Problem A
Tajna — Problem Statistics

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Submissions	2646
Accepted submissions	1370
Submission ratio	51.78%
Authors	1265
Full solves [?]	1167
Full solve Ratio	92.25%

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Ada	2024-10-18 22:16:26

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Bash	2023-11-14 15:36:47

#	User	Runtime	Language	Date
1	masosz	0.01 s	C#	2015-04-20 19:53:47
2	Raja Sanjeev Kumar Nakka	0.01 s	C#	2016-06-15 18:11:42
3	Robert Low	0.01 s	C#	2016-07-17 16:54:42
4	Ugnius Skučas	0.01 s	C#	2016-10-17 23:36:15
5	Andriy Zyevakov	0.02 s	C#	2015-10-27 11:00:12
6	Faisal Rahman	0.02 s	C#	2016-01-15 00:32:02
7	Andrzej Krajniak	0.02 s	C#	2017-09-13 17:13:47
8	Liam Percy	0.02 s	C#	2018-06-01 21:43:38
9	Sebastian Garcia	0.02 s	C#	2019-02-15 23:28:37
10	Tom Ilestrand	0.02 s	C#	2019-02-27 18:25:04

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-07-01 04:51:43

#	User	Runtime	Language	Date
1	Patrick Bahr	0.04 s	F#	2021-02-26 16:55:27
2	Jacob Harris Cryer Kragh	0.04 s	F#	2022-11-20 09:33:35
3	dix	0.08 s	F#	2024-11-12 18:38:59

#	User	Runtime	Language	Date
1	Krzysztof Gibuła	0.07 s	Go	2019-03-05 00:15:59
2	Aleksandar Mitic	0.08 s	Go	2016-12-23 21:48:36
3	Norbert Voelker	0.08 s	Go	2021-06-12 20:37:18

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2015-01-10 13:16:45
2	Brent Yorgey	0.00 s	Haskell	2017-10-24 13:09:55
3	Li Jun	0.00 s	Haskell	2023-07-03 13:51:10
4	Giorgio Sorgente	0.00 s	Haskell	2026-02-11 21:31:39
5	Tobias Bengtsson	0.01 s	Haskell	2018-11-18 09:14:27
6	Hidden user	0.01 s	Haskell	2019-09-26 17:22:12
7	Gaston Gilbert	0.01 s	Haskell	2020-11-01 17:59:04
8	Jan Hrček	0.01 s	Haskell	2021-04-09 05:40:43

#	User	Runtime	Language	Date
1	Mark Meysenburg	0.04 s	Java	2025-05-09 15:42:35
2	Serena Davis	0.04 s	Java	2025-09-17 01:03:03
3	Alexander Matheson	0.04 s	Java	2025-09-17 01:27:12
4	Amy Colpitts	0.04 s	Java	2025-09-17 02:40:46
5	Jens Ståhl	0.05 s	Java	2014-05-08 19:15:16
6	Linda Hansson	0.05 s	Java	2015-09-12 20:53:18
7	Pål Forsberg	0.05 s	Java	2015-10-01 12:35:58
8	Michel Langeveld	0.05 s	Java	2015-12-06 21:43:21
9	Dennis Shi	0.05 s	Java	2015-12-15 03:51:26
10	Michael Sullivan	0.05 s	Java	2016-01-18 09:58:04

#	User	Runtime	Language	Date
1	gigi	0.42 s	JavaScript (Node.js)	2022-03-30 00:08:14
2	Giovani de SOUZA	0.42 s	JavaScript (Node.js)	2022-03-30 00:09:47

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-02-22 00:35:53
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-05-31 21:00:56
3	Paul Leung	0.01 s	JavaScript (SpiderMonkey)	2017-05-31 14:21:13
4	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-11-07 14:59:02
5	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-29 15:47:40
6	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-25 23:08:01
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-26 23:21:17

#	User	Runtime	Language	Date
1	Timothy Gaede	0.48 s	Julia	2024-04-07 08:46:10
2	Danny Robinson	0.53 s	Julia	2023-09-10 17:08:13
3	Elijah Spicer	0.75 s	Julia	2023-05-10 22:12:46

#	User	Runtime	Language	Date
1	Johnny Baloney	0.11 s	Kotlin	2021-12-08 21:17:42
2	Jacob Huebner	0.14 s	Kotlin	2022-03-03 06:23:06
3	Peter Mikkelsen	0.17 s	Kotlin	2020-07-09 21:19:52
4	Neil Harmon	0.19 s	Kotlin	2019-07-03 10:13:36
5	Adam Rankin	0.19 s	Kotlin	2023-08-30 05:58:24
6	Colin Gay	0.23 s	Kotlin	2019-05-25 04:07:49

#	User	Runtime	Language	Date
1	Artemis Ngoh	0.00 s	OCaml	2024-04-03 18:40:10

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-08-18 22:31:17
2	David Connolly	0.00 s	Pascal	2021-12-03 13:11:12

#	User	Runtime	Language	Date
1	Zaw Phyo	0.01 s	PHP	2023-04-28 03:22:28

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.03 s	Prolog	2023-03-04 08:04:38

#	User	Runtime	Language	Date
1	Javier Andión	0.02 s	Python 2	2015-03-12 17:51:03
2	Paulo Bu	0.02 s	Python 2	2015-04-07 10:43:47
3	Christofer Ohlsson	0.02 s	Python 2	2015-05-12 21:18:17
4	Konrad Dryja	0.02 s	Python 2	2015-11-17 15:09:34
5	Neal Zane	0.02 s	Python 2	2015-12-04 06:46:43
6	Matas Kairaitis	0.02 s	Python 2	2016-05-21 15:43:54
7	Erik Sillén	0.02 s	Python 2	2016-05-23 17:20:04
8	Hasan Ramezani	0.02 s	Python 2	2016-07-27 17:59:49
9	Maksym Bendeberia	0.02 s	Python 2	2016-08-29 14:58:41
10	Tiezheng Li	0.02 s	Python 2	2016-11-12 20:42:14

#	User	Runtime	Language	Date
1	Sasa	0.02 s	Python 3	2015-09-13 15:44:15
2	Danijel Sic	0.02 s	Python 3	2015-11-21 13:57:19
3	Wayne	0.02 s	Python 3	2016-02-05 21:35:11
4	Lucia Pál (Simanová)	0.02 s	Python 3	2016-06-13 00:53:27
5	Hidden user	0.02 s	Python 3	2016-08-09 16:32:43
6	David Ludwig	0.02 s	Python 3	2016-10-01 03:14:11
7	Christopher Clouse	0.02 s	Python 3	2016-10-07 23:42:47
8	Stephen Strickland	0.02 s	Python 3	2016-10-13 05:14:28
9	Josenildo Silva	0.02 s	Python 3	2016-11-15 17:02:17
10	Win Htet Aung	0.02 s	Python 3	2016-11-20 11:22:05

#	User	Runtime	Language	Date
1	Shayon Mukherjee	0.03 s	Ruby	2016-03-12 23:31:01
2	Hidden user	0.03 s	Ruby	2017-05-10 22:42:18
3	Matthew Clemons	0.03 s	Ruby	2017-06-09 03:47:30
4	Oleg Smelov	0.04 s	Ruby	2019-02-23 22:00:23
5	Hidden user	0.04 s	Ruby	2019-11-27 14:21:47
6	Thomas Feld	0.06 s	Ruby	2023-01-31 09:46:08

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-01-07 09:53:17
2	Freek van Keulen	0.00 s	Rust	2023-10-14 08:47:21
3	Juan Andres Moreno	0.00 s	Rust	2023-11-17 07:49:56
4	Isak Jägberg	0.00 s	Rust	2024-11-04 09:40:11
5	Philip Cramer	0.00 s	Rust	2025-02-23 20:41:40

#	User	Length	Language	Date
1	Sebastian Banert	338	Ada	2024-10-18 22:16:26

#	User	Length	Language	Date
1	Chenzhang Hu	802	Bash	2023-11-14 15:36:47

#	User	Length	Language	Date
1	test	341	C	2025-02-27 19:09:14
2	Thor Eriksen	348	C	2022-09-20 16:35:20
3	Mouad Naciri	363	C	2017-03-31 12:22:34
4	Julian Duniec	370	C	2023-08-26 20:41:42
5	Wouter van Veelen	371	C	2015-11-16 06:17:42
6	a_b__c	415	C	2021-01-31 18:22:21
7	Moussaid Yassine	420	C	2016-10-18 01:53:20
8	徐緯倫	460	C	2023-10-24 03:38:00
9	Matthew Hartono	509	C	2022-10-24 13:28:01
10	Tomás A. Pérez Fernandez	523	C	2018-09-11 22:33:01

#	User	Length	Language	Date
1	traxex	334	C#	2024-03-25 15:36:37
2	Göran Andersson	382	C#	2022-05-21 02:19:08
3	Sebastian Garcia	514	C#	2019-02-15 23:28:37
4	Leslie Yip	552	C#	2022-09-11 17:53:04
5	Robert Low	565	C#	2016-07-17 16:54:42
6	Mark Meysenburg	619	C#	2025-05-09 16:24:39
7	Tom Ilestrand	688	C#	2019-02-27 18:25:04
8	Liam Percy	787	C#	2018-06-01 21:43:38
9	Elijah	825	C#	2023-04-03 22:13:08
10	Krzysztof Magda	908	C#	2023-08-28 21:53:19

#	User	Length	Language	Date
1	Tyler Fernando	171	C++	2023-06-26 05:10:48
2	Frans Meulenbroeks	183	C++	2024-10-06 16:57:43
3	Richard Putra	216	C++	2018-02-20 09:40:34
4	Herman Karlsson	239	C++	2015-06-07 18:19:35
5	Antonio Molina Lovett	239	C++	2016-08-07 10:43:06
6	Hidden user	241	C++	2020-02-01 20:48:43
7	Đoàn Công Chính	251	C++	2018-01-17 22:31:13
8	Zane Yu	258	C++	2018-12-11 13:26:24
9	Jun Yan	267	C++	2023-10-18 10:21:00
10	Calin Mihaescu	273	C++	2024-10-08 08:15:51

#	User	Length	Language	Date
1	David Cawthon	663	Common Lisp	2020-07-01 04:51:43

#	User	Length	Language	Date
1	dix	643	F#	2024-11-12 18:38:59
2	Jacob Harris Cryer Kragh	847	F#	2022-11-20 09:33:35
3	Patrick Bahr	2047	F#	2021-02-26 16:55:27

#	User	Length	Language	Date
1	Krzysztof Gibuła	470	Go	2019-03-05 00:15:59
2	Norbert Voelker	593	Go	2021-06-12 20:37:18
3	Aleksandar Mitic	678	Go	2016-12-23 21:48:36

#	User	Length	Language	Date
1	Li Jun	404	Haskell	2023-07-03 13:51:10
2	Giorgio Sorgente	423	Haskell	2026-02-11 21:31:39
3	Brent Yorgey	448	Haskell	2017-10-24 13:09:55
4	Jan Hrček	603	Haskell	2021-04-09 05:40:43
5	Tobias Bengtsson	697	Haskell	2018-11-18 09:14:27
6	Gaston Gilbert	1248	Haskell	2020-11-01 17:59:04
7	Hidden user	2443	Haskell	2015-01-10 13:16:45
8	Hidden user	4612	Haskell	2019-09-26 17:22:12

#	User	Length	Language	Date
1	Natalie Axelsson	413	Java	2017-06-10 16:40:55
2	Doug Goodman	423	Java	2018-05-19 16:04:10
3	Soldà Federico	469	Java	2019-08-08 23:46:18
4	Erik Baalhuis	496	Java	2015-09-15 21:33:03
5	Eric Leow Yu Quan	496	Java	2020-12-18 07:37:27
6	Jonas Klausen	508	Java	2022-09-20 16:44:39
7	Frank Ruskey	531	Java	2017-11-24 22:05:23
8	Stephen Atwood	544	Java	2017-03-05 22:55:16
9	Mitch Price	555	Java	2017-03-05 23:43:53
10	Qritel Abdelilah	573	Java	2017-12-31 16:06:53

#	User	Length	Language	Date
1	gigi	1529	JavaScript (Node.js)	2022-03-30 00:08:14
2	Giovani de SOUZA	1529	JavaScript (Node.js)	2022-03-30 00:09:47

#	User	Length	Language	Date
1	Jimmy Gustafsson	116	JavaScript (SpiderMonkey)	2024-07-26 23:22:23
2	Peter Menyes	341	JavaScript (SpiderMonkey)	2021-11-07 14:59:02
3	Christian Pilegaard Cederquist	345	JavaScript (SpiderMonkey)	2023-01-29 15:47:40
4	Zach Tschetter	368	JavaScript (SpiderMonkey)	2023-06-25 23:08:01
5	Peter Kedemo	403	JavaScript (SpiderMonkey)	2016-05-31 21:00:56
6	Paul Leung	559	JavaScript (SpiderMonkey)	2017-05-31 14:21:13
7	Bjørn Chr. Soltvedt	1061	JavaScript (SpiderMonkey)	2016-02-22 00:35:53

#	User	Length	Language	Date
1	Danny Robinson	102	Julia	2023-09-10 17:08:13
2	Elijah Spicer	569	Julia	2023-05-10 22:12:46
3	Timothy Gaede	745	Julia	2024-04-07 08:46:10

#	User	Length	Language	Date
1	Adam Rankin	395	Kotlin	2023-08-30 05:58:24
2	Jacob Huebner	431	Kotlin	2022-03-03 06:23:06
3	Peter Mikkelsen	434	Kotlin	2020-07-09 21:19:52
4	Colin Gay	784	Kotlin	2019-05-25 04:07:49
5	Johnny Baloney	961	Kotlin	2021-12-08 21:17:42
6	Neil Harmon	1136	Kotlin	2019-07-03 10:13:36

#	User	Length	Language	Date
1	Artemis Ngoh	616	OCaml	2024-04-03 18:40:10

#	User	Length	Language	Date
1	David Connolly	610	Pascal	2021-12-03 13:11:12
2	Ingemar Ragnemalm	880	Pascal	2018-08-18 22:31:17

#	User	Length	Language	Date
1	Zaw Phyo	447	PHP	2023-04-28 03:22:28

#	User	Length	Language	Date
1	Hakan Kjellerstrand	496	Prolog	2023-03-04 08:04:38

#	User	Length	Language	Date
1	Thomas Feld	130	Python 2	2019-09-11 15:47:57
2	Javier Andión	194	Python 2	2015-03-12 17:51:03
3	Neal Zane	194	Python 2	2015-12-04 06:46:43
4	Paulo Bu	203	Python 2	2015-04-07 10:43:47
5	Badr Kamel	204	Python 2	2020-05-01 01:34:02
6	Matt Bonsall	205	Python 2	2017-03-05 23:32:33
7	Hidden user	208	Python 2	2018-01-05 07:22:03
8	Andreas Björklund	213	Python 2	2019-11-30 11:01:33
9	Tiezheng Li	217	Python 2	2016-11-12 20:42:14
10	Sebastian Weiermann	219	Python 2	2017-04-01 13:34:57

#	User	Length	Language	Date
1	Oskar Haarklou Veileborg	100	Python 3	2021-02-28 21:23:28
2	Shashank Bhatt	102	Python 3	2024-08-27 18:25:29
3	Benjamin Z White	105	Python 3	2023-04-04 21:55:54
4	Karen Birgitta Hanssen	109	Python 3	2023-12-14 17:41:36
5	Hrant Hovhannisyan	121	Python 3	2025-03-18 07:12:16
6	Tai Tze Kin	126	Python 3	2024-05-06 11:00:36
7	Noah Hessen Bjerke	138	Python 3	2023-12-08 14:29:23
8	Si Jie Tan	139	Python 3	2026-01-15 05:39:05
9	Suus Brommer	150	Python 3	2024-02-27 20:44:50
10	Bjørn Dons	151	Python 3	2018-10-21 07:14:25

#	User	Length	Language	Date
1	Thomas Feld	91	Ruby	2023-01-31 10:06:55
2	Hidden user	163	Ruby	2019-11-27 14:21:47
3	Oleg Smelov	255	Ruby	2019-02-23 22:00:23
4	Shayon Mukherjee	424	Ruby	2016-03-12 23:34:48
5	Matthew Clemons	498	Ruby	2017-06-09 03:47:30
6	Hidden user	521	Ruby	2017-05-10 22:42:18

#	User	Length	Language	Date
1	Juan Andres Moreno	454	Rust	2023-11-17 07:49:56
2	Philip Cramer	700	Rust	2025-02-23 20:41:40
3	Freek van Keulen	723	Rust	2023-10-14 08:47:21
4	Bas Dirks	1096	Rust	2022-01-07 09:53:17
5	Isak Jägberg	1359	Rust	2024-11-04 09:40:11

Solution running time distribution