Problem A
How do Spiders Walk on Water? — Problem Statistics

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Submissions	299
Accepted submissions	65
Submission ratio	21.74%
Authors	46
Full solves [?]	30
Full solve Ratio	65.22%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.10 s	C	2019-07-25 16:45:01
2	Sabit Zahin	0.12 s	C	2017-01-26 23:03:39

#	User	Runtime	Language	Date
1	Vincent Tandya	0.01 s	C++	2019-12-15 06:19:09
2	NINGYI ZHANG	0.01 s	C++	2021-12-13 01:45:56
3	Jeremy Lim	0.01 s	C++	2024-10-23 03:52:35
4	Ramy Masalha	0.02 s	C++	2017-07-04 14:25:56
5	Mårten Wiman	0.03 s	C++	2016-10-18 19:30:48
6	Marco Sorbi	0.03 s	C++	2021-03-30 17:21:47
7	Brian Riccardi	0.05 s	C++	2020-10-14 17:15:28
8	Hidden user	0.05 s	C++	2024-12-31 16:21:29
9	Nick Wu	0.07 s	C++	2016-10-20 07:23:35
10	insu Kim	0.07 s	C++	2025-04-29 07:32:05

#	User	Runtime	Language	Date
1	Hidden user	0.80 s	Java	2021-03-20 23:56:35

#	User	Runtime	Language	Date
1	Hidden user	0.10 s	Python 2	2016-10-18 22:55:01
2	Dmitry Lyubshin	0.20 s	Python 2	2018-08-29 10:43:11
3	Haggai Liu	0.52 s	Python 2	2017-07-18 07:29:42

#	User	Runtime	Language	Date
1	Torstein Barvik Molstad	0.11 s	Python 3	2025-12-30 17:02:37
2	Ivar Lee Fevang	0.11 s	Python 3	2026-01-01 01:44:29
3	Noah Hessen Bjerke	0.11 s	Python 3	2026-01-04 12:54:57
4	Ian DeHaan	0.16 s	Python 3	2020-05-30 23:07:16
5	김주원	0.17 s	Python 3	2025-08-20 14:00:00

#	User	Runtime	Language	Date
1	TAMREF Woodencompass	0.03 s	Rust	2024-10-08 10:49:58

#	User	Length	Language	Date
1	Sabit Zahin	1467	C	2017-01-26 23:03:39
2	Ivan Petrov	2843	C	2019-07-25 16:45:01

#	User	Length	Language	Date
1	Josenildo Silva	1021	C++	2018-07-28 00:26:07
2	Brian Riccardi	1168	C++	2020-10-14 17:14:10
3	Jeremy Lim	1217	C++	2024-10-24 18:38:37
4	Francesco Milizia	1221	C++	2017-09-09 17:44:48
5	Alexander Skidanov	1285	C++	2025-01-03 17:31:34
6	Sabit Zahin	1467	C++	2017-01-26 23:03:07
7	insu Kim	1478	C++	2025-04-29 07:32:05
8	Florian Cliquet	1532	C++	2024-11-21 02:13:19
9	Mårten Wiman	1580	C++	2016-10-18 19:30:48
10	Nick Wu	1673	C++	2016-10-20 07:23:35

#	User	Length	Language	Date
1	Hidden user	3913	Java	2021-03-20 23:56:35

#	User	Length	Language	Date
1	Haggai Liu	843	Python 2	2017-07-18 07:29:42
2	Dmitry Lyubshin	1043	Python 2	2018-08-29 10:43:11
3	Hidden user	1078	Python 2	2016-10-18 22:55:01

#	User	Length	Language	Date
1	김주원	758	Python 3	2025-08-20 14:49:43
2	Ian DeHaan	1117	Python 3	2020-03-18 03:21:23
3	Torstein Barvik Molstad	1417	Python 3	2025-12-30 17:03:36
4	Noah Hessen Bjerke	1417	Python 3	2026-01-04 12:54:57
5	Ivar Lee Fevang	1459	Python 3	2026-01-01 01:44:29

#	User	Length	Language	Date
1	TAMREF Woodencompass	5573	Rust	2024-10-08 10:49:58

Solution running time distribution