Problem A
Champernowne Verification — Problem Statistics

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Submissions	3239
Accepted submissions	1739
Submission ratio	53.69%
Authors	1523
Full solves [?]	1439
Full solve Ratio	94.48%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2024-02-26 15:00:10
2	Saito Ta	0.01 s	Bash	2024-05-30 03:31:19
3	Chenzhang Hu	0.01 s	Bash	2025-09-12 21:11:56

#	User	Runtime	Language	Date
1	Anthony Ye	0.03 s	C#	2024-05-10 20:49:29
2	Joachim Horshauge	0.04 s	C#	2024-03-04 18:39:14
3	Freek van Keulen	0.04 s	C#	2024-03-07 10:15:56
4	Benjamin Bilbeau	0.04 s	C#	2024-03-20 18:55:44
5	Jan Matthiessen	0.04 s	C#	2024-03-26 19:42:36
6	Pontus Magnusson	0.04 s	C#	2024-03-28 08:51:55
7	traxex	0.04 s	C#	2024-04-29 16:09:45
8	Esty Crow	0.04 s	C#	2024-05-10 16:42:19
9	Tom Stocker	0.04 s	C#	2024-08-02 17:43:59
10	Brad	0.04 s	C#	2024-08-02 17:54:27

#	User	Runtime	Language	Date
1	Emil Boesgaard Nørbjerg	0.07 s	F#	2024-03-15 16:26:54
2	David Vinje	0.07 s	F#	2024-03-15 16:40:10

#	User	Runtime	Language	Date
1	Norbert Voelker	0.00 s	Go	2024-02-25 15:41:01
2	Jimmy Nejtron	0.00 s	Go	2024-04-19 11:43:00

#	User	Runtime	Language	Date
1	Esmond Herry	0.04 s	Java	2024-10-19 01:44:43
2	Andrew M	0.04 s	Java	2024-11-09 19:19:15
3	Stela Palii	0.04 s	Java	2024-11-29 09:23:39
4	Hidden user	0.04 s	Java	2025-02-02 16:52:09
5	Niels Laier Jensen	0.04 s	Java	2025-02-03 13:39:26
6	Max Sørensen	0.04 s	Java	2025-02-03 14:25:14
7	Apostolos Draganis	0.04 s	Java	2025-02-03 14:49:26
8	Mikkel Dybro Hansen	0.04 s	Java	2025-02-03 16:13:57
9	Grant Johnson	0.04 s	Java	2025-02-03 16:24:59
10	Hidden user	0.04 s	Java	2025-02-03 16:57:39

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2024-10-11 19:32:12
2	Faisal Rahman	0.05 s	JavaScript (Node.js)	2024-03-02 11:08:12
3	Hassan rauf	0.05 s	JavaScript (Node.js)	2024-05-26 21:12:31
4	Usman	0.05 s	JavaScript (Node.js)	2024-05-26 22:39:30

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2024-02-25 01:56:58
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2024-02-26 22:04:15
3	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2024-02-27 04:34:06
4	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-06-10 14:48:25

#	User	Runtime	Language	Date
1	Danny Robinson	0.46 s	Julia	2024-02-26 14:49:57
2	Timothy Gaede	0.58 s	Julia	2024-03-19 02:47:49

#	User	Runtime	Language	Date
1	Troy Warmboe	0.19 s	Kotlin	2024-04-06 00:48:52
2	Adam Rankin	0.19 s	Kotlin	2024-05-05 04:30:30
3	Emil Wihlander	0.19 s	Kotlin	2024-07-16 22:14:05
4	Paul McBurney	0.20 s	Kotlin	2024-02-24 20:27:21
5	Oleg	0.20 s	Kotlin	2024-11-08 08:27:12
6	Martijn Muijsers	0.21 s	Kotlin	2024-05-28 10:34:45
7	Danny Mittal	0.22 s	Kotlin	2024-02-24 20:15:47
8	Chris Johnson	0.23 s	Kotlin	2024-11-15 22:33:11

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Lua	2026-01-28 11:39:14

#	User	Runtime	Language	Date
1	Artemis Ngoh	0.00 s	OCaml	2024-03-03 15:32:22
2	Runze Wang	0.00 s	OCaml	2024-03-09 08:54:44
3	Fredrik Eriksson	0.00 s	OCaml	2024-11-03 00:50:07

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-05-20 05:58:48

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2024-03-08 09:45:25
2	David Connolly	0.00 s	Pascal	2024-03-15 15:31:36

#	User	Runtime	Language	Date
1	Saito Ta	0.00 s	Perl	2024-03-29 03:52:11

#	User	Runtime	Language	Date
1	Kylind Reagan	0.01 s	PHP	2024-03-07 02:17:46
2	crapcode	0.01 s	PHP	2024-03-08 14:28:09
3	Renate	0.01 s	PHP	2024-04-07 10:57:25

#	User	Runtime	Language	Date
1	Johan Lyts	0.03 s	Python 2	2024-03-27 13:11:48
2	Hendrik Schneider	0.03 s	Python 2	2024-05-30 17:04:45

#	User	Runtime	Language	Date
1	João Manoel Feck	0.04 s	Python 3	2024-08-30 14:15:08
2	Zander Thannhauser	0.04 s	Python 3	2024-08-31 21:02:09
3	Hugo Falkman	0.04 s	Python 3	2024-09-01 01:09:21
4	Luis Enrique Cortijo Gonzales	0.04 s	Python 3	2024-09-04 02:21:43
5	Ido Koubi	0.04 s	Python 3	2024-09-04 15:29:23
6	Edvard Walde Heimdal	0.04 s	Python 3	2024-09-04 20:00:09
7	Daniela Cojab Mizrahi	0.04 s	Python 3	2024-09-04 22:41:43
8	Rebecca Jackson	0.04 s	Python 3	2024-09-05 22:10:26
9	Ana Victoria Ramírez de Alba Rodríguez	0.04 s	Python 3	2024-09-06 02:26:27
10	Ole Markus Bråthen	0.04 s	Python 3	2024-09-06 11:24:01

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2024-02-27 12:57:06
2	Frederik Petersen	0.07 s	Ruby	2024-03-28 11:56:48
3	Trường Đặng	0.07 s	Ruby	2024-06-05 06:36:02
4	Matzuka	0.07 s	Ruby	2025-11-25 10:33:58

#	User	Length	Language	Date
1	Chenzhang Hu	43	Bash	2025-09-13 17:04:22
2	Danny Robinson	51	Bash	2024-02-26 15:01:43
3	Saito Ta	331	Bash	2024-05-30 03:31:19

#	User	Length	Language	Date
1	Martin Blom	134	C	2024-06-13 16:40:30
2	Allan Nouri	248	C	2024-02-28 19:34:31
3	Brian Stuart	262	C	2024-02-24 22:20:14
4	Mirel Cosulschi	328	C	2024-09-26 10:30:05
5	Roemer Caliboso	337	C	2024-08-30 14:53:54
6	Tyler Mulholland	346	C	2024-03-19 22:31:44
7	Mikael K Eriksson	363	C	2024-02-25 15:51:00
8	Birger Lundin	383	C	2024-12-19 12:20:58
9	Hidden user	421	C	2024-03-10 15:43:25
10	Fereshta Hasanzada	469	C	2025-02-23 10:14:15

#	User	Length	Language	Date
1	Tom Stocker	95	C#	2024-08-02 20:42:48
2	traxex	162	C#	2024-04-29 16:09:45
3	Anthony Ye	200	C#	2024-05-10 20:53:41
4	Esty Crow	262	C#	2024-05-10 16:42:19
5	Pontus Magnusson	329	C#	2024-03-28 08:51:55
6	Freek van Keulen	330	C#	2024-03-07 10:15:56
7	Deci Bel	506	C#	2025-08-10 14:25:35
8	Drew Hudson	602	C#	2024-08-02 18:05:49
9	Umar Rasyid	613	C#	2025-01-12 21:55:15
10	Dennis Stegnell	638	C#	2024-02-26 06:40:50

#	User	Length	Language	Date
1	Frans Meulenbroeks	132	C++	2025-02-18 18:31:17
2	Evan Magill	133	C++	2024-02-25 09:18:21
3	Evan Michael Bailey	196	C++	2024-02-25 16:42:27
4	Paul Wild	197	C++	2024-02-24 20:27:37
5	Maicol Parr	208	C++	2024-02-29 20:12:29
6	Evan Woloszynek	210	C++	2025-10-30 01:18:03
7	Evan Bailey	222	C++	2024-02-24 20:04:54
8	Jansen Craft	222	C++	2024-04-20 02:21:21
9	Jiahao Fu	235	C++	2024-02-24 20:08:02
10	Ernest Ng Zi Xuan	238	C++	2024-02-25 15:09:55

#	User	Length	Language	Date
1	David Vinje	355	F#	2024-03-15 16:40:10
2	Emil Boesgaard Nørbjerg	2027	F#	2024-03-15 16:26:54

#	User	Length	Language	Date
1	Jimmy Nejtron	298	Go	2024-04-19 11:43:00
2	Norbert Voelker	366	Go	2024-02-25 15:41:01

#	User	Length	Language	Date
1	Adam Yaser Sweilem	80	Haskell	2025-06-15 13:25:27
2	Rudy Matela	94	Haskell	2024-03-19 10:38:30
3	Jan Hrček	162	Haskell	2024-12-06 15:13:28
4	Hidden user	182	Haskell	2024-02-25 16:14:49
5	David Zacek	198	Haskell	2024-03-10 00:31:42
6	Sebastian Banert	226	Haskell	2024-06-08 22:28:37
7	Ramesh baskaran	226	Haskell	2024-10-16 04:30:32
8	Brent Yorgey	243	Haskell	2024-02-24 22:49:34
9	vagabundus	259	Haskell	2024-04-28 00:37:25
10	Giorgio Sorgente	284	Haskell	2026-02-20 20:18:11

#	User	Length	Language	Date
1	Esmond Herry	300	Java	2024-10-19 02:36:54
2	Oliver Flinck Sheye	310	Java	2025-02-04 15:37:36
3	John Hershey	316	Java	2024-02-27 04:09:11
4	Thomas King	332	Java	2024-06-21 20:48:58
5	Ronas Jacob Coban Olsen	338	Java	2024-03-15 16:26:37
6	Tristan Rush	340	Java	2024-02-24 21:39:04
7	Nick Wu	349	Java	2024-02-27 00:29:41
8	Raymond Arrington	351	Java	2024-06-08 05:59:37
9	Thomas Anung Basuki	363	Java	2025-12-06 14:15:41
10	Oliver Starup	386	Java	2024-03-15 16:25:07

#	User	Length	Language	Date
1	Faisal Rahman	410	JavaScript (Node.js)	2024-03-02 11:08:12
2	Hidden user	622	JavaScript (Node.js)	2024-10-11 19:32:12
3	Hassan rauf	674	JavaScript (Node.js)	2024-05-26 21:12:31
4	Usman	700	JavaScript (Node.js)	2024-05-26 22:39:30

#	User	Length	Language	Date
1	Jimmy Gustafsson	75	JavaScript (SpiderMonkey)	2024-06-10 14:51:21
2	Bjørn Chr. Soltvedt	76	JavaScript (SpiderMonkey)	2024-02-25 01:58:32
3	Christian Pilegaard Cederquist	101	JavaScript (SpiderMonkey)	2024-02-26 22:04:15
4	Zach Tschetter	185	JavaScript (SpiderMonkey)	2024-02-27 04:34:06

#	User	Length	Language	Date
1	Danny Robinson	60	Julia	2024-02-26 14:49:57
2	Timothy Gaede	328	Julia	2024-03-19 02:47:49

#	User	Length	Language	Date
1	Danny Mittal	158	Kotlin	2024-02-24 20:15:47
2	Adam Rankin	263	Kotlin	2024-05-05 04:30:30
3	Troy Warmboe	320	Kotlin	2024-04-06 00:48:52
4	Emil Wihlander	327	Kotlin	2024-07-16 22:14:05
5	Oleg	329	Kotlin	2024-11-08 08:27:12
6	Chris Johnson	344	Kotlin	2024-11-15 22:33:11
7	Paul McBurney	551	Kotlin	2024-02-24 20:27:21
8	Martijn Muijsers	578	Kotlin	2024-05-28 10:34:45

#	User	Length	Language	Date
1	Hidden user	372	Lua	2026-01-28 11:39:14

#	User	Length	Language	Date
1	Runze Wang	237	OCaml	2024-03-09 08:54:44
2	Artemis Ngoh	379	OCaml	2024-03-03 15:32:22
3	Fredrik Eriksson	531	OCaml	2024-11-03 00:50:07

#	User	Length	Language	Date
1	Hidden user	612	Odin	2025-05-20 05:58:48

#	User	Length	Language	Date
1	Ingemar Ragnemalm	316	Pascal	2024-03-08 09:45:25
2	David Connolly	444	Pascal	2024-03-15 15:31:36

#	User	Length	Language	Date
1	Saito Ta	39	Perl	2024-03-29 03:52:11

#	User	Length	Language	Date
1	Kylind Reagan	78	PHP	2024-03-07 02:30:20
2	Renate	246	PHP	2024-04-07 10:57:25
3	crapcode	334	PHP	2024-03-08 14:28:09

#	User	Length	Language	Date
1	Hendrik Schneider	48	Python 2	2024-05-30 19:34:25
2	Johan Lyts	258	Python 2	2024-03-27 13:11:48

#	User	Length	Language	Date
1	Sisyphus	47	Python 3	2024-05-30 03:02:30
2	Ben Zydney	47	Python 3	2024-05-30 03:32:01
3	JoKing	48	Python 3	2024-05-30 13:01:05
4	Hendrik Schneider	48	Python 3	2024-05-30 19:52:31
5	Kevin Gomez	49	Python 3	2024-03-22 03:56:28
6	Kylind Reagan	50	Python 3	2024-03-07 02:02:41
7	Bo Stokes	51	Python 3	2024-10-16 02:42:52
8	Connor Nagle	52	Python 3	2024-02-25 23:12:43
9	Daniel Bogorad	53	Python 3	2025-10-15 02:33:59
10	András Biczó	54	Python 3	2024-02-28 11:09:27

#	User	Length	Language	Date
1	Thomas Feld	43	Ruby	2024-02-27 12:57:06
2	Frederik Petersen	87	Ruby	2024-03-28 11:56:48
3	Matzuka	91	Ruby	2025-11-25 10:33:58
4	Trường Đặng	227	Ruby	2024-06-05 06:36:02

#	User	Length	Language	Date
1	Vincent Lagerros	172	Rust	2024-09-30 01:10:58
2	David Rasch	317	Rust	2024-03-05 09:45:33
3	Pankajkumar Patro	474	Rust	2024-07-25 22:23:31
4	Jonas Ryssel	487	Rust	2024-03-15 16:47:05
5	Winston Wu	500	Rust	2024-02-29 05:24:29
6	Asad Abbas	501	Rust	2024-05-28 08:50:33
7	Aza Maulana Hadi	503	Rust	2024-03-13 10:10:38
8	Emil Dichmann	514	Rust	2025-09-28 06:20:05
9	Gabriel Cristian Circiu	543	Rust	2024-03-15 16:37:22
10	Isak Jägberg	605	Rust	2024-10-18 13:05:32

Solution running time distribution