Problem D
Estimating the Area of a Circle — Problem Statistics

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Submissions	8505
Accepted submissions	4760
Submission ratio	55.97%
Authors	4424
Accepted authors	4196
Author ratio	94.85%

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	Bash	2023-04-27 09:39:18
2	Chenzhang Hu	0.09 s	Bash	2024-02-05 16:25:55

#	User	Runtime	Language	Date
1	Piotr Karpala	0.02 s	C#	2015-09-20 22:52:16
2	Niklas Huss	0.02 s	C#	2015-10-12 20:53:47
3	Jens Mossig	0.02 s	C#	2015-10-20 18:08:20
4	Andriy Zyevakov	0.02 s	C#	2015-10-25 09:33:48
5	Stefan Nordling	0.02 s	C#	2015-10-30 21:34:48
6	Love Engman	0.02 s	C#	2016-03-31 11:38:36
7	Luiz Miranda	0.02 s	C#	2016-04-02 21:57:00
8	Joe Amenta	0.02 s	C#	2016-04-05 04:48:12
9	Khin Nyunt	0.02 s	C#	2016-04-11 06:16:15
10	Yé Wai Yan	0.02 s	C#	2016-05-16 18:54:47

#	User	Runtime	Language	Date
1	Francisco Romero	0.01 s	COBOL	2022-01-25 20:54:21

#	User	Runtime	Language	Date
1	David Cawthon	0.04 s	Common Lisp	2019-05-10 02:00:13

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-06-05 15:08:59
2	Patrick Bahr	0.06 s	F#	2021-02-20 14:41:16
3	Tim Mondorf	0.06 s	F#	2021-12-01 15:46:48

#	User	Runtime	Language	Date
1	Daniel Agatan	0.00 s	Go	2025-03-01 19:23:05
2	Norbert Voelker	0.02 s	Go	2021-04-11 20:24:25
3	Hidden user	0.02 s	Go	2023-08-13 13:42:31
4	Shehab Ahmed Hatem	0.02 s	Go	2023-11-26 18:57:31
5	Lim Ming Yean	0.04 s	Go	2018-11-17 14:48:55
6	Angelo Yang	0.04 s	Go	2019-05-01 02:22:00
7	Ng Wei Jie	0.05 s	Go	2020-02-17 20:52:50
8	Thomas Mailund	0.05 s	Go	2020-11-22 18:54:37
9	Badr Kamel	0.05 s	Go	2021-05-09 16:09:50
10	Kok Dith	0.05 s	Go	2021-07-30 18:39:09

#	User	Runtime	Language	Date
1	Wilfried van Asten	0.01 s	Haskell	2015-11-28 07:11:11
2	Carl Agrell	0.01 s	Haskell	2016-09-28 15:21:20
3	César Antonio Carvajal de la Haza	0.01 s	Haskell	2017-03-11 15:19:14
4	Antonio Morales Pérez	0.01 s	Haskell	2017-03-20 18:12:54
5	Daniel German	0.01 s	Haskell	2018-06-06 20:31:35
6	Tim Put	0.01 s	Haskell	2021-03-05 05:24:52
7	Hidden user	0.02 s	Haskell	2015-10-02 00:54:49
8	Blake Hyde	0.02 s	Haskell	2015-10-15 04:30:17
9	Christian Leipe	0.02 s	Haskell	2015-11-30 22:11:58
10	Peter Deal	0.02 s	Haskell	2016-05-07 21:01:46

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.06 s	Java	2022-12-17 17:27:33
2	Lee Heng Sheng	0.07 s	Java	2024-04-18 16:19:53
3	Dennis Ang	0.09 s	Java	2015-09-25 19:59:22
4	Pål Forsberg	0.09 s	Java	2015-10-02 15:25:33
5	Eric Andow	0.09 s	Java	2015-10-04 21:58:32
6	Petter Andersson	0.09 s	Java	2015-10-18 19:55:56
7	Omar Brome	0.09 s	Java	2015-11-21 10:17:11
8	Joel Vikström	0.09 s	Java	2015-12-04 09:16:13
9	Łukasz Antkowiak	0.09 s	Java	2015-12-24 14:27:39
10	Michael Sullivan	0.09 s	Java	2015-12-25 07:34:05

#	User	Runtime	Language	Date
1	Carl Sundvall	0.06 s	JavaScript (Node.js)	2018-10-28 21:05:42
2	Hidden user	0.06 s	JavaScript (Node.js)	2023-11-19 02:31:21
3	Anthony Czarnecki	0.06 s	JavaScript (Node.js)	2024-04-18 22:59:16
4	tannal	0.07 s	JavaScript (Node.js)	2024-01-17 08:25:34
5	Andoko Chandra	0.43 s	JavaScript (Node.js)	2020-10-05 15:41:42
6	Tilo Hirsch	0.44 s	JavaScript (Node.js)	2020-07-13 19:18:22
7	John	0.44 s	JavaScript (Node.js)	2020-07-29 01:31:39
8	Hovhannes Kantuni	0.44 s	JavaScript (Node.js)	2020-09-03 03:35:50
9	Chris Wong	0.44 s	JavaScript (Node.js)	2021-02-03 21:00:58
10	Ralf Leistad	0.44 s	JavaScript (Node.js)	2021-08-11 15:37:05

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2015-12-22 18:59:55
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-16 13:14:02
3	Gabriel Lau	0.01 s	JavaScript (SpiderMonkey)	2016-03-29 00:10:51
4	Michael Laszlo	0.01 s	JavaScript (SpiderMonkey)	2016-09-28 16:48:54
5	Cole Rauh	0.01 s	JavaScript (SpiderMonkey)	2016-10-06 19:31:34
6	Spencer Smith	0.01 s	JavaScript (SpiderMonkey)	2017-06-06 22:07:40
7	Peter Menyes	0.01 s	JavaScript (SpiderMonkey)	2017-08-25 18:03:49
8	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-12-31 15:20:27
9	Dilawar Mahmood	0.01 s	JavaScript (SpiderMonkey)	2018-02-15 18:58:00
10	Robin Livesey	0.01 s	JavaScript (SpiderMonkey)	2018-04-16 12:17:09

#	User	Runtime	Language	Date
1	Noszály Csaba	0.45 s	Julia	2025-04-12 16:37:10
2	Timothy Gaede	0.53 s	Julia	2024-03-20 18:11:23

#	User	Runtime	Language	Date
1	Albert Pala	0.19 s	Kotlin	2021-05-27 04:35:15
2	Phường Lên	0.25 s	Kotlin	2020-02-14 05:38:26
3	Taylor South	0.26 s	Kotlin	2023-03-28 23:22:43
4	Dmitry Shostak	0.27 s	Kotlin	2018-08-20 14:33:55
5	Adam Rankin	0.28 s	Kotlin	2023-04-24 04:18:14
6	Sarek Høverstad Skotåm	0.31 s	Kotlin	2020-10-11 00:12:19
7	Sergey Jakobsen	0.31 s	Kotlin	2021-08-17 12:59:27
8	Merih Bora Poçan	0.32 s	Kotlin	2020-09-06 22:53:46
9	Jonathan Soo	0.34 s	Kotlin	2019-06-25 04:21:15
10	Einar Kjellback	0.34 s	Kotlin	2019-12-03 18:01:32

#	User	Runtime	Language	Date
1	Shehab Ahmed Hatem	0.00 s	Lua	2023-11-16 16:16:18
2	Zeheng Li	0.01 s	Lua	2023-12-13 00:23:45

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	OCaml	2025-06-21 22:25:19

#	User	Runtime	Language	Date
1	Egor Shchetinin	0.00 s	Pascal	2018-01-29 17:43:59
2	Vova Podkorytov	0.00 s	Pascal	2018-01-29 18:26:52
3	David Connolly	0.00 s	Pascal	2021-10-07 00:01:56

#	User	Runtime	Language	Date
1	Saito Ta	0.02 s	Perl	2024-04-24 08:48:51

#	User	Runtime	Language	Date
1	Silvena Lam	0.01 s	PHP	2016-02-10 09:03:15
2	Steven D. Wilson	0.01 s	PHP	2016-03-26 03:02:45
3	Hidden user	0.01 s	PHP	2017-06-18 22:49:17
4	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-14 11:45:42
5	Renate	0.01 s	PHP	2021-04-22 13:35:51
6	Andre Wahyudi	0.01 s	PHP	2022-10-18 07:24:00

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.03 s	Prolog	2016-04-30 16:21:52
2	Hakan Kjellerstrand	0.04 s	Prolog	2023-01-28 23:09:58

#	User	Runtime	Language	Date
1	Johannes Agestam	0.03 s	Python 2	2015-10-13 13:46:21
2	Alexander Teno	0.03 s	Python 2	2016-01-07 17:24:15
3	James Bridgewater	0.03 s	Python 2	2017-02-11 23:33:18
4	Christofer Ohlsson	0.04 s	Python 2	2015-08-18 22:22:11
5	Nick Wu	0.04 s	Python 2	2015-10-05 02:42:37
6	Greg Hamerly	0.04 s	Python 2	2015-10-13 23:32:02
7	Erik Sillén	0.04 s	Python 2	2015-10-16 15:52:15
8	Oskar Haarklou Veileborg	0.04 s	Python 2	2015-10-17 17:07:53
9	Hans Rusten	0.04 s	Python 2	2015-10-19 20:20:12
10	Blake Hawkins	0.04 s	Python 2	2015-10-22 00:04:24

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Python 3	2015-09-15 09:58:31
2	Victor Zheng	0.02 s	Python 3	2015-10-04 05:15:16
3	Snild Dolkow	0.02 s	Python 3	2015-10-04 16:12:07
4	James Elías Sigurðarson	0.02 s	Python 3	2015-10-10 02:36:08
5	Bjarki Stefánsson	0.02 s	Python 3	2015-10-12 02:08:08
6	Johannes Agestam	0.02 s	Python 3	2015-10-13 13:45:21
7	Emil Riis Hansen	0.02 s	Python 3	2015-10-14 21:27:10
8	Markus Lidström	0.02 s	Python 3	2015-10-30 22:19:54
9	Hidden user	0.02 s	Python 3	2015-11-28 00:39:14
10	Mikael Hedin	0.02 s	Python 3	2015-12-02 10:03:52

#	User	Runtime	Language	Date
1	Ben Ellis	0.03 s	Ruby	2015-12-15 10:24:30
2	Casper Christensen	0.03 s	Ruby	2016-01-01 02:23:05
3	Lasse Berglund	0.03 s	Ruby	2016-03-29 13:18:51
4	Kellen Watt	0.03 s	Ruby	2016-06-04 19:18:13
5	Erik Rydbert	0.03 s	Ruby	2016-07-11 04:35:28
6	Clifford Owino	0.03 s	Ruby	2017-05-24 16:09:11
7	Reed Harris	0.03 s	Ruby	2018-03-06 19:25:18
8	Hidden user	0.03 s	Ruby	2018-03-06 21:39:50
9	Paul Vinell	0.04 s	Ruby	2018-04-13 16:01:02
10	Enzo Crance	0.05 s	Ruby	2018-08-16 04:44:26

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-02-05 16:25:55
2	Thomas Feld	44	Bash	2023-09-12 15:28:43

#	User	Length	Language	Date
1	Martin Blom	150	C	2023-10-18 07:17:32
2	Matthew Weston	185	C	2021-12-28 15:47:48
3	Wesley Stephanak	188	C	2019-02-07 04:56:11
4	Hidden user	212	C	2016-04-29 04:03:45
5	Matteo Piano	216	C	2016-12-21 11:16:23
6	Chaimaâ Azizyani	217	C	2020-08-20 16:37:50
7	Olav Røthe Bakken	219	C	2017-10-21 23:45:29
8	Jack Rosenthal	221	C	2015-11-16 06:05:21
9	April Clark	222	C	2021-09-24 01:47:05
10	Mai Tuyết	229	C	2024-07-25 17:26:42

#	User	Length	Language	Date
1	Marek Bina	412	C#	2019-02-15 11:23:58
2	Göran Andersson	439	C#	2022-05-08 22:21:03
3	Steve Jia	454	C#	2018-09-04 20:42:00
4	李陆屿	487	C#	2019-05-08 14:41:20
5	Esty Crow	493	C#	2022-11-28 13:37:50
6	Kunwei Zhang	502	C#	2018-02-05 02:33:25
7	Hidden user	511	C#	2020-07-07 16:27:38
8	Thomas Norris	521	C#	2019-06-24 23:09:54
9	Simon Lundqvist	523	C#	2020-07-08 13:35:23
10	Anthony Ye	550	C#	2022-12-04 18:41:07

#	User	Length	Language	Date
1	Frans Meulenbroeks	115	C++	2025-03-07 22:58:54
2	Syx Pek	178	C++	2016-01-21 09:28:48
3	David Wärn	181	C++	2015-08-29 00:35:38
4	Yogesh Kumar	181	C++	2016-01-16 12:43:41
5	Wei Liang Tan	183	C++	2019-05-23 10:25:24
6	Elias Lolck	187	C++	2022-12-28 21:08:13
7	Antonio Molina Lovett	191	C++	2016-08-06 00:00:27
8	Iles Illés Tamás	192	C++	2019-07-27 14:49:47
9	Herman Karlsson	193	C++	2015-09-09 22:21:24
10	Farid Ayoujil	203	C++	2016-12-25 21:21:19

#	User	Length	Language	Date
1	Francisco Romero	1246	COBOL	2022-01-25 20:54:21

#	User	Length	Language	Date
1	David Cawthon	469	Common Lisp	2019-05-10 02:00:13

#	User	Length	Language	Date
1	Tim Mondorf	551	F#	2021-12-01 15:46:48
2	Jacob Harris Cryer Kragh	786	F#	2022-06-05 15:08:59
3	Patrick Bahr	1974	F#	2021-02-20 14:41:16

#	User	Length	Language	Date
1	Thomas Mailund	198	Go	2020-11-22 18:54:37
2	Hidden user	198	Go	2021-12-17 11:41:24
3	Alp Duman	235	Go	2022-02-28 23:52:34
4	Wojtek Bednarzak	247	Go	2018-04-30 21:35:21
5	Hidden user	289	Go	2022-01-30 21:13:38
6	Bridger Howell	318	Go	2022-03-24 17:53:21
7	Ng Wei Jie	319	Go	2020-02-17 20:52:50
8	Jerry Zhou	319	Go	2023-03-28 23:29:26
9	Matthew Ling	319	Go	2018-01-17 04:15:50
10	Adam Smith	323	Go	2017-03-09 21:53:00

#	User	Length	Language	Date
1	Birk Tjelmeland	169	Haskell	2017-01-09 01:20:15
2	Sebastian Banert	217	Haskell	2023-04-07 22:32:12
3	Sebastian Paaske Tørholm	220	Haskell	2017-02-01 14:51:02
4	Lieven Marchand	220	Haskell	2017-09-10 23:11:41
5	Håkon Flatval	229	Haskell	2018-08-10 15:30:31
6	Jan Hrček	243	Haskell	2020-10-20 18:15:02
7	Hidden user	244	Haskell	2016-07-29 00:32:40
8	Matthew Johnson	256	Haskell	2017-02-02 23:08:59
9	Michael Gilliland	259	Haskell	2020-10-28 21:17:14
10	David Zacek	266	Haskell	2021-05-02 23:40:59

#	User	Length	Language	Date
1	Natalie Longtin	320	Java	2018-09-27 20:44:52
2	Doug Goodman	332	Java	2017-11-11 18:52:21
3	Jason Liu	340	Java	2023-05-05 17:05:39
4	Nanda Thant Sin	349	Java	2018-04-05 08:54:30
5	Hidden user	362	Java	2018-09-27 20:51:36
6	Duncan Page	370	Java	2018-11-20 22:10:34
7	Lim Ting Kai	384	Java	2023-06-07 13:27:42
8	Stela Palii	385	Java	2017-11-14 19:33:04
9	Salomon Smeke	391	Java	2015-10-13 21:01:27
10	Simon Xue	393	Java	2015-11-09 05:00:56

#	User	Length	Language	Date
1	Anthony Czarnecki	397	JavaScript (Node.js)	2024-04-18 22:59:16
2	Tilo Hirsch	456	JavaScript (Node.js)	2020-07-13 19:18:22
3	Howard Tin Chi Chan	515	JavaScript (Node.js)	2021-02-01 00:41:07
4	Hidden user	543	JavaScript (Node.js)	2023-11-19 02:31:21
5	Hovhannes Kantuni	643	JavaScript (Node.js)	2020-09-03 03:35:50
6	Khin Nyunt	697	JavaScript (Node.js)	2021-10-03 10:54:08
7	Ralf Leistad	823	JavaScript (Node.js)	2021-08-11 15:37:05
8	Niamh Limerick	829	JavaScript (Node.js)	2022-02-18 02:02:37
9	tannal	904	JavaScript (Node.js)	2024-01-17 08:25:34
10	John	925	JavaScript (Node.js)	2020-07-29 01:31:39

#	User	Length	Language	Date
1	Christian Cederquist	84	JavaScript (SpiderMonkey)	2022-11-05 01:58:41
2	Jimmy Gustafsson	90	JavaScript (SpiderMonkey)	2024-06-12 21:10:38
3	Evan Magill	116	JavaScript (SpiderMonkey)	2024-04-19 01:39:12
4	Zach Tschetter	145	JavaScript (SpiderMonkey)	2023-06-14 22:08:58
5	Peter Menyes	199	JavaScript (SpiderMonkey)	2017-08-25 18:03:49
6	Bjørn Chr. Soltvedt	211	JavaScript (SpiderMonkey)	2016-01-16 13:14:02
7	Cole Rauh	221	JavaScript (SpiderMonkey)	2016-10-06 19:31:34
8	Zachary DeStefano	223	JavaScript (SpiderMonkey)	2018-09-20 04:15:49
9	Dilawar Mahmood	238	JavaScript (SpiderMonkey)	2018-02-15 18:58:00
10	Noah Witte	248	JavaScript (SpiderMonkey)	2024-04-20 17:39:38

#	User	Length	Language	Date
1	Noszály Csaba	302	Julia	2025-04-12 16:37:10
2	Timothy Gaede	734	Julia	2024-03-20 18:11:23

#	User	Length	Language	Date
1	Sergey Jakobsen	254	Kotlin	2021-08-17 12:59:27
2	Dmitry Shostak	355	Kotlin	2018-08-20 14:33:55
3	Einar Kjellback	357	Kotlin	2019-12-03 18:01:32
4	Merih Bora Poçan	364	Kotlin	2020-09-06 22:53:46
5	Dayan Ruben Gonzalez	378	Kotlin	2020-09-28 15:55:42
6	Sarek Høverstad Skotåm	447	Kotlin	2020-10-11 00:12:19
7	Troy Warmboe	511	Kotlin	2020-02-07 02:16:52
8	Jonathan Soo	515	Kotlin	2019-06-25 04:21:15
9	Adam Rankin	714	Kotlin	2023-04-24 04:18:14
10	Phường Lên	723	Kotlin	2020-02-14 05:38:26

#	User	Length	Language	Date
1	Zeheng Li	171	Lua	2023-12-13 00:23:45
2	Shehab Ahmed Hatem	851	Lua	2023-11-16 16:16:18

#	User	Length	Language	Date
1	Hidden user	407	OCaml	2025-06-21 22:25:19

#	User	Length	Language	Date
1	Egor Shchetinin	206	Pascal	2018-01-29 17:43:59
2	Vova Podkorytov	220	Pascal	2018-01-29 18:26:52
3	David Connolly	978	Pascal	2021-10-07 00:01:56

#	User	Length	Language	Date
1	Saito Ta	90	Perl	2024-04-24 08:48:51

#	User	Length	Language	Date
1	Silvena Lam	176	PHP	2016-02-10 09:03:15
2	Renate	210	PHP	2021-04-22 13:35:51
3	Steven D. Wilson	244	PHP	2016-03-26 03:02:45
4	Jonas Lindenskov Nielsen	343	PHP	2019-10-14 11:45:42
5	Hidden user	422	PHP	2017-06-18 22:49:17
6	Andre Wahyudi	702	PHP	2022-10-18 07:24:00

#	User	Length	Language	Date
1	Hakan Kjellerstrand	438	Prolog	2023-01-28 23:09:58
2	Hadi Qovaizi	15971	Prolog	2016-04-30 16:21:52

#	User	Length	Language	Date
1	Alberto Barquín	131	Python 2	2017-03-19 12:53:24
2	Mathis Hammel	136	Python 2	2017-03-07 13:17:47
3	Thomas Feld	138	Python 2	2019-08-19 14:47:46
4	Jesper Öqvist	144	Python 2	2018-10-19 17:17:51
5	Sigurður Jens Albertsson	146	Python 2	2017-12-05 13:04:20
6	Kasper Borys	152	Python 2	2017-11-13 01:39:54
7	Lars Åström	152	Python 2	2018-11-14 23:18:45
8	João Pedro Alvito	155	Python 2	2018-03-21 20:42:18
9	Miguel Alfageme Sanchez	156	Python 2	2017-02-06 04:38:36
10	Samuel Perkin	159	Python 2	2018-04-02 12:55:45

#	User	Length	Language	Date
1	Clement Oh	77	Python 3	2023-05-24 16:28:14
2	Tommi Järvenpää	82	Python 3	2024-03-19 13:27:25
3	Benjamin Z White	86	Python 3	2023-04-06 13:57:06
4	Evie Russ	89	Python 3	2023-11-13 13:17:17
5	Charles Ancheta	93	Python 3	2023-03-17 06:34:30
6	Ahmed Chamseddine	99	Python 3	2024-07-04 17:51:17
7	이정섭	112	Python 3	2022-07-21 19:53:19
8	Hidden user	117	Python 3	2025-01-05 12:56:30
9	Kyle Wells	117	Python 3	2023-10-04 22:13:23
10	Tai Tze Kin	117	Python 3	2024-05-01 16:36:22

#	User	Length	Language	Date
1	Thomas Feld	55	Ruby	2023-01-04 11:39:45
2	dick move	60	Ruby	2022-11-13 20:10:53
3	Alexander Bilde Pedersen	87	Ruby	2023-04-23 18:43:08
4	Régis Hanol	127	Ruby	2022-01-05 19:01:17
5	Hidden user	144	Ruby	2019-10-10 12:41:51
6	Hidden user	150	Ruby	2019-03-19 15:45:43
7	Erik Rydbert	164	Ruby	2016-07-11 04:35:28
8	Macdara mac an tSionnaigh	177	Ruby	2019-09-30 18:17:13
9	Eugen Neagoe	195	Ruby	2023-03-25 19:55:32
10	Kellen Watt	198	Ruby	2016-06-04 19:18:13

#	User	Length	Language	Date
1	Vincent Lagerros	354	Rust	2025-01-21 12:52:20
2	Joe Blower	498	Rust	2025-06-22 02:27:31
3	Freek van Keulen	524	Rust	2021-07-13 20:13:38
4	Albert Rise Nielsen	534	Rust	2020-10-14 00:10:37
5	Pankajkumar Patro	547	Rust	2024-08-04 21:49:39
6	Artur Khuziakhmetov	585	Rust	2022-07-28 12:46:48
7	Bas Dirks	629	Rust	2021-12-31 07:00:10
8	Chaoyi Yin	643	Rust	2019-04-01 17:34:11
9	Thomas	695	Rust	2020-12-13 22:36:22
10	Andriy Semenistiy	700	Rust	2021-05-01 13:09:47

Solution running time distribution