Problem A
Watering Grass — Problem Statistics

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Submissions	9827
Accepted submissions	2086
Submission ratio	21.23%
Authors	1490
Full solves [?]	1148
Full solve Ratio	77.05%

#	User	Runtime	Language	Date
1	Erik Gustafsson	0.04 s	C	2007-09-14 14:24:56
2	Johannes Svensson	0.04 s	C	2009-09-12 19:04:34
3	Bergur Snorrason	0.04 s	C	2020-11-04 11:08:38
4	Hidden user	0.05 s	C	2011-04-14 19:07:58
5	Achraf Mamdouh	0.05 s	C	2015-05-22 20:44:54
6	Alexander Bilde Pedersen	0.05 s	C	2023-02-10 02:26:07
7	Max McGinty	0.05 s	C	2025-03-27 20:03:46
8	Mats Linander	0.06 s	C	2006-09-17 16:23:51
9	Subham Swastik Dora	0.06 s	C	2017-07-05 15:06:38
10	Josenildo Silva	0.06 s	C	2018-04-01 02:39:03

#	User	Runtime	Language	Date
1	Marat Yuldashev	0.14 s	C#	2022-10-23 20:29:03
2	Nicklas Koch Rasmussen	0.15 s	C#	2024-09-04 16:35:29
3	Mathias Brännström	0.19 s	C#	2022-10-14 13:59:40
4	Andreea Stefan	0.19 s	C#	2022-10-14 14:23:04
5	Jakob Møller-Andersen	0.19 s	C#	2022-10-14 19:07:11
6	Asger Schou Jacobsen	0.21 s	C#	2022-10-14 14:08:36
7	Hjalte Juel Skovrup	0.22 s	C#	2019-12-03 14:47:47
8	Sara Qirko	0.22 s	C#	2022-10-16 20:13:54
9	Jose Ignacio Villa Molina	0.23 s	C#	2024-06-27 12:50:54
10	Oscar Niles	0.25 s	C#	2022-10-13 15:52:31

#	User	Runtime	Language	Date
1	Ludvig Strigeus	0.02 s	C++	2007-11-18 22:16:21
2	Hidden user	0.02 s	C++	2017-06-14 08:42:47
3	Nikolaj Bläser	0.02 s	C++	2019-10-06 22:27:00
4	Otto Stadel Clausen	0.02 s	C++	2019-10-23 20:26:11
5	Garðar Ingvarsson	0.02 s	C++	2020-12-15 12:49:50
6	Erik Nikko	0.02 s	C++	2021-03-29 16:46:20
7	Lukas Rickie	0.02 s	C++	2021-08-29 13:30:58
8	Mikael K Eriksson	0.02 s	C++	2022-10-11 14:14:25
9	Leif Eriksson	0.02 s	C++	2024-02-15 15:26:06
10	Brandon Zhang	0.02 s	C++	2024-08-30 07:59:27

#	User	Runtime	Language	Date
1	MARIA JOSE MORALES AVALOS	0.05 s	Go	2025-04-26 05:17:59
2	Adam Engsig	0.07 s	Go	2021-04-23 23:19:11
3	Hidden user	0.13 s	Go	2022-10-17 11:35:34

#	User	Runtime	Language	Date
1	Brent Yorgey	0.30 s	Haskell	2020-01-02 22:27:48
2	Hidden user	0.83 s	Haskell	2023-06-19 18:04:27
3	Niklas Rosén	0.87 s	Haskell	2014-05-16 01:05:39

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.16 s	Java	2023-06-22 18:33:47
2	Robert Åkemalm	0.18 s	Java	2020-02-17 22:06:09
3	Ryan Tan	0.18 s	Java	2022-06-29 19:47:37
4	Crystal Sharpe	0.25 s	Java	2020-08-19 16:47:18
5	Emil Bak-Møller	0.25 s	Java	2021-09-12 20:46:11
6	Hà Minh Ngọc	0.26 s	Java	2015-10-09 16:59:57
7	Bjørn Dons	0.28 s	Java	2019-01-01 20:29:00
8	Fredrik Persson	0.32 s	Java	2020-02-19 20:21:54
9	Logan Pipes	0.34 s	Java	2023-02-02 03:44:05
10	Samuel Klingström	0.35 s	Java	2017-08-16 01:21:37

#	User	Runtime	Language	Date
1	tannal	0.40 s	JavaScript (Node.js)	2025-06-16 09:19:15
2	Stephanie Keck	0.95 s	JavaScript (Node.js)	2020-02-29 22:48:39

#	User	Runtime	Language	Date
1	Christian Cederquist	0.22 s	JavaScript (SpiderMonkey)	2023-06-30 00:40:38

#	User	Runtime	Language	Date
1	Noszály Csaba	1.03 s	Julia	2025-03-06 21:02:08

#	User	Runtime	Language	Date
1	Adam Rankin	0.84 s	Kotlin	2023-05-08 01:32:10
2	Luca Mueller	1.07 s	Kotlin	2024-09-25 00:08:02
3	Quy Nguyen	1.43 s	Kotlin	2021-04-10 21:35:35

#	User	Runtime	Language	Date
1	Andreas Serra	0.28 s	Python 2	2014-05-11 22:34:46
2	Victor Zheng	0.34 s	Python 2	2017-06-12 22:10:26
3	hvy b	0.41 s	Python 2	2017-09-16 00:40:31
4	Paco Martínez	0.42 s	Python 2	2019-10-13 17:16:21
5	Yupeng Gu	0.51 s	Python 2	2018-05-11 03:38:00
6	John Barczynski	0.55 s	Python 2	2018-02-21 07:35:55
7	Henrik Adolfsson	0.79 s	Python 2	2017-03-17 14:07:31

#	User	Runtime	Language	Date
1	Jack Song	0.17 s	Python 3	2024-10-05 06:46:14
2	Alexander Schiller	0.18 s	Python 3	2024-09-06 17:45:27
3	Hubert Tomaszczak	0.19 s	Python 3	2024-04-11 22:36:13
4	Jacob Molin	0.20 s	Python 3	2025-02-07 14:13:47
5	UTM CS AI	0.21 s	Python 3	2024-08-14 16:52:25
6	bhavin	0.21 s	Python 3	2025-02-07 07:34:48
7	Jonas Ishøj Nielsen	0.23 s	Python 3	2020-09-07 21:15:11
8	Christian Lebeda	0.23 s	Python 3	2020-10-11 16:47:13
9	Deep Patel	0.23 s	Python 3	2024-09-28 15:35:45
10	David Martin Sørensen	0.24 s	Python 3	2024-09-05 16:44:46

#	User	Runtime	Language	Date
1	Frederik Petersen	0.71 s	Ruby	2025-09-07 15:29:46

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2025-05-18 02:37:09
2	Daniel Anker Hermansen	0.03 s	Rust	2023-09-29 20:34:05
3	Hidden user	0.04 s	Rust	2022-11-04 13:25:50
4	Minghao Zhang	0.04 s	Rust	2024-04-26 06:00:02
5	Louis Bouchard	0.04 s	Rust	2024-10-04 08:45:38
6	Emil Hultcrantz	0.04 s	Rust	2025-02-07 14:54:39
7	Albert Rise Nielsen	0.05 s	Rust	2023-09-06 14:55:53
8	Egor Kulikov	0.05 s	Rust	2025-03-18 09:44:04
9	Gustaf Bergmark	0.07 s	Rust	2023-02-10 14:10:12
10	Petter Hansson	1.21 s	Rust	2023-09-27 22:08:41

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Zig	2025-02-07 15:17:39
2	Felix Stenberg	0.05 s	Zig	2025-02-07 16:30:05

#	User	Length	Language	Date
1	Erik Gustafsson	782	C	2007-09-14 12:31:13
2	Subham Swastik Dora	1303	C	2017-07-05 15:06:38
3	Josenildo Silva	1381	C	2018-04-01 02:39:03
4	Achraf Mamdouh	1390	C	2015-05-22 20:44:54
5	Hidden user	1405	C	2024-05-29 18:34:24
6	Hidden user	1492	C	2007-09-12 22:10:40
7	Max McGinty	1659	C	2025-03-27 20:03:46
8	Anton Lindroth	1737	C	2021-10-15 13:41:18
9	Hidden user	1786	C	2011-04-14 19:07:58
10	Alexander Bilde Pedersen	1908	C	2023-02-10 02:26:07

#	User	Length	Language	Date
1	Marat Yuldashev	1816	C#	2022-10-23 20:24:24
2	Jonleif Davidsen	1900	C#	2019-09-20 22:27:09
3	Sara Qirko	2138	C#	2022-10-04 17:56:25
4	Oscar Niles	2473	C#	2022-10-13 15:52:31
5	Andreea Stefan	2543	C#	2022-10-13 10:50:45
6	Niels Ejlersen	2803	C#	2019-11-17 23:46:24
7	Martin Holst	2884	C#	2021-12-08 17:38:11
8	Jakob Møller-Andersen	2905	C#	2022-10-13 22:26:31
9	Jose Ignacio Villa Molina	2944	C#	2024-06-27 12:50:54
10	Hjalte Juel Skovrup	3045	C#	2019-12-03 14:47:47

#	User	Length	Language	Date
1	Jannik Olbrich	653	C++	2019-03-09 17:14:16
2	Emmanuel Anaya	659	C++	2020-11-07 05:48:06
3	Bryan Huang	720	C++	2023-05-02 23:41:50
4	Hyunjun Lee	736	C++	2023-01-12 09:29:53
5	Frederick Pek	738	C++	2021-12-09 04:44:48
6	Modan Han	774	C++	2017-06-10 21:58:33
7	Gen Tamada	794	C++	2023-04-30 07:09:16
8	Abdul Malik Nurrokhman	806	C++	2018-06-05 07:38:57
9	Claire Duong	815	C++	2018-02-28 08:25:16
10	Hidden user	829	C++	2021-06-25 16:06:05

#	User	Length	Language	Date
1	Hidden user	1840	Go	2022-10-17 11:35:34
2	MARIA JOSE MORALES AVALOS	3357	Go	2025-04-26 05:17:59
3	Adam Engsig	5894	Go	2021-04-23 23:19:11

#	User	Length	Language	Date
1	Hidden user	1118	Haskell	2023-06-19 18:04:27
2	Niklas Rosén	1645	Haskell	2014-05-16 01:05:39
3	Brent Yorgey	2917	Haskell	2020-01-02 22:27:48

#	User	Length	Language	Date
1	Doug Goodman	1031	Java	2016-10-15 20:08:10
2	Mark Wen	1068	Java	2021-04-10 21:16:53
3	Kendra Wannamaker	1260	Java	2017-06-11 00:10:01
4	Danniel Alcantara	1309	Java	2024-04-30 02:22:18
5	Kurtis Van Gent	1312	Java	2016-06-16 19:06:53
6	Stephen Royal	1393	Java	2015-08-24 13:46:20
7	Aroldo	1518	Java	2021-12-09 02:54:12
8	Samir Chavez	1592	Java	2021-12-11 21:40:52
9	Hidden user	1592	Java	2022-08-26 08:21:46
10	Quan Chau	1692	Java	2017-12-22 13:42:07

#	User	Length	Language	Date
1	tannal	4310	JavaScript (Node.js)	2025-06-16 09:19:15
2	Stephanie Keck	7112	JavaScript (Node.js)	2020-02-29 22:48:39

#	User	Length	Language	Date
1	Christian Cederquist	1723	JavaScript (SpiderMonkey)	2023-06-30 00:40:38

#	User	Length	Language	Date
1	Noszály Csaba	269	Julia	2025-03-06 21:02:08

#	User	Length	Language	Date
1	Adam Rankin	1449	Kotlin	2023-05-08 01:32:10
2	Luca Mueller	1468	Kotlin	2024-09-25 00:08:02
3	Quy Nguyen	1900	Kotlin	2021-04-10 21:35:35

#	User	Length	Language	Date
1	Victor Zheng	546	Python 2	2017-06-12 22:10:26
2	Yupeng Gu	745	Python 2	2018-05-11 03:38:00
3	Paco Martínez	960	Python 2	2019-10-13 17:16:21
4	Henrik Adolfsson	970	Python 2	2017-03-17 14:07:31
5	hvy b	1891	Python 2	2017-09-16 00:40:31
6	John Barczynski	2010	Python 2	2018-02-21 07:35:55
7	Andreas Serra	2759	Python 2	2014-05-11 22:34:46

#	User	Length	Language	Date
1	Andrew Martinez	291	Python 3	2023-05-05 08:53:34
2	Michael Goldwasser	315	Python 3	2024-09-27 07:42:38
3	Lukas Kerren	344	Python 3	2024-04-10 01:40:56
4	Benjamin Z White	356	Python 3	2023-05-03 13:14:56
5	Eric Wetzel	426	Python 3	2023-05-05 07:56:19
6	Josh Taylor	429	Python 3	2022-09-26 17:57:18
7	Shashank Bhatt	441	Python 3	2023-01-04 06:58:17
8	Victor Zheng	528	Python 3	2025-07-24 21:16:15
9	Peter Stauder	562	Python 3	2024-05-08 20:32:28
10	Gustav Kalander	610	Python 3	2023-08-29 19:21:51

#	User	Length	Language	Date
1	Frederik Petersen	1017	Ruby	2025-09-07 15:29:46

#	User	Length	Language	Date
1	Albert Rise Nielsen	1920	Rust	2023-09-06 14:55:53
2	Minghao Zhang	1957	Rust	2024-04-26 06:00:02
3	Louis Bouchard	2398	Rust	2024-10-04 08:45:38
4	Hidden user	2693	Rust	2022-11-04 13:25:50
5	Emil Hultcrantz	3089	Rust	2025-02-07 14:54:39
6	Petter Hansson	3775	Rust	2023-09-27 22:08:41
7	Vincent Lagerros	4259	Rust	2024-05-18 18:08:00
8	Gustaf Bergmark	5085	Rust	2023-02-10 14:10:12
9	Daniel Anker Hermansen	26985	Rust	2023-09-29 20:34:05
10	Egor Kulikov	35699	Rust	2025-03-18 09:44:04

#	User	Length	Language	Date
1	Hidden user	8734	Zig	2025-02-07 15:17:39
2	Felix Stenberg	8839	Zig	2025-02-07 16:30:05

Solution running time distribution