Problem A
Server — Problem Statistics

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Submissions	19617
Accepted submissions	7951
Submission ratio	40.53%
Authors	7493
Full solves [?]	6967
Full solve Ratio	92.98%

#	User	Runtime	Language	Date
1	Michael Wichlinski	0.00 s	Ada	2025-04-10 01:00:34

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-02 08:40:48
2	Manish shrestha	0.01 s	Bash	2025-04-15 09:13:36
3	Chenzhang Hu	0.01 s	Bash	2025-09-12 13:53:39

#	User	Runtime	Language	Date
1	Jens Mossig	0.02 s	C#	2015-12-25 21:17:04
2	Faisal Rahman	0.02 s	C#	2016-01-15 00:01:34
3	Sean Gorsky	0.02 s	C#	2016-02-08 23:57:30
4	Soonfay Yee	0.02 s	C#	2016-02-09 00:35:03
5	Joe Amenta	0.02 s	C#	2016-04-05 02:15:30
6	Khin Nyunt	0.02 s	C#	2016-04-17 04:05:49
7	Raja Sanjeev Kumar Nakka	0.02 s	C#	2016-04-29 18:09:55
8	lobo	0.02 s	C#	2016-05-22 06:53:02
9	Robert Low	0.02 s	C#	2016-07-16 09:51:42
10	Duelene Olson	0.02 s	C#	2016-08-04 02:51:26

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-04-10 02:04:11

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2022-07-14 13:38:28

#	User	Runtime	Language	Date
1	Arunangshu Biswas	0.00 s	Go	2023-09-20 03:28:37
2	Suka Isnaini	0.00 s	Go	2023-12-05 15:57:08
3	Kiki Ibrahim	0.00 s	Go	2024-05-05 11:25:12
4	Hidden user	0.00 s	Go	2024-05-08 05:37:17
5	Sunho Kim	0.00 s	Go	2024-06-17 07:04:41
6	Jimmy Nejtron	0.00 s	Go	2024-12-29 12:20:14
7	Matthias Doepmann	0.00 s	Go	2025-04-15 18:41:04
8	Sebastian Jimenez	0.00 s	Go	2025-04-24 03:53:18
9	Diamond	0.02 s	Go	2022-11-19 04:17:29
10	Hidden user	0.07 s	Go	2018-10-12 18:36:47

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Java	2024-10-21 18:52:34
2	Jessica	0.04 s	Java	2024-10-21 18:55:09
3	Guangyi Zhou	0.04 s	Java	2024-12-17 14:20:27
4	Amidala Hoffmén	0.04 s	Java	2025-02-07 15:14:09
5	Hidden user	0.04 s	Java	2025-02-12 13:01:20
6	Hidden user	0.04 s	Java	2025-04-17 18:02:19
7	Elaica Dela Cruz	0.04 s	Java	2025-06-25 10:26:13
8	Chris Wu	0.05 s	Java	2015-10-24 17:04:37
9	Eskil Jarlskog	0.05 s	Java	2015-10-24 17:05:52
10	Kensen Shi	0.05 s	Java	2015-10-24 17:11:20

#	User	Runtime	Language	Date
1	Hamza Hasbi	0.04 s	JavaScript (Node.js)	2023-10-14 16:28:17
2	Gonçalo Novo	0.04 s	JavaScript (Node.js)	2025-07-24 11:13:24
3	Shaw Robillard	0.04 s	JavaScript (Node.js)	2025-07-26 14:25:38
4	Dario Delle Donne	0.05 s	JavaScript (Node.js)	2018-12-18 10:59:34
5	Tomáš Necky Necuda	0.05 s	JavaScript (Node.js)	2019-02-05 20:54:22
6	console.log	0.05 s	JavaScript (Node.js)	2019-03-08 19:46:12
7	Gurpartap Singh Bhatti	0.05 s	JavaScript (Node.js)	2019-05-26 12:22:34
8	Hidden user	0.05 s	JavaScript (Node.js)	2024-09-01 16:12:16
9	Jerry Hu	0.06 s	JavaScript (Node.js)	2019-02-15 15:08:00
10	Emil Larsson	0.06 s	JavaScript (Node.js)	2019-06-16 00:29:23

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-19 22:46:24
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2015-12-31 17:50:12
3	Hidden user	0.01 s	JavaScript (SpiderMonkey)	2016-01-07 19:41:17
4	Ionel Hindorean	0.01 s	JavaScript (SpiderMonkey)	2016-12-02 11:10:16
5	Christopher Tse	0.01 s	JavaScript (SpiderMonkey)	2017-03-24 00:28:23
6	Alan Delaney	0.01 s	JavaScript (SpiderMonkey)	2017-04-12 00:40:24
7	Peter Menyes	0.01 s	JavaScript (SpiderMonkey)	2017-08-25 14:41:33
8	Hai Yang Xu	0.01 s	JavaScript (SpiderMonkey)	2017-09-24 03:05:46
9	Desireé af Geijerstam	0.01 s	JavaScript (SpiderMonkey)	2018-01-16 21:25:13
10	Dilawar Mahmood	0.01 s	JavaScript (SpiderMonkey)	2018-01-27 18:20:57

#	User	Runtime	Language	Date
1	Timothy Gaede	0.53 s	Julia	2024-05-31 03:48:19

#	User	Runtime	Language	Date
1	Thanh Le	0.11 s	Kotlin	2021-07-13 17:27:39
2	Jahid Hasan Imon	0.12 s	Kotlin	2020-07-01 22:30:35
3	Jacob Huebner	0.13 s	Kotlin	2021-05-31 04:19:31
4	Léo Eduardo Silva	0.14 s	Kotlin	2020-09-11 23:34:36
5	Brilian Ade Putra	0.14 s	Kotlin	2021-03-03 16:07:32
6	Gaurav Tyagi	0.15 s	Kotlin	2018-09-06 22:43:00
7	Dayan Ruben Gonzalez	0.15 s	Kotlin	2020-09-27 23:50:02
8	Nico Metger	0.15 s	Kotlin	2021-10-22 16:24:50
9	Ahmed Waseem Saeed	0.16 s	Kotlin	2021-12-18 13:01:19
10	Phường Lên	0.18 s	Kotlin	2019-12-25 04:05:09

#	User	Runtime	Language	Date
1	Remigijus Jodelis	0.00 s	Nim	2025-07-23 13:05:02

#	User	Runtime	Language	Date
1	Fredrik Eriksson	0.00 s	OCaml	2024-11-03 01:30:38
2	Hidden user	0.00 s	OCaml	2025-06-22 18:13:24

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2017-08-23 15:53:24
2	Ingemar Ragnemalm	0.00 s	Pascal	2017-09-04 05:54:29
3	Vova Podkorytov	0.00 s	Pascal	2017-12-20 15:47:41
4	Egor Shchetinin	0.00 s	Pascal	2018-01-15 14:13:17
5	林達炘4D20 Lam Tat Yan	0.00 s	Pascal	2020-02-14 06:30:54

#	User	Runtime	Language	Date
1	Steven D. Wilson	0.01 s	PHP	2016-11-25 17:27:46
2	Markus Weller	0.01 s	PHP	2019-02-21 12:03:08
3	Abdullah Akbar	0.01 s	PHP	2019-04-30 18:29:12
4	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-09-21 16:14:20
5	Fluff Abrahamsson	0.01 s	PHP	2020-10-01 19:34:03
6	cojonas1	0.01 s	PHP	2021-02-02 15:40:19
7	devina thessalonica	0.01 s	PHP	2021-05-01 04:30:23
8	wendy lau	0.01 s	PHP	2021-05-09 09:04:53
9	Ivan Mintarja	0.01 s	PHP	2021-08-02 16:30:13
10	daniel pranoto	0.01 s	PHP	2021-08-02 18:45:28

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2016-03-30 21:16:16
2	Hadi Qovaizi	0.01 s	Prolog	2016-04-17 17:25:31
3	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-06 07:40:09

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.02 s	Python 2	2015-10-24 17:45:02
2	Frederik Højholt	0.02 s	Python 2	2015-10-27 18:41:01
3	Asger Hautop Drewsen	0.02 s	Python 2	2015-11-03 20:28:36
4	Carl Martin Rosenberg	0.02 s	Python 2	2015-11-08 21:44:30
5	Hans Rusten	0.02 s	Python 2	2015-11-29 12:35:09
6	Urban Pettersson	0.02 s	Python 2	2016-01-20 19:03:56
7	Ryan Godisman	0.02 s	Python 2	2016-02-08 23:38:04
8	Arsh Raza	0.02 s	Python 2	2016-02-08 23:42:10
9	Aleksandr Dobrev	0.02 s	Python 2	2016-02-22 18:20:22
10	Alexander Teno	0.02 s	Python 2	2016-02-25 21:17:07

#	User	Runtime	Language	Date
1	Charles Zinn	0.02 s	Python 3	2015-10-24 17:04:12
2	Emil Riis Hansen	0.02 s	Python 3	2015-10-28 21:21:56
3	曾威凱	0.02 s	Python 3	2015-11-06 06:57:24
4	Kevin Froman	0.02 s	Python 3	2015-11-20 18:39:55
5	Tammo Behrends	0.02 s	Python 3	2015-12-01 11:09:32
6	Martin Stensgård	0.02 s	Python 3	2016-01-24 05:04:57
7	Wayne	0.02 s	Python 3	2016-01-27 09:26:23
8	Joshua Zygmunt	0.02 s	Python 3	2016-02-03 07:33:20
9	Joshua Martin Tjahjadi	0.02 s	Python 3	2016-02-05 18:27:45
10	Heidi Sand	0.02 s	Python 3	2016-02-07 14:33:47

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-02-04 15:05:50
2	Gerry Hall	0.03 s	Ruby	2016-03-27 19:27:44
3	Lasse Berglund	0.03 s	Ruby	2016-04-01 10:31:21
4	Erik Rydbert	0.03 s	Ruby	2016-07-12 00:16:15
5	Hidden user	0.03 s	Ruby	2016-08-12 06:48:25
6	Chris Weston	0.03 s	Ruby	2016-09-29 13:40:08
7	Clifford Owino	0.03 s	Ruby	2017-05-25 05:24:56
8	Daniel Harder	0.04 s	Ruby	2018-09-01 01:16:34
9	Hidden user	0.04 s	Ruby	2018-10-12 18:28:44
10	Uğurcan Eser	0.04 s	Ruby	2018-11-12 17:56:16

#	User	Runtime	Language	Date
1	Anton J Olsson	0.09 s	TypeScript	2023-08-06 15:18:53

#	User	Runtime	Language	Date
1	Joe Blower	0.00 s	Zig	2025-05-23 01:07:34

#	User	Length	Language	Date
1	Michael Wichlinski	1085	Ada	2025-04-10 01:00:34

#	User	Length	Language	Date
1	Chenzhang Hu	45	Bash	2025-09-12 13:53:39
2	Danny Robinson	62	Bash	2023-09-02 08:40:48
3	Manish shrestha	231	Bash	2025-04-15 09:13:36

#	User	Length	Language	Date
1	Martin Blom	109	C	2023-11-14 20:33:48
2	Magnus Wass	184	C	2020-03-16 21:10:43
3	Hidden user	188	C	2017-07-13 20:50:18
4	Koulury Benarji	194	C	2018-11-07 07:34:50
5	Wesley Stephanak	196	C	2019-02-05 06:04:20
6	Yap Yi Juinn Jacelyn	197	C	2016-12-17 04:55:15
7	huy lý	200	C	2022-10-04 06:21:06
8	Yogindra Addanki	208	C	2020-01-20 14:23:01
9	Nagata Parama Aptana	212	C	2021-08-10 15:14:19
10	Muhammed Ali Aytürk	215	C	2020-03-12 21:37:55

#	User	Length	Language	Date
1	Medha Alla	317	C#	2023-10-24 15:01:32
2	Krishnasai Chaluvadi	317	C#	2023-10-29 16:21:36
3	Sravani Dondapati	332	C#	2023-10-27 16:59:34
4	bhanu prakash konda	347	C#	2023-10-25 02:22:49
5	Kunwei Zhang	359	C#	2018-06-12 09:57:46
6	Manoj Naidu Arasada	395	C#	2023-10-29 23:37:46
7	Lucía María Alvarez Sánchez	405	C#	2023-04-18 23:33:20
8	Wyatt	405	C#	2023-04-29 18:34:55
9	SINDHURAALLA	405	C#	2023-10-24 13:48:31
10	Fernanda Ferrer Ortega	407	C#	2023-02-26 06:29:10

#	User	Length	Language	Date
1	Frans Meulenbroeks	116	C++	2024-11-15 08:11:37
2	黃太陽	157	C++	2022-02-25 18:29:23
3	Chase Hinesman	184	C++	2017-10-05 23:18:06
4	Admasu Abera	189	C++	2019-10-04 06:44:50
5	Kaiyue Li	192	C++	2020-06-12 14:15:15
6	Abdul Malik Nurrokhman	193	C++	2016-11-22 07:26:48
7	Oskar Haarklou Veileborg	196	C++	2015-11-06 11:53:31
8	Chur Zhe Yaw	199	C++	2019-07-03 06:47:13
9	a_b__c	199	C++	2021-08-15 18:31:25
10	Hoàng Bá Tuân	200	C++	2016-10-28 04:44:41

#	User	Length	Language	Date
1	David Cawthon	330	Common Lisp	2019-04-10 02:04:11

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	441	F#	2022-07-14 13:38:28

#	User	Length	Language	Date
1	Suka Isnaini	213	Go	2023-12-05 15:57:08
2	Reza Morsali	256	Go	2018-12-31 11:30:49
3	Kellen Watt	259	Go	2015-10-24 17:43:58
4	dick move	271	Go	2021-05-09 21:10:53
5	Bistok Diiel Lelono	288	Go	2021-04-18 04:42:57
6	ahmad rifai	296	Go	2021-08-05 06:37:09
7	Mohammad Ghifari Yusuf	316	Go	2021-04-05 12:08:00
8	Adam Evans	323	Go	2016-01-30 20:39:53
9	rizky alviandra	331	Go	2021-06-04 04:55:57
10	Mohammad Ghifari Yusuf	340	Go	2021-04-05 12:05:54

#	User	Length	Language	Date
1	Birk Tjelmeland	128	Haskell	2017-08-05 17:02:34
2	Steinar Simonnes	132	Haskell	2024-01-17 15:48:40
3	Øyvind Almli	173	Haskell	2021-09-22 19:44:17
4	Sebastian Banert	173	Haskell	2023-09-18 00:13:15
5	Peter Deal	181	Haskell	2016-05-12 19:59:21
6	Matthew Johnson	182	Haskell	2017-02-04 06:17:00
7	Agus Sentosa Hermawan	183	Haskell	2020-01-09 00:19:40
8	Anthony Clays	196	Haskell	2016-12-04 20:06:25
9	Lieven Marchand	208	Haskell	2017-09-15 19:02:38
10	Vasiliy Kevroletin	216	Haskell	2018-05-15 06:44:59

#	User	Length	Language	Date
1	Lim Ting Kai	267	Java	2023-06-04 21:41:36
2	Monica Wei	296	Java	2015-10-24 17:08:57
3	Benie Agonoy	306	Java	2018-10-21 02:55:22
4	Keith Raghubar	310	Java	2016-02-08 23:55:27
5	Khant Sithu Zaw	312	Java	2019-02-12 21:39:29
6	Elliot Beatty	315	Java	2018-09-26 12:33:06
7	Robert Lee	315	Java	2018-10-02 22:47:58
8	daniel pranoto	315	Java	2021-08-02 16:24:42
9	Shandy Siswandi	315	Java	2021-08-13 13:41:11
10	Hidden user	315	Java	2024-04-17 17:46:00

#	User	Length	Language	Date
1	Aidan Michalos	388	JavaScript (Node.js)	2022-04-07 01:35:11
2	Shaw Robillard	406	JavaScript (Node.js)	2025-07-26 14:25:38
3	Emil Larsson	474	JavaScript (Node.js)	2019-06-16 00:29:23
4	Christopher Walther	481	JavaScript (Node.js)	2021-04-09 22:53:25
5	Kevin Ma	510	JavaScript (Node.js)	2020-07-06 21:39:49
6	William Lim	514	JavaScript (Node.js)	2021-05-18 09:43:41
7	Hovhannes Kantuni	544	JavaScript (Node.js)	2021-03-13 01:59:24
8	syauqi fuadi	550	JavaScript (Node.js)	2021-05-18 08:34:50
9	Muhammad Taufiq Febrianto	551	JavaScript (Node.js)	2021-07-02 09:12:35
10	Cliff A2312235	570	JavaScript (Node.js)	2021-02-22 21:58:32

#	User	Length	Language	Date
1	Jimmy Gustafsson	123	JavaScript (SpiderMonkey)	2024-06-17 09:39:38
2	Evan Magill	131	JavaScript (SpiderMonkey)	2024-04-22 01:15:36
3	Christian Pilegaard Cederquist	137	JavaScript (SpiderMonkey)	2023-01-07 10:45:46
4	Hidden user	184	JavaScript (SpiderMonkey)	2024-09-06 18:33:24
5	Emily Krommendyk	184	JavaScript (SpiderMonkey)	2024-09-09 17:59:46
6	Zachary DeStefano	205	JavaScript (SpiderMonkey)	2018-09-24 19:34:17
7	Johannes Strelen	205	JavaScript (SpiderMonkey)	2018-12-06 18:18:11
8	Zach Tschetter	208	JavaScript (SpiderMonkey)	2023-04-20 23:05:11
9	Desireé af Geijerstam	213	JavaScript (SpiderMonkey)	2018-01-16 21:25:13
10	Brandon Chov	218	JavaScript (SpiderMonkey)	2024-09-06 18:33:47

#	User	Length	Language	Date
1	Timothy Gaede	389	Julia	2024-05-31 03:48:19

#	User	Length	Language	Date
1	Yang Tang	209	Kotlin	2023-07-29 05:48:49
2	Troy Warmboe	233	Kotlin	2023-04-11 14:27:02
3	Einar Kjellback	258	Kotlin	2019-12-15 13:58:57
4	Phường Lên	300	Kotlin	2019-12-25 04:05:09
5	Maicon Dall'Agnol	323	Kotlin	2020-09-11 20:41:31
6	Adam Rankin	350	Kotlin	2023-05-04 05:51:36
7	Sarek Høverstad Skotåm	359	Kotlin	2020-10-22 18:11:04
8	Stélvio Carvalho	367	Kotlin	2025-07-25 13:32:59
9	Dayan Ruben Gonzalez	373	Kotlin	2020-09-27 23:50:02
10	Dmitry Shostak	377	Kotlin	2018-06-22 06:41:22

#	User	Length	Language	Date
1	Remigijus Jodelis	394	Nim	2025-07-23 13:05:02

#	User	Length	Language	Date
1	Fredrik Eriksson	409	OCaml	2024-11-03 01:30:38
2	Hidden user	505	OCaml	2025-06-22 18:13:24

#	User	Length	Language	Date
1	Ingemar Ragnemalm	292	Pascal	2017-09-04 05:54:29
2	林達炘4D20 Lam Tat Yan	360	Pascal	2020-02-14 06:30:54
3	Vova Podkorytov	372	Pascal	2017-12-20 15:47:41
4	Egor Shchetinin	376	Pascal	2018-01-15 14:13:17
5	David Connolly	927	Pascal	2017-08-23 15:53:24

#	User	Length	Language	Date
1	Renate	236	PHP	2023-07-03 22:03:26
2	Fluff Abrahamsson	288	PHP	2020-10-01 19:34:03
3	Jonas Lindenskov Nielsen	343	PHP	2019-09-21 16:14:20
4	Steven D. Wilson	352	PHP	2016-11-25 17:27:46
5	Markus Weller	399	PHP	2019-02-21 12:03:08
6	cojonas1	414	PHP	2021-02-02 15:40:19
7	Abdullah Akbar	416	PHP	2019-04-30 18:29:12
8	Harvin Pratama	448	PHP	2021-08-17 14:51:10
9	devina thessalonica	488	PHP	2021-05-01 04:30:23
10	Daniel Pranoto	488	PHP	2021-08-02 19:02:53

#	User	Length	Language	Date
1	Hakan Kjellerstrand	227	Prolog	2023-02-06 07:42:10
2	Andriy Zyevakov	300	Prolog	2016-03-30 21:16:16
3	Hadi Qovaizi	2517	Prolog	2016-04-17 17:25:31

#	User	Length	Language	Date
1	Thomas Feld	122	Python 2	2019-08-19 10:33:18
2	Andreas Björklund	137	Python 2	2019-05-16 20:17:39
3	Hidden user	147	Python 2	2016-07-08 17:36:53
4	Syed Sarfaraz Akhtar	153	Python 2	2018-09-15 16:08:30
5	Haggai Liu	161	Python 2	2017-01-10 21:08:00
6	Cole Bite	161	Python 2	2017-03-08 19:48:42
7	Johann Ly	161	Python 2	2018-04-08 23:53:20
8	Jesper Öqvist	161	Python 2	2018-10-20 08:48:27
9	Johan Lyts	164	Python 2	2019-03-03 21:09:50
10	Peter Sofronas	170	Python 2	2017-08-25 17:20:40

#	User	Length	Language	Date
1	Clement Oh	84	Python 3	2023-05-22 14:36:22
2	Lasse Letager Hansen	103	Python 3	2023-07-26 17:44:29
3	Magnus Hokland Hegdahl	107	Python 3	2023-11-16 00:17:46
4	Hidden user	109	Python 3	2025-01-19 20:28:58
5	Charles Ancheta	110	Python 3	2023-04-07 20:17:04
6	Guk Yi Siong	113	Python 3	2023-12-24 14:14:06
7	Thibault Raffaillac	116	Python 3	2023-07-29 21:39:48
8	Andrew He	118	Python 3	2016-08-12 16:49:33
9	Harry Zhang	119	Python 3	2022-12-21 18:43:55
10	Ahmed Chamseddine	121	Python 3	2023-09-14 09:39:16

#	User	Length	Language	Date
1	Thomas Feld	48	Ruby	2023-02-08 13:37:15
2	Frederik Spang	54	Ruby	2023-02-04 11:22:38
3	Andreas Severin Hauch Trøstrup	89	Ruby	2023-02-04 10:19:42
4	Frederik Petersen	116	Ruby	2023-02-03 14:37:19
5	Régis Hanol	129	Ruby	2022-01-13 15:20:37
6	Eugen Neagoe	145	Ruby	2023-06-13 13:53:28
7	Hidden user	146	Ruby	2020-06-07 12:18:45
8	Macdara mac an tSionnaigh	147	Ruby	2019-09-28 19:46:33
9	Hidden user	151	Ruby	2018-10-12 18:28:44
10	Hidden user	155	Ruby	2019-02-16 16:55:31

#	User	Length	Language	Date
1	Vincent Lagerros	212	Rust	2024-12-03 20:08:58
2	Emil Dichmann	441	Rust	2025-09-20 13:59:41
3	Andreas Giehm	482	Rust	2025-09-20 13:58:24
4	Malte Kildelund Rosenkilde	515	Rust	2025-02-04 09:08:13
5	Erik Funder Carstensen	578	Rust	2022-11-29 16:06:50
6	David Zacek	579	Rust	2021-06-01 22:37:38
7	Andreas Just Petersen	587	Rust	2023-01-31 14:01:27
8	Chaoyi Yin	596	Rust	2019-01-06 05:25:54
9	Robert Janczewski	603	Rust	2020-02-10 15:02:24
10	Kok Dith	642	Rust	2021-08-15 06:09:48

#	User	Length	Language	Date
1	Anton J Olsson	642	TypeScript	2023-08-06 15:18:53

#	User	Length	Language	Date
1	Joe Blower	1038	Zig	2025-05-23 01:07:34

Solution running time distribution