Problem A
Problem Classification — Problem Statistics

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Submissions	2000
Accepted submissions	745
Submission ratio	37.25%
Authors	666
Full solves [?]	594
Full solve Ratio	89.19%

#	User	Runtime	Language	Date
1	Mirel Cosulschi	0.00 s	C	2025-03-29 14:30:02
2	Sambit Palit	0.01 s	C	2020-11-13 20:30:46

#	User	Runtime	Language	Date
1	Klas af Geijerstam	0.03 s	C#	2018-02-03 15:11:28
2	Marek	0.04 s	C#	2020-10-14 09:04:14
3	Jakub Jarząbek	0.04 s	C#	2020-10-16 20:49:02
4	Ong Cheng Geng	0.05 s	C#	2020-08-08 11:02:50
5	Henrik Hallbert	0.06 s	C#	2019-11-02 18:58:29
6	Andrzej Krajniak	0.06 s	C#	2020-10-14 06:04:37
7	Askar Rakhimzhanov	0.07 s	C#	2020-10-18 00:07:50
8	Yuwono Bangun Nagoro	0.07 s	C#	2022-08-18 15:02:00
9	Jan Matthiessen	0.08 s	C#	2020-08-25 17:39:01

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Common Lisp	2019-07-17 04:44:26

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.09 s	F#	2023-05-06 18:10:13

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2021-10-30 12:09:55
2	Chris Vilches	0.37 s	Go	2024-09-21 15:18:46

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.01 s	Haskell	2024-11-06 16:17:40
2	Joshua Coward	0.10 s	Haskell	2022-02-03 16:47:43
3	Brent Yorgey	0.26 s	Haskell	2018-04-14 15:05:37

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.08 s	Java	2022-02-27 18:29:23
2	Tan Xing Zhong	0.10 s	Java	2024-10-11 07:24:24
3	Ben Cobb	0.11 s	Java	2023-10-01 21:20:37
4	Ander Sinijärv	0.11 s	Java	2026-03-07 10:23:53
5	Mattias Gustafsson	0.12 s	Java	2018-01-20 12:59:18
6	James Black	0.12 s	Java	2018-07-25 15:38:44
7	Ranjith M	0.12 s	Java	2023-10-28 02:04:10
8	Logan Pipes	0.13 s	Java	2022-03-08 05:00:19
9	Santiago Rivas	0.13 s	Java	2024-12-28 13:03:34
10	Markus Larsson	0.14 s	Java	2018-01-20 12:43:55

#	User	Runtime	Language	Date
1	Peter Kedemo	0.43 s	JavaScript (Node.js)	2019-12-29 12:05:38
2	Daniel Angulo	0.45 s	JavaScript (Node.js)	2021-02-16 20:12:24

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.05 s	JavaScript (SpiderMonkey)	2023-06-03 20:01:25
2	Zach Tschetter	0.06 s	JavaScript (SpiderMonkey)	2023-06-15 14:52:22
3	Bjørn Chr. Soltvedt	0.20 s	JavaScript (SpiderMonkey)	2018-02-02 01:11:40

#	User	Runtime	Language	Date
1	Timothy Gaede	0.60 s	Julia	2024-05-08 15:12:24

#	User	Runtime	Language	Date
1	Hidden user	0.34 s	Kotlin	2020-04-05 06:37:28
2	Phường Lên	0.38 s	Kotlin	2019-11-20 03:37:06

#	User	Runtime	Language	Date
1	Junyu Zhan	0.01 s	Odin	2026-02-03 02:05:35

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Python 2	2018-01-20 12:08:18
2	Hidden user	0.03 s	Python 2	2018-01-20 12:26:32
3	Ciara Godwin	0.03 s	Python 2	2018-04-01 15:14:37
4	Sigurður Jens Albertsson	0.04 s	Python 2	2018-02-20 14:14:13
5	Miorel Palii	0.04 s	Python 2	2018-02-27 03:12:47
6	Alfredo Beaumont	0.04 s	Python 2	2018-02-28 11:28:28
7	Hermon Mulat	0.04 s	Python 2	2018-11-21 18:04:02
8	Hidden user	0.04 s	Python 2	2018-12-03 20:06:51
9	Lars Åström	0.04 s	Python 2	2019-03-28 13:55:05
10	Andreas Björklund	0.04 s	Python 2	2019-05-27 04:05:35

#	User	Runtime	Language	Date
1	Wayne	0.02 s	Python 3	2018-01-30 18:30:07
2	Jeremy Fernandez	0.02 s	Python 3	2019-11-16 22:23:10
3	Marcus Dicander	0.03 s	Python 3	2018-01-20 12:35:38
4	Ivar Källström	0.03 s	Python 3	2018-01-20 12:39:39
5	Aaron Dunigan AtLee	0.03 s	Python 3	2018-02-08 06:31:25
6	Cheng Hang	0.03 s	Python 3	2018-02-23 11:51:44
7	Emma Ziegellaub Eichler	0.03 s	Python 3	2018-02-27 03:09:44
8	Ram Basnet	0.03 s	Python 3	2018-03-17 05:45:49
9	Peter Beattie	0.03 s	Python 3	2018-05-20 20:44:54
10	Vincent Tandya	0.03 s	Python 3	2018-06-25 03:35:30

#	User	Runtime	Language	Date
1	Miorel Palii	0.08 s	Ruby	2018-01-21 22:18:40

#	User	Runtime	Language	Date
1	Pahlevi Fikri Auliya	0.00 s	Rust	2020-11-07 11:50:29
2	Vincent Lagerros	0.00 s	Rust	2024-08-23 17:27:56
3	Erik Magnusson	0.00 s	Rust	2024-12-10 17:34:11
4	Ming Kang	0.00 s	Rust	2025-06-06 08:06:31
5	Bas Dirks	0.01 s	Rust	2022-01-24 11:11:00
6	Aaron Lengyel	0.01 s	Rust	2023-01-14 21:59:56
7	David Rasch	0.01 s	Rust	2023-09-21 13:59:55
8	Silver Slinko	0.01 s	Rust	2026-03-04 11:37:55

#	User	Length	Language	Date
1	Mirel Cosulschi	1810	C	2025-03-29 14:30:02
2	Sambit Palit	3721	C	2020-11-13 20:30:46

#	User	Length	Language	Date
1	Klas af Geijerstam	1795	C#	2018-02-03 15:11:28
2	Jakub Jarząbek	1867	C#	2020-10-16 20:49:02
3	Henrik Hallbert	1915	C#	2019-11-02 18:58:29
4	Marek	2221	C#	2020-10-14 09:04:14
5	Ong Cheng Geng	2468	C#	2020-08-08 11:02:50
6	Yuwono Bangun Nagoro	2530	C#	2022-08-18 15:02:00
7	Jan Matthiessen	4558	C#	2020-08-25 17:39:01
8	Askar Rakhimzhanov	6610	C#	2020-10-18 00:42:32
9	Andrzej Krajniak	20448	C#	2020-10-14 06:04:37

#	User	Length	Language	Date
1	Jesús Pacheco Alonso	596	C++	2025-03-06 12:34:38
2	Jason Cannon	600	C++	2020-01-07 19:30:44
3	Alexander Skidanov	625	C++	2025-01-17 18:58:04
4	Evelyn Chen	662	C++	2019-05-02 10:37:31
5	Tan Yi Long	671	C++	2023-12-29 06:53:02
6	Daryll Ko	692	C++	2021-12-23 07:58:19
7	Hyunjun Lee	714	C++	2022-11-12 06:59:15
8	Ang Yi Xian Symeon	718	C++	2019-03-25 20:19:07
9	Han Moe Htet	724	C++	2020-07-14 01:25:47
10	Ang Kiang Yang	726	C++	2019-03-25 13:01:07

#	User	Length	Language	Date
1	Hidden user	1002	Common Lisp	2019-07-17 04:44:26

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1767	F#	2023-05-06 18:10:13

#	User	Length	Language	Date
1	Chris Vilches	824	Go	2024-08-16 17:45:52
2	Norbert Voelker	1475	Go	2021-10-30 12:09:55

#	User	Length	Language	Date
1	Joshua Coward	1118	Haskell	2022-02-03 16:47:43
2	Steinar Simonnes	1235	Haskell	2024-11-06 16:17:40
3	Brent Yorgey	2054	Haskell	2018-04-14 15:05:37

#	User	Length	Language	Date
1	Doug Goodman	948	Java	2018-04-05 18:49:02
2	Daniel Joyce	1207	Java	2018-03-16 03:21:55
3	Eric Leow Yu Quan	1210	Java	2021-01-17 05:24:47
4	Evan Losier	1327	Java	2019-11-20 23:47:32
5	Logan Pipes	1405	Java	2022-03-08 05:00:19
6	Anton Budovey	1458	Java	2026-03-09 16:57:21
7	Artjom Amosov	1462	Java	2026-03-05 19:51:21
8	Markus Bao	1484	Java	2024-06-28 00:15:38
9	Emilie Hyslop	1543	Java	2022-04-01 06:01:06
10	Nguyen Phuoc Bao Hoang	1564	Java	2021-08-04 14:49:40

#	User	Length	Language	Date
1	Peter Kedemo	1053	JavaScript (Node.js)	2019-12-29 12:05:38
2	Daniel Angulo	2517	JavaScript (Node.js)	2021-02-16 20:13:04

#	User	Length	Language	Date
1	Zach Tschetter	706	JavaScript (SpiderMonkey)	2023-06-15 14:52:22
2	Bjørn Chr. Soltvedt	792	JavaScript (SpiderMonkey)	2018-02-02 01:11:40
3	Christian Pilegaard Cederquist	819	JavaScript (SpiderMonkey)	2023-06-03 20:01:25

#	User	Length	Language	Date
1	Timothy Gaede	859	Julia	2024-05-08 15:12:24

#	User	Length	Language	Date
1	Phường Lên	899	Kotlin	2019-11-20 03:37:06
2	Hidden user	2067	Kotlin	2020-04-05 06:37:28

#	User	Length	Language	Date
1	Junyu Zhan	2120	Odin	2026-02-03 02:05:35

#	User	Length	Language	Date
1	Thomas Feld	316	Python 2	2019-08-16 13:22:36
2	Johan Lyts	424	Python 2	2020-02-09 12:52:07
3	Alfredo Beaumont	451	Python 2	2018-02-28 11:28:28
4	Oskar Haarklou Veileborg	467	Python 2	2019-11-05 15:21:14
5	Jesper Öqvist	489	Python 2	2019-08-14 23:04:41
6	Andreas Björklund	533	Python 2	2019-05-27 04:05:35
7	Yanmarshus Bachtiar	543	Python 2	2020-09-15 02:43:18
8	Ciara Godwin	588	Python 2	2018-04-01 15:14:37
9	Lars Åström	588	Python 2	2019-03-28 13:55:05
10	Sigurður Jens Albertsson	670	Python 2	2018-02-20 14:14:13

#	User	Length	Language	Date
1	David Aldenbro	250	Python 3	2025-10-20 20:12:04
2	Artur Khuziakhmetov	299	Python 3	2025-03-02 10:28:14
3	Ahmed Chamseddine	339	Python 3	2025-05-12 14:07:59
4	Kyle Wells	357	Python 3	2024-10-04 13:31:53
5	Kai Hoop	381	Python 3	2018-02-27 21:20:00
6	Nicholas Russell Saerang	383	Python 3	2023-06-24 12:05:35
7	Liam Scalzulli	421	Python 3	2021-06-06 19:11:31
8	Alexander Viklund	423	Python 3	2020-02-13 23:05:29
9	Elias Amha	425	Python 3	2019-11-28 11:49:05
10	Hidden user	432	Python 3	2023-01-29 11:03:40

#	User	Length	Language	Date
1	Miorel Palii	499	Ruby	2018-01-21 22:18:40

#	User	Length	Language	Date
1	David Rasch	1154	Rust	2023-09-21 13:59:55
2	Bas Dirks	1965	Rust	2022-01-24 11:11:00
3	Ming Kang	2407	Rust	2025-06-06 08:06:31
4	Pahlevi Fikri Auliya	2773	Rust	2020-11-07 11:50:29
5	Silver Slinko	2868	Rust	2026-03-04 11:37:55
6	Erik Magnusson	4817	Rust	2024-12-10 17:34:11
7	Aaron Lengyel	5638	Rust	2023-01-14 21:59:56
8	Vincent Lagerros	18583	Rust	2024-08-23 17:27:56

Solution running time distribution