Problem A
Riječi — Problem Statistics

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Submissions	8551
Accepted submissions	4760
Submission ratio	55.67%
Authors	4405
Full solves [?]	4162
Full solve Ratio	94.48%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-05 17:47:57
2	Chenzhang Hu	0.06 s	Bash	2023-09-24 16:25:40
3	Thomas Feld	0.06 s	Bash	2023-09-27 09:53:05

#	User	Runtime	Language	Date
1	Joe Amenta	0.01 s	C#	2016-04-04 22:04:27
2	Gustav Kalander	0.01 s	C#	2018-02-03 15:42:36
3	masosz	0.02 s	C#	2015-02-08 15:59:42
4	Teudis Naranjo Ortiz	0.02 s	C#	2015-02-21 15:07:52
5	Bas te Kolste	0.02 s	C#	2015-06-17 23:56:49
6	Lara Kozarski	0.02 s	C#	2015-06-20 09:44:00
7	Charlie Forsberg Hedberg	0.02 s	C#	2015-07-06 15:15:57
8	Mads Storm Hansen	0.02 s	C#	2015-07-12 15:05:22
9	Niklas Huss	0.02 s	C#	2015-07-28 21:06:26
10	grabarz	0.02 s	C#	2015-08-08 23:30:29

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-06-21 03:27:44
2	wibi	0.01 s	Common Lisp	2020-09-02 18:54:04

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2022-07-13 17:30:14
2	Patrick Bahr	0.04 s	F#	2021-02-21 14:21:37
3	Sebastian Sternberg	0.04 s	F#	2021-09-13 18:14:09

#	User	Runtime	Language	Date
1	Krzysztof Gibuła	0.02 s	Go	2019-02-16 12:50:12
2	Bruno Volpato	0.02 s	Go	2020-06-01 21:11:12
3	Zeheng Li	0.02 s	Go	2022-12-30 08:12:02
4	Alejandro Germain	0.07 s	Go	2018-10-10 13:42:06
5	Hidden user	0.07 s	Go	2018-11-01 06:23:58
6	Theo Coyne Morgan	0.07 s	Go	2019-03-26 22:04:17
7	Jonas Hedin	0.08 s	Go	2015-04-01 10:52:24
8	Kellen Watt	0.08 s	Go	2015-09-27 04:14:28
9	Charlie Egan	0.08 s	Go	2015-10-06 22:35:57
10	Adam Evans	0.08 s	Go	2015-10-09 19:20:39

#	User	Runtime	Language	Date
1	Anders Ye	0.05 s	Java	2014-02-20 17:23:33
2	Erik Odenman	0.05 s	Java	2014-02-20 17:25:16
3	Hidden user	0.05 s	Java	2014-03-28 22:08:04
4	Wilbur Yang	0.05 s	Java	2015-04-02 08:24:02
5	Marco Vincenzo Karaan	0.05 s	Java	2015-07-17 12:44:00
6	Nathaniel Lahn	0.05 s	Java	2015-08-10 03:36:22
7	Łukasz Antkowiak	0.05 s	Java	2015-09-12 00:21:15
8	Dennis Ang	0.05 s	Java	2015-09-13 07:59:02
9	Michael Sullivan	0.05 s	Java	2015-09-15 03:46:43
10	Hidden user	0.05 s	Java	2015-09-15 04:38:53

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-10-16 02:24:47
2	simon Lo	0.05 s	JavaScript (Node.js)	2019-03-25 23:29:24
3	Sander Hellesø	0.05 s	JavaScript (Node.js)	2019-04-26 06:58:12
4	Hidden user	0.05 s	JavaScript (Node.js)	2019-07-04 12:54:51
5	Hidden user	0.05 s	JavaScript (Node.js)	2024-08-31 17:53:34
6	John	0.42 s	JavaScript (Node.js)	2020-07-27 07:24:59
7	Hovhannes Kantuni	0.42 s	JavaScript (Node.js)	2020-08-24 03:09:52
8	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-03 05:44:35
9	jcjacky	0.42 s	JavaScript (Node.js)	2020-11-01 17:04:52
10	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-01-30 14:21:13

#	User	Runtime	Language	Date
1	Markus Nilssen	0.01 s	JavaScript (SpiderMonkey)	2015-09-19 10:46:55
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-18 00:27:50
3	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-11 13:09:03
4	Mark Bouchkevitch	0.01 s	JavaScript (SpiderMonkey)	2016-01-22 19:27:05
5	Gabriel Lau	0.01 s	JavaScript (SpiderMonkey)	2016-03-26 05:26:14
6	Timothy Chien	0.01 s	JavaScript (SpiderMonkey)	2016-07-25 04:43:00
7	Frédéric Morel	0.01 s	JavaScript (SpiderMonkey)	2016-10-14 01:37:06
8	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-28 14:01:19
9	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-11-14 17:01:53
10	Maryna Martynenko	0.01 s	JavaScript (SpiderMonkey)	2017-02-14 12:33:36

#	User	Runtime	Language	Date
1	Timothy Gaede	0.46 s	Julia	2024-04-01 20:19:22

#	User	Runtime	Language	Date
1	Dayan Ruben Gonzalez	0.14 s	Kotlin	2020-09-27 22:43:48
2	Jacob Huebner	0.16 s	Kotlin	2020-03-18 01:14:43
3	Adam Rankin	0.16 s	Kotlin	2023-05-04 21:42:54
4	Dmitry Shostak	0.17 s	Kotlin	2018-08-18 17:24:13
5	Sarek Høverstad Skotåm	0.17 s	Kotlin	2020-10-22 20:44:11
6	Troy Warmboe	0.17 s	Kotlin	2023-04-11 01:50:34
7	Neil Harmon	0.19 s	Kotlin	2019-04-04 09:20:55
8	Phường Lên	0.19 s	Kotlin	2019-11-07 05:04:13
9	Hidden user	0.20 s	Kotlin	2020-04-13 23:32:20
10	Guillaume Bailly	0.20 s	Kotlin	2020-04-16 20:18:24

#	User	Runtime	Language	Date
1	Shehab Ahmed Hatem	0.00 s	Lua	2023-11-14 15:26:17
2	Zeheng Li	0.00 s	Lua	2023-11-21 00:06:40

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-05-06 05:57:34

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2017-08-21 19:07:19
2	Ingemar Ragnemalm	0.00 s	Pascal	2018-01-14 21:47:58
3	Hoang Duong	0.00 s	Pascal	2018-03-29 19:23:54
4	Vova Podkorytov	0.00 s	Pascal	2018-08-05 09:33:02
5	5C24 Ng Shing Cheong 5C24 吳成昌	0.00 s	Pascal	2020-02-07 11:15:39

#	User	Runtime	Language	Date
1	Martin Dibakar Björling	0.01 s	PHP	2015-11-24 20:47:53
2	Silvena Lam	0.01 s	PHP	2016-02-03 12:52:12
3	Steven D. Wilson	0.01 s	PHP	2016-03-25 05:53:14
4	Ali Pandidan	0.01 s	PHP	2016-10-31 19:53:54
5	Mohammed Yousif	0.01 s	PHP	2018-05-03 15:43:01
6	Anderson Palmeira	0.01 s	PHP	2018-05-04 22:08:28
7	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-08 14:06:28
8	Renate	0.01 s	PHP	2021-05-19 00:30:08
9	Andre Wahyudi	0.01 s	PHP	2023-03-13 08:33:26

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.01 s	Prolog	2016-04-22 06:48:44
2	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-06 12:02:16
3	Andriy Zyevakov	0.03 s	Prolog	2017-07-27 23:42:55

#	User	Runtime	Language	Date
1	Paulo Bu	0.02 s	Python 2	2015-02-02 15:01:03
2	Kristmundur Agust	0.02 s	Python 2	2015-03-02 23:00:41
3	Christofer Ohlsson	0.02 s	Python 2	2015-04-02 21:43:55
4	Magnús Þór Benediktsson	0.02 s	Python 2	2015-05-14 17:37:27
5	Kit Maywood	0.02 s	Python 2	2015-06-09 17:30:28
6	Fredrik Carlsen	0.02 s	Python 2	2015-06-17 21:08:15
7	Nicole Hedblom	0.02 s	Python 2	2015-07-13 17:11:26
8	Tore Norderud	0.02 s	Python 2	2015-07-18 00:14:31
9	Snild Dolkow	0.02 s	Python 2	2015-09-12 15:51:28
10	Quan Huynh	0.02 s	Python 2	2015-09-14 13:48:49

#	User	Runtime	Language	Date
1	Axel Demborg	0.02 s	Python 3	2014-03-02 12:49:05
2	Brian Harrington	0.02 s	Python 3	2014-08-24 03:05:27
3	Hlynur “Glitch” Óskar Guðmundsson	0.02 s	Python 3	2015-03-02 23:37:21
4	Martin Stensgård	0.02 s	Python 3	2015-03-14 01:58:18
5	Nils Gustafsson	0.02 s	Python 3	2015-03-29 22:28:44
6	James Elías Sigurðarson	0.02 s	Python 3	2015-06-11 15:15:48
7	Johannes Agestam	0.02 s	Python 3	2015-06-15 00:39:06
8	Fredrik Carlsen	0.02 s	Python 3	2015-06-17 21:08:34
9	Tristan van Leeuwen	0.02 s	Python 3	2015-06-19 11:05:10
10	Baldur Tryggvason	0.02 s	Python 3	2015-07-20 00:19:25

#	User	Runtime	Language	Date
1	Jinwoo Lee	0.13 s	Racket	2025-01-31 07:09:42

#	User	Runtime	Language	Date
1	Charlie Egan	0.03 s	Ruby	2015-10-06 22:32:48
2	Gerry Hall	0.03 s	Ruby	2016-03-25 16:18:52
3	Lasse Berglund	0.03 s	Ruby	2016-03-28 15:55:46
4	Erik Rydbert	0.03 s	Ruby	2016-07-06 11:22:07
5	Hidden user	0.03 s	Ruby	2016-08-14 08:53:08
6	Martin Larsson	0.03 s	Ruby	2017-03-04 14:18:43
7	Erik Flood	0.03 s	Ruby	2017-05-13 21:12:17
8	Sonam Tenzin	0.03 s	Ruby	2017-07-10 06:43:39
9	Paul Vinell	0.04 s	Ruby	2018-04-23 12:24:46
10	Lee Tze Han	0.04 s	Ruby	2018-06-17 16:59:17

#	User	Length	Language	Date
1	Chenzhang Hu	41	Bash	2025-09-13 18:10:20
2	Danny Robinson	43	Bash	2023-09-05 17:47:57
3	Thomas Feld	43	Bash	2023-09-27 09:53:05

#	User	Length	Language	Date
1	Martin Blom	69	C	2024-01-31 14:30:39
2	a_b__c	75	C	2021-04-01 17:48:00
3	Alexander Bilde Pedersen	108	C	2023-02-16 22:50:51
4	Chong Tze Yan	118	C	2024-02-01 08:46:21
5	Jonatan Altebro	118	C	2025-02-18 17:05:02
6	Muhammed Ali Aytürk	148	C	2020-03-07 21:45:13
7	Hidden user	155	C	2014-11-01 19:50:46
8	Lawrence Li	157	C	2016-01-12 12:53:51
9	Hidden user	177	C	2016-09-16 13:14:50
10	Tenzin Chophel	184	C	2019-05-10 21:04:39

#	User	Length	Language	Date
1	Victor B	277	C#	2020-04-16 19:13:34
2	Alireza Nasrollahzadeh	311	C#	2018-06-13 23:38:45
3	Kunwei Zhang	317	C#	2018-02-06 05:55:52
4	Anthony Ye	323	C#	2024-01-07 19:49:47
5	Esty Crow	328	C#	2023-12-24 03:15:03
6	Thomas Norris	372	C#	2019-06-20 06:19:18
7	李陆屿	374	C#	2019-05-08 14:15:48
8	Göran Andersson	376	C#	2022-05-10 09:32:27
9	Shaun Lazaro	425	C#	2016-11-27 02:15:40
10	Ben-Richard Ebbesvik	436	C#	2023-12-29 16:33:41

#	User	Length	Language	Date
1	Taylor Rodríguez	98	C++	2025-01-18 20:37:34
2	Tyler Fernando	103	C++	2023-06-01 08:34:12
3	Felix Albrigtsen	122	C++	2018-06-10 09:36:37
4	Kjell Sundhaugen	150	C++	2018-06-10 10:51:34
5	Herman Karlsson	155	C++	2015-04-01 22:00:24
6	Bassam Alfarhan	162	C++	2015-11-08 05:03:39
7	Khawla Hbiech	168	C++	2019-05-09 05:06:17
8	Zhen Xu	169	C++	2017-04-16 17:58:48
9	Nguyễn Công Cường	169	C++	2019-08-03 21:32:50
10	Anathapindika Dravichi	172	C++	2020-12-17 04:13:37

#	User	Length	Language	Date
1	wibi	119	Common Lisp	2020-09-02 18:54:04
2	David Cawthon	362	Common Lisp	2020-06-21 03:27:44

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	266	F#	2022-07-13 17:30:14
2	Sebastian Sternberg	299	F#	2021-09-13 18:14:09
3	Patrick Bahr	1826	F#	2021-02-21 14:21:37

#	User	Length	Language	Date
1	Thomas Mailund	153	Go	2020-11-24 13:25:17
2	Zeheng Li	153	Go	2022-12-30 08:12:02
3	David Zacek	156	Go	2021-05-18 23:56:43
4	Hussein Al Abry	173	Go	2017-03-01 00:20:03
5	Theo Coyne Morgan	183	Go	2019-03-26 22:04:17
6	Wojtek Bednarzak	206	Go	2018-05-01 00:24:07
7	Nyamdavaa Amar	208	Go	2022-04-23 23:52:09
8	Kellen Watt	218	Go	2015-09-27 04:14:28
9	Kellen Watt	218	Go	2016-06-04 22:01:51
10	Jonas Hedin	248	Go	2015-04-01 10:52:24

#	User	Length	Language	Date
1	Christoffer Karlsson	164	Haskell	2017-01-28 20:43:15
2	Joakim Lundborg	167	Haskell	2015-09-04 00:03:50
3	Matthew Johnson	181	Haskell	2017-01-27 07:20:36
4	Brent Yorgey	187	Haskell	2017-10-08 02:09:39
5	Håkon Flatval	195	Haskell	2018-08-16 21:35:57
6	Lars Tveito	202	Haskell	2015-07-28 00:01:19
7	Marcos Barbieri	203	Haskell	2017-03-13 20:17:12
8	Fran Cruz Zamorano	212	Haskell	2017-06-01 16:06:51
9	Bryan Terce	213	Haskell	2020-11-23 09:21:20
10	Johannes Ljung Ekeroth	213	Haskell	2020-12-23 14:18:41

#	User	Length	Language	Date
1	Kinn Beredico	270	Java	2017-12-24 10:15:01
2	Ugyen Thinley	277	Java	2017-03-13 19:24:10
3	Soufian El Yadmani	278	Java	2016-08-07 11:58:09
4	Nanda Thant Sin	286	Java	2018-05-09 10:37:08
5	Nate Alden	287	Java	2020-01-20 03:34:43
6	Suraj Mukhia	288	Java	2018-05-15 09:50:24
7	Sabrina Mori	288	Java	2020-03-18 21:21:13
8	Arjun Sarki	291	Java	2017-03-13 17:06:01
9	Loubna Abbass	291	Java	2017-10-22 22:47:23
10	Era Shehu	297	Java	2020-02-18 20:52:01

#	User	Length	Language	Date
1	simon Lo	330	JavaScript (Node.js)	2019-03-25 23:29:24
2	Hidden user	361	JavaScript (Node.js)	2023-08-07 04:23:42
3	Hovhannes Kantuni	369	JavaScript (Node.js)	2020-08-24 03:09:52
4	jcjacky	389	JavaScript (Node.js)	2020-11-01 17:04:52
5	Hidden user	464	JavaScript (Node.js)	2024-10-16 02:24:47
6	Howard Tin Chi Chan	465	JavaScript (Node.js)	2021-01-30 14:21:13
7	Hidden user	626	JavaScript (Node.js)	2019-07-04 12:54:51
8	Khin Nyunt	724	JavaScript (Node.js)	2021-11-29 11:48:31
9	Sander Hellesø	735	JavaScript (Node.js)	2019-04-26 06:58:12
10	Andoko Chandra	747	JavaScript (Node.js)	2020-10-03 05:44:35

#	User	Length	Language	Date
1	Jimmy Gustafsson	60	JavaScript (SpiderMonkey)	2024-07-09 23:12:44
2	Christian Pilegaard Cederquist	63	JavaScript (SpiderMonkey)	2023-01-01 21:10:09
3	Evan Magill	110	JavaScript (SpiderMonkey)	2024-11-23 02:44:08
4	Tor Nordqvist	133	JavaScript (SpiderMonkey)	2016-11-14 17:01:53
5	Robin Livesey	155	JavaScript (SpiderMonkey)	2018-04-17 14:32:55
6	Tyler VanHaren	174	JavaScript (SpiderMonkey)	2022-06-05 09:43:07
7	Peter Menyes	186	JavaScript (SpiderMonkey)	2017-08-15 22:22:47
8	Mark Bouchkevitch	189	JavaScript (SpiderMonkey)	2016-01-22 19:27:05
9	Peter Kedemo	195	JavaScript (SpiderMonkey)	2015-12-18 00:27:50
10	Spencer Smith	195	JavaScript (SpiderMonkey)	2017-06-09 18:05:47

#	User	Length	Language	Date
1	Timothy Gaede	265	Julia	2024-04-01 20:19:22

#	User	Length	Language	Date
1	Troy Warmboe	187	Kotlin	2023-04-11 01:50:34
2	Dmitry Shostak	250	Kotlin	2018-08-18 17:24:13
3	Dayan Ruben Gonzalez	291	Kotlin	2020-09-27 22:43:48
4	Hidden user	328	Kotlin	2020-04-13 23:32:20
5	Adam Rankin	328	Kotlin	2023-05-04 21:42:54
6	Jacob Huebner	336	Kotlin	2020-03-18 01:14:43
7	Guillaume Bailly	409	Kotlin	2020-04-16 20:18:24
8	Phường Lên	434	Kotlin	2019-11-07 05:04:13
9	Neil Harmon	462	Kotlin	2019-04-04 09:20:55
10	Sarek Høverstad Skotåm	600	Kotlin	2020-10-22 20:44:11

#	User	Length	Language	Date
1	Zeheng Li	73	Lua	2023-11-21 00:06:40
2	Shehab Ahmed Hatem	235	Lua	2023-11-14 15:26:17

#	User	Length	Language	Date
1	Hidden user	433	Odin	2025-05-06 05:57:34

#	User	Length	Language	Date
1	Vova Podkorytov	247	Pascal	2018-08-05 09:33:02
2	5C24 Ng Shing Cheong 5C24 吳成昌	360	Pascal	2020-02-07 11:15:39
3	David Connolly	383	Pascal	2017-08-21 19:07:19
4	Ingemar Ragnemalm	420	Pascal	2018-01-14 21:47:58
5	Hoang Duong	463	Pascal	2018-03-29 19:23:54

#	User	Length	Language	Date
1	Ali Pandidan	154	PHP	2016-10-31 19:53:54
2	Silvena Lam	190	PHP	2016-02-03 12:52:12
3	Steven D. Wilson	193	PHP	2016-03-25 05:53:14
4	Jonas Lindenskov Nielsen	200	PHP	2019-10-08 14:11:04
5	Renate	255	PHP	2021-05-19 00:30:08
6	Anderson Palmeira	296	PHP	2018-05-04 22:08:28
7	Mohammed Yousif	312	PHP	2018-05-03 15:43:01
8	Andre Wahyudi	332	PHP	2023-03-13 08:33:26
9	Martin Dibakar Björling	413	PHP	2015-11-24 20:47:53

#	User	Length	Language	Date
1	Hakan Kjellerstrand	213	Prolog	2023-02-06 18:22:35
2	Andriy Zyevakov	591	Prolog	2017-07-27 23:42:55
3	Hadi Qovaizi	10106	Prolog	2016-04-22 06:48:44

#	User	Length	Language	Date
1	Thomas Feld	62	Python 2	2019-08-19 14:30:47
2	KALAJAYANTHI M	68	Python 2	2025-10-08 18:21:10
3	Eoin Davey	74	Python 2	2018-01-09 17:47:13
4	Nicole Hedblom	75	Python 2	2015-07-13 17:11:26
5	Jesper Öqvist	75	Python 2	2018-10-20 10:48:36
6	Victor Barbarosh	78	Python 2	2016-10-09 20:25:10
7	Marcus Johansson	79	Python 2	2016-09-24 10:11:23
8	Mateusz Drwal	80	Python 2	2018-02-03 15:56:55
9	Daryl Vogel	81	Python 2	2019-03-10 01:33:54
10	Guan Yang Ze	83	Python 2	2019-09-05 12:33:47

#	User	Length	Language	Date
1	Gustav Elmqvist	50	Python 3	2023-02-13 18:36:13
2	Charles Ancheta	50	Python 3	2023-03-28 08:04:07
3	Clement Oh	50	Python 3	2023-05-15 14:02:33
4	Chong Tze Yan	50	Python 3	2024-01-31 21:06:49
5	Nikolaj Munk Binder Jensen	50	Python 3	2025-02-10 21:25:24
6	Joke	50	Python 3	2025-02-18 14:30:58
7	Guk Yi Siong	52	Python 3	2023-06-13 10:29:29
8	Arnaud Vandaele	52	Python 3	2024-03-25 15:41:04
9	Harry Zhang	54	Python 3	2022-12-21 20:10:15
10	Adam Levav	54	Python 3	2023-01-25 01:42:00

#	User	Length	Language	Date
1	Jinwoo Lee	271	Racket	2025-01-31 07:09:42

#	User	Length	Language	Date
1	Thomas Feld	37	Ruby	2023-02-14 11:55:12
2	Gustav Elmqvist	38	Ruby	2023-02-14 01:24:44
3	Alexander Bilde Pedersen	48	Ruby	2023-02-17 03:13:18
4	Frederik Petersen	68	Ruby	2023-02-14 14:32:07
5	Régis Hanol	72	Ruby	2022-01-05 13:48:54
6	Hidden user	79	Ruby	2019-02-25 12:38:57
7	Eugen Neagoe	91	Ruby	2023-05-02 00:32:46
8	Gerry Hall	97	Ruby	2016-03-25 16:18:52
9	Abolfazl Gol	97	Ruby	2018-08-01 09:16:08
10	Charlie Egan	108	Ruby	2015-10-06 22:32:48

#	User	Length	Language	Date
1	Emil Dichmann	268	Rust	2025-09-17 09:43:36
2	Pankajkumar Patro	294	Rust	2024-07-24 22:20:57
3	Andreas Just Petersen	306	Rust	2023-02-14 15:14:30
4	Vincent Lagerros	308	Rust	2025-02-04 19:09:00
5	Thomas	316	Rust	2023-06-20 20:22:05
6	Hidden user	335	Rust	2019-05-04 22:15:09
7	Chaoyi Yin	343	Rust	2019-04-01 17:18:43
8	Joe Blower	349	Rust	2025-06-23 02:16:05
9	Raphaël Baulant	352	Rust	2021-03-08 11:10:30
10	Malthe Mathias Mølgaard Larsen	399	Rust	2023-02-14 11:51:20

Solution running time distribution