Problem A
Zamka — Problem Statistics

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Submissions	18781
Accepted submissions	10646
Submission ratio	56.68%
Authors	10042
Accepted authors	9623
Author ratio	95.83%

#	User	Runtime	Language	Date
1	Steve Allen	0.07 s	APL	2023-04-23 01:02:38

#	User	Runtime	Language	Date
1	Stijn Peeters	0.02 s	C#	2016-05-04 12:29:06
2	Quinn Pommerening	0.02 s	C#	2016-05-06 16:03:58
3	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-05-06 18:42:06
4	Pontus Magnusson	0.02 s	C#	2016-05-15 18:10:57
5	Khin Nyunt	0.02 s	C#	2016-05-22 17:06:49
6	Omid Sadjadi	0.02 s	C#	2016-05-28 14:54:18
7	Bernhard Kartefla	0.02 s	C#	2016-05-29 21:35:09
8	Faisal Rahman	0.02 s	C#	2016-06-07 17:09:23
9	Patrick Sjöö	0.02 s	C#	2016-06-10 11:00:46
10	Robert Low	0.02 s	C#	2016-07-13 16:50:54

#	User	Runtime	Language	Date
1	Dmytro Bihniak	0.01 s	Common Lisp	2019-08-29 14:57:50
2	John Dandy	0.01 s	Common Lisp	2020-01-27 06:33:53
3	wibi	0.01 s	Common Lisp	2020-08-19 08:18:39
4	Michal Žáček	0.01 s	Common Lisp	2023-05-01 00:56:41
5	Steve Losh	0.02 s	Common Lisp	2018-12-22 01:51:06
6	Hidden user	0.02 s	Common Lisp	2019-01-02 12:10:25
7	Michael Reis	0.02 s	Common Lisp	2019-03-19 15:54:22
8	David Cawthon	0.02 s	Common Lisp	2019-04-24 05:26:46
9	yraten	0.04 s	Common Lisp	2024-08-27 13:56:35

#	User	Runtime	Language	Date
1	Rahel Zeleke	0.01 s	Dart	2023-11-27 14:48:39

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-05-17 19:37:26
2	Stefan Schmiedl	0.08 s	F#	2024-09-04 16:14:30

#	User	Runtime	Language	Date
1	Drew Wilson	0.00 s	Go	2023-08-17 08:50:38
2	Temkin Abdulmelik	0.00 s	Go	2023-09-10 14:45:00
3	Shirley Tang	0.00 s	Go	2023-10-23 11:43:24
4	Diego Saldias	0.00 s	Go	2023-10-24 23:08:56
5	suka isnaini	0.00 s	Go	2023-12-16 16:57:17
6	Pierre Ortegat	0.00 s	Go	2024-06-02 18:49:19
7	Zakki Baldani	0.00 s	Go	2025-03-09 14:54:44
8	Krzysztof Gibuła	0.02 s	Go	2019-01-10 20:32:34
9	Hidden user	0.02 s	Go	2020-03-11 13:47:37
10	Rd Clare	0.02 s	Go	2020-04-02 02:03:07

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2025-02-21 07:53:17
2	Terrence Park	0.05 s	Java	2016-04-13 20:27:05
3	Simon Xue	0.05 s	Java	2016-04-15 12:59:57
4	Hidden user	0.05 s	Java	2016-04-15 17:14:58
5	Hidden user	0.05 s	Java	2016-05-04 09:26:04
6	Lee Wei Hong	0.05 s	Java	2016-05-13 10:05:25
7	Toe Pyae Sone Oo	0.05 s	Java	2016-05-22 06:46:57
8	poemayphyu	0.05 s	Java	2016-05-22 07:51:22
9	Luu Nhat Phi	0.05 s	Java	2016-05-26 05:37:07
10	Nick Wu	0.05 s	Java	2016-07-01 04:07:57

#	User	Runtime	Language	Date
1	Athergaming	0.05 s	JavaScript (Node.js)	2023-10-13 06:11:58
2	Dalton Neely	0.06 s	JavaScript (Node.js)	2018-07-08 04:32:36
3	Camilo Aparecido Ferri Moreira	0.06 s	JavaScript (Node.js)	2018-08-05 01:26:44
4	Anh Lâm	0.06 s	JavaScript (Node.js)	2018-09-09 05:27:23
5	Carrot	0.06 s	JavaScript (Node.js)	2018-10-09 21:46:19
6	Oussama	0.06 s	JavaScript (Node.js)	2018-10-23 17:06:13
7	Carl Sundvall	0.06 s	JavaScript (Node.js)	2018-10-27 14:51:24
8	Chyld Medford	0.06 s	JavaScript (Node.js)	2018-11-05 21:12:00
9	Hidden user	0.06 s	JavaScript (Node.js)	2018-11-26 13:19:31
10	Qom Javadolaemeh	0.06 s	JavaScript (Node.js)	2018-12-27 01:04:43

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-04-14 23:26:12
2	Sebastian Lindgren	0.01 s	JavaScript (SpiderMonkey)	2016-05-25 12:00:57
3	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-05 23:11:08
4	Friðjón Guðjohnsen	0.01 s	JavaScript (SpiderMonkey)	2017-02-08 20:37:47
5	Johannes Tomasson	0.01 s	JavaScript (SpiderMonkey)	2017-02-20 03:11:17
6	Michael Hjortholt	0.01 s	JavaScript (SpiderMonkey)	2017-07-11 01:06:54
7	Martin Jay	0.01 s	JavaScript (SpiderMonkey)	2017-10-31 16:45:16
8	Mark Bouchkevitch	0.02 s	JavaScript (SpiderMonkey)	2016-08-07 14:34:17
9	Spencer Smith	0.02 s	JavaScript (SpiderMonkey)	2017-06-06 18:48:15
10	Davíð Helgason	0.02 s	JavaScript (SpiderMonkey)	2017-08-04 16:10:49

#	User	Runtime	Language	Date
1	Timothy Gaede	0.49 s	Julia	2024-03-19 15:11:58
2	Czylabson Asa	0.55 s	Julia	2025-03-03 19:42:39
3	Danny Robinson	0.71 s	Julia	2023-06-25 01:40:19

#	User	Runtime	Language	Date
1	Albert Pala	0.11 s	Kotlin	2021-05-27 04:08:23
2	Thanh Le	0.11 s	Kotlin	2021-07-15 16:00:14
3	Jacob Huebner	0.14 s	Kotlin	2020-03-10 15:35:02
4	Vyas Nellutla	0.15 s	Kotlin	2018-10-03 04:04:14
5	Dayan Ruben Gonzalez	0.15 s	Kotlin	2020-09-30 02:43:48
6	Leonid Vysochyn	0.16 s	Kotlin	2017-10-28 22:16:54
7	Dau Huy Minh	0.16 s	Kotlin	2022-10-08 18:15:38
8	Sebastian Angin	0.16 s	Kotlin	2022-11-12 17:17:38
9	Kiel Dowdle	0.17 s	Kotlin	2020-03-13 19:03:16
10	Ákos Grabecz	0.17 s	Kotlin	2021-06-04 15:51:02

#	User	Runtime	Language	Date
1	Graham Hopper	0.00 s	OCaml	2019-07-18 10:38:06
2	Erik K	0.00 s	OCaml	2020-09-12 08:19:13

#	User	Runtime	Language	Date
1	Egor Shchetinin	0.00 s	Pascal	2018-01-20 17:31:40
2	Vova Podkorytov	0.00 s	Pascal	2018-01-20 17:33:01
3	羅棨洭5A14 Law Kai Hong	0.00 s	Pascal	2018-10-08 15:51:25
4	Hidden user	0.00 s	Pascal	2020-02-12 18:00:25
5	Aria Ghora Prabono	0.00 s	Pascal	2020-09-10 13:07:48
6	David Connolly	0.00 s	Pascal	2021-11-17 14:28:06

#	User	Runtime	Language	Date
1	Saito Ta	0.06 s	Perl	2024-03-29 08:28:14

#	User	Runtime	Language	Date
1	Silvena Lam	0.01 s	PHP	2016-06-07 08:41:06
2	Steven D. Wilson	0.01 s	PHP	2016-11-15 07:24:42
3	Ali Pandidan	0.01 s	PHP	2016-11-16 07:33:35
4	Mohammed Yousif	0.01 s	PHP	2018-04-24 23:58:40
5	Salvis	0.01 s	PHP	2019-01-25 12:44:07
6	LordWeedlle	0.01 s	PHP	2019-02-24 20:46:30
7	Prahlad Yeri	0.01 s	PHP	2019-03-02 06:12:38
8	Hidden user	0.01 s	PHP	2019-03-27 15:12:00
9	Petr Trofimov	0.01 s	PHP	2019-07-03 08:07:03
10	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-08 15:05:58

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2019-06-27 17:15:19
2	Hakan Kjellerstrand	0.03 s	Prolog	2023-01-22 20:12:54
3	Hadi Qovaizi	0.05 s	Prolog	2016-05-05 16:55:42
4	Daniel Krueger	0.08 s	Prolog	2021-03-14 20:49:35

#	User	Runtime	Language	Date
1	Robert Welin-Berger	0.02 s	Python 3	2016-04-13 18:14:03
2	Wayne	0.02 s	Python 3	2016-04-18 11:09:32
3	Anže Mlakar	0.02 s	Python 3	2016-04-18 11:28:36
4	Magnus Thomé	0.02 s	Python 3	2016-05-11 20:32:50
5	Kasper Thim	0.02 s	Python 3	2016-05-19 13:49:05
6	Hidden user	0.02 s	Python 3	2016-05-25 02:22:33
7	Lucia Pál (Simanová)	0.02 s	Python 3	2016-06-13 03:34:26
8	Abdalah El-Barrad	0.02 s	Python 3	2016-06-17 04:53:55
9	Dennis Mårtensson	0.02 s	Python 3	2016-06-18 18:17:44
10	Davi Ajmaya	0.02 s	Python 3	2016-08-14 18:59:59

#	User	Runtime	Language	Date
1	Dalton Cole	0.03 s	Ruby	2016-06-12 22:27:01
2	Leonardo Brito	0.04 s	Ruby	2016-06-20 22:52:36
3	Erik Rydbert	0.04 s	Ruby	2016-07-08 08:45:04
4	Brandon Ibbotson	0.04 s	Ruby	2017-03-02 05:22:15
5	Charlie Egan	0.04 s	Ruby	2017-03-31 17:42:32
6	Paul Vinell	0.04 s	Ruby	2018-03-01 18:11:51
7	Lasse Berglund	0.05 s	Ruby	2016-05-05 04:19:37
8	Sonam Tenzin	0.05 s	Ruby	2017-07-11 12:39:39
9	Jason Cheong-Kee-You	0.05 s	Ruby	2018-05-27 04:07:00
10	Daniel Harder	0.05 s	Ruby	2018-08-31 23:27:29

#	User	Runtime	Language	Date
1	Danial Haseeb	0.00 s	Swift	2023-10-09 04:43:52

#	User	Length	Language	Date
1	Steve Allen	74	APL	2023-04-23 01:06:15

#	User	Length	Language	Date
1	Martin Blom	176	C	2023-12-15 09:47:00
2	Christian Lindeström	256	C	2016-08-14 21:51:59
3	Hidden user	261	C	2016-08-18 17:38:38
4	Bogandam Dheeraj	262	C	2017-02-05 08:34:08
5	Suresh Babu Avula	289	C	2016-09-22 17:25:51
6	Illa Somasekhar	304	C	2018-11-08 12:07:54
7	Future New	312	C	2018-05-25 15:02:12
8	Tobias Nordlund	320	C	2018-12-11 17:00:48
9	Latha Sree P	331	C	2018-03-03 09:47:56
10	Simon Lindström	334	C	2018-11-20 20:43:26

#	User	Length	Language	Date
1	Aiden Bilyeu	443	C#	2023-05-07 21:50:28
2	Göran Andersson	457	C#	2022-05-06 23:35:00
3	Kunwei Zhang	488	C#	2018-02-04 09:28:22
4	Matilda V Mjd	490	C#	2018-09-26 15:49:05
5	girisaichaitanya bheemisetty	509	C#	2023-10-08 03:25:39
6	Medha Alla	517	C#	2023-10-08 20:42:29
7	SINDHURAALLA	529	C#	2023-10-09 03:41:22
8	Manikanta Raj Chodisetti	532	C#	2021-06-17 22:52:35
9	Siddharth Sasidharan	532	C#	2021-06-18 02:09:22
10	bhanu prakash konda	547	C#	2023-10-05 05:39:10

#	User	Length	Language	Date
1	Thành Đạt	264	C++	2018-11-24 04:51:59
2	Sarowar	282	C++	2022-11-16 18:14:51
3	Antonio Molina Lovett	283	C++	2016-08-05 12:41:11
4	妹様万歳	283	C++	2019-12-30 06:14:54
5	Santiago Ley	284	C++	2018-07-29 19:54:50
6	huang ian	286	C++	2024-12-14 15:10:31
7	Kerk Tai Heng	288	C++	2025-01-13 16:53:05
8	ck1080922羅聖祈	289	C++	2020-04-15 12:42:51
9	Hidden user	292	C++	2024-07-14 09:26:35
10	Ping	298	C++	2024-05-09 14:40:48

#	User	Length	Language	Date
1	David Cawthon	308	Common Lisp	2019-04-24 05:26:46
2	Michal Žáček	326	Common Lisp	2023-05-01 00:56:41
3	wibi	361	Common Lisp	2020-08-19 08:18:39
4	John Dandy	389	Common Lisp	2020-01-27 06:34:25
5	Dmytro Bihniak	420	Common Lisp	2019-08-29 14:57:50
6	yraten	426	Common Lisp	2024-08-27 13:56:35
7	Steve Losh	450	Common Lisp	2018-12-22 01:51:06
8	Hidden user	572	Common Lisp	2019-01-02 12:10:25
9	Michael Reis	2092	Common Lisp	2019-03-19 15:54:22

#	User	Length	Language	Date
1	Rahel Zeleke	696	Dart	2023-11-27 14:48:39

#	User	Length	Language	Date
1	Stefan Schmiedl	523	F#	2024-09-04 16:14:30
2	Jacob Harris Cryer Kragh	536	F#	2022-05-17 19:37:26

#	User	Length	Language	Date
1	Neal McCarthy	359	Go	2018-04-16 17:29:26
2	Jimmy Nejtron	361	Go	2022-11-09 20:21:33
3	Marcus Legendre	375	Go	2018-01-16 22:28:20
4	Paul Boddington	388	Go	2016-05-17 18:24:33
5	suka isnaini	393	Go	2023-12-16 16:57:17
6	Hidden user	393	Go	2021-12-13 22:52:43
7	Pörös Dávid	394	Go	2019-01-11 09:26:50
8	Alejandro Germain	397	Go	2018-09-29 23:11:53
9	Ian Howell	406	Go	2016-05-06 06:49:01
10	Robert Brandner	409	Go	2020-07-05 16:34:53

#	User	Length	Language	Date
1	John Doe	116	Haskell	2023-04-14 08:58:21
2	Phan Ngọc Tiên	185	Haskell	2022-03-25 07:51:35
3	Jannik Olbrich	206	Haskell	2019-01-12 20:18:01
4	Morten Lohne	237	Haskell	2018-04-18 15:57:39
5	Sebastian Banert	242	Haskell	2023-04-05 10:52:53
6	Jonathan L	244	Haskell	2017-06-28 21:08:47
7	Monique Oliveira	245	Haskell	2021-05-01 03:50:44
8	Zach Tschetter	259	Haskell	2021-09-28 02:48:05
9	Tomas Möre	270	Haskell	2019-05-25 23:43:01
10	Qi Ji	279	Haskell	2018-06-20 02:01:10

#	User	Length	Language	Date
1	Udit Sanghi	449	Java	2021-07-18 08:50:22
2	Emilie Hyslop	463	Java	2020-09-27 08:54:15
3	Nyamdavaa Amar	481	Java	2021-07-15 11:50:01
4	Tiffani Slutsky	494	Java	2022-07-02 02:23:43
5	Oskar Larsson	495	Java	2017-10-04 21:01:35
6	Hamza Bjitrø	495	Java	2018-12-12 18:59:54
7	Kumar Chakraborty	500	Java	2023-08-13 10:52:55
8	Kok Chun Zhi	501	Java	2021-11-27 15:43:27
9	Yunlong Li	504	Java	2017-01-05 04:52:31
10	Hidden user	505	Java	2018-05-19 20:16:03

#	User	Length	Language	Date
1	Chris Wong	488	JavaScript (Node.js)	2021-01-31 20:09:35
2	Karim Dridi	547	JavaScript (Node.js)	2022-01-13 22:00:40
3	Christina Sonebo	571	JavaScript (Node.js)	2019-12-09 20:22:18
4	asterisk man	582	JavaScript (Node.js)	2021-05-04 02:35:06
5	Antoine Bauri	614	JavaScript (Node.js)	2021-02-15 14:23:16
6	Chyld Medford	630	JavaScript (Node.js)	2018-11-05 21:12:00
7	Hidden user	633	JavaScript (Node.js)	2018-11-26 13:19:31
8	Anh Lâm	635	JavaScript (Node.js)	2018-09-09 05:27:23
9	Hitali Shah	692	JavaScript (Node.js)	2021-03-09 20:04:05
10	Gurmeet Kaur	695	JavaScript (Node.js)	2021-03-10 05:53:55

#	User	Length	Language	Date
1	Christian Cederquist	101	JavaScript (SpiderMonkey)	2022-10-30 02:11:05
2	Evan Magill	168	JavaScript (SpiderMonkey)	2024-04-09 05:06:09
3	Zachary DeStefano	305	JavaScript (SpiderMonkey)	2018-09-10 01:02:38
4	Bernard Perrin	322	JavaScript (SpiderMonkey)	2019-01-16 17:24:23
5	Bjørn Chr. Soltvedt	383	JavaScript (SpiderMonkey)	2016-04-14 23:26:12
6	Johannes Tomasson	384	JavaScript (SpiderMonkey)	2017-02-20 03:11:17
7	Jimmy Gustafsson	386	JavaScript (SpiderMonkey)	2022-06-15 08:46:08
8	Robin Livesey	391	JavaScript (SpiderMonkey)	2018-04-14 14:59:47
9	Tor Nordqvist	413	JavaScript (SpiderMonkey)	2016-11-05 23:11:08
10	Casey Smith	415	JavaScript (SpiderMonkey)	2019-05-17 21:56:39

#	User	Length	Language	Date
1	Czylabson Asa	90	Julia	2025-03-03 20:19:48
2	Danny Robinson	104	Julia	2023-06-25 01:40:19
3	Timothy Gaede	715	Julia	2024-03-19 15:11:58

#	User	Length	Language	Date
1	Troy Warmboe	275	Kotlin	2018-10-20 06:37:53
2	Magnus Wass	327	Kotlin	2020-03-05 21:31:42
3	Dmitry Shostak	366	Kotlin	2018-06-16 17:42:35
4	Sergey Jakobsen	381	Kotlin	2021-03-11 17:54:20
5	Clinton Walker	381	Kotlin	2020-02-23 01:53:31
6	Yang Tang	385	Kotlin	2023-06-21 10:29:05
7	Mohsen Dehbashi	420	Kotlin	2021-02-10 15:07:22
8	Alex Williams	430	Kotlin	2018-12-16 04:44:26
9	Colin Gay	442	Kotlin	2019-05-23 21:09:26
10	Dau Huy Minh	462	Kotlin	2022-10-08 18:15:38

#	User	Length	Language	Date
1	Graham Hopper	756	OCaml	2019-07-18 10:38:06
2	Erik K	1727	OCaml	2020-09-12 08:19:13

#	User	Length	Language	Date
1	羅棨洭5A14 Law Kai Hong	361	Pascal	2018-10-08 15:51:25
2	Egor Shchetinin	364	Pascal	2018-01-20 17:31:40
3	Vova Podkorytov	401	Pascal	2018-01-20 17:33:01
4	Hidden user	433	Pascal	2020-02-12 18:00:25
5	Aria Ghora Prabono	614	Pascal	2020-09-10 13:07:48
6	David Connolly	619	Pascal	2021-11-17 14:28:06

#	User	Length	Language	Date
1	Saito Ta	84	Perl	2024-03-29 08:28:14

#	User	Length	Language	Date
1	Steven D. Wilson	238	PHP	2016-11-15 07:24:42
2	Mohammed Yousif	285	PHP	2018-04-24 23:58:40
3	Erwin Merioles	286	PHP	2017-02-23 15:42:45
4	Salvis	310	PHP	2019-01-25 12:44:07
5	Petr Trofimov	416	PHP	2019-07-03 08:07:03
6	Jonas Lindenskov Nielsen	427	PHP	2019-10-08 15:05:58
7	Prahlad Yeri	491	PHP	2019-03-02 06:12:38
8	Thomas Marty	515	PHP	2021-01-24 23:41:04
9	Ali Pandidan	553	PHP	2016-11-16 07:33:35
10	Jakub Krajč	617	PHP	2022-09-22 11:48:02

#	User	Length	Language	Date
1	Hakan Kjellerstrand	282	Prolog	2023-01-22 20:12:54
2	Andriy Zyevakov	850	Prolog	2019-06-27 17:15:19
3	Daniel Krueger	1151	Prolog	2021-03-14 20:49:35
4	Hadi Qovaizi	2133	Prolog	2020-06-12 17:34:03

#	User	Length	Language	Date
1	Clement Oh	94	Python 3	2023-05-28 15:56:43
2	Kevin Gomez	102	Python 3	2023-08-02 00:18:13
3	Tam Keng Hong	112	Python 3	2023-01-10 10:23:39
4	Christopher Kopp	112	Python 3	2023-03-10 04:49:56
5	Benjamin Z White	112	Python 3	2023-04-05 14:10:27
6	..	114	Python 3	2025-01-21 12:18:16
7	Wouter Dijkstra	117	Python 3	2022-06-18 22:16:18
8	Ole markus Bråthen	120	Python 3	2023-03-06 20:48:03
9	Błażej Dariusz Roszkowski	125	Python 3	2022-12-05 02:16:50
10	Kelly Dance	128	Python 3	2024-06-12 03:59:43

#	User	Length	Language	Date
1	Thomas Feld	61	Ruby	2022-11-03 08:54:30
2	dick move	61	Ruby	2022-12-06 03:05:07
3	Russell Ng	73	Ruby	2024-06-16 22:12:16
4	Clement Oh	99	Ruby	2023-10-22 09:29:25
5	Daniel Harder	105	Ruby	2018-08-31 23:27:29
6	Régis Hanol	107	Ruby	2022-01-04 21:52:08
7	Alexander Bilde Pedersen	118	Ruby	2023-04-05 23:24:14
8	Niraj P	147	Ruby	2017-02-14 15:41:32
9	Patrick Elsen	169	Ruby	2022-09-09 13:36:11
10	Olivia Bednar	196	Ruby	2019-09-02 04:02:58

#	User	Length	Language	Date
1	Vincent Lagerros	430	Rust	2024-10-10 10:47:50
2	Pankajkumar Patro	595	Rust	2024-06-25 00:52:58
3	Andriy Semenistiy	611	Rust	2021-02-07 12:53:54
4	Neill Johnston	613	Rust	2020-04-15 01:23:00
5	Florent Haratyk	731	Rust	2019-04-06 00:57:33
6	Dan Wolff	742	Rust	2021-03-19 19:28:52
7	Simon Grünwald	750	Rust	2023-07-13 23:37:16
8	Búgvi Benjamin Magnussen	763	Rust	2021-03-21 01:29:19
9	Emil Dichmann	765	Rust	2024-01-31 20:12:18
10	Marcus Sebastian Emil Holmgaard	770	Rust	2023-08-04 12:55:34

#	User	Length	Language	Date
1	Danial Haseeb	426	Swift	2023-10-09 04:43:52

Solution running time distribution