	2024-10-03 16:44:46
9	Jeff Cheng	0.02 s	C++	2023-05-21 20:32:40
10	Jerry Xiao	0.02 s	C++	2023-05-21 20:40:29

#	User	Runtime	Language	Date
1	yraten	0.16 s	Common Lisp	2024-04-22 22:46:36

#	User	Runtime	Language	Date
1	Norbert Voelker	0.01 s	Go	2023-09-10 23:26:17
2	Christopher Will	0.03 s	Go	2024-01-23 16:20:41
3	Jimmy Nejtron	0.13 s	Go	2023-09-08 10:39:15

#	User	Runtime	Language	Date
1	Øyvind Almli	0.01 s	Haskell	2023-09-08 22:43:20
2	Ng Tek In	0.02 s	Haskell	2023-09-11 17:58:06
3	Brent Yorgey	0.03 s	Haskell	2023-09-14 03:19:42
4	Jan Hrček	0.27 s	Haskell	2024-12-06 11:29:40
5	Ramesh baskaran	0.30 s	Haskell	2024-10-16 04:40:17
6	Charley Sheaffer	0.34 s	Haskell	2023-10-27 15:42:39
7	Henrik Olsen Eide	0.36 s	Haskell	2023-09-29 10:13:20
8	Rudy Matela	0.36 s	Haskell	2024-03-19 10:47:04
9	Daniel Cabral	0.36 s	Haskell	2024-07-22 11:34:59
10	Sebastian Banert	0.37 s	Haskell	2023-09-06 19:16:31

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.07 s	Java	2023-09-05 18:32:05
2	Lee Heng Sheng	0.07 s	Java	2024-04-14 08:34:33
3	Gabriel Gómez Calderón	0.21 s	Java	2024-07-05 22:57:49
4	Ku Brian	0.22 s	Java	2024-04-29 09:00:01
5	Julius Griebel	0.24 s	Java	2023-11-16 15:21:00
6	Koo Zhuo Hui	0.24 s	Java	2024-01-01 07:48:09
7	Todd W. Neller	0.24 s	Java	2025-04-07 22:58:24
8	Ranjith M	0.25 s	Java	2023-12-19 16:41:52
9	Goh Zhixuan Jeremiah	0.29 s	Java	2025-02-10 08:06:48
10	Issa Issack	0.30 s	Java	2023-09-09 19:32:12

#	User	Runtime	Language	Date
1	Faisal Rahman	0.17 s	JavaScript (Node.js)	2024-02-14 23:50:02
2	Hidden user	0.20 s	JavaScript (Node.js)	2023-09-12 05:59:16

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.07 s	JavaScript (SpiderMonkey)	2023-09-05 19:39:27
2	Tony Valleii	0.07 s	JavaScript (SpiderMonkey)	2024-09-17 22:51:07
3	Jimmy Gustafsson	0.08 s	JavaScript (SpiderMonkey)	2024-06-10 14:32:05
4	Christian Cederquist	0.09 s	JavaScript (SpiderMonkey)	2023-09-09 22:24:40
5	Zach Tschetter	0.09 s	JavaScript (SpiderMonkey)	2023-09-10 04:06:43
6	Nathan Noll	0.09 s	JavaScript (SpiderMonkey)	2024-01-22 15:23:54
7	Evan Magill	0.09 s	JavaScript (SpiderMonkey)	2024-04-08 04:19:33

#	User	Runtime	Language	Date
1	Timothy Gaede	0.52 s	Julia	2024-03-19 02:07:00
2	Danny Robinson	0.75 s	Julia	2023-09-05 18:09:36

#	User	Runtime	Language	Date
1	Martijn Muijsers	0.43 s	Kotlin	2024-05-28 10:29:41
2	Troy Warmboe	0.44 s	Kotlin	2023-12-21 20:58:27
3	Adam Rankin	0.45 s	Kotlin	2023-09-13 05:23:38
4	Emil Wihlander	0.45 s	Kotlin	2024-07-16 17:00:57
5	jonas lølanl	0.53 s	Kotlin	2025-01-22 21:00:32
6	Ola Sundell	0.98 s	Kotlin	2023-09-08 07:49:42

#	User	Runtime	Language	Date
1	Matthew Farshad	0.03 s	Lua	2025-02-19 21:17:15

#	User	Runtime	Language	Date
1	Fredrik Eriksson	0.03 s	OCaml	2024-11-03 00:11:34
2	Hidden user	0.04 s	OCaml	2024-10-08 00:47:02

#	User	Runtime	Language	Date
1	Hidden user	0.09 s	Odin	2025-05-20 05:21:28

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.02 s	Pascal	2023-10-08 12:25:18
2	David Connolly	0.02 s	Pascal	2024-02-12 14:47:37

#	User	Runtime	Language	Date
1	Saito Ta	0.05 s	Perl	2024-04-08 09:49:52

#	User	Runtime	Language	Date
1	Renate	0.04 s	PHP	2023-10-14 12:59:28

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.29 s	Prolog	2024-01-07 13:10:07

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.07 s	Python 2	2023-09-21 16:02:05
2	Johan Lyts	0.08 s	Python 2	2023-09-19 20:13:15

#	User	Runtime	Language	Date
1	Petr	0.06 s	Python 3	2024-10-07 17:34:23
2	Dominic Berzin Chua Way Gin	0.06 s	Python 3	2025-03-15 15:59:55
3	Zhe Ning Chin	0.07 s	Python 3	2023-09-08 16:06:19
4	J. Kristoffer Holmén	0.07 s	Python 3	2024-03-02 18:48:00
5	Mike Herms	0.07 s	Python 3	2024-10-16 19:56:42
6	Glenn Jordan van den Bosch	0.07 s	Python 3	2025-01-01 21:24:32
7	Albert Pala	0.08 s	Python 3	2023-09-05 10:37:50
8	Nicholas Russell Saerang	0.08 s	Python 3	2023-09-05 12:00:29
9	Ram Basnet	0.08 s	Python 3	2023-09-10 18:56:40
10	Rasmus Larsen	0.08 s	Python 3	2023-09-14 18:10:01

#	User	Runtime	Language	Date
1	Thomas Feld	0.13 s	Ruby	2023-09-07 13:47:53
2	Frederik Petersen	0.14 s	Ruby	2024-04-09 14:11:04
3	Alexander Bilde Pedersen	0.16 s	Ruby	2023-09-10 01:18:12
4	Robert Haines	0.16 s	Ruby	2024-04-12 22:11:13
5	Miorel Palii	0.17 s	Ruby	2024-11-24 00:25:20

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-12-23 17:46:56
2	Frank Endriss	0.01 s	Rust	2023-09-08 19:21:26
3	Selim Yetkin	0.01 s	Rust	2023-09-10 21:45:10
4	Hovig Manjikian	0.01 s	Rust	2023-10-01 00:32:43
5	Bas Dirks	0.01 s	Rust	2023-12-24 20:07:22
6	Aza Maulana Hadi	0.01 s	Rust	2024-03-12 22:32:43
7	David Rasch	0.02 s	Rust	2023-09-07 16:18:54
8	David Vinje	0.02 s	Rust	2023-09-13 11:27:58
9	Isak Jägberg	0.02 s	Rust	2023-09-26 12:46:20
10	Joachim Horshauge	0.02 s	Rust	2024-01-25 01:56:07

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-06-01 18:07:37
2	Thomas Feld	14	Bash	2023-10-02 15:10:40
3	Danny Robinson	50	Bash	2023-09-05 18:10:07

#	User	Length	Language	Date
1	Carl Pittenger	114	C	2024-04-09 05:52:36
2	Martin Blom	116	C	2023-09-19 13:01:07
3	Bergur Snorrason	243	C	2024-01-16 10:34:15
4	Hidden user	279	C	2024-03-13 05:12:02
5	Hidden user	301	C	2024-12-12 08:01:52
6	Hidden user	304	C	2024-10-17 10:31:35
7	Birger Lundin	306	C	2024-12-19 11:58:12
8	Allan Nouri	318	C	2023-10-06 14:17:00
9	Roemer Caliboso	325	C	2024-09-06 16:12:49
10	Malin Grevillius	328	C	2024-12-31 13:40:02

#	User	Length	Language	Date
1	Gregory Sinclair	188	C#	2023-11-05 16:34:37
2	traxex	334	C#	2024-04-19 15:28:05
3	Esty Crow	489	C#	2024-09-06 12:21:13
4	Anthony Ye	510	C#	2024-09-06 18:58:20
5	clarence chen	510	C#	2024-09-12 18:59:24
6	Ricardo H Guerrero Lara	528	C#	2023-09-25 15:59:37
7	Jack Cannell	575	C#	2023-12-02 20:33:25
8	Jan Matthiessen	617	C#	2024-03-30 23:08:13
9	Ahmet Murat Gençay	642	C#	2023-09-06 23:08:14
10	Benjamin Bilbeau	658	C#	2023-09-15 21:43:20

#	User	Length	Language	Date
1	Dau Huy Minh	205	C++	2023-09-20 06:26:28
2	KRIS NATALIS	216	C++	2024-02-09 04:59:12
3	Grae Yeandle	218	C++	2023-09-06 17:40:05
4	Adrien	229	C++	2024-03-17 13:54:45
5	Abdullah AL Noman Thasin	235	C++	2024-02-22 00:00:13
6	Alex Rudzenis	237	C++	2024-01-20 19:23:20
7	程睿	248	C++	2024-11-20 03:39:39
8	Frans Meulenbroeks	256	C++	2024-08-23 18:35:40
9	Alex Rudzenis	262	C++	2023-05-21 22:35:21
10	Evan Michael Bailey	266	C++	2024-02-13 01:22:22

#	User	Length	Language	Date
1	yraten	260	Common Lisp	2024-04-22 22:46:36

#	User	Length	Language	Date
1	Norbert Voelker	377	Go	2023-09-10 23:26:17
2	Jimmy Nejtron	553	Go	2023-09-08 10:39:15
3	Christopher Will	1031	Go	2024-01-23 16:20:41

#	User	Length	Language	Date
1	Jan Hrček	96	Haskell	2024-12-06 11:29:40
2	Rudy Matela	97	Haskell	2024-03-19 10:58:10
3	Ramesh baskaran	243	Haskell	2024-10-16 04:40:17
4	Sebastian Banert	246	Haskell	2023-09-06 19:16:31
5	Henrik Olsen Eide	259	Haskell	2023-09-29 10:13:20
6	Hidden user	264	Haskell	2023-09-05 14:51:25
7	Daniel Cabral	270	Haskell	2024-07-22 11:34:59
8	Steinar Simonnes	312	Haskell	2024-01-09 16:35:14
9	Elizabeth Doughty	332	Haskell	2024-02-05 10:23:11
10	Charley Sheaffer	360	Haskell	2023-10-27 15:42:39

#	User	Length	Language	Date
1	Raymond Arrington	382	Java	2024-06-08 05:45:10
2	Jason Liu	400	Java	2023-09-07 15:50:13
3	Emily	409	Java	2025-05-09 14:11:19
4	Isabella Sbarra	424	Java	2025-05-09 14:32:55
5	Cambrien Malenko	427	Java	2024-03-07 00:15:13
6	Diego Tabares	427	Java	2025-05-15 03:32:23
7	Nathaniel Lukas Christianto	429	Java	2023-12-26 13:55:03
8	Joseph Sackitey	436	Java	2025-04-14 21:39:49
9	Leslie Yip	441	Java	2023-09-25 09:20:28
10	Terry Morris	447	Java	2024-06-18 06:14:45

#	User	Length	Language	Date
1	Hidden user	555	JavaScript (Node.js)	2023-09-12 05:59:16
2	Faisal Rahman	642	JavaScript (Node.js)	2024-02-14 23:47:39

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	114	JavaScript (SpiderMonkey)	2023-09-05 19:47:39
2	Jimmy Gustafsson	121	JavaScript (SpiderMonkey)	2024-06-10 14:32:05
3	Evan Magill	203	JavaScript (SpiderMonkey)	2024-04-08 04:19:33
4	Tony Valleii	235	JavaScript (SpiderMonkey)	2024-09-17 22:51:07
5	Zach Tschetter	253	JavaScript (SpiderMonkey)	2023-09-10 04:06:43
6	Christian Cederquist	275	JavaScript (SpiderMonkey)	2023-09-09 22:24:40
7	Nathan Noll	289	JavaScript (SpiderMonkey)	2024-01-22 15:23:54

#	User	Length	Language	Date
1	Danny Robinson	107	Julia	2023-09-05 18:09:36
2	Timothy Gaede	474	Julia	2024-03-19 02:07:00

#	User	Length	Language	Date
1	Emil Wihlander	340	Kotlin	2024-07-16 17:00:57
2	jonas lølanl	344	Kotlin	2025-01-22 21:00:32
3	Adam Rankin	372	Kotlin	2023-09-13 05:23:38
4	Ola Sundell	659	Kotlin	2023-09-08 07:49:42
5	Martijn Muijsers	679	Kotlin	2024-05-28 10:29:41
6	Troy Warmboe	885	Kotlin	2023-12-21 20:58:27

#	User	Length	Language	Date
1	Matthew Farshad	241	Lua	2025-02-19 21:17:15

#	User	Length	Language	Date
1	Fredrik Eriksson	316	OCaml	2024-11-03 00:11:34
2	Hidden user	546	OCaml	2024-10-08 00:47:02

#	User	Length	Language	Date
1	Hidden user	589	Odin	2025-05-20 05:21:28

#	User	Length	Language	Date
1	Ingemar Ragnemalm	236	Pascal	2023-10-08 12:25:18
2	David Connolly	495	Pascal	2024-02-12 14:47:37

#	User	Length	Language	Date
1	Saito Ta	113	Perl	2024-04-08 09:49:52

#	User	Length	Language	Date
1	Renate	246	PHP	2023-10-14 12:59:28

#	User	Length	Language	Date
1	Andriy Zyevakov	433	Prolog	2024-01-07 13:10:07

#	User	Length	Language	Date
1	Johan Lyts	155	Python 2	2023-09-19 20:13:15
2	Yanmarshus Bachtiar	203	Python 2	2023-09-21 16:02:05

#	User	Length	Language	Date
1	Kevin Gomez	89	Python 3	2024-03-24 01:22:23
2	Shashank Bhatt	100	Python 3	2023-10-29 08:17:47
3	Carl Pittenger	110	Python 3	2024-04-09 06:02:28
4	Tobias Glimmerfors	110	Python 3	2023-09-16 21:14:55
5	Peter Stauder	116	Python 3	2024-01-23 21:42:01
6	Christofer Ohlsson	123	Python 3	2023-09-06 07:49:52
7	Ahmed Chamseddine	127	Python 3	2024-06-12 13:06:18
8	Farzam Abrishami	129	Python 3	2023-09-23 22:36:35
9	Hidden user	134	Python 3	2023-09-08 14:30:11
10	Jonathan de Koning	134	Python 3	2024-02-22 23:53:40

#	User	Length	Language	Date
1	Thomas Feld	66	Ruby	2023-09-07 13:47:53
2	Frederik Petersen	92	Ruby	2024-04-09 14:11:04
3	Miorel Palii	140	Ruby	2024-11-24 00:25:20
4	Alexander Bilde Pedersen	153	Ruby	2023-09-10 01:18:12
5	Robert Haines	268	Ruby	2024-04-12 22:11:13

#	User	Length	Language	Date
1	David Rasch	365	Rust	2023-09-07 16:22:02
2	Vincent Lagerros	392	Rust	2024-12-23 17:42:04
3	Bas Dirks	504	Rust	2023-12-24 20:07:22
4	Aza Maulana Hadi	508	Rust	2024-03-12 22:19:05
5	Joachim Horshauge	533	Rust	2024-01-25 01:56:07
6	Isak Jägberg	578	Rust	2023-09-26 12:46:20
7	David Vinje	582	Rust	2023-09-13 11:27:58
8	Pankajkumar Patro	684	Rust	2024-08-08 15:07:01
9	Sebastian Widmann	729	Rust	2024-02-03 14:58:36
10	Hovig Manjikian	730	Rust	2023-10-01 00:32:43

Solution running time distribution