Problem A
Tabs and spaces — Problem Statistics

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Submissions	531
Accepted submissions	207
Submission ratio	38.98%
Authors	195
Full solves [?]	173
Full solve Ratio	88.72%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2021-12-24 09:32:37

#	User	Runtime	Language	Date
1	Albert Isaksson	0.02 s	C#	2022-01-23 12:08:18
2	Andriy Zyevakov	0.06 s	C#	2024-01-20 11:35:15

#	User	Runtime	Language	Date
1	Norbert Voelker	0.07 s	Go	2021-12-23 22:29:17
2	Frank Endriss	0.08 s	Go	2021-12-27 10:02:27

#	User	Runtime	Language	Date
1	Mason Barnhill	0.00 s	Haskell	2023-08-14 07:23:04
2	Steinar Simonnes	0.00 s	Haskell	2025-07-09 09:16:26
3	Brent Yorgey	0.01 s	Haskell	2021-12-29 23:17:56

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.05 s	Java	2024-04-14 10:18:33
2	Crystal Sharpe	0.06 s	Java	2022-03-16 18:43:25
3	Liam Keliher	0.06 s	Java	2022-03-31 01:19:27
4	Hayagreev Dilip	0.06 s	Java	2023-02-24 16:22:41
5	Jimmy Dinh	0.06 s	Java	2023-02-25 04:10:27
6	Stela Palii	0.07 s	Java	2022-04-13 06:33:19
7	Peter Jin	0.07 s	Java	2023-02-22 23:15:57
8	Lucas Judys	0.11 s	Java	2022-10-23 21:14:09
9	Yatin Kukreja	0.11 s	Java	2023-02-26 04:54:53
10	Crystal Yang	0.11 s	Java	2023-10-20 00:01:37

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2023-02-18 04:50:29
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-07-24 00:20:13

#	User	Runtime	Language	Date
1	Timothy Gaede	0.57 s	Julia	2025-04-25 07:01:51

#	User	Runtime	Language	Date
1	Adam Rankin	0.19 s	Kotlin	2023-09-26 18:54:37

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.03 s	Python 2	2022-01-06 12:55:36
2	Andreas Björklund	0.03 s	Python 2	2022-03-09 21:22:36
3	Ocram Esah	0.04 s	Python 2	2022-04-27 18:21:22

#	User	Runtime	Language	Date
1	Sander Oppen	0.04 s	Python 3	2024-10-22 16:27:00
2	Guk Yi Siong	0.04 s	Python 3	2024-12-24 02:56:05
3	Dave Gallagher	0.04 s	Python 3	2025-01-12 20:03:54
4	Tobias Bessler	0.04 s	Python 3	2025-04-21 16:24:07
5	Manca Sverc	0.04 s	Python 3	2025-05-04 20:01:02
6	Kadin Matotek	0.04 s	Python 3	2025-06-08 01:46:05
7	Ahmed Chamseddine	0.04 s	Python 3	2025-07-01 00:02:12
8	Jiaming Kong	0.04 s	Python 3	2025-08-06 15:19:55
9	Dharanidharan M	0.04 s	Python 3	2025-09-03 16:07:24
10	Noah Hessen Bjerke	0.04 s	Python 3	2025-11-21 11:56:18

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-06-23 10:34:17
2	Hidden user	0.06 s	Ruby	2023-07-20 12:56:10

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-02-05 15:02:33
2	Anton Golov	0.00 s	Rust	2022-02-06 22:53:01
3	Erik Magnusson	0.00 s	Rust	2024-10-16 12:39:53
4	Daniel Anker Hermansen	0.00 s	Rust	2024-11-03 17:47:24

#	User	Length	Language	Date
1	Bergur Snorrason	1806	C	2021-12-24 09:32:37

#	User	Length	Language	Date
1	Albert Isaksson	1538	C#	2022-01-23 12:36:23
2	Andriy Zyevakov	8094	C#	2024-01-20 11:35:15

#	User	Length	Language	Date
1	Grae Yeandle	387	C++	2023-03-29 16:23:59
2	Armen Andreasyan	462	C++	2022-01-02 11:05:16
3	Hyunjun Lee	478	C++	2022-11-24 14:43:14
4	Mikael K Eriksson	486	C++	2022-05-03 14:54:49
5	Johan Wind	487	C++	2025-11-04 23:59:02
6	Alexander Skidanov	502	C++	2024-10-17 11:58:20
7	Dmitry Lyubshin	517	C++	2023-04-13 14:56:46
8	Hidden user	565	C++	2023-05-15 22:47:24
9	Frederick Pek	588	C++	2021-12-27 08:32:17
10	Devin Qu	590	C++	2023-02-27 22:21:11

#	User	Length	Language	Date
1	Norbert Voelker	1076	Go	2021-12-23 22:29:17
2	Frank Endriss	1954	Go	2021-12-27 10:02:27

#	User	Length	Language	Date
1	Steinar Simonnes	481	Haskell	2025-07-09 09:20:16
2	Mason Barnhill	875	Haskell	2023-08-14 07:23:04
3	Brent Yorgey	8036	Haskell	2021-12-29 23:17:56

#	User	Length	Language	Date
1	Doug Goodman	857	Java	2022-01-04 23:27:12
2	Crystal Sharpe	872	Java	2022-03-16 18:43:25
3	Crystal Yang	901	Java	2023-10-20 00:01:37
4	Josh Henderson	938	Java	2022-01-15 23:23:48
5	Peter Jin	1054	Java	2023-02-22 23:15:57
6	Lucas Judys	1171	Java	2022-10-23 21:14:09
7	Stela Palii	1322	Java	2022-04-13 06:33:19
8	Yatin Kukreja	1379	Java	2023-02-26 04:54:53
9	Ross Alvine	1587	Java	2022-01-16 05:36:12
10	Hugo Morvan	1736	Java	2022-01-17 05:58:44

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	357	JavaScript (SpiderMonkey)	2023-02-18 04:50:29
2	Christian Pilegaard Cederquist	540	JavaScript (SpiderMonkey)	2023-07-24 00:20:13

#	User	Length	Language	Date
1	Timothy Gaede	1268	Julia	2025-04-25 07:01:51

#	User	Length	Language	Date
1	Adam Rankin	887	Kotlin	2023-09-26 18:54:37

#	User	Length	Language	Date
1	Andreas Björklund	275	Python 2	2022-03-09 21:22:36
2	Yanmarshus Bachtiar	475	Python 2	2022-01-06 12:55:36
3	Ocram Esah	868	Python 2	2022-04-27 18:21:22

#	User	Length	Language	Date
1	Peter Jin	155	Python 3	2023-02-22 23:44:19
2	Ahmed Chamseddine	217	Python 3	2025-07-01 00:02:12
3	Bjørn Dons	257	Python 3	2022-05-24 20:53:26
4	Nicholas Russell Saerang	279	Python 3	2023-08-21 02:54:44
5	Brandon Foong	289	Python 3	2023-04-08 23:57:57
6	Casper Rysgaard	299	Python 3	2022-01-25 11:41:57
7	Guk Yi Siong	299	Python 3	2024-12-24 02:56:05
8	Arnav Sastry	300	Python 3	2023-05-28 05:09:14
9	Miorel Palii	313	Python 3	2022-03-16 06:48:17
10	Tobias Bessler	317	Python 3	2025-04-21 16:24:07

#	User	Length	Language	Date
1	Thomas Feld	114	Ruby	2023-06-23 10:39:01
2	Hidden user	556	Ruby	2023-07-20 12:56:10

#	User	Length	Language	Date
1	Anton Golov	1681	Rust	2022-02-06 22:53:01
2	Bas Dirks	2198	Rust	2022-02-05 15:02:33
3	Erik Magnusson	4429	Rust	2024-10-16 12:39:53
4	Daniel Anker Hermansen	12281	Rust	2024-11-03 17:47:24

Solution running time distribution