Problem D
Completing the Square — Problem Statistics

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Submissions	3391
Accepted submissions	1960
Submission ratio	57.80%
Authors	1809
Full solves [?]	1653
Full solve Ratio	91.38%

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.01 s	APL	2025-06-27 16:14:38

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.08 s	Bash	2024-04-16 14:32:31

#	User	Runtime	Language	Date
1	Mateja Roglic	0.02 s	C#	2016-12-02 19:25:17
2	Marko Babic	0.02 s	C#	2016-12-16 16:33:23
3	Khin Nyunt	0.02 s	C#	2017-02-22 15:41:04
4	Ludwig Hedeby	0.02 s	C#	2017-11-27 21:15:39
5	Gurpartap Singh Bhatti	0.02 s	C#	2019-08-31 23:50:02
6	Thomas Norris	0.02 s	C#	2020-01-10 20:58:12
7	Yuwono Bangun Nagoro	0.02 s	C#	2020-12-03 16:43:59
8	Denis Benčič	0.02 s	C#	2021-02-16 12:50:46
9	Mikael Fiala-Lundström	0.02 s	C#	2021-04-30 22:24:59
10	Henrik Hallbert	0.02 s	C#	2021-12-09 20:49:16

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-10-14 10:56:23
2	Emil Boesgaard Nørbjerg	0.08 s	F#	2025-03-21 20:57:21

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Go	2023-02-13 02:55:25
2	Ian Howell	0.08 s	Go	2019-09-03 17:52:53
3	Magix	0.08 s	Go	2020-12-14 03:44:56
4	Norbert Voelker	0.08 s	Go	2021-04-24 14:00:46

#	User	Runtime	Language	Date
1	Matthew Johnson	0.00 s	Haskell	2017-03-15 16:31:48
2	Antony Lee	0.00 s	Haskell	2017-09-13 21:14:38
3	Morten Lohne	0.00 s	Haskell	2017-09-20 16:34:22
4	Brent Yorgey	0.00 s	Haskell	2017-10-13 04:35:06
5	Simen Endsjø	0.00 s	Haskell	2017-11-14 15:50:41
6	Michał Kopeć	0.00 s	Haskell	2018-01-17 12:31:36
7	Quinn Flavel	0.00 s	Haskell	2022-10-30 19:08:23
8	Håkon Flatval	0.01 s	Haskell	2018-09-05 13:24:54
9	Hidden user	0.01 s	Haskell	2019-08-31 10:14:10
10	Intrets	0.01 s	Haskell	2019-09-06 18:28:30

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Java	2016-11-05 17:26:01
2	Martijn Muijsers	0.05 s	Java	2016-11-06 21:07:58
3	Finn Lidbetter	0.05 s	Java	2016-11-16 23:31:33
4	James Black	0.05 s	Java	2016-11-17 00:02:50
5	Eskil Jarlskog	0.05 s	Java	2016-12-01 11:28:37
6	Sai Sandeep Vaddi	0.05 s	Java	2017-02-05 18:19:46
7	Njeri Muguthi	0.05 s	Java	2017-04-01 16:40:06
8	Elisabeth Sulmont	0.05 s	Java	2017-04-01 16:42:28
9	William Brigham	0.05 s	Java	2017-04-19 01:28:50
10	Liam Keliher	0.05 s	Java	2017-05-07 06:17:42

#	User	Runtime	Language	Date
1	Christopher Stromberg	0.42 s	JavaScript (Node.js)	2020-02-18 23:08:10
2	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-20 14:36:31
3	Khin Nyunt	0.42 s	JavaScript (Node.js)	2021-09-26 14:28:52
4	Chris Wong	0.42 s	JavaScript (Node.js)	2022-01-13 15:21:21

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-11-08 23:03:31
2	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2017-06-07 16:47:12
3	Johannes Jensen	0.02 s	JavaScript (SpiderMonkey)	2020-12-06 07:45:11
4	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-18 13:21:15
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-24 04:52:52
6	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-08-02 06:55:18
7	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-08-30 12:18:26

#	User	Runtime	Language	Date
1	Timothy Gaede	0.71 s	Julia	2024-04-13 02:52:18

#	User	Runtime	Language	Date
1	Kiel Dowdle	0.11 s	Kotlin	2021-04-19 00:57:12
2	Phường Lên	0.18 s	Kotlin	2019-11-02 16:53:21
3	Adam Rankin	0.19 s	Kotlin	2023-09-02 03:57:41
4	Stefan Kennedy	0.20 s	Kotlin	2017-12-06 11:30:00
5	Neil Harmon	0.21 s	Kotlin	2019-05-16 14:07:49
6	Hidden user	0.21 s	Kotlin	2020-02-25 02:10:42

#	User	Runtime	Language	Date
1	Shehab Ahmed Hatem	0.00 s	Lua	2023-11-14 16:39:34
2	Zeheng Li	0.00 s	Lua	2023-12-08 09:47:22

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	OCaml	2024-08-16 17:40:13

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-08-07 08:41:49

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-04-30 15:21:36

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2016-11-23 17:58:57

#	User	Runtime	Language	Date
1	Wyatt Wismer	0.02 s	Python 2	2017-01-18 01:48:18
2	Hidden user	0.02 s	Python 2	2017-01-27 04:47:20
3	Vikram Gaur	0.02 s	Python 2	2017-02-04 17:12:52
4	Hubert Teo	0.02 s	Python 2	2017-02-25 09:58:34
5	Kevin Konrad	0.02 s	Python 2	2017-02-26 19:31:13
6	Ashley Stendel	0.02 s	Python 2	2017-04-01 16:13:37
7	Cole Bite	0.02 s	Python 2	2017-04-06 22:32:23
8	Ian Karp	0.02 s	Python 2	2017-04-13 01:47:09
9	Haggai Liu	0.02 s	Python 2	2017-06-17 06:19:13
10	Ken Lee	0.02 s	Python 2	2017-08-01 08:58:51

#	User	Runtime	Language	Date
1	Victor Sui	0.02 s	Python 3	2016-11-05 18:39:55
2	Shaheed Ebrahim	0.02 s	Python 3	2016-11-05 19:24:53
3	Kaleo Shinichi Sato	0.02 s	Python 3	2016-11-05 20:00:33
4	Jan Clarin	0.02 s	Python 3	2016-11-05 20:02:13
5	Isaac Lee	0.02 s	Python 3	2016-11-17 01:08:33
6	Christian Lindeström	0.02 s	Python 3	2017-01-02 19:10:04
7	Asger Hautop Drewsen	0.02 s	Python 3	2017-02-07 13:57:37
8	Savanna Smith	0.02 s	Python 3	2017-02-19 20:22:53
9	Nick Hajek	0.02 s	Python 3	2017-02-20 22:55:41
10	Huang Kenneth	0.02 s	Python 3	2017-03-14 18:46:45

#	User	Runtime	Language	Date
1	Jake Lambdin	0.04 s	Ruby	2018-11-29 23:21:10
2	Kok Dith	0.05 s	Ruby	2021-08-18 08:23:43
3	Conor O'Brien	0.05 s	Ruby	2022-03-08 22:37:14

#	User	Runtime	Language	Date
1	Eric Pinter	0.00 s	Rust	2021-05-23 18:13:46
2	Bas Dirks	0.00 s	Rust	2022-02-01 16:33:36
3	Sindbad Walter	0.00 s	Rust	2023-11-18 01:37:24
4	Louis Bouchard	0.00 s	Rust	2024-11-14 23:05:35
5	Isak Jägberg	0.00 s	Rust	2024-11-19 11:26:22
6	Adam Yaser Sweilem	0.00 s	Rust	2025-03-21 17:23:10
7	Vincent Lagerros	0.00 s	Rust	2025-08-09 19:25:55

#	User	Length	Language	Date
1	Arvid Jonasson	114	APL	2025-06-27 16:14:38

#	User	Length	Language	Date
1	Chenzhang Hu	1460	Bash	2024-04-16 14:32:31

#	User	Length	Language	Date
1	Hidden user	410	C	2017-05-03 11:09:58
2	klimisnotmilk	510	C	2024-03-09 11:09:59
3	Olav Røthe Bakken	552	C	2017-09-20 15:47:25
4	Hidden user	591	C	2021-06-12 08:47:20
5	Sambit Palit	592	C	2020-10-21 17:58:07
6	Ivan Petrov	662	C	2019-07-09 12:50:34
7	louis lin	712	C	2021-02-01 11:54:38
8	Dick Jessen William	787	C	2019-09-15 10:19:23
9	Naveen Kumar S	853	C	2025-04-14 06:06:45
10	Sebastian Hessleklint	924	C	2023-10-11 09:19:06

#	User	Length	Language	Date
1	Thomas Norris	1022	C#	2020-01-10 20:58:12
2	Mateja Roglic	1275	C#	2016-12-02 19:25:17
3	Mouhamad M.M	1428	C#	2025-08-30 17:44:36
4	Henrik Hallbert	1458	C#	2021-12-09 20:49:16
5	Göran Andersson	1544	C#	2022-05-17 15:28:19
6	Khin Nyunt	1779	C#	2017-02-22 15:41:04
7	Denis Benčič	1849	C#	2021-02-16 12:50:46
8	Marko Babic	2021	C#	2016-12-16 17:11:09
9	Yuwono Bangun Nagoro	2055	C#	2020-12-03 16:43:59
10	Ludwig Hedeby	2889	C#	2017-11-27 21:15:39

#	User	Length	Language	Date
1	Ganapathy Sanath Balaji	367	C++	2019-08-08 11:26:31
2	Way Tan	368	C++	2018-11-20 15:17:29
3	Johan Wind	380	C++	2018-03-31 23:34:53
4	Rafael Kristoforus Yanto	391	C++	2025-04-15 04:01:46
5	Clement Oh	392	C++	2023-08-12 17:27:49
6	Yeung Man Tsung	393	C++	2023-01-09 11:00:35
7	Frans Meulenbroeks	401	C++	2024-10-08 07:50:03
8	Spencer Lee	413	C++	2024-01-19 01:09:01
9	Pedro Sponchiado	414	C++	2018-11-10 15:23:09
10	Ásmundur Óskar Ásmundsson	418	C++	2019-03-30 01:03:27

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1246	F#	2022-10-14 10:56:23
2	Emil Boesgaard Nørbjerg	2840	F#	2025-03-21 20:57:21

#	User	Length	Language	Date
1	Hidden user	844	Go	2023-02-13 02:55:25
2	Norbert Voelker	1122	Go	2021-04-24 14:00:46
3	Magix	1508	Go	2020-12-14 03:44:56
4	Ian Howell	1612	Go	2019-09-03 17:52:53

#	User	Length	Language	Date
1	Håkon Flatval	427	Haskell	2018-09-05 13:24:54
2	Hidden user	565	Haskell	2019-12-22 17:13:21
3	Antony Lee	695	Haskell	2017-09-13 21:14:38
4	Jan Hrček	698	Haskell	2021-03-13 12:56:00
5	Brent Yorgey	716	Haskell	2017-10-13 04:35:06
6	Joshua Coward	721	Haskell	2022-02-10 15:45:15
7	Rudy Matela	792	Haskell	2024-05-09 10:51:54
8	Michał Kopeć	826	Haskell	2018-01-17 12:31:36
9	Steinar Simonnes	878	Haskell	2024-03-22 16:38:01
10	Matthew Johnson	1061	Haskell	2017-03-15 16:37:37

#	User	Length	Language	Date
1	Andrew Davis	675	Java	2017-01-18 00:29:16
2	Hidden user	709	Java	2017-02-26 19:10:28
3	Arup Ratan Guha	716	Java	2021-10-05 02:21:48
4	Nicolas Null	742	Java	2020-02-12 05:33:51
5	Zemzgui Youness	744	Java	2018-08-19 17:00:10
6	Doug Goodman	756	Java	2017-09-23 15:22:07
7	Merten Bohn	791	Java	2022-10-30 11:34:29
8	Isaac Mammel	809	Java	2023-09-09 19:13:33
9	Jeffrey Gan	831	Java	2023-11-13 21:21:31
10	Mohammad Naufal Hazim Bin Saharudin	831	Java	2025-05-28 20:53:24

#	User	Length	Language	Date
1	Andoko Chandra	1238	JavaScript (Node.js)	2020-10-20 14:36:31
2	Khin Nyunt	1389	JavaScript (Node.js)	2021-09-26 14:28:52
3	Chris Wong	1396	JavaScript (Node.js)	2022-01-13 15:21:21
4	Christopher Stromberg	3602	JavaScript (Node.js)	2020-02-18 23:08:10

#	User	Length	Language	Date
1	Jimmy Gustafsson	412	JavaScript (SpiderMonkey)	2024-08-02 06:55:18
2	Christian Pilegaard Cederquist	516	JavaScript (SpiderMonkey)	2023-01-18 13:21:15
3	Bjørn Chr. Soltvedt	575	JavaScript (SpiderMonkey)	2016-11-08 23:03:31
4	Peter Kedemo	657	JavaScript (SpiderMonkey)	2017-06-07 16:47:12
5	Johannes Jensen	709	JavaScript (SpiderMonkey)	2020-12-06 07:45:11
6	Peter Menyes	773	JavaScript (SpiderMonkey)	2021-08-30 12:18:26
7	Zach Tschetter	1093	JavaScript (SpiderMonkey)	2023-06-24 04:52:52

#	User	Length	Language	Date
1	Timothy Gaede	1542	Julia	2024-04-13 02:52:18

#	User	Length	Language	Date
1	Adam Rankin	604	Kotlin	2023-09-02 03:57:41
2	Stefan Kennedy	891	Kotlin	2017-12-06 11:30:00
3	Phường Lên	934	Kotlin	2019-11-02 16:53:21
4	Hidden user	1190	Kotlin	2020-02-25 02:10:42
5	Neil Harmon	1878	Kotlin	2019-05-16 14:07:49
6	Kiel Dowdle	2002	Kotlin	2021-04-19 00:57:12

#	User	Length	Language	Date
1	Zeheng Li	370	Lua	2023-12-08 09:47:22
2	Shehab Ahmed Hatem	1144	Lua	2023-11-14 16:39:34

#	User	Length	Language	Date
1	Sebastian Banert	798	OCaml	2024-08-16 17:40:13

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1932	Pascal	2017-08-07 08:41:49

#	User	Length	Language	Date
1	Renate	577	PHP	2021-04-30 15:21:36

#	User	Length	Language	Date
1	Andriy Zyevakov	1064	Prolog	2016-11-23 17:58:57

#	User	Length	Language	Date
1	Lars Åström	359	Python 2	2019-04-25 19:21:13
2	Martin Wan	360	Python 2	2017-11-09 23:19:21
3	Andrei Stoica	380	Python 2	2017-11-25 10:17:54
4	Johan Lyts	380	Python 2	2019-05-13 12:04:51
5	Andreas Björklund	390	Python 2	2020-03-21 14:19:03
6	Cole Bite	391	Python 2	2017-04-06 22:32:23
7	Hubert Teo	413	Python 2	2017-02-25 09:58:34
8	Haggai Liu	418	Python 2	2017-06-17 06:19:13
9	Juho Lee	419	Python 2	2017-12-06 17:05:54
10	Måns Magnusson	437	Python 2	2019-04-26 18:09:57

#	User	Length	Language	Date
1	Thibault Raffaillac	152	Python 3	2024-07-29 21:27:28
2	Michael Goldwasser	164	Python 3	2024-08-21 22:07:56
3	Wouter Dijkstra	192	Python 3	2022-06-13 08:54:00
4	Ahmed Chamseddine	201	Python 3	2024-08-13 22:01:56
5	Noah Hessen Bjerke	210	Python 3	2022-12-26 18:03:59
6	Clement Oh	243	Python 3	2023-11-23 05:13:49
7	Kenneth Jensen	251	Python 3	2022-07-07 16:07:14
8	Ryll Åman	254	Python 3	2025-07-03 09:22:27
9	Alexandre Charland	271	Python 3	2025-02-13 18:28:07
10	Tan Yi Long	281	Python 3	2025-04-29 23:31:55

#	User	Length	Language	Date
1	Kok Dith	586	Ruby	2021-08-18 08:23:43
2	Conor O'Brien	602	Ruby	2022-03-08 22:37:14
3	Jake Lambdin	3435	Ruby	2018-11-29 23:21:10

#	User	Length	Language	Date
1	Vincent Lagerros	706	Rust	2025-08-09 19:25:55
2	Bas Dirks	959	Rust	2022-02-01 16:33:36
3	Adam Yaser Sweilem	1552	Rust	2025-03-21 17:23:10
4	Sindbad Walter	1565	Rust	2023-11-18 01:37:24
5	Eric Pinter	1835	Rust	2021-05-23 18:13:46
6	Isak Jägberg	1852	Rust	2024-11-19 11:26:22
7	Louis Bouchard	2251	Rust	2024-11-14 23:05:35

Solution running time distribution