Problem A
Concatenate — Problem Statistics

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Submissions	906
Accepted submissions	559
Submission ratio	61.70%
Authors	541
Accepted authors	527
Author ratio	97.41%

#	User	Score	Language	Date
1	Matzuka	100	APL	2025-04-11 10:58:38

#	User	Score	Language	Date
1	Chenzhang Hu	100	Bash	2025-04-11 10:38:51
2	Mattia Marziali	100	Bash	2025-04-11 12:59:10
3	Danny Robinson	100	Bash	2025-04-22 16:40:25
4	Jakob Rødal Skaar	100	Bash	2025-04-28 20:12:00

#	User	Score	Language	Date
1	Dennis Stegnell	100	C#	2025-04-11 07:36:03
2	Deci Bel	100	C#	2025-04-11 20:00:46
3	svante	100	C#	2025-04-18 12:54:17
4	Matias Córdova	100	C#	2025-04-22 15:21:02
5	Nicholas Hood	100	C#	2025-04-30 02:14:34
6	Julio Cesar	100	C#	2025-05-02 18:26:03
7	Juan Pablo Morales	100	C#	2025-05-03 21:15:03

#	User	Score	Language	Date
1	yraten	100	Common Lisp	2025-04-28 14:18:11

#	User	Score	Language	Date
1	Magnus Baasch Langkilde	100	F#	2025-04-23 09:35:57

#	User	Score	Language	Date
1	keyansheng	100	Go	2025-04-16 09:29:25

#	User	Score	Language	Date
1	Atli Fannar Franklín	100	Haskell	2025-04-11 20:54:20
2	Brent Yorgey	100	Haskell	2025-04-13 03:02:00
3	Steinar Simonnes	100	Haskell	2025-04-15 07:27:14
4	Herdi Saleh	100	Haskell	2025-04-16 08:21:28
5	Timur Khazhiev	100	Haskell	2025-04-16 09:39:34

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	100	JavaScript (SpiderMonkey)	2025-04-11 00:25:50
2	Benjamin Justice	100	JavaScript (SpiderMonkey)	2025-04-19 00:33:43
3	Christian Cederquist	100	JavaScript (SpiderMonkey)	2025-04-30 07:00:08

#	User	Score	Language	Date
1	Timothy Gaede	100	Julia	2025-04-11 08:36:42

#	User	Score	Language	Date
1	Hamdanil Rasyid	100	Kotlin	2025-04-12 05:43:37

#	User	Score	Language	Date
1	Shinji Koshida	100	Lua	2025-04-13 14:04:38

#	User	Score	Language	Date
1	Hidden user	100	Odin	2025-04-20 00:50:54

#	User	Score	Language	Date
1	Ingemar Ragnemalm	100	Pascal	2025-04-15 20:48:56

#	User	Score	Language	Date
1	J Sotomayor	100	Perl	2025-04-14 04:48:16

#	User	Score	Language	Date
1	Arnar Bjarni Arnarson	100	Prolog	2025-04-12 02:32:05

#	User	Score	Language	Date
1	..	100	Python 2	2025-04-15 09:38:21

#	User	Score	Language	Date
1	Noah Hessen Bjerke	100	Ruby	2025-04-12 21:35:15

#	User	Score	Language	Date
1	Kristinn Vikar	100	Rust	2025-02-22 17:18:21
2	Vincent Lagerros	100	Rust	2025-04-11 16:23:44
3	Pankajkumar Patro	100	Rust	2025-04-12 01:14:25
4	Frank Endriss	100	Rust	2025-04-14 10:00:23
5	Paul Rezzonico	100	Rust	2025-04-16 09:50:47
6	Isak Jägberg	100	Rust	2025-04-16 17:25:20
7	Noah Yorgey	100	Rust	2025-04-16 17:49:14
8	Jacob Pletcher	100	Rust	2025-04-18 22:28:33
9	Mikael Fiala-Lundström	100	Rust	2025-04-21 23:57:22
10	Gabriella	100	Rust	2025-04-22 16:12:07

#	User	Score	Language	Date
1	Hidden user	100	Swift	2025-04-10 23:52:46
2	La Ode muhammad Yudhy Prayitno	100	Swift	2025-04-12 17:41:49

#	User	Runtime	Language	Date
1	Matzuka	0.01 s	APL	2025-04-11 10:58:38

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Bash	2025-04-11 10:38:51
2	Mattia Marziali	0.01 s	Bash	2025-04-11 12:59:10
3	Danny Robinson	0.01 s	Bash	2025-04-22 16:40:25
4	Jakob Rødal Skaar	0.01 s	Bash	2025-04-28 20:12:00

#	User	Runtime	Language	Date
1	Dennis Stegnell	0.04 s	C#	2025-04-11 07:36:03
2	Deci Bel	0.04 s	C#	2025-04-11 20:00:46
3	svante	0.04 s	C#	2025-04-18 12:54:17
4	Matias Córdova	0.04 s	C#	2025-04-22 15:21:02
5	Nicholas Hood	0.04 s	C#	2025-04-30 02:14:34
6	Julio Cesar	0.04 s	C#	2025-05-02 18:26:03
7	Juan Pablo Morales	0.04 s	C#	2025-05-03 21:15:03

#	User	Runtime	Language	Date
1	yraten	0.03 s	Common Lisp	2025-04-28 14:18:11

#	User	Runtime	Language	Date
1	Magnus Baasch Langkilde	0.06 s	F#	2025-04-23 09:35:57

#	User	Runtime	Language	Date
1	keyansheng	0.00 s	Go	2025-04-16 09:29:25

#	User	Runtime	Language	Date
1	Atli Fannar Franklín	0.00 s	Haskell	2025-04-11 20:54:20
2	Brent Yorgey	0.00 s	Haskell	2025-04-13 03:02:00
3	Steinar Simonnes	0.00 s	Haskell	2025-04-15 07:27:14
4	Herdi Saleh	0.00 s	Haskell	2025-04-16 08:21:28
5	Timur Khazhiev	0.00 s	Haskell	2025-04-16 09:39:34

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Java	2025-04-13 14:35:11
2	Ben Cobb	0.04 s	Java	2025-04-14 16:27:18
3	eti2	0.04 s	Java	2025-04-21 14:34:45
4	Brenna Hays	0.08 s	Java	2025-04-05 16:12:19
5	Hidden user	0.08 s	Java	2025-04-05 16:22:52
6	Hunter Mullen	0.08 s	Java	2025-04-10 22:15:12
7	Narmadha	0.08 s	Java	2025-04-11 02:29:38
8	KISHHORE S	0.08 s	Java	2025-04-11 06:59:45
9	PRIYANKA M	0.08 s	Java	2025-04-11 07:02:38
10	PAVISH V	0.08 s	Java	2025-04-11 09:04:46

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2025-04-11 00:25:50
2	Benjamin Justice	0.02 s	JavaScript (SpiderMonkey)	2025-04-19 00:33:43
3	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2025-04-30 07:00:08

#	User	Runtime	Language	Date
1	Timothy Gaede	0.29 s	Julia	2025-04-11 08:36:42

#	User	Runtime	Language	Date
1	Hamdanil Rasyid	0.20 s	Kotlin	2025-04-12 05:43:37

#	User	Runtime	Language	Date
1	Shinji Koshida	0.00 s	Lua	2025-04-13 14:04:38

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-04-20 00:50:54

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2025-04-15 20:48:56

#	User	Runtime	Language	Date
1	J Sotomayor	0.00 s	Perl	2025-04-14 04:48:16

#	User	Runtime	Language	Date
1	Arnar Bjarni Arnarson	0.02 s	Prolog	2025-04-12 02:32:05

#	User	Runtime	Language	Date
1	..	0.07 s	Python 2	2025-04-15 09:38:21

#	User	Runtime	Language	Date
1	Einar Darri sveinbjörnsson	0.04 s	Python 3	2025-02-22 13:01:25
2	Hannes Kristján Hannesson	0.04 s	Python 3	2025-02-22 13:03:46
3	Jón Logi Dagbjartsson	0.04 s	Python 3	2025-02-22 13:04:00
4	Hlynur Hafsteinsson	0.04 s	Python 3	2025-02-22 13:05:30
5	Óliver Máni	0.04 s	Python 3	2025-02-22 13:06:22
6	Bjartur Sigurjonsson	0.04 s	Python 3	2025-02-22 13:34:35
7	Samúel Hafsteinsson	0.04 s	Python 3	2025-02-22 13:40:12
8	Bjarki Ágúst Guðmundsson	0.04 s	Python 3	2025-02-22 13:46:43
9	Milan Petrusic	0.04 s	Python 3	2025-02-22 14:53:03
10	Hidden user	0.04 s	Python 3	2025-02-22 15:14:03

#	User	Runtime	Language	Date
1	Noah Hessen Bjerke	0.06 s	Ruby	2025-04-12 21:35:15

#	User	Runtime	Language	Date
1	Kristinn Vikar	0.00 s	Rust	2025-02-22 17:18:21
2	Vincent Lagerros	0.00 s	Rust	2025-04-11 16:23:44
3	Pankajkumar Patro	0.00 s	Rust	2025-04-12 01:14:25
4	Frank Endriss	0.00 s	Rust	2025-04-14 10:00:23
5	Paul Rezzonico	0.00 s	Rust	2025-04-16 09:50:47
6	Isak Jägberg	0.00 s	Rust	2025-04-16 17:25:20
7	Noah Yorgey	0.00 s	Rust	2025-04-16 17:49:14
8	Jacob Pletcher	0.00 s	Rust	2025-04-18 22:28:33
9	Mikael Fiala-Lundström	0.00 s	Rust	2025-04-21 23:57:22
10	Gabriella	0.00 s	Rust	2025-04-22 16:12:07

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Swift	2025-04-10 23:52:46
2	La Ode muhammad Yudhy Prayitno	0.00 s	Swift	2025-04-12 17:41:49

#	User	Length	Language	Date
1	Matzuka	20	APL	2025-04-11 11:06:05

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2025-04-11 10:41:27
2	Danny Robinson	9	Bash	2025-04-22 16:40:25
3	Mattia Marziali	10	Bash	2025-04-11 12:59:10
4	Jakob Rødal Skaar	23	Bash	2025-04-28 20:12:00

#	User	Length	Language	Date
1	Jonatan Altebro	87	C	2025-04-14 12:12:04
2	Hidden user	93	C	2025-04-24 07:17:06
3	MYLAMBIGAI G	103	C	2025-04-18 12:18:14
4	KEERTHIRAJ G	104	C	2025-04-24 10:23:50
5	Hidden user	105	C	2025-04-19 12:26:05
6	KAMALESH SK	106	C	2025-04-16 11:35:15
7	SOUNDHARYA C	106	C	2025-04-23 08:03:30
8	Hidden user	117	C	2025-04-22 08:49:41
9	MANOJKUMAR N	118	C	2025-04-11 12:39:36
10	MADHAN A	118	C	2025-04-16 08:03:30

#	User	Length	Language	Date
1	svante	102	C#	2025-04-18 12:54:17
2	Deci Bel	109	C#	2025-04-11 20:00:46
3	Juan Pablo Morales	178	C#	2025-05-03 21:15:03
4	Nicholas Hood	258	C#	2025-04-30 02:14:34
5	Matias Córdova	303	C#	2025-04-22 15:21:02
6	Julio Cesar	306	C#	2025-05-02 18:26:03
7	Dennis Stegnell	409	C#	2025-04-11 07:36:03

#	User	Length	Language	Date
1	吳秉諺	105	C++	2025-04-29 14:07:35
2	Ralf Merhof	108	C++	2025-04-18 12:10:45
3	Timofii Zorin	111	C++	2025-04-16 14:33:09
4	Andrei Dima	115	C++	2025-04-15 08:06:02
5	Jayden Gardner	115	C++	2025-04-15 21:28:10
6	KANITHA M S	115	C++	2025-04-21 11:24:51
7	Jesús Pacheco Alonso	116	C++	2025-04-12 14:24:41
8	Tanya Gogunska	117	C++	2025-05-02 15:58:52
9	Supphakrit Kongsiriwattanakul	121	C++	2025-04-05 16:09:59
10	Muchamad Iqbal Fauzi	123	C++	2025-04-24 03:16:00

#	User	Length	Language	Date
1	yraten	73	Common Lisp	2025-04-28 14:18:11

#	User	Length	Language	Date
1	Magnus Baasch Langkilde	345	F#	2025-04-23 09:35:57

#	User	Length	Language	Date
1	keyansheng	274	Go	2025-04-16 09:29:25

#	User	Length	Language	Date
1	Steinar Simonnes	27	Haskell	2025-04-15 07:27:14
2	Herdi Saleh	28	Haskell	2025-04-16 12:01:56
3	Atli Fannar Franklín	78	Haskell	2025-04-11 20:54:20
4	Timur Khazhiev	81	Haskell	2025-04-16 09:39:34
5	Brent Yorgey	190	Haskell	2025-04-13 03:02:00

#	User	Length	Language	Date
1	eti2	149	Java	2025-04-21 14:39:43
2	VIGNESHWARAN.M	160	Java	2025-04-13 14:32:47
3	Kavya S	173	Java	2025-04-11 06:15:19
4	PAVITHRA M	187	Java	2025-04-11 05:59:58
5	Narmadha	202	Java	2025-04-11 02:29:38
6	Lane Braus	209	Java	2025-05-01 05:36:30
7	PAVISH V	212	Java	2025-04-11 09:04:46
8	Jackson Simoneau	215	Java	2025-04-11 21:26:05
9	HARINI P	217	Java	2025-04-17 06:52:37
10	KAILASH GOWTHAM M	221	Java	2025-04-11 09:06:50

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	29	JavaScript (SpiderMonkey)	2025-04-11 00:25:50
2	Benjamin Justice	53	JavaScript (SpiderMonkey)	2025-04-19 00:33:43
3	Christian Cederquist	74	JavaScript (SpiderMonkey)	2025-04-30 07:00:08

#	User	Length	Language	Date
1	Timothy Gaede	88	Julia	2025-04-11 08:36:42

#	User	Length	Language	Date
1	Hamdanil Rasyid	46	Kotlin	2025-04-12 05:43:37

#	User	Length	Language	Date
1	Shinji Koshida	68	Lua	2025-04-13 14:04:38

#	User	Length	Language	Date
1	Hidden user	495	Odin	2025-04-20 00:50:54

#	User	Length	Language	Date
1	Ingemar Ragnemalm	104	Pascal	2025-04-15 20:48:56

#	User	Length	Language	Date
1	J Sotomayor	50	Perl	2025-04-14 04:48:16

#	User	Length	Language	Date
1	Arnar Bjarni Arnarson	869	Prolog	2025-04-12 02:32:05

#	User	Length	Language	Date
1	..	29	Python 2	2025-04-15 09:38:21

#	User	Length	Language	Date
1	Einar Darri sveinbjörnsson	22	Python 3	2025-02-22 13:01:25
2	Elvar Árni Bjarnason	22	Python 3	2025-02-22 16:17:13
3	Lorenz Jade Ycot	22	Python 3	2025-03-08 12:36:50
4	Bjørn Chr. Soltvedt	22	Python 3	2025-04-11 00:30:21
5	Jiaye Will Wang	22	Python 3	2025-04-11 02:37:48
6	Nicholas Russell Saerang	22	Python 3	2025-04-11 04:09:36
7	Markus Mathiasen	22	Python 3	2025-04-11 08:39:16
8	Mattia Marziali	22	Python 3	2025-04-11 12:56:58
9	Lasse Letager Hansen	22	Python 3	2025-04-11 13:57:07
10	Simen Sørensen	22	Python 3	2025-04-11 15:32:32

#	User	Length	Language	Date
1	Noah Hessen Bjerke	18	Ruby	2025-04-12 21:35:15

#	User	Length	Language	Date
1	Mikael Fiala-Lundström	146	Rust	2025-04-22 01:10:18
2	Vincent Lagerros	147	Rust	2025-04-11 16:23:44
3	Pankajkumar Patro	185	Rust	2025-04-12 01:14:25
4	Isak Jägberg	219	Rust	2025-04-16 17:25:20
5	Jacob Pletcher	246	Rust	2025-04-18 22:28:33
6	Paul Rezzonico	274	Rust	2025-04-16 09:50:47
7	Kristinn Vikar	1022	Rust	2025-02-22 17:18:21
8	Noah Yorgey	1114	Rust	2025-04-16 17:49:14
9	Gabriella	1207	Rust	2025-04-22 16:12:07
10	Frank Endriss	38201	Rust	2025-04-14 10:00:23

#	User	Length	Language	Date
1	Hidden user	50	Swift	2025-04-10 23:52:46
2	La Ode muhammad Yudhy Prayitno	79	Swift	2025-04-12 17:41:49

Solution running time distribution