Problem A
Mountainous Palindromic Subarray — Problem Statistics

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Submissions	989
Accepted submissions	361
Submission ratio	36.50%
Authors	312
Full solves [?]	275
Full solve Ratio	88.14%

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.02 s	C	2025-05-14 08:46:13
2	Nick Hargrove	0.11 s	C	2022-03-21 23:46:14

#	User	Runtime	Language	Date
1	Joop van der Heiden	0.17 s	C#	2023-11-15 22:17:11
2	Jakub Jarząbek	0.18 s	C#	2022-01-31 21:08:25
3	Andriy Zyevakov	0.18 s	C#	2024-11-18 05:15:10
4	Małgosia Jarosz	0.21 s	C#	2022-03-18 17:51:17
5	(Jim) Ngoc Tin Le	0.37 s	C#	2022-01-29 20:51:08
6	Danilo Francisco Meirelles Peres	0.47 s	C#	2022-01-30 10:54:50
7	Koen Timmermans	0.48 s	C#	2022-09-14 18:10:02
8	Steven Heinen	0.48 s	C#	2022-09-14 18:49:11
9	Mihai Spătariu	0.48 s	C#	2022-09-14 18:51:17
10	Laurens Fijn van Draat	0.49 s	C#	2022-09-14 17:26:38

#	User	Runtime	Language	Date
1	Gengchen Tuo	0.03 s	C++	2021-08-14 17:09:18
2	Frank Endriss	0.03 s	C++	2022-01-26 21:13:10
3	Moses Mayer	0.04 s	C++	2023-06-24 12:09:07
4	Andrew Polizzotto	0.06 s	C++	2022-05-24 07:45:29
5	Riley Borgard	0.09 s	C++	2021-08-14 17:02:48
6	Peter Kwak	0.09 s	C++	2021-08-14 17:05:23
7	Saujas Nandi	0.09 s	C++	2021-08-14 17:08:22
8	Joseph Durie	0.09 s	C++	2021-08-14 17:09:24
9	Ramchandra Apte	0.09 s	C++	2021-08-14 17:09:59
10	Victor Tao	0.09 s	C++	2021-08-14 17:13:22

#	User	Runtime	Language	Date
1	Norbert Voelker	0.15 s	Go	2022-01-26 23:36:27

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.10 s	Java	2025-05-14 08:41:43
2	Alvin Lee	0.11 s	Java	2025-08-27 23:24:17
3	Kol Greenbaum	0.12 s	Java	2024-01-12 22:09:51
4	Bjørn Dons	0.15 s	Java	2023-01-06 22:16:27
5	Ray Bai	0.16 s	Java	2021-08-14 17:08:58
6	Pim Agterberg	0.28 s	Java	2022-09-14 18:26:12
7	Bas te Kolste	0.28 s	Java	2022-09-14 18:45:46
8	Sofia Yang	0.28 s	Java	2024-03-16 04:07:21
9	Jeffrey H.	0.29 s	Java	2023-09-27 01:34:53
10	Rohan Menon	0.29 s	Java	2024-01-15 02:04:21

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.34 s	JavaScript (SpiderMonkey)	2022-03-24 21:55:45
2	Christian Pilegaard Cederquist	0.40 s	JavaScript (SpiderMonkey)	2023-08-07 19:12:37

#	User	Runtime	Language	Date
1	Jacob Huebner	0.33 s	Kotlin	2022-04-26 00:19:18
2	Adam Rankin	0.50 s	Kotlin	2023-11-09 19:31:10

#	User	Runtime	Language	Date
1	Ram Basnet	0.19 s	Python 3	2023-12-30 00:15:49
2	Rolf P	0.23 s	Python 3	2022-09-14 17:41:49
3	Hidden user	0.23 s	Python 3	2025-09-03 17:07:19
4	Scott Driggers	0.25 s	Python 3	2021-08-14 18:07:58
5	Miorel Palii	0.25 s	Python 3	2022-03-24 20:23:45
6	Ryan Farrell	0.25 s	Python 3	2022-05-18 01:42:33
7	Gabriel Guerra Trigo	0.26 s	Python 3	2024-04-07 21:48:57
8	Constantijn Dekker	0.27 s	Python 3	2022-05-28 21:29:18
9	Andreas Björklund	0.30 s	Python 3	2022-04-16 05:42:54
10	Ahmed Siadomar	0.32 s	Python 3	2024-05-19 19:10:34

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.02 s	Rust	2024-09-22 02:24:46
2	Bas Dirks	0.09 s	Rust	2022-02-07 17:39:44

#	User	Length	Language	Date
1	Guangyi Zhou	923	C	2025-05-14 08:46:13
2	Nick Hargrove	1018	C	2022-03-21 23:46:14

#	User	Length	Language	Date
1	Laurens Fijn van Draat	933	C#	2022-09-14 17:26:38
2	Mihai Spătariu	1168	C#	2022-09-14 18:51:17
3	Ivan Burkett	1327	C#	2023-04-12 02:03:07
4	Danilo Francisco Meirelles Peres	1349	C#	2022-01-30 10:54:50
5	Joel Fisser	1488	C#	2022-09-14 18:51:04
6	Frank Tabak	1819	C#	2022-09-19 08:46:47
7	Joop van der Heiden	2387	C#	2023-11-15 22:17:11
8	Steven Heinen	2861	C#	2022-09-14 18:49:11
9	Koen Timmermans	3060	C#	2022-09-14 18:10:02
10	Jakub Jarząbek	6888	C#	2022-01-31 21:08:25

#	User	Length	Language	Date
1	Artemis Ngoh	326	C++	2023-10-10 21:58:45
2	Lawry Sorenson	411	C++	2023-05-24 22:00:09
3	Zac Friggstad	415	C++	2021-08-14 17:10:49
4	Thomas Li	418	C++	2023-04-07 23:19:48
5	Yung Chi Li	420	C++	2023-04-22 16:04:49
6	Chris Trevisan	453	C++	2022-05-15 16:23:06
7	Hidden user	483	C++	2023-04-29 14:52:02
8	Jerry Xu	483	C++	2024-05-08 03:38:56
9	Andrew He	485	C++	2021-08-14 17:10:01
10	Cameron Custer	492	C++	2022-03-23 02:40:46

#	User	Length	Language	Date
1	Norbert Voelker	1360	Go	2022-01-26 23:41:38

#	User	Length	Language	Date
1	Saathvik Selvan	953	Java	2023-05-29 04:21:41
2	Isaac Mammel	999	Java	2023-09-09 23:02:49
3	Brandon Gorski	1027	Java	2022-04-22 20:32:46
4	Sofia Yang	1057	Java	2024-03-16 04:07:21
5	Jeffrey H.	1096	Java	2023-09-27 01:34:53
6	Kaden Hardesty	1237	Java	2024-01-16 22:00:23
7	David Harmeyer	1320	Java	2021-08-14 17:06:32
8	Abdelrahman Mokbel	1338	Java	2022-05-24 23:48:33
9	Bas te Kolste	1409	Java	2022-09-14 18:45:46
10	Antonio Blanca	1540	Java	2024-01-19 22:50:42

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	544	JavaScript (SpiderMonkey)	2022-03-24 21:55:45
2	Christian Pilegaard Cederquist	890	JavaScript (SpiderMonkey)	2023-08-07 19:12:37

#	User	Length	Language	Date
1	Adam Rankin	611	Kotlin	2023-11-09 19:31:10
2	Jacob Huebner	2053	Kotlin	2022-04-26 00:19:18

#	User	Length	Language	Date
1	Chris Kopp	117	Python 3	2023-11-01 06:28:37
2	Nicholas Russell Saerang	143	Python 3	2024-06-30 05:47:43
3	Yong Mao	205	Python 3	2025-02-28 04:55:46
4	Tobias Bessler	325	Python 3	2024-04-28 00:29:41
5	ALPHONSE DESIRE JUNIOR ENAMA	340	Python 3	2025-02-03 00:15:17
6	Jason Oliphant	340	Python 3	2025-04-12 17:33:56
7	Clement Oh	351	Python 3	2024-01-04 12:43:49
8	Aaruni Gupta	352	Python 3	2025-08-28 21:55:13
9	William Liao	406	Python 3	2023-09-09 22:49:47
10	Grady Kenix	406	Python 3	2024-03-17 14:14:31

#	User	Length	Language	Date
1	Bas Dirks	1218	Rust	2022-02-07 17:43:01
2	Vincent Lagerros	17447	Rust	2024-09-22 02:24:46

Solution running time distribution