Problem A
The Key to Cryptography — Problem Statistics

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Submissions	4413
Accepted submissions	2387
Submission ratio	54.09%
Authors	2296
Full solves [?]	2136
Full solve Ratio	93.03%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.08 s	Bash	2024-04-16 15:17:11

#	User	Runtime	Language	Date
1	Jukka Paajanen	0.01 s	C#	2017-11-07 21:02:26
2	Mattias Mikkola	0.01 s	C#	2017-11-28 17:27:22
3	Ludwig Hedeby	0.01 s	C#	2017-11-29 17:44:49
4	Radoslav Naydenov	0.01 s	C#	2018-01-06 21:13:29
5	Johan Pettersson	0.01 s	C#	2018-02-09 09:17:18
6	Kunwei Zhang	0.01 s	C#	2018-02-12 04:39:48
7	Petra Lindell	0.01 s	C#	2018-02-15 16:33:28
8	Oscar Almström	0.02 s	C#	2017-11-04 16:19:28
9	Scott Killeen	0.02 s	C#	2017-11-07 17:36:16
10	Hidden user	0.02 s	C#	2017-11-10 16:49:14

#	User	Runtime	Language	Date
1	David Cawthon	0.02 s	Common Lisp	2019-06-09 04:12:00

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2022-07-12 09:37:39

#	User	Runtime	Language	Date
1	Andreas Lindström	0.08 s	Go	2017-12-22 14:38:10
2	Hidden user	0.08 s	Go	2019-10-24 16:30:49
3	Norbert Voelker	0.08 s	Go	2021-04-21 17:39:21
4	Krzysztof Gibuła	0.08 s	Go	2021-05-12 00:51:08

#	User	Runtime	Language	Date
1	Saad Ahmed	0.05 s	Java	2016-10-29 16:40:04
2	Finn Lidbetter	0.05 s	Java	2017-11-04 10:58:24
3	Nick Wu	0.05 s	Java	2017-11-04 18:07:35
4	Alyssa Herbst	0.05 s	Java	2017-11-04 18:18:03
5	Herbert Li	0.05 s	Java	2017-11-04 18:45:43
6	Ronald Cruz	0.05 s	Java	2017-11-04 19:27:48
7	Eimhin McDonald	0.05 s	Java	2017-11-04 19:37:37
8	Soh Jason	0.05 s	Java	2017-11-07 14:11:00
9	Dante Bencivenga	0.05 s	Java	2017-11-09 02:18:02
10	Ali Zarrini	0.05 s	Java	2017-11-10 23:03:56

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-12 04:14:02
2	Camilo Aparecido Ferri Moreira	0.05 s	JavaScript (Node.js)	2018-08-24 01:17:54
3	Marko Lazic	0.42 s	JavaScript (Node.js)	2020-09-17 14:50:27
4	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-11 13:34:04
5	Chris Wong	0.42 s	JavaScript (Node.js)	2021-02-16 23:29:28
6	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-18 23:31:24
7	John	0.42 s	JavaScript (Node.js)	2021-04-08 14:12:23

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2017-11-04 23:32:50
2	Andrea Bianchessi	0.01 s	JavaScript (SpiderMonkey)	2017-11-30 12:12:09
3	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-12-24 16:23:57
4	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-08-10 19:02:54
5	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-08 22:22:34
6	Evan Magill	0.02 s	JavaScript (SpiderMonkey)	2024-04-26 03:49:59
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-06-17 00:02:49

#	User	Runtime	Language	Date
1	Timothy Gaede	0.60 s	Julia	2024-05-11 05:37:55
2	Danny Robinson	0.64 s	Julia	2023-10-29 19:42:31

#	User	Runtime	Language	Date
1	Kiel Dowdle	0.12 s	Kotlin	2021-03-22 06:14:03
2	Nicholas Johnson	0.12 s	Kotlin	2021-03-30 06:09:30
3	Слава Гуляев	0.13 s	Kotlin	2017-11-06 01:42:06
4	Jacob Huebner	0.13 s	Kotlin	2021-04-11 09:15:11
5	Adam Rankin	0.16 s	Kotlin	2023-05-10 01:21:16
6	Hidden user	0.17 s	Kotlin	2017-11-25 00:56:54
7	Stefan Kennedy	0.17 s	Kotlin	2017-12-04 21:22:41
8	Filip de Figueiredo	0.17 s	Kotlin	2017-12-05 21:18:08
9	Laurens Groot	0.17 s	Kotlin	2017-12-14 16:52:35
10	Ellis Tsung	0.17 s	Kotlin	2018-10-25 02:36:43

#	User	Runtime	Language	Date
1	Brandon Tang	0.00 s	OCaml	2023-07-19 10:26:21
2	Hidden user	0.00 s	OCaml	2024-09-30 16:40:59
3	Gabriella Gloria	0.00 s	OCaml	2025-05-07 18:12:36

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-11-14 20:46:08
2	David Connolly	0.00 s	Pascal	2017-11-22 10:24:04

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-05-23 02:49:47
2	Andre Wahyudi	0.01 s	PHP	2023-03-15 03:26:45

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2017-12-13 20:36:37
2	Hakan Kjellerstrand	0.03 s	Prolog	2023-02-06 00:42:58

#	User	Runtime	Language	Date
1	Andrew Maczugowski	0.02 s	Python 2	2017-11-04 18:13:57
2	Daniel Moyer	0.02 s	Python 2	2017-11-04 18:17:04
3	Jeff Robertson	0.02 s	Python 2	2017-11-04 18:31:17
4	Çağdaş Öztekin	0.02 s	Python 2	2017-11-05 15:58:36
5	Katherine Buhler	0.02 s	Python 2	2017-11-17 05:41:07
6	Johan Niklasson	0.02 s	Python 2	2017-11-23 10:41:45
7	Peter Sofronas	0.02 s	Python 2	2017-11-26 03:24:48
8	Andrei Stoica	0.02 s	Python 2	2017-11-29 22:03:09
9	Maksym Bendeberia	0.02 s	Python 2	2017-12-01 15:18:48
10	Hilmir Straumland	0.02 s	Python 2	2017-12-02 17:38:08

#	User	Runtime	Language	Date
1	Steven Duvall	0.02 s	Python 3	2016-12-08 07:06:43
2	Shichun Xuan	0.02 s	Python 3	2017-09-30 23:22:20
3	Rick May	0.02 s	Python 3	2017-11-04 06:21:34
4	Alexei Fedotov	0.02 s	Python 3	2017-11-04 07:18:06
5	Shawn Mathew	0.02 s	Python 3	2017-11-04 18:26:30
6	Martin Tran	0.02 s	Python 3	2017-11-04 19:38:19
7	Amanpreet Singh	0.02 s	Python 3	2017-11-04 19:44:52
8	Keyur Shah	0.02 s	Python 3	2017-11-04 19:49:28
9	Hansel Qiu	0.02 s	Python 3	2017-11-04 19:58:50
10	Zachary Lau	0.02 s	Python 3	2017-11-04 20:32:14

#	User	Runtime	Language	Date
1	Jinwoo Lee	0.13 s	Racket	2025-02-02 02:55:09

#	User	Runtime	Language	Date
1	Savvas Alexandrou	0.04 s	Ruby	2018-12-12 08:59:13
2	Hidden user	0.04 s	Ruby	2019-02-26 11:34:51
3	Thomas Feld	0.06 s	Ruby	2022-11-14 09:40:42
4	Noah Hessen Bjerke	0.06 s	Ruby	2022-12-06 13:20:36
5	Robert Haines	0.07 s	Ruby	2024-04-13 17:39:48

#	User	Runtime	Language	Date
1	Anton J Olsson	0.09 s	TypeScript	2023-08-23 14:03:19

#	User	Length	Language	Date
1	Chenzhang Hu	1588	Bash	2024-04-16 15:17:11

#	User	Length	Language	Date
1	Martin Blom	198	C	2023-12-30 00:00:53
2	Matthew Weston	388	C	2022-01-19 15:25:54
3	Kaixin Luo	443	C	2017-09-30 23:27:07
4	Bryan Heryanto	474	C	2019-09-02 14:34:24
5	Thomas	476	C	2018-08-23 12:19:20
6	Sebastian Oveland	485	C	2019-12-10 14:33:58
7	Olav Røthe Bakken	492	C	2017-11-17 16:43:03
8	Emil Wihlander	495	C	2020-12-07 22:16:29
9	紅茶	495	C	2023-08-28 16:03:48
10	PhilCampbell	498	C	2021-01-08 17:10:03

#	User	Length	Language	Date
1	Gregory Sinclair	232	C#	2023-11-09 05:12:11
2	Anthony Ye	315	C#	2023-11-12 18:49:09
3	Esty Crow	370	C#	2023-11-11 15:57:15
4	traxex	434	C#	2024-05-07 15:17:51
5	Göran Andersson	436	C#	2022-05-13 00:36:11
6	Liam Percy	463	C#	2018-06-15 22:29:04
7	Thomas Norris	482	C#	2019-09-27 21:36:18
8	Kunwei Zhang	494	C#	2018-02-12 04:39:48
9	Armin Krauss	593	C#	2018-11-09 11:15:13
10	Jukka Paajanen	775	C#	2017-11-07 21:02:26

#	User	Length	Language	Date
1	Tyler Fernando	178	C++	2022-10-27 06:35:24
2	Đậu Huy Minh	222	C++	2022-11-12 05:24:27
3	林君彥	227	C++	2024-08-10 06:00:34
4	Yeung Man Tsung	228	C++	2022-12-30 08:01:40
5	Nguyễn Nhật Minh	234	C++	2024-03-27 03:51:41
6	Đoàn Công Chính	236	C++	2018-02-03 07:49:52
7	Oskar Strömberg	239	C++	2020-10-30 17:22:55
8	Frederick Pek	241	C++	2021-06-04 11:02:26
9	高一3薛年成	244	C++	2022-12-25 02:28:03
10	justin LI	244	C++	2025-09-03 15:11:18

#	User	Length	Language	Date
1	David Cawthon	919	Common Lisp	2019-06-09 04:12:00

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	941	F#	2022-07-12 09:37:39

#	User	Length	Language	Date
1	Andreas Lindström	379	Go	2017-12-22 14:38:10
2	Norbert Voelker	512	Go	2021-04-21 17:39:21
3	Hidden user	531	Go	2019-10-24 16:30:49
4	Krzysztof Gibuła	655	Go	2021-05-12 00:52:18

#	User	Length	Language	Date
1	Rudy Matela	140	Haskell	2024-04-23 18:10:50
2	Sebastian Banert	186	Haskell	2024-06-14 09:10:52
3	Håkon Flatval	260	Haskell	2018-08-30 02:21:17
4	Steinar Simonnes	281	Haskell	2024-01-24 13:18:38
5	Tim Put	282	Haskell	2021-06-02 22:20:17
6	Brent Yorgey	342	Haskell	2017-11-04 03:07:49
7	Øyvind Almli	367	Haskell	2021-11-18 21:56:35
8	Tobias Glimmerfors	392	Haskell	2020-01-26 11:36:08
9	Jan Hrček	416	Haskell	2020-11-08 13:46:27
10	Asbjørn Olav Orvedal	440	Haskell	2022-11-15 22:25:40

#	User	Length	Language	Date
1	Ariana Herbst	377	Java	2017-11-04 18:11:17
2	Joshua Navarro	404	Java	2022-02-17 20:32:20
3	Hayley Russell	412	Java	2017-12-16 02:49:44
4	Leo Wang	431	Java	2018-10-25 02:14:45
5	Justin Turner	432	Java	2018-01-19 15:40:13
6	Russell Rivard	443	Java	2022-02-17 20:21:53
7	Hoàng Minh	446	Java	2018-10-27 21:11:58
8	Carter Henderson	458	Java	2022-01-31 18:23:21
9	Malte Larsson	464	Java	2018-10-26 10:33:49
10	Nicholas Bui	472	Java	2020-05-06 03:59:24

#	User	Length	Language	Date
1	Howard Tin Chi Chan	782	JavaScript (Node.js)	2021-02-18 23:31:24
2	Chris Wong	787	JavaScript (Node.js)	2021-02-16 23:29:28
3	Andoko Chandra	828	JavaScript (Node.js)	2020-10-11 13:34:04
4	Hidden user	865	JavaScript (Node.js)	2024-09-12 04:14:02
5	Marko Lazic	1033	JavaScript (Node.js)	2020-09-17 14:50:27
6	Camilo Aparecido Ferri Moreira	1068	JavaScript (Node.js)	2018-08-24 01:17:54
7	John	1162	JavaScript (Node.js)	2021-04-08 14:12:23

#	User	Length	Language	Date
1	Jimmy Gustafsson	150	JavaScript (SpiderMonkey)	2024-06-17 00:02:49
2	Evan Magill	198	JavaScript (SpiderMonkey)	2024-04-26 03:52:39
3	Bjørn Chr. Soltvedt	316	JavaScript (SpiderMonkey)	2017-11-04 23:32:50
4	Christian Cederquist	334	JavaScript (SpiderMonkey)	2023-01-08 22:22:34
5	Peter Menyes	375	JavaScript (SpiderMonkey)	2021-08-10 19:02:54
6	Andrea Bianchessi	511	JavaScript (SpiderMonkey)	2017-11-30 12:12:09
7	Nicklas Utgaard	635	JavaScript (SpiderMonkey)	2017-12-24 16:23:57

#	User	Length	Language	Date
1	Danny Robinson	104	Julia	2023-10-29 19:42:31
2	Timothy Gaede	422	Julia	2024-05-11 05:37:55

#	User	Length	Language	Date
1	Laurens Groot	294	Kotlin	2017-12-14 16:52:35
2	Jahid Hasan Imon	329	Kotlin	2020-05-13 19:06:58
3	Einar Kjellback	336	Kotlin	2019-12-09 15:53:22
4	Jacob Huebner	448	Kotlin	2021-04-11 09:15:11
5	Hidden user	483	Kotlin	2017-11-25 00:56:54
6	Filip de Figueiredo	533	Kotlin	2017-12-05 21:18:08
7	Adam Rankin	616	Kotlin	2023-05-10 01:21:16
8	Ellis Tsung	622	Kotlin	2018-10-25 02:36:43
9	Gaurav Tyagi	631	Kotlin	2018-08-13 18:11:11
10	Troy Warmboe	656	Kotlin	2020-02-11 00:47:23

#	User	Length	Language	Date
1	Hidden user	459	OCaml	2024-09-30 16:40:59
2	Brandon Tang	1123	OCaml	2023-07-19 10:26:21
3	Gabriella Gloria	1156	OCaml	2025-05-07 18:12:36

#	User	Length	Language	Date
1	Ingemar Ragnemalm	317	Pascal	2017-11-14 20:46:08
2	David Connolly	691	Pascal	2017-11-22 10:24:04

#	User	Length	Language	Date
1	Renate	345	PHP	2021-05-23 02:49:47
2	Andre Wahyudi	800	PHP	2023-03-15 03:26:45

#	User	Length	Language	Date
1	Hakan Kjellerstrand	221	Prolog	2023-02-06 06:41:08
2	Andriy Zyevakov	656	Prolog	2017-12-13 20:36:37

#	User	Length	Language	Date
1	William Gan	151	Python 2	2017-12-18 14:12:06
2	Eoin Davey	160	Python 2	2017-12-29 00:58:12
3	Thomas Feld	162	Python 2	2019-09-02 12:35:05
4	Andreas Björklund	168	Python 2	2021-03-27 17:02:05
5	Jason Pham	211	Python 2	2018-11-04 18:21:14
6	Lim Hong Hui Eugene	218	Python 2	2018-05-02 07:34:05
7	Fan Zhang	221	Python 2	2017-11-13 04:00:15
8	Johan Lyts	242	Python 2	2019-07-02 14:17:10
9	Sigurður Jens Albertsson	262	Python 2	2017-12-29 21:00:28
10	Lars Åström	266	Python 2	2018-10-26 10:13:04

#	User	Length	Language	Date
1	Ahmed Chamseddine	97	Python 3	2024-07-25 18:22:13
2	Harry Zhang	99	Python 3	2022-12-20 11:04:46
3	Hugo Morvan	108	Python 3	2022-11-27 01:26:22
4	Christofer Ohlsson	109	Python 3	2022-09-24 13:20:55
5	Morten Clausen	110	Python 3	2022-10-30 22:56:43
6	Lasse Letager Hansen	111	Python 3	2023-11-22 13:08:08
7	Tistou	112	Python 3	2021-11-15 15:58:20
8	Shashank Bhatt	114	Python 3	2024-06-12 16:48:25
9	Josh Henderson	116	Python 3	2022-12-01 19:38:35
10	John Hershey	116	Python 3	2024-09-20 07:30:42

#	User	Length	Language	Date
1	Jinwoo Lee	823	Racket	2025-02-02 02:55:09

#	User	Length	Language	Date
1	Thomas Feld	74	Ruby	2022-11-14 09:40:42
2	Noah Hessen Bjerke	171	Ruby	2022-12-06 13:20:36
3	Hidden user	288	Ruby	2019-02-26 11:34:51
4	Savvas Alexandrou	509	Ruby	2018-12-12 08:59:13
5	Robert Haines	665	Ruby	2024-04-13 17:39:48

#	User	Length	Language	Date
1	Vincent Lagerros	512	Rust	2025-01-17 10:37:30
2	Kok Dith	677	Rust	2021-08-05 04:00:22
3	Emil Skydsgaard	713	Rust	2022-07-14 17:28:09
4	Pankajkumar Patro	758	Rust	2024-12-29 17:30:34
5	Hovig Manjikian	813	Rust	2020-01-10 20:58:32
6	Bas Dirks	883	Rust	2022-01-30 08:40:21
7	David Zacek	1011	Rust	2021-05-19 01:43:15
8	Eric Pinter	1156	Rust	2021-08-01 23:04:57
9	Hidden user	1198	Rust	2021-02-23 12:12:25
10	Garrett Rowe	1405	Rust	2022-05-29 20:41:32

#	User	Length	Language	Date
1	Anton J Olsson	1041	TypeScript	2023-08-23 14:03:19

Solution running time distribution