Problem D
Balls and Needles — Problem Statistics

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Submissions	1546
Accepted submissions	490
Submission ratio	31.69%
Authors	372
Full solves [?]	319
Full solve Ratio	85.75%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.13 s	C	2019-06-07 09:01:02
2	Sanjiv Dinakar	0.14 s	C	2023-06-07 12:01:26

#	User	Runtime	Language	Date
1	Hamilton Wang	0.06 s	C++	2022-10-28 02:16:33
2	Prabowo Djonatan	0.08 s	C++	2017-10-28 05:23:26
3	Ryan Chew	0.08 s	C++	2019-07-17 18:06:08
4	Hidden user	0.08 s	C++	2019-08-08 21:08:33
5	Harrison Shen	0.08 s	C++	2020-07-15 02:40:48
6	Giada Franz	0.09 s	C++	2017-08-18 00:18:51
7	Ngọc Hải Đinh	0.09 s	C++	2017-10-28 04:54:58
8	Jakob Nogler	0.09 s	C++	2018-11-21 17:46:08
9	Brandon Zhang	0.09 s	C++	2023-04-26 08:47:16
10	Leo Lee	0.09 s	C++	2024-03-12 05:18:47

#	User	Runtime	Language	Date
1	Norbert Voelker	0.34 s	Go	2021-12-19 23:06:46

#	User	Runtime	Language	Date
1	Ryan Yates	0.87 s	Haskell	2019-05-09 02:18:06

#	User	Runtime	Language	Date
1	Bjørn Dons	0.42 s	Java	2023-04-22 21:38:01
2	Mitch Price	0.43 s	Java	2017-04-01 23:48:55
3	Martijn Muijsers	0.49 s	Java	2017-09-22 12:09:35
4	Martin Jakobsson	0.52 s	Java	2018-05-18 12:13:18
5	Benjamin Reidys	0.57 s	Java	2019-06-09 00:13:13
6	Nick Wu	0.64 s	Java	2017-04-02 22:34:39
7	Noah Goldsmid	0.64 s	Java	2017-10-03 20:26:35
8	Daniel Kun Zhang	0.64 s	Java	2025-03-27 05:13:34
9	Darrin Wiley	0.66 s	Java	2017-07-22 19:20:18
10	Taras Romanyuk	0.68 s	Java	2025-03-05 00:39:41

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	1.62 s	JavaScript (SpiderMonkey)	2020-10-27 16:00:35

#	User	Runtime	Language	Date
1	Andreas Björklund	0.26 s	Python 2	2019-01-01 14:36:12
2	Lars Åström	0.32 s	Python 2	2019-10-29 14:18:47
3	Björn Magnusson	0.32 s	Python 2	2019-11-07 19:43:30
4	Maj Stenmark	0.33 s	Python 2	2018-05-19 15:12:16
5	Harry Smidt	0.41 s	Python 2	2019-11-08 21:17:44
6	Cian Ruane	0.42 s	Python 2	2018-04-12 12:48:26
7	David Tubridy	0.43 s	Python 2	2018-07-04 22:52:20

#	User	Runtime	Language	Date
1	bhavin	0.29 s	Python 3	2025-03-28 01:39:21
2	Jonathan Cederlund	0.32 s	Python 3	2023-04-08 14:18:19
3	Aditya Behrani	0.33 s	Python 3	2022-10-28 03:59:58
4	Avantika Shah	0.33 s	Python 3	2024-03-22 04:40:50
5	Caleb Dastrup	0.34 s	Python 3	2025-02-01 20:37:28
6	Pedro Sugiyama	0.35 s	Python 3	2022-10-28 00:01:19
7	William Kettleborough	0.36 s	Python 3	2024-03-08 21:26:48
8	Jayden Lee	0.42 s	Python 3	2025-03-27 22:15:38
9	Casper Rysgaard	0.43 s	Python 3	2023-10-06 14:03:27
10	Sarah Sirriyeh	0.43 s	Python 3	2025-06-01 23:19:17

#	User	Length	Language	Date
1	Sanjiv Dinakar	8885	C	2023-06-07 12:01:26
2	Ivan Petrov	18749	C	2019-06-07 09:01:02

#	User	Length	Language	Date
1	Teikn Smith	853	C++	2024-08-30 01:50:39
2	Kush Nayak	1106	C++	2024-03-20 17:44:41
3	James Tan	1196	C++	2024-03-09 15:45:59
4	Mihai Andreescu	1204	C++	2017-04-01 21:33:24
5	Andres Leonel Juarez Careaga	1330	C++	2021-05-18 15:40:22
6	Josenildo Silva	1362	C++	2018-08-03 03:42:01
7	Filippo Baroni	1478	C++	2017-08-03 16:55:06
8	Johan Wind	1493	C++	2018-05-15 15:20:33
9	Jose Pablo	1500	C++	2020-09-01 12:43:00
10	Gabriele Masina	1510	C++	2019-12-28 21:39:46

#	User	Length	Language	Date
1	Norbert Voelker	4269	Go	2021-12-19 23:13:47

#	User	Length	Language	Date
1	Ryan Yates	1386	Haskell	2019-05-09 02:18:06

#	User	Length	Language	Date
1	Walter Han	2089	Java	2019-10-01 06:42:29
2	Paolo Pellizzoni	2271	Java	2019-12-12 20:26:08
3	Isaak Coleman	2437	Java	2019-12-02 05:23:33
4	Peter Jin	2685	Java	2022-10-19 22:35:36
5	Mitch Price	2863	Java	2017-04-01 23:48:55
6	Doug Goodman	2920	Java	2017-09-03 17:13:06
7	Noah Goldsmid	3115	Java	2017-10-03 20:26:35
8	Darrin Wiley	3423	Java	2017-07-22 19:20:18
9	Tuan Minh Pham	3501	Java	2025-03-16 02:42:47
10	Wouter Kool	3707	Java	2018-11-20 17:37:47

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	3247	JavaScript (SpiderMonkey)	2020-10-27 16:00:35

#	User	Length	Language	Date
1	Cian Ruane	1473	Python 2	2018-04-12 12:48:26
2	David Tubridy	1524	Python 2	2018-07-04 22:52:20
3	Andreas Björklund	1574	Python 2	2019-01-01 14:36:12
4	Lars Åström	1726	Python 2	2019-10-29 14:18:47
5	Björn Magnusson	1726	Python 2	2019-11-07 19:43:30
6	Harry Smidt	1853	Python 2	2019-11-08 21:17:44
7	Maj Stenmark	1961	Python 2	2018-05-19 15:12:16

#	User	Length	Language	Date
1	Peter Jin	499	Python 3	2024-03-19 20:09:50
2	Ahmed Chamseddine	546	Python 3	2025-06-19 00:00:21
3	Davis Robertson	901	Python 3	2019-12-15 06:23:07
4	Godmar Back	969	Python 3	2024-09-21 00:16:35
5	Zac Friggstad	1022	Python 3	2020-09-10 18:45:09
6	Levi Tourinho	1024	Python 3	2025-06-21 11:12:48
7	Casper Rysgaard	1106	Python 3	2023-10-06 14:03:27
8	William Kettleborough	1127	Python 3	2024-03-22 07:11:40
9	Alex Liu	1158	Python 3	2024-03-19 22:24:23
10	Caleb Dastrup	1165	Python 3	2025-02-01 20:37:28

Solution running time distribution