Problem A
Kaleidoscopic Palindromes — Problem Statistics

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Submissions	1455
Accepted submissions	669
Submission ratio	45.98%
Authors	564
Accepted authors	510
Author ratio	90.43%

#	User	Runtime	Language	Date
1	Arne Philipeit	0.30 s	C	2019-12-22 10:25:11
2	Nathan Helgeson	0.31 s	C	2018-11-07 18:36:02
3	Reepca Russelstein	0.31 s	C	2019-11-14 13:34:32
4	Ivan Petrov	1.15 s	C	2019-07-11 14:17:54

#	User	Runtime	Language	Date
1	Benjamin Bilbeau	0.07 s	C#	2018-11-18 20:04:12

#	User	Runtime	Language	Date
1	Atli Fannar Franklín	0.00 s	C++	2018-11-05 21:24:47
2	Kuan Wei Heng	0.00 s	C++	2018-12-01 14:35:46
3	Evan Rose	0.00 s	C++	2020-07-09 07:59:56
4	Adam Jamil	0.00 s	C++	2021-04-04 20:44:47
5	Ian DeHaan	0.00 s	C++	2022-05-03 20:22:47
6	Francisco Bruno Dias Ribeiro da Silva	0.00 s	C++	2022-10-21 00:37:20
7	Brad	0.00 s	C++	2025-02-10 08:56:59
8	Saujas Nandi	0.01 s	C++	2018-11-03 19:11:57
9	Bay Wei Heng	0.01 s	C++	2018-12-04 13:02:09
10	Ng Tek In	0.01 s	C++	2019-02-04 00:23:31

#	User	Runtime	Language	Date
1	Reepca Russelstein	0.02 s	Common Lisp	2019-11-14 18:38:29
2	Hidden user	0.09 s	Common Lisp	2019-08-04 08:42:22

#	User	Runtime	Language	Date
1	Arne Philipeit	1.01 s	Go	2019-12-20 23:14:48
2	Norbert Voelker	1.82 s	Go	2021-09-20 01:36:12

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2023-06-05 18:11:00
2	Steinar Simonnes	0.00 s	Haskell	2025-06-05 14:20:40
3	Brent Yorgey	0.01 s	Haskell	2020-05-04 17:28:28
4	Quinn Flavel	2.39 s	Haskell	2020-12-16 22:59:09

#	User	Runtime	Language	Date
1	Emil Bak-Møller	0.09 s	Java	2019-04-18 13:40:47
2	Bjørn Dons	0.18 s	Java	2018-12-19 02:59:11
3	Zhe Yang	0.23 s	Java	2018-11-03 19:18:11
4	Billy Quiroga	0.26 s	Java	2018-11-08 21:16:42
5	Joshua Fair	0.29 s	Java	2018-11-08 20:35:19
6	Taras Romanyuk	0.29 s	Java	2024-11-11 12:37:19
7	Darrin Wiley	0.30 s	Java	2018-11-03 18:48:46
8	Hidden user	0.36 s	Java	2018-11-05 19:01:25
9	Aldo Chow	0.37 s	Java	2018-11-03 18:55:36
10	Crystal Sharpe	0.45 s	Java	2020-07-23 08:43:37

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2018-12-30 23:52:53
2	Christian Cederquist	2.90 s	JavaScript (SpiderMonkey)	2023-06-12 16:54:53

#	User	Runtime	Language	Date
1	Timothy Gaede	1.41 s	Julia	2024-05-03 05:00:22

#	User	Runtime	Language	Date
1	Filip Belik	1.07 s	Kotlin	2019-10-31 02:45:01
2	Hidden user	1.07 s	Kotlin	2019-11-01 13:00:34
3	Phường Lên	1.35 s	Kotlin	2019-10-31 06:21:36
4	Benjamin Laurence Erickson	1.41 s	Kotlin	2018-12-01 18:37:50

#	User	Runtime	Language	Date
1	Hermon Mulat	0.04 s	Python 2	2018-11-09 20:26:00
2	Bertrand Evertz	0.06 s	Python 2	2020-12-21 20:56:36
3	Andreas Björklund	0.69 s	Python 2	2021-11-24 20:54:05
4	Johan Lyts	0.73 s	Python 2	2020-03-24 13:50:52
5	Måns Magnusson	1.12 s	Python 2	2018-11-07 22:59:14
6	Maj Stenmark	1.13 s	Python 2	2018-11-07 22:59:27
7	Lars Åström	1.17 s	Python 2	2018-11-07 13:06:22
8	Björn Magnusson	1.17 s	Python 2	2018-11-09 18:43:23
9	Godmar Back	1.21 s	Python 2	2019-10-27 04:06:07
10	Arnav Sastry	1.22 s	Python 2	2019-05-20 04:41:08

#	User	Runtime	Language	Date
1	Kevin Chen	0.02 s	Python 3	2018-11-09 04:16:14
2	Jeffrey Wang	0.02 s	Python 3	2019-09-12 03:14:51
3	Dillon Lue	0.02 s	Python 3	2019-09-12 03:19:28
4	Meta Novitia	0.02 s	Python 3	2019-12-20 14:14:25
5	Isaac Lee	0.03 s	Python 3	2019-03-15 20:03:03
6	John Kusner	0.05 s	Python 3	2019-11-02 23:41:43
7	Tribikram Adhikari	0.06 s	Python 3	2018-11-09 01:48:45
8	Ron Smith	0.06 s	Python 3	2018-11-09 06:54:27
9	Andrew Fales	0.06 s	Python 3	2020-11-14 19:52:42
10	Zach Hacking	0.06 s	Python 3	2023-10-14 22:52:25

#	User	Runtime	Language	Date
1	Miorel Palii	0.98 s	Ruby	2022-03-16 06:13:56
2	Thomas Feld	2.98 s	Ruby	2023-08-21 12:20:31

#	User	Runtime	Language	Date
1	Bas Dirks	0.31 s	Rust	2022-05-28 12:51:18
2	Daniel Anker Hermansen	0.32 s	Rust	2023-05-23 11:16:53
3	Frank Endriss	0.50 s	Rust	2024-07-06 09:24:49
4	Oskar Eriksson	0.70 s	Rust	2023-10-28 12:53:10
5	Roman Yasinovskyy	0.87 s	Rust	2019-05-18 04:06:36

#	User	Length	Language	Date
1	Nathan Helgeson	765	C	2018-11-07 18:36:02
2	Reepca Russelstein	826	C	2019-11-14 13:34:32
3	Arne Philipeit	1153	C	2019-12-22 10:44:27
4	Ivan Petrov	1399	C	2019-07-11 14:17:54

#	User	Length	Language	Date
1	Benjamin Bilbeau	25758	C#	2018-11-18 20:04:12

#	User	Length	Language	Date
1	鹿目圆	396	C++	2018-11-25 06:24:25
2	Grae Yeandle	398	C++	2021-03-21 17:23:51
3	Zihan Wang	446	C++	2019-10-26 19:56:11
4	Kevin Sun	456	C++	2018-11-05 01:25:37
5	Hengjie Zhang	466	C++	2019-10-26 19:43:46
6	Zhuoli Xie	470	C++	2020-10-31 20:26:30
7	a_b__c	477	C++	2021-02-09 06:27:43
8	Zhongnian Tao	539	C++	2021-11-13 19:41:33
9	Leonardo Blanger	541	C++	2021-02-26 00:35:38
10	人外沙耶	542	C++	2023-12-15 19:37:53

#	User	Length	Language	Date
1	Reepca Russelstein	369	Common Lisp	2019-11-14 12:36:34
2	Hidden user	999	Common Lisp	2019-08-04 07:51:08

#	User	Length	Language	Date
1	Arne Philipeit	433	Go	2019-12-20 23:14:48
2	Norbert Voelker	1152	Go	2021-09-20 01:20:51

#	User	Length	Language	Date
1	Steinar Simonnes	642	Haskell	2025-06-05 14:10:15
2	Hidden user	665	Haskell	2023-06-05 17:50:38
3	Brent Yorgey	990	Haskell	2020-05-04 12:55:43
4	Quinn Flavel	1153	Haskell	2020-12-16 22:59:09

#	User	Length	Language	Date
1	Kevin Xu	652	Java	2020-10-31 21:06:14
2	Hrishikesh Srirangam	707	Java	2020-10-31 20:15:08
3	Kanaan Macias	711	Java	2020-10-31 20:03:32
4	Calvin Godfrey	715	Java	2019-10-26 21:43:24
5	Arjun Vikram	719	Java	2020-10-31 21:20:27
6	RadCon	734	Java	2020-10-31 19:58:01
7	Joseph Kendall-Morwick	741	Java	2018-11-03 21:44:05
8	Yuki Tareyanagi	750	Java	2019-11-02 04:54:53
9	Mark Braganza	758	Java	2019-10-26 21:42:08
10	Keith Massey	784	Java	2018-11-04 01:24:14

#	User	Length	Language	Date
1	Christian Cederquist	1195	JavaScript (SpiderMonkey)	2023-06-12 16:54:53
2	Bjørn Chr. Soltvedt	21365	JavaScript (SpiderMonkey)	2018-12-30 23:52:53

#	User	Length	Language	Date
1	Timothy Gaede	1136	Julia	2024-05-03 05:00:22

#	User	Length	Language	Date
1	Hidden user	744	Kotlin	2019-11-01 13:00:34
2	Filip Belik	798	Kotlin	2019-10-31 02:45:01
3	Phường Lên	898	Kotlin	2019-10-31 06:21:36
4	Benjamin Laurence Erickson	1373	Kotlin	2018-12-01 18:37:50

#	User	Length	Language	Date
1	Thomas Feld	271	Python 2	2019-12-09 13:07:37
2	Arnav Sastry	410	Python 2	2019-05-20 04:41:08
3	Andreas Björklund	448	Python 2	2021-11-24 20:54:05
4	Lars Åström	494	Python 2	2018-11-07 13:06:22
5	Björn Magnusson	494	Python 2	2018-11-09 18:43:23
6	Anh Nguyen	502	Python 2	2019-10-26 22:22:42
7	Jason Cannon	518	Python 2	2019-10-14 23:20:32
8	Godmar Back	519	Python 2	2019-10-27 04:06:07
9	Måns Magnusson	556	Python 2	2018-11-07 22:59:14
10	mike	602	Python 2	2018-11-03 18:22:36

#	User	Length	Language	Date
1	Lee Isaac	183	Python 3	2024-02-01 17:33:20
2	Peter Stauder	196	Python 3	2023-01-09 20:52:19
3	Jason Clarke	246	Python 3	2024-02-20 17:04:18
4	Nicholas Russell Saerang	302	Python 3	2023-10-04 06:44:11
5	Hidden user	311	Python 3	2022-11-02 00:48:06
6	Chris Kopp	317	Python 3	2023-09-25 01:18:12
7	Ahmed Chamseddine	317	Python 3	2024-09-18 14:13:58
8	Sidharth Pillai	320	Python 3	2023-10-28 23:54:13
9	Zsolt Németh	329	Python 3	2024-05-29 14:47:03
10	Noah Hessen Bjerke	347	Python 3	2024-04-03 00:25:28

#	User	Length	Language	Date
1	Thomas Feld	79	Ruby	2023-08-21 12:20:31
2	Miorel Palii	273	Ruby	2022-03-16 06:13:56

#	User	Length	Language	Date
1	Roman Yasinovskyy	864	Rust	2019-05-18 04:06:36
2	Oskar Eriksson	1055	Rust	2023-10-28 12:53:10
3	Bas Dirks	1162	Rust	2022-05-28 12:29:38
4	Frank Endriss	2137	Rust	2024-07-06 09:24:49
5	Daniel Anker Hermansen	19900	Rust	2023-05-23 11:16:53

Solution running time distribution