Problem A
Call for Problems — Problem Statistics

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Submissions	5519
Accepted submissions	3063
Submission ratio	55.50%
Authors	2892
Full solves [?]	2813
Full solve Ratio	97.27%

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Ada	2024-10-06 17:15:28

#	User	Runtime	Language	Date
1	Edson Alves	0.01 s	APL	2025-01-08 15:46:34
2	Matzuka	0.01 s	APL	2025-03-02 11:12:55
3	Arvid Jonasson	0.02 s	APL	2025-06-11 13:58:17
4	Thomas Feld	0.02 s	APL	2025-09-18 10:01:42

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2024-11-13 00:58:35
2	Chenzhang Hu	0.01 s	Bash	2025-09-12 15:38:42
3	Thomas Feld	0.01 s	Bash	2025-09-18 09:59:56

#	User	Runtime	Language	Date
1	Deci Bel	0.04 s	C#	2024-10-06 18:45:41
2	Nicholas Hood	0.04 s	C#	2024-10-07 01:59:53
3	Esty Crow	0.04 s	C#	2024-10-10 20:58:34
4	clarence chen	0.04 s	C#	2024-10-11 18:38:26
5	Jan Matthiessen	0.04 s	C#	2024-10-12 09:56:10
6	Sam Curry	0.04 s	C#	2024-10-14 16:51:12
7	Benjamin Bilbeau	0.04 s	C#	2024-10-14 18:55:21
8	Գոռ Բաղդասարյան	0.04 s	C#	2024-10-23 11:44:22
9	Anthony Ye	0.04 s	C#	2024-10-24 22:46:04
10	Dennis Stegnell	0.04 s	C#	2024-11-05 15:03:34

#	User	Runtime	Language	Date
1	Kevin Gomez	0.01 s	Common Lisp	2025-11-22 07:03:40
2	Norvell Spearman	0.03 s	Common Lisp	2024-12-19 00:27:46

#	User	Runtime	Language	Date
1	Stefan Schmiedl	0.08 s	F#	2024-10-11 22:17:43
2	Hidden user	0.08 s	F#	2024-12-11 13:08:32
3	Magnus Baasch Langkilde	0.08 s	F#	2025-03-03 19:53:54

#	User	Runtime	Language	Date
1	Angus Gibson	0.00 s	Forth	2025-07-15 01:48:39

#	User	Runtime	Language	Date
1	Norbert Voelker	0.00 s	Go	2024-10-06 18:04:51
2	Jimmy Nejtron	0.00 s	Go	2024-10-21 10:40:50
3	Matthias Doepmann	0.00 s	Go	2025-04-12 11:22:03
4	Philip Ritchey	0.00 s	Go	2025-04-14 15:45:19

#	User	Runtime	Language	Date
1	Suhas T. Nagar	0.04 s	Java	2024-10-05 20:02:46
2	Sriniketh Vangaru	0.04 s	Java	2024-10-05 20:02:58
3	Adeline Greene	0.04 s	Java	2024-10-05 20:05:36
4	Isaac Light	0.04 s	Java	2024-10-05 20:06:05
5	speedycatfish	0.04 s	Java	2024-10-05 20:06:16
6	Nina	0.04 s	Java	2024-10-05 20:06:26
7	Matthew Sheldon	0.04 s	Java	2024-10-05 20:07:51
8	Andrew Li	0.04 s	Java	2024-10-05 20:08:13
9	Michael Ferguson	0.04 s	Java	2024-10-05 20:09:31
10	Tyler Xiao	0.04 s	Java	2024-10-05 20:10:05

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-10-08 02:14:52
2	Hidden user	0.04 s	JavaScript (Node.js)	2024-10-09 04:49:42
3	Gonçalo Novo	0.04 s	JavaScript (Node.js)	2025-07-24 18:07:00
4	Erlend Raa Vågset	0.04 s	JavaScript (Node.js)	2025-10-03 13:38:33

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2024-10-06 05:37:28
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2024-10-06 10:51:48
3	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-10-14 19:33:57
4	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2024-10-28 19:28:02
5	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-12-05 13:56:14
6	Sam Parks	0.02 s	JavaScript (SpiderMonkey)	2025-01-28 19:47:13
7	Aziz Souiai	0.02 s	JavaScript (SpiderMonkey)	2025-01-29 03:26:38
8	Shishir	0.02 s	JavaScript (SpiderMonkey)	2025-02-10 15:11:56
9	Ben Armstrong	0.02 s	JavaScript (SpiderMonkey)	2025-06-29 12:57:56

#	User	Runtime	Language	Date
1	Timothy Gaede	0.48 s	Julia	2025-03-21 04:39:27
2	Danny Robinson	0.63 s	Julia	2024-11-13 01:00:08

#	User	Runtime	Language	Date
1	Evgeny Pivovarskiy	0.20 s	Kotlin	2025-01-22 15:57:27
2	Jake Bounds	0.21 s	Kotlin	2024-10-05 20:04:46
3	Daniel Jarabek	0.21 s	Kotlin	2024-10-05 20:07:26
4	Adam Rankin	0.21 s	Kotlin	2024-11-22 03:20:57
5	Ayden Coughlin	0.23 s	Kotlin	2024-10-05 20:18:58

#	User	Runtime	Language	Date
1	Jaydan Aladro	0.00 s	Lua	2024-10-07 05:41:10
2	Matthew Farshad	0.00 s	Lua	2025-02-07 21:23:59

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Nim	2024-10-06 17:39:01
2	Alfred Morgan	0.00 s	Nim	2025-10-27 07:05:19

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	OCaml	2024-10-06 17:32:20
2	Martha Kosa	0.00 s	OCaml	2025-11-15 06:15:58

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.13 s	Octave	2024-10-07 17:08:43

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-04-21 18:53:40

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Pascal	2024-10-06 17:44:03
2	Ingemar Ragnemalm	0.00 s	Pascal	2024-11-10 10:25:16

#	User	Runtime	Language	Date
1	J Sotomayor	0.00 s	Perl	2025-04-13 20:52:07

#	User	Runtime	Language	Date
1	James Marzolf-Miller	0.07 s	Python 2	2025-04-15 23:33:57
2	Sivasankaran D	0.07 s	Python 2	2025-08-01 14:45:05
3	KALAJAYANTHI M	0.07 s	Python 2	2025-09-22 19:51:08

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Python 3	2024-10-05 20:03:26
2	Joshua Ganschow	0.04 s	Python 3	2024-10-05 20:03:29
3	Joshua Hammer	0.04 s	Python 3	2024-10-05 20:03:33
4	Aidan Priore	0.04 s	Python 3	2024-10-05 20:03:49
5	Tytus Woodburn	0.04 s	Python 3	2024-10-05 20:03:52
6	Neil Rahman	0.04 s	Python 3	2024-10-05 20:04:08
7	Vincent Li	0.04 s	Python 3	2024-10-05 20:04:10
8	Luke Pearcy	0.04 s	Python 3	2024-10-05 20:04:11
9	Ahmed Siadomar	0.04 s	Python 3	2024-10-05 20:04:22
10	Munir Kudrati-Plummer	0.04 s	Python 3	2024-10-05 20:04:24

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2024-10-08 09:58:29
2	Frederik Petersen	0.06 s	Ruby	2024-10-14 13:58:52
3	Noah Hessen Bjerke	0.07 s	Ruby	2024-10-10 10:31:04
4	Alexander Bilde Pedersen	0.07 s	Ruby	2024-10-28 10:26:02
5	Miorel Palii	0.07 s	Ruby	2024-11-09 07:55:28
6	Guillermo Hernández	0.07 s	Ruby	2024-12-05 23:50:31
7	Russell Ng	0.07 s	Ruby	2025-05-16 10:20:28

#	User	Runtime	Language	Date
1	Rebecka Nordqvist	0.04 s	TypeScript	2025-07-15 14:35:49

#	User	Runtime	Language	Date
1	Ștefan-Iulian Alecu	0.04 s	Visual Basic	2025-11-02 16:34:03

#	User	Runtime	Language	Date
1	Ian Riley	0.00 s	Zig	2024-10-14 20:40:11
2	Grettir Heimisson	0.00 s	Zig	2025-10-25 20:11:41

#	User	Length	Language	Date
1	Sebastian Banert	287	Ada	2024-10-06 17:15:28

#	User	Length	Language	Date
1	Arvid Jonasson	23	APL	2025-06-11 13:58:17
2	Thomas Feld	23	APL	2025-09-18 10:01:42
3	Matzuka	59	APL	2025-03-02 11:12:55
4	Edson Alves	274	APL	2025-01-08 15:46:34

#	User	Length	Language	Date
1	Chenzhang Hu	21	Bash	2025-09-12 15:38:42
2	Thomas Feld	21	Bash	2025-09-18 09:59:56
3	Danny Robinson	33	Bash	2024-11-13 00:58:35

#	User	Length	Language	Date
1	Martin Blom	102	C	2025-09-23 13:42:19
2	Aron Cullberg	105	C	2025-09-25 10:32:45
3	Gabriel Lavier	120	C	2024-10-30 05:03:28
4	Jonatan Altebro	122	C	2025-02-14 12:47:03
5	Kavya S	173	C	2025-04-03 17:48:46
6	Hidden user	180	C	2025-03-31 16:04:52
7	Ellison Zhu	182	C	2025-01-21 19:35:38
8	Finn Uddling	182	C	2025-09-30 18:30:04
9	Bergur Snorrason	182	C	2025-11-13 09:19:48
10	MADHUMITHA K	186	C	2025-04-07 03:38:13

#	User	Length	Language	Date
1	Jan Matthiessen	207	C#	2024-10-12 09:56:10
2	Tonny Abrahamsson	212	C#	2025-11-21 00:38:23
3	Jessica Gustafsson	269	C#	2025-05-08 16:36:16
4	svante	275	C#	2025-02-06 09:34:35
5	Esty Crow	308	C#	2024-10-10 20:58:34
6	clarence chen	322	C#	2024-10-11 18:38:26
7	Anthony Ye	322	C#	2024-10-24 22:46:04
8	Said Montaño	409	C#	2025-03-17 22:24:35
9	alexander	417	C#	2025-04-12 13:01:24
10	Benjamin Bilbeau	427	C#	2024-10-14 18:55:21

#	User	Length	Language	Date
1	Andrew Polizzotto	117	C++	2024-10-06 05:31:32
2	Shang Zhou	142	C++	2024-10-07 20:43:45
3	Calvin Higgins	143	C++	2025-06-13 01:24:32
4	Ronan	149	C++	2025-04-22 05:56:13
5	Evan Michael Bailey	155	C++	2025-06-12 03:38:25
6	Frans Meulenbroeks	160	C++	2024-10-23 08:20:39
7	Uday Sarangal	166	C++	2024-10-31 11:16:36
8	Armen Andreasyan	171	C++	2024-10-12 11:37:28
9	Jayden Wong	171	C++	2025-09-18 20:32:38
10	Iman Khodadi	175	C++	2024-10-07 11:43:06

#	User	Length	Language	Date
1	Kevin Gomez	41	Common Lisp	2025-11-22 07:03:40
2	Norvell Spearman	397	Common Lisp	2024-12-19 00:27:46

#	User	Length	Language	Date
1	Stefan Schmiedl	172	F#	2024-10-11 22:17:43
2	Hidden user	216	F#	2024-12-11 13:08:32
3	Magnus Baasch Langkilde	321	F#	2025-03-03 19:53:54

#	User	Length	Language	Date
1	Angus Gibson	185	Forth	2025-07-15 01:48:39

#	User	Length	Language	Date
1	Jimmy Nejtron	172	Go	2024-10-21 10:40:50
2	Philip Ritchey	257	Go	2025-04-14 15:45:19
3	Norbert Voelker	445	Go	2024-10-06 18:04:51
4	Matthias Doepmann	3278	Go	2025-04-12 11:22:03

#	User	Length	Language	Date
1	Juan Miguel Vilar	53	Haskell	2025-10-03 13:52:36
2	Sebastian Banert	71	Haskell	2024-10-06 17:28:11
3	Adhyan H.	88	Haskell	2025-11-02 23:20:14
4	Christopher Whelan	116	Haskell	2025-01-01 03:37:09
5	Herdi Saleh	123	Haskell	2025-03-21 09:28:05
6	Daniel Cabral	125	Haskell	2024-10-23 22:18:17
7	Timur Khazhiev	128	Haskell	2024-12-31 09:43:23
8	Ramesh baskaran	136	Haskell	2024-10-08 18:24:50
9	Alessandro Bruni	136	Haskell	2024-10-25 16:48:02
10	Hidden user	138	Haskell	2025-04-04 13:58:36

#	User	Length	Language	Date
1	Raymond Arrington	274	Java	2024-11-18 16:09:27
2	Jack Lewicki	279	Java	2024-10-12 20:21:13
3	Terry Morris	281	Java	2025-11-14 17:32:52
4	Jeremiah John Rust Junior	289	Java	2024-10-25 21:03:46
5	Hannah Mao	293	Java	2024-10-05 22:13:32
6	MOHAN KUMAR S	296	Java	2025-04-04 12:36:08
7	Pedro Marcet	300	Java	2024-10-05 20:32:03
8	Curtis Zhang	304	Java	2024-10-05 20:23:56
9	Isabel Humphreys	306	Java	2024-10-05 20:24:23
10	Lane Braus	306	Java	2024-10-31 18:37:18

#	User	Length	Language	Date
1	Erlend Raa Vågset	188	JavaScript (Node.js)	2025-10-03 13:38:33
2	Gonçalo Novo	295	JavaScript (Node.js)	2025-07-24 18:07:00
3	Hidden user	322	JavaScript (Node.js)	2024-10-09 04:49:42
4	Hidden user	600	JavaScript (Node.js)	2024-10-08 02:14:52

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	45	JavaScript (SpiderMonkey)	2024-10-06 10:52:36
2	Jimmy Gustafsson	47	JavaScript (SpiderMonkey)	2024-12-05 13:56:14
3	Bjørn Chr. Soltvedt	64	JavaScript (SpiderMonkey)	2024-10-06 05:38:55
4	Ben Armstrong	84	JavaScript (SpiderMonkey)	2025-06-29 12:57:56
5	Zach Tschetter	101	JavaScript (SpiderMonkey)	2024-10-28 19:29:19
6	Evan Magill	112	JavaScript (SpiderMonkey)	2024-10-14 19:33:57
7	Aziz Souiai	196	JavaScript (SpiderMonkey)	2025-01-29 03:26:38
8	Shishir	208	JavaScript (SpiderMonkey)	2025-02-10 15:11:56
9	Sam Parks	209	JavaScript (SpiderMonkey)	2025-01-28 19:47:13

#	User	Length	Language	Date
1	Danny Robinson	49	Julia	2024-11-13 01:00:08
2	Timothy Gaede	299	Julia	2025-03-21 04:39:27

#	User	Length	Language	Date
1	Daniel Jarabek	198	Kotlin	2024-10-05 20:07:26
2	Jake Bounds	217	Kotlin	2024-10-05 20:04:46
3	Adam Rankin	243	Kotlin	2024-11-22 03:20:57
4	Evgeny Pivovarskiy	260	Kotlin	2025-01-22 15:57:27
5	Ayden Coughlin	359	Kotlin	2024-10-13 02:22:04

#	User	Length	Language	Date
1	Jaydan Aladro	56	Lua	2024-10-07 05:41:10
2	Matthew Farshad	201	Lua	2025-02-07 21:23:59

#	User	Length	Language	Date
1	Alfred Morgan	130	Nim	2025-10-27 07:05:19
2	Sebastian Banert	146	Nim	2024-10-06 17:39:01

#	User	Length	Language	Date
1	Martha Kosa	184	OCaml	2025-11-15 06:15:58
2	Sebastian Banert	204	OCaml	2024-10-06 17:32:20

#	User	Length	Language	Date
1	Sven Rönnbäck	264	Octave	2024-10-07 17:08:43

#	User	Length	Language	Date
1	Hidden user	285	Odin	2025-04-21 18:53:40

#	User	Length	Language	Date
1	Sebastian Banert	186	Pascal	2024-10-06 17:44:03
2	Ingemar Ragnemalm	193	Pascal	2024-11-10 10:25:16

#	User	Length	Language	Date
1	J Sotomayor	78	Perl	2025-04-13 20:52:07

#	User	Length	Language	Date
1	Sivasankaran D	106	Python 2	2025-08-01 14:45:05
2	James Marzolf-Miller	225	Python 2	2025-04-15 23:33:57
3	KALAJAYANTHI M	379	Python 2	2025-09-22 19:51:08

#	User	Length	Language	Date
1	Jaydan Aladro	42	Python 3	2024-10-07 05:37:38
2	Noah Hessen Bjerke	42	Python 3	2024-10-10 10:30:02
3	Kevin Gomez	42	Python 3	2024-10-22 07:17:29
4	Daniel Bogorad	42	Python 3	2025-10-06 16:27:21
5	Alexandre Douard	48	Python 3	2024-10-07 17:19:35
6	Andrew Tapia	48	Python 3	2024-10-09 04:15:14
7	Shashank Bhatt	49	Python 3	2024-10-08 16:43:40
8	Nicholas Russell Saerang	49	Python 3	2024-10-13 03:12:51
9	Timothy Baeckelant	50	Python 3	2024-12-01 12:26:07
10	Teikn Smith	51	Python 3	2024-10-06 20:24:14

#	User	Length	Language	Date
1	Thomas Feld	23	Ruby	2024-10-08 09:58:29
2	Russell Ng	23	Ruby	2025-05-16 10:20:28
3	Noah Hessen Bjerke	28	Ruby	2024-10-10 10:31:04
4	Frederik Petersen	28	Ruby	2024-10-14 13:58:52
5	Guillermo Hernández	33	Ruby	2024-12-05 23:52:09
6	Alexander Bilde Pedersen	53	Ruby	2024-10-28 10:26:02
7	Miorel Palii	60	Ruby	2024-11-09 07:55:28

#	User	Length	Language	Date
1	Vincent Lagerros	123	Rust	2024-10-06 13:36:14
2	Ian Riley	229	Rust	2024-10-11 22:51:30
3	Emil Dichmann	231	Rust	2025-08-16 12:59:36
4	Bas Dirks	261	Rust	2024-12-25 21:14:59
5	David Rasch	296	Rust	2024-10-08 17:11:57
6	Pankajkumar Patro	383	Rust	2024-10-07 14:10:13
7	Sebastian Banert	404	Rust	2024-10-06 17:57:11
8	Isak Jägberg	413	Rust	2024-10-10 16:07:43
9	Will	437	Rust	2025-02-10 05:52:21
10	Hidden user	491	Rust	2024-10-21 20:10:50

#	User	Length	Language	Date
1	Rebecka Nordqvist	446	TypeScript	2025-07-15 14:35:49

#	User	Length	Language	Date
1	Ștefan-Iulian Alecu	137	Visual Basic	2025-11-02 16:34:03

#	User	Length	Language	Date
1	Ian Riley	555	Zig	2024-10-14 20:40:11
2	Grettir Heimisson	2291	Zig	2025-10-25 20:15:58

Solution running time distribution