Problem A
Code Guessing — Problem Statistics

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Submissions	3464
Accepted submissions	860
Submission ratio	24.83%
Authors	939
Full solves [?]	767
Full solve Ratio	81.68%

#	User	Runtime	Language	Date
1	Mikael Fiala-Lundström	0.02 s	C#	2022-03-03 03:10:08
2	Henrik Hallbert	0.02 s	C#	2022-03-24 13:23:43
3	Eric Weiss	0.02 s	C#	2022-09-12 21:53:40
4	Koen Timmermans	0.02 s	C#	2022-09-14 16:36:59
5	Frank Tabak	0.02 s	C#	2022-09-14 16:39:17
6	Erik van Holland	0.02 s	C#	2022-09-14 16:40:42
7	Mihai Spătariu	0.02 s	C#	2022-09-14 16:50:29
8	Laurens Fijn van Draat	0.02 s	C#	2022-09-14 16:51:20
9	Cynthia Luijkx	0.02 s	C#	2022-09-14 16:51:21
10	Joop van der Heiden	0.02 s	C#	2022-09-14 16:52:04

#	User	Runtime	Language	Date
1	Gaelan McMillan	0.00 s	Common Lisp	2022-10-22 01:17:28

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2023-04-06 13:13:32

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Go	2022-11-02 09:15:22
2	Michael Johansson	0.02 s	Go	2022-11-22 17:40:01
3	Norbert Voelker	0.08 s	Go	2022-03-18 23:37:48

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.00 s	Haskell	2024-12-29 17:28:12
2	Brent Yorgey	0.01 s	Haskell	2022-02-27 22:56:41

#	User	Runtime	Language	Date
1	Crystal Sharpe	0.06 s	Java	2022-03-03 00:42:32
2	Sven Rönnbäck	0.06 s	Java	2022-03-20 09:43:45
3	Bowen Yang	0.06 s	Java	2022-04-11 05:11:15
4	Tjibbe van der Veen	0.06 s	Java	2022-09-14 16:45:58
5	Keesha Go	0.06 s	Java	2025-11-06 15:12:04
6	Markus Bao	0.07 s	Java	2025-10-29 22:29:33
7	Peter Li	0.08 s	Java	2022-03-01 21:57:00
8	Ryan Tan	0.08 s	Java	2022-06-03 19:22:09
9	test1	0.09 s	Java	2022-11-04 01:28:41
10	Saketh Ganji	0.09 s	Java	2022-11-04 01:31:06

#	User	Runtime	Language	Date
1	Minh Trang Nguyen	0.04 s	JavaScript (Node.js)	2025-12-12 17:37:03
2	Ram Basnet	0.42 s	JavaScript (Node.js)	2022-03-07 07:28:20

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2022-03-01 22:50:42
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-01 00:21:03

#	User	Runtime	Language	Date
1	Timothy Gaede	0.55 s	Julia	2024-06-23 07:59:50

#	User	Runtime	Language	Date
1	Jacob Huebner	0.13 s	Kotlin	2022-02-28 03:14:13
2	Benjamin Laurence Erickson	0.17 s	Kotlin	2022-11-09 00:14:00
3	Adam Rankin	0.22 s	Kotlin	2023-09-28 06:34:33

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2025-12-03 07:09:34

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.03 s	Python 2	2022-03-15 11:14:33

#	User	Runtime	Language	Date
1	Erik Dyrelius	0.04 s	Python 3	2022-06-09 09:25:49
2	Weiguo Jiang	0.04 s	Python 3	2022-06-15 00:39:45
3	Suus Brommer	0.04 s	Python 3	2022-06-15 12:51:17
4	Peter Stauder	0.04 s	Python 3	2022-06-17 20:27:52
5	Rajul Srivastava	0.04 s	Python 3	2022-07-17 09:55:43
6	Ryan Tan	0.04 s	Python 3	2022-07-20 16:50:46
7	Kefiyalew Kunta	0.04 s	Python 3	2022-08-03 14:42:27
8	Melkamu Abraraw	0.04 s	Python 3	2022-08-03 16:43:58
9	Eyader Tsehayu	0.04 s	Python 3	2022-08-03 16:51:33
10	Rafael Sheen Acuna	0.04 s	Python 3	2022-08-20 05:04:39

#	User	Runtime	Language	Date
1	Miorel Palii	0.05 s	Ruby	2022-03-14 07:20:09
2	Thomas Feld	0.06 s	Ruby	2023-05-11 08:19:28

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-02-27 22:47:34
2	Arnav Sastry	0.00 s	Rust	2022-03-11 05:06:15
3	Christoffer Danborg Irvall	0.00 s	Rust	2022-04-08 18:20:16
4	Eric Pinter	0.00 s	Rust	2022-05-28 00:53:22
5	Hidden user	0.00 s	Rust	2023-04-22 12:09:10
6	Vincent Lagerros	0.00 s	Rust	2024-10-13 17:57:50

#	User	Length	Language	Date
1	Samuel Mikuláš	687	C	2025-09-16 14:00:52
2	Dries Wedda	783	C	2022-09-10 23:24:29
3	Mirel Cosulschi	880	C	2025-03-21 22:06:18
4	Șerban Tonie	920	C	2022-09-15 15:27:32
5	Max Nilsson	1053	C	2022-04-22 17:27:57
6	E. Janssen	1073	C	2025-09-30 19:31:55
7	Szymon Kucharski	1123	C	2022-09-11 18:25:54
8	Nick Hargrove	1196	C	2022-02-28 01:08:11
9	Mikael K Eriksson	1223	C	2022-03-01 11:38:40
10	Meta Heric	1581	C	2023-06-18 17:48:18

#	User	Length	Language	Date
1	Göran Andersson	934	C#	2022-05-19 22:04:08
2	Eric Weiss	1101	C#	2022-09-12 21:53:40
3	Laurens Fijn van Draat	1311	C#	2022-09-14 16:51:20
4	Henrik Hallbert	1316	C#	2022-03-24 13:23:43
5	Rohan Johnson	1506	C#	2022-11-03 17:50:15
6	Frank Tabak	1526	C#	2022-09-14 16:39:17
7	Joop van der Heiden	1628	C#	2022-09-14 16:52:04
8	Joel Fisser	1738	C#	2022-09-14 17:47:55
9	Koen Timmermans	1741	C#	2022-09-14 16:36:59
10	Cynthia Luijkx	1925	C#	2022-09-14 16:51:21

#	User	Length	Language	Date
1	Omar Muhammetkulyyev	537	C++	2025-04-13 08:43:43
2	Timothy White	539	C++	2023-02-19 13:16:42
3	Hidden user	548	C++	2022-02-27 17:50:51
4	Hidden user	559	C++	2022-08-10 08:50:45
5	Hidden user	560	C++	2022-07-31 03:24:18
6	Matseoi	568	C++	2023-02-12 07:14:04
7	Evan Michael Bailey	586	C++	2022-11-22 19:42:25
8	Gao Tianrun	614	C++	2023-08-01 14:56:56
9	JUSTIN TAN	619	C++	2022-08-20 05:22:41
10	Dmitry Lyubshin	629	C++	2023-03-30 10:44:11

#	User	Length	Language	Date
1	Gaelan McMillan	564	Common Lisp	2022-10-22 01:17:28

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1052	F#	2023-04-06 13:13:32

#	User	Length	Language	Date
1	Michael Johansson	673	Go	2022-11-22 17:46:13
2	Hidden user	717	Go	2022-11-02 09:15:22
3	Norbert Voelker	1287	Go	2022-03-18 23:37:48

#	User	Length	Language	Date
1	Steinar Simonnes	623	Haskell	2024-12-29 17:28:12
2	Brent Yorgey	8629	Haskell	2022-02-27 22:56:41

#	User	Length	Language	Date
1	Henry Fong	387	Java	2022-10-30 17:45:54
2	Bowen Yang	504	Java	2022-10-30 16:15:33
3	Nishikar Paruchuri	821	Java	2022-02-26 21:06:36
4	Doug Goodman	912	Java	2022-02-27 17:26:12
5	Tyler Erdman	917	Java	2022-02-26 20:39:11
6	Tuhina Das	929	Java	2022-10-29 22:39:13
7	Kevin Kauffman	953	Java	2022-02-27 19:54:14
8	Nathan Anderson	959	Java	2025-04-13 19:57:15
9	Jaden Rodriguez	969	Java	2022-02-26 19:42:35
10	Kavya Eswaramoorthy	987	Java	2022-10-29 21:00:24

#	User	Length	Language	Date
1	Minh Trang Nguyen	1333	JavaScript (Node.js)	2025-12-12 17:37:03
2	Ram Basnet	1443	JavaScript (Node.js)	2022-03-07 07:28:20

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	488	JavaScript (SpiderMonkey)	2022-03-01 22:50:42
2	Christian Pilegaard Cederquist	494	JavaScript (SpiderMonkey)	2023-03-01 00:21:03

#	User	Length	Language	Date
1	Timothy Gaede	1397	Julia	2024-06-23 07:59:50

#	User	Length	Language	Date
1	Adam Rankin	902	Kotlin	2023-09-28 06:34:33
2	Benjamin Laurence Erickson	954	Kotlin	2022-11-09 00:14:00
3	Jacob Huebner	1170	Kotlin	2022-02-28 03:14:13

#	User	Length	Language	Date
1	Andriy Zyevakov	5472	Prolog	2025-12-03 07:09:34

#	User	Length	Language	Date
1	Yanmarshus Bachtiar	438	Python 2	2022-03-15 11:14:33

#	User	Length	Language	Date
1	Victorio NASCIMENTO	157	Python 3	2024-11-28 05:39:37
2	Ahmed Chamseddine	173	Python 3	2025-05-16 11:25:18
3	Benjamin Z White	232	Python 3	2023-05-15 09:25:17
4	Noah Hessen Bjerke	269	Python 3	2025-11-28 03:23:23
5	Kylind Reagan	277	Python 3	2024-11-27 07:31:05
6	Paco Criado	334	Python 3	2024-03-15 00:21:59
7	Yeabsra Ayehualem	338	Python 3	2022-09-07 20:45:42
8	Jason Oliphant	342	Python 3	2025-11-14 02:59:13
9	Josh Taylor	349	Python 3	2023-10-12 23:43:05
10	Hidden user	359	Python 3	2022-08-22 20:08:30

#	User	Length	Language	Date
1	Thomas Feld	140	Ruby	2023-05-11 08:20:20
2	Miorel Palii	385	Ruby	2022-03-14 07:20:09

#	User	Length	Language	Date
1	Bas Dirks	854	Rust	2022-02-27 22:47:34
2	Christoffer Danborg Irvall	1139	Rust	2022-04-08 18:20:16
3	Vincent Lagerros	1294	Rust	2024-10-13 17:57:50
4	Eric Pinter	1957	Rust	2022-05-28 00:53:22
5	Hidden user	2079	Rust	2023-04-22 12:09:10
6	Arnav Sastry	2676	Rust	2022-03-11 05:06:15

Solution running time distribution