Problem A
A Terrible Fortress — Problem Statistics

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Submissions	2641
Accepted submissions	1508
Submission ratio	57.10%
Authors	1437
Full solves [?]	1400
Full solve Ratio	97.43%

#	User	Runtime	Language	Date
1	Matzuka	0.12 s	APL	2025-04-27 10:18:58
2	Arvid Jonasson	0.12 s	APL	2025-06-11 00:19:07

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2025-04-25 03:51:06
2	Frans Meulenbroeks	0.01 s	Bash	2025-05-06 21:45:37
3	Chenzhang Hu	0.01 s	Bash	2025-09-12 15:12:11
4	Theodore Chrysafis	0.02 s	Bash	2025-08-10 21:11:47
5	Radu Rau	0.02 s	Bash	2025-10-10 14:41:14

#	User	Runtime	Language	Date
1	Nicholas Hood	0.04 s	C#	2025-04-30 02:23:18
2	Mark Meysenburg	0.04 s	C#	2025-05-09 17:31:59
3	Anna Eklund	0.04 s	C#	2025-05-11 22:16:30
4	Nicolas Tabora	0.04 s	C#	2025-05-12 19:30:04
5	Leonardo Andrade	0.04 s	C#	2025-05-22 16:03:07
6	Matias Córdova	0.04 s	C#	2025-05-28 00:16:53
7	Julio Cesar	0.04 s	C#	2025-05-29 05:07:43
8	Alexis Olivia Haiar	0.04 s	C#	2025-06-10 17:22:46
9	Emmanuel Gorostiaga	0.04 s	C#	2025-06-20 00:34:07
10	Maureen De la fuente	0.04 s	C#	2025-07-03 01:57:47

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2025-07-08 14:13:06
2	J Sotomayor	0.01 s	Common Lisp	2025-09-04 01:35:06
3	yraten	0.04 s	Common Lisp	2025-04-28 14:22:24

#	User	Runtime	Language	Date
1	Magnus Baasch Langkilde	0.35 s	Erlang	2025-07-05 10:19:31

#	User	Runtime	Language	Date
1	Rasmus Bondo Hansen	0.08 s	F#	2025-06-19 18:40:27

#	User	Runtime	Language	Date
1	Angus Gibson	0.00 s	Forth	2025-07-14 06:49:35

#	User	Runtime	Language	Date
1	James Church	0.00 s	Fortran	2025-09-12 18:14:40

#	User	Runtime	Language	Date
1	Norbert Voelker	0.00 s	Go	2025-05-17 19:56:07
2	Bogdan Matei	0.00 s	Go	2025-10-10 13:18:40
3	Jimmy Nejtron	0.01 s	Go	2025-07-04 15:49:10
4	JustForTest	0.01 s	Go	2025-09-08 07:41:19
5	Hidden user	0.01 s	Go	2025-10-10 15:47:10

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2025-04-25 14:38:00
2	Hidden user	0.01 s	Haskell	2025-04-24 09:56:20
3	Brent Yorgey	0.01 s	Haskell	2025-04-25 23:42:09
4	Timur Khazhiev	0.01 s	Haskell	2025-04-29 12:28:45
5	Adam Yaser Sweilem	0.01 s	Haskell	2025-05-02 18:37:42
6	Herdi Saleh	0.01 s	Haskell	2025-05-02 22:22:57
7	Daniel Cabral	0.01 s	Haskell	2025-06-23 22:22:50
8	Juan Miguel Vilar	0.01 s	Haskell	2025-08-18 20:10:33
9	Brian Hwang	0.01 s	Haskell	2025-09-12 21:41:42
10	Pathompong Kwangtong	0.01 s	Haskell	2025-09-28 17:56:32

#	User	Runtime	Language	Date
1	Mark Meysenburg	0.04 s	Java	2025-05-09 17:25:28
2	Guangyi Zhou	0.04 s	Java	2025-05-11 03:06:49
3	Kshitij Agarwal	0.04 s	Java	2025-05-12 01:19:13
4	Markus Bao	0.04 s	Java	2025-05-31 23:00:57
5	Stela Palii	0.04 s	Java	2025-06-16 03:58:52
6	Joshua Chin	0.04 s	Java	2025-08-21 02:03:26
7	Tobias Holm	0.05 s	Java	2025-05-02 18:32:35
8	Julius Griebel	0.05 s	Java	2025-06-14 15:09:50
9	Markus	0.05 s	Java	2025-10-17 22:36:22
10	Einar Þór Ívarsson	0.11 s	Java	2025-08-20 17:55:29

#	User	Runtime	Language	Date
1	Erlend Raa Vågset	0.04 s	JavaScript (Node.js)	2025-09-30 14:54:39
2	Aji Sulistyo Nugroho	0.05 s	JavaScript (Node.js)	2025-05-07 08:45:28
3	Juho Uutela	0.05 s	JavaScript (Node.js)	2025-10-10 13:24:27

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2025-04-24 18:01:35
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2025-04-30 07:01:41
3	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2025-05-13 22:31:52
4	Ben Armstrong	0.02 s	JavaScript (SpiderMonkey)	2025-06-25 17:08:24

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2025-04-24 04:12:48

#	User	Runtime	Language	Date
1	Hamdanil Rasyid	0.21 s	Kotlin	2025-05-03 16:57:23
2	Nils sxm	0.21 s	Kotlin	2025-09-11 14:47:26
3	yanis ee	0.21 s	Kotlin	2025-09-12 16:52:10
4	Play Aimcester	0.22 s	Kotlin	2025-09-22 18:21:35
5	Gonçalo Vale	0.22 s	Kotlin	2025-10-10 16:13:31

#	User	Runtime	Language	Date
1	Shinji Koshida	0.00 s	Lua	2025-04-30 20:35:46
2	Hidden user	0.00 s	Lua	2025-05-12 20:10:58
3	Jack Anderson	0.00 s	Lua	2025-09-15 04:41:53
4	Trevor	0.00 s	Lua	2025-10-06 01:56:08

#	User	Runtime	Language	Date
1	Nino Bašić	0.00 s	Nim	2025-05-31 16:14:06
2	Hidden user	0.00 s	Nim	2025-09-26 19:47:18

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	OCaml	2025-07-15 20:03:50

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.13 s	Octave	2025-04-24 17:03:28

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-04-27 05:22:55

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2025-05-18 19:52:33
2	Lucka Heric	0.00 s	Pascal	2025-08-05 11:14:04

#	User	Runtime	Language	Date
1	Edwin Santiago Amezquita Saganome	0.08 s	Python 2	2025-04-27 18:28:57
2	Yesica Causado Alvarado	0.08 s	Python 2	2025-05-31 06:02:59
3	Gerald Teo	0.08 s	Python 2	2025-07-02 16:58:34

#	User	Runtime	Language	Date
1	Oliver Kotter	0.04 s	Python 3	2025-04-22 18:50:22
2	Aaron Ochakovsky	0.04 s	Python 3	2025-04-22 19:43:10
3	Nicholas Russell Saerang	0.04 s	Python 3	2025-04-24 02:52:37
4	Ilie	0.04 s	Python 3	2025-04-24 04:55:20
5	Simen Sørensen	0.04 s	Python 3	2025-04-25 01:06:16
6	Rebecca Jackson	0.04 s	Python 3	2025-04-25 19:36:35
7	Sander Oppen	0.04 s	Python 3	2025-04-25 21:54:38
8	Ole Vik Lysne	0.04 s	Python 3	2025-04-26 00:04:10
9	Guotao Ma	0.04 s	Python 3	2025-04-27 01:18:26
10	Farzam Abrishami	0.04 s	Python 3	2025-04-27 02:35:46

#	User	Runtime	Language	Date
1	Russell Ng	0.06 s	Ruby	2025-05-12 14:34:00
2	Miorel Palii	0.06 s	Ruby	2025-06-28 16:11:34
3	John Ray Clementz A. Servo	0.06 s	Ruby	2025-08-06 12:09:31
4	Þorsteinn Sævar Kristjánsson	0.06 s	Ruby	2025-10-01 18:42:18
5	Thomas Feld	0.07 s	Ruby	2025-06-25 14:58:09
6	Hidden user	0.07 s	Ruby	2025-09-22 03:11:53
7	Mads Larsen	0.07 s	Ruby	2025-10-10 20:04:41

#	User	Runtime	Language	Date
1	AZm87	0.00 s	Swift	2025-07-03 00:10:55

#	User	Runtime	Language	Date
1	Rebecka Nordqvist	0.04 s	TypeScript	2025-07-15 12:37:00
2	Hidden user	0.04 s	TypeScript	2025-10-10 13:41:08
3	Bogdan Dimoiu	0.05 s	TypeScript	2025-10-10 14:58:39
4	Dimitrios Mageiras	0.05 s	TypeScript	2025-10-10 15:24:23

#	User	Runtime	Language	Date
1	Grettir Heimisson	0.00 s	Zig	2025-10-20 23:31:03

#	User	Length	Language	Date
1	Arvid Jonasson	21	APL	2025-06-11 00:19:07
2	Matzuka	35	APL	2025-04-27 10:18:58

#	User	Length	Language	Date
1	Chenzhang Hu	22	Bash	2025-09-12 15:12:11
2	Danny Robinson	29	Bash	2025-04-25 03:51:06
3	Frans Meulenbroeks	54	Bash	2025-05-06 21:45:37
4	Theodore Chrysafis	202	Bash	2025-08-10 21:11:47
5	Radu Rau	236	Bash	2025-10-10 14:41:14

#	User	Length	Language	Date
1	Jonatan Altebro	108	C	2025-04-28 11:08:44
2	HARIPRASATH S	152	C	2025-05-05 16:02:22
3	Finn Uddling	153	C	2025-09-20 14:28:13
4	MYLAMBIGAI G	160	C	2025-04-30 06:27:35
5	MartÍn Tena Fernández	163	C	2025-09-22 10:54:44
6	Kavya S	164	C	2025-06-17 08:03:04
7	Mason Anderson	167	C	2025-05-20 22:01:29
8	Shivasurya K A	168	C	2025-06-13 04:34:32
9	KEERTHIRAJ G	169	C	2025-05-09 16:06:16
10	Hidden user	170	C	2025-04-30 11:41:09

#	User	Length	Language	Date
1	Manjit Sithuraj	166	C#	2025-10-10 06:48:16
2	Deci Bel	168	C#	2025-04-25 14:43:43
3	Mark Meysenburg	183	C#	2025-05-09 17:31:59
4	Hidden user	194	C#	2025-10-03 18:00:35
5	Hidden user	202	C#	2025-09-22 03:04:59
6	Jan Matthiessen	211	C#	2025-05-29 19:14:49
7	Hidden user	273	C#	2025-08-06 16:25:11
8	Alexis Olivia Haiar	292	C#	2025-06-10 17:22:46
9	Erik Algesten	305	C#	2025-06-22 21:38:55
10	Nicolas Tabora	320	C#	2025-05-12 19:30:04

#	User	Length	Language	Date
1	Sarji Elijah See Bona	128	C++	2025-05-01 09:57:57
2	Evan Michael Bailey	142	C++	2025-06-06 06:10:42
3	Malte Nilsson	151	C++	2025-05-03 15:29:24
4	Le Hoang Vu	151	C++	2025-09-23 17:45:01
5	Jesús Pacheco Alonso	152	C++	2025-04-25 23:55:45
6	Gustav Godsk	153	C++	2025-09-11 08:36:15
7	Ernest Ng Zi Xuan	158	C++	2025-04-25 05:08:15
8	Hidden user	161	C++	2025-08-18 19:00:24
9	Jasmine	163	C++	2025-05-27 21:38:37
10	Kerk Tai Heng	165	C++	2025-05-26 09:27:39

#	User	Length	Language	Date
1	J Sotomayor	58	Common Lisp	2025-09-04 01:36:26
2	Hidden user	61	Common Lisp	2025-07-08 14:13:06
3	yraten	120	Common Lisp	2025-04-28 14:22:24

#	User	Length	Language	Date
1	Magnus Baasch Langkilde	355	Erlang	2025-07-05 10:19:31

#	User	Length	Language	Date
1	Rasmus Bondo Hansen	174	F#	2025-06-19 18:40:27

#	User	Length	Language	Date
1	Angus Gibson	173	Forth	2025-07-14 06:49:35

#	User	Length	Language	Date
1	James Church	208	Fortran	2025-09-12 18:14:40

#	User	Length	Language	Date
1	Hidden user	161	Go	2025-10-10 15:47:10
2	Jimmy Nejtron	173	Go	2025-07-04 15:49:10
3	JustForTest	330	Go	2025-09-08 07:41:19
4	Norbert Voelker	349	Go	2025-05-17 19:56:07
5	Bogdan Matei	539	Go	2025-10-10 13:18:40

#	User	Length	Language	Date
1	Juan Miguel Vilar	42	Haskell	2025-08-18 20:10:33
2	Herdi Saleh	43	Haskell	2025-05-02 22:22:57
3	Timur Khazhiev	105	Haskell	2025-04-29 12:28:45
4	Adam Yaser Sweilem	105	Haskell	2025-05-02 18:37:42
5	Daniel Cabral	109	Haskell	2025-06-23 22:22:50
6	Pathompong Kwangtong	114	Haskell	2025-09-28 17:56:32
7	Hidden user	140	Haskell	2025-04-24 09:56:20
8	Brian Hwang	161	Haskell	2025-09-12 21:41:42
9	Brent Yorgey	186	Haskell	2025-04-25 23:42:09
10	Steinar Simonnes	370	Haskell	2025-04-25 14:38:00

#	User	Length	Language	Date
1	David Paul	252	Java	2025-08-28 20:03:06
2	Lawry Sorenson	265	Java	2025-04-24 02:06:03
3	Marshall Vaught	265	Java	2025-06-03 22:26:58
4	PAVISH V	273	Java	2025-05-06 02:51:44
5	Lane Braus	291	Java	2025-05-01 05:59:23
6	wyatt wilson	292	Java	2025-05-27 22:29:49
7	HARINI R	293	Java	2025-04-27 15:02:34
8	Hidden user	294	Java	2025-04-27 18:45:16
9	Hidden user	295	Java	2025-04-26 13:13:10
10	Hidden user	301	Java	2025-08-21 10:59:49

#	User	Length	Language	Date
1	Erlend Raa Vågset	162	JavaScript (Node.js)	2025-09-30 14:54:39
2	Aji Sulistyo Nugroho	462	JavaScript (Node.js)	2025-05-07 08:45:28
3	Juho Uutela	1239	JavaScript (Node.js)	2025-10-10 13:24:27

#	User	Length	Language	Date
1	Jimmy Gustafsson	49	JavaScript (SpiderMonkey)	2025-05-13 22:31:52
2	Bjørn Chr. Soltvedt	57	JavaScript (SpiderMonkey)	2025-04-24 18:03:03
3	Christian Pilegaard Cederquist	83	JavaScript (SpiderMonkey)	2025-04-30 07:01:41
4	Ben Armstrong	106	JavaScript (SpiderMonkey)	2025-06-25 17:08:24

#	User	Length	Language	Date
1	Timothy Gaede	182	Julia	2025-04-24 04:12:48

#	User	Length	Language	Date
1	Hamdanil Rasyid	121	Kotlin	2025-05-03 16:57:23
2	yanis ee	162	Kotlin	2025-09-12 16:52:10
3	Play Aimcester	198	Kotlin	2025-09-22 18:21:35
4	Nils sxm	215	Kotlin	2025-09-11 14:47:26
5	Gonçalo Vale	484	Kotlin	2025-10-10 16:13:31

#	User	Length	Language	Date
1	Hidden user	94	Lua	2025-05-12 20:10:58
2	Jack Anderson	104	Lua	2025-09-15 04:41:53
3	Shinji Koshida	119	Lua	2025-04-30 20:35:46
4	Trevor	253	Lua	2025-10-06 01:56:08

#	User	Length	Language	Date
1	Hidden user	139	Nim	2025-09-26 19:47:18
2	Nino Bašić	150	Nim	2025-05-31 16:14:06

#	User	Length	Language	Date
1	Hidden user	169	OCaml	2025-07-15 20:03:50

#	User	Length	Language	Date
1	Sven Rönnbäck	242	Octave	2025-04-24 17:03:28

#	User	Length	Language	Date
1	Hidden user	280	Odin	2025-04-27 05:22:55

#	User	Length	Language	Date
1	Ingemar Ragnemalm	192	Pascal	2025-05-18 19:52:33
2	Lucka Heric	204	Pascal	2025-08-05 11:14:04

#	User	Length	Language	Date
1	Yesica Causado Alvarado	96	Python 2	2025-05-31 06:02:59
2	Edwin Santiago Amezquita Saganome	205	Python 2	2025-04-27 18:28:57
3	Gerald Teo	255	Python 2	2025-07-02 16:58:34

#	User	Length	Language	Date
1	Nicholas Russell Saerang	35	Python 3	2025-04-24 02:52:37
2	Sander Oppen	35	Python 3	2025-04-25 21:54:38
3	Farzam Abrishami	35	Python 3	2025-04-27 02:36:16
4	Guk Yi Siong	35	Python 3	2025-04-27 10:49:15
5	Noah Hessen Bjerke	35	Python 3	2025-04-27 12:24:56
6	Kevin Gomez	35	Python 3	2025-05-17 05:50:53
7	Alexandre Douard	35	Python 3	2025-07-13 20:14:39
8	Elias Lundell	35	Python 3	2025-07-17 23:54:56
9	Thibault Raffaillac	35	Python 3	2025-08-12 13:39:04
10	June Hoop	35	Python 3	2025-09-16 22:28:12

#	User	Length	Language	Date
1	Thomas Feld	19	Ruby	2025-06-25 14:58:53
2	Russell Ng	22	Ruby	2025-05-12 14:36:28
3	Miorel Palii	42	Ruby	2025-06-28 16:11:34
4	Þorsteinn Sævar Kristjánsson	48	Ruby	2025-10-01 18:42:18
5	Mads Larsen	73	Ruby	2025-10-10 20:04:41
6	John Ray Clementz A. Servo	122	Ruby	2025-08-06 12:09:31
7	Hidden user	306	Ruby	2025-09-22 03:11:53

#	User	Length	Language	Date
1	Noah Yorgey	166	Rust	2025-05-02 18:59:20
2	Artur Khuziakhmetov	167	Rust	2025-04-28 10:45:32
3	Vincent Lagerros	174	Rust	2025-04-24 17:07:34
4	Emil Dichmann	187	Rust	2025-08-15 21:56:45
5	Florian ten Napel	254	Rust	2025-05-14 14:30:27
6	David Rasch	273	Rust	2025-07-03 14:11:53
7	Henrik Josefsson	287	Rust	2025-07-10 13:52:08
8	Nathaniel Risum	301	Rust	2025-05-23 12:32:54
9	Pankajkumar Patro	337	Rust	2025-04-24 13:54:14
10	Isak Jägberg	341	Rust	2025-05-01 20:34:31

#	User	Length	Language	Date
1	AZm87	77	Swift	2025-07-03 00:10:55

#	User	Length	Language	Date
1	Rebecka Nordqvist	349	TypeScript	2025-07-15 12:37:00
2	Hidden user	438	TypeScript	2025-10-10 13:41:08
3	Bogdan Dimoiu	457	TypeScript	2025-10-10 14:58:39
4	Dimitrios Mageiras	477	TypeScript	2025-10-10 15:24:23

#	User	Length	Language	Date
1	Grettir Heimisson	971	Zig	2025-10-20 23:31:03

Solution running time distribution