Problem A
#include<scoring> — Problem Statistics

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Submissions	5753
Accepted submissions	946
Submission ratio	16.44%
Authors	945
Full solves [?]	650
Full solve Ratio	68.78%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2017-11-20 15:58:33
2	Clement Cheng Le Da	0.00 s	C	2019-01-24 10:13:50
3	Someone	0.00 s	C	2019-02-02 12:46:23
4	Alexander Bilde Pedersen	0.00 s	C	2023-09-21 18:59:54
5	Oscar Brink	0.00 s	C	2023-10-16 06:34:06
6	Hidden user	0.00 s	C	2024-03-08 13:54:36
7	Eyleifur Bjarkason	0.00 s	C	2024-09-06 01:16:13
8	Nelson Ferdinand	0.00 s	C	2024-09-22 13:23:29
9	Hidden user	0.00 s	C	2024-10-24 22:08:56
10	Hidden user	0.00 s	C	2025-04-26 19:11:12

#	User	Runtime	Language	Date
1	Roxanne Baker	0.02 s	C#	2017-12-12 21:31:19
2	Eric The Swift	0.02 s	C#	2019-03-30 03:56:02
3	Bartosz Starczewski	0.03 s	C#	2017-12-29 21:15:57
4	Bartosz Starczewski	0.03 s	C#	2017-12-29 21:17:00
5	Mohsen Dehbashi	0.05 s	C#	2025-09-09 15:39:26

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Common Lisp	2019-06-26 06:45:31

#	User	Runtime	Language	Date
1	Javier Gómez Díaz	0.00 s	Crystal	2025-07-22 22:31:33

#	User	Runtime	Language	Date
1	Brent Yorgey	0.01 s	Haskell	2017-11-24 01:53:51
2	Hidden user	0.01 s	Haskell	2025-09-25 19:59:45
3	Olle Eriksson	0.02 s	Haskell	2019-08-14 23:28:08
4	Brandon Tang	0.03 s	Haskell	2023-06-10 13:02:14
5	Braxton Rolle	0.03 s	Haskell	2024-03-08 05:37:38
6	Santiago Rivas	0.03 s	Haskell	2024-09-01 13:58:49

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Java	2025-09-14 01:11:31
2	Joachim Borup	0.07 s	Java	2021-12-04 18:45:13
3	Nick Wu	0.08 s	Java	2018-08-17 01:21:42
4	Mattias Gustafsson	0.09 s	Java	2017-11-18 12:27:39
5	Markus Olsson	0.09 s	Java	2017-11-18 12:53:55
6	Markus Larsson	0.09 s	Java	2017-11-18 13:02:07
7	Tobias Glimmerfors	0.09 s	Java	2018-11-17 09:57:18
8	Andrew Polizzotto	0.09 s	Java	2020-10-01 07:48:56
9	Rene Argento	0.09 s	Java	2021-02-27 18:21:09
10	Sebastian Hjelm	0.10 s	Java	2017-11-18 11:57:29

#	User	Runtime	Language	Date
1	Caleb Early	0.06 s	JavaScript (Node.js)	2024-02-23 23:13:12
2	William Jackson	0.07 s	JavaScript (Node.js)	2019-02-21 22:12:30
3	Lunar Lovegood	0.09 s	JavaScript (Node.js)	2019-01-23 13:20:32
4	Oliver Bredenberg	0.42 s	JavaScript (Node.js)	2019-09-02 13:00:54

#	User	Runtime	Language	Date
1	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2025-02-08 19:47:58
2	Bjørn Chr. Soltvedt	0.04 s	JavaScript (SpiderMonkey)	2019-02-03 10:35:48
3	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-08-15 07:45:00

#	User	Runtime	Language	Date
1	Vahagn Altunyan	0.80 s	Julia	2024-06-16 22:03:48

#	User	Runtime	Language	Date
1	Przemysław Curzytek	0.23 s	Kotlin	2017-12-14 18:30:41
2	Jacob Huebner	0.26 s	Kotlin	2024-09-04 09:02:36
3	Benjamin Ye	0.27 s	Kotlin	2024-01-16 18:56:36
4	Hidden user	0.31 s	Kotlin	2024-09-16 10:08:09

#	User	Runtime	Language	Date
1	Adriel Javen Castro	0.01 s	Lua	2025-02-07 21:32:37

#	User	Runtime	Language	Date
1	Jesper Öqvist	0.05 s	Python 2	2019-02-27 23:11:17
2	Andreas Björklund	0.05 s	Python 2	2019-03-16 11:51:48
3	Nisarg Raval	0.05 s	Python 2	2020-06-22 13:14:13
4	Yanmarshus Bachtiar	0.05 s	Python 2	2020-10-05 01:59:46
5	Mridula Prabhu	0.07 s	Python 2	2020-06-22 15:16:56

#	User	Runtime	Language	Date
1	Erik Bjäreholt	0.02 s	Python 3	2017-11-18 12:13:08
2	Lars Åström	0.02 s	Python 3	2017-11-18 13:00:09
3	Sam Zackrisson	0.02 s	Python 3	2017-11-18 14:05:47
4	Ram Basnet	0.02 s	Python 3	2017-12-20 08:25:14
5	Donald Heppner	0.02 s	Python 3	2017-12-22 21:34:51
6	Herman Appelgren	0.02 s	Python 3	2017-12-26 17:04:58
7	Tran Tuong Minh Nguyen	0.02 s	Python 3	2018-01-25 21:15:55
8	Christofer Ohlsson	0.02 s	Python 3	2018-01-27 12:25:11
9	Måns Magnusson	0.02 s	Python 3	2018-03-20 14:32:45
10	Andrés Flores	0.02 s	Python 3	2018-04-06 23:58:45

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-09-19 13:57:24

#	User	Runtime	Language	Date
1	Lily Gloudemans	0.00 s	Rust	2023-09-30 06:51:19
2	Petr Sabel	0.00 s	Rust	2023-10-17 12:56:34
3	Daniel Anker Hermansen	0.00 s	Rust	2024-03-28 23:09:09
4	Vincent Lagerros	0.00 s	Rust	2024-04-09 03:40:37
5	Alexander Berntsson	0.00 s	Rust	2024-06-10 13:17:08
6	David Ir	0.00 s	Rust	2025-01-23 12:45:24
7	Stanislav Terliakov	0.00 s	Rust	2025-03-10 14:24:21
8	Artur Khuziakhmetov	0.00 s	Rust	2025-03-20 13:21:16
9	Erik Magnusson	0.07 s	Rust	2024-02-16 09:33:46

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Swift	2023-11-07 12:03:49

#	User	Length	Language	Date
1	Martin Blom	1215	C	2023-11-21 09:53:30
2	Hidden user	1351	C	2024-03-08 13:54:36
3	Hidden user	1387	C	2017-11-20 15:58:33
4	Hidden user	1480	C	2025-04-26 19:11:12
5	Alexander Bilde Pedersen	1760	C	2023-09-21 18:59:54
6	Hidden user	2032	C	2024-10-24 22:08:56
7	Someone	2690	C	2019-02-02 13:02:35
8	Eyleifur Bjarkason	2823	C	2024-09-06 01:16:13
9	Nelson Ferdinand	2870	C	2024-09-22 13:23:29
10	Oscar Brink	3094	C	2023-10-16 06:34:06

#	User	Length	Language	Date
1	Mohsen Dehbashi	2489	C#	2025-09-09 15:48:43
2	Roxanne Baker	3480	C#	2017-12-12 21:31:19
3	Eric The Swift	3962	C#	2019-03-30 03:56:02
4	Bartosz Starczewski	3983	C#	2017-12-29 21:15:57
5	Bartosz Starczewski	3983	C#	2017-12-29 21:17:00

#	User	Length	Language	Date
1	Yeoh Han Yi	680	C++	2025-04-15 15:49:07
2	Evan Michael Bailey	746	C++	2023-10-25 01:42:52
3	Hyunjun Lee	856	C++	2022-10-27 17:56:51
4	Rafael Kristoforus Yanto	876	C++	2025-05-09 08:51:49
5	Giovanni Gaio	953	C++	2023-10-21 22:02:20
6	Atli Fannar Franklín	979	C++	2020-03-04 14:16:13
7	Jonathan Paulson	995	C++	2025-05-23 18:51:33
8	Ben Wu	1024	C++	2019-01-23 07:05:41
9	Jeremy Lim	1055	C++	2024-01-07 16:40:40
10	ETHAN EWER	1058	C++	2023-09-20 02:04:02

#	User	Length	Language	Date
1	Hidden user	2217	Common Lisp	2019-06-26 06:47:06

#	User	Length	Language	Date
1	Javier Gómez Díaz	1206	Crystal	2025-07-22 22:31:33

#	User	Length	Language	Date
1	Brandon Tang	1206	Haskell	2023-06-10 13:02:14
2	Braxton Rolle	1394	Haskell	2024-03-08 05:37:38
3	Santiago Rivas	1569	Haskell	2024-09-01 13:58:49
4	Brent Yorgey	2414	Haskell	2017-11-24 01:53:51
5	Olle Eriksson	2641	Haskell	2019-08-14 23:28:08
6	Hidden user	2647	Haskell	2025-09-25 19:59:45

#	User	Length	Language	Date
1	Doug Goodman	1546	Java	2018-01-03 21:28:55
2	Josh Wozniak	1589	Java	2018-02-08 04:00:15
3	Jeremy Lim	1613	Java	2024-01-07 15:01:42
4	Andrew Polizzotto	1926	Java	2020-10-01 07:47:43
5	Anthony Pagnotta	1935	Java	2024-11-08 05:06:35
6	Ian Mahendra Setiawan	1949	Java	2025-04-24 15:39:01
7	Aaron Michael	1972	Java	2024-01-06 03:39:01
8	Lars Corbijn	2122	Java	2023-10-04 15:54:39
9	Godmar Back	2322	Java	2020-09-28 19:26:57
10	Eimhin McDonald	2365	Java	2019-02-01 23:13:30

#	User	Length	Language	Date
1	William Jackson	2215	JavaScript (Node.js)	2019-02-21 22:12:30
2	Oliver Bredenberg	2940	JavaScript (Node.js)	2019-09-02 13:00:54
3	Caleb Early	3861	JavaScript (Node.js)	2024-02-23 23:13:12
4	Lunar Lovegood	24755	JavaScript (Node.js)	2019-01-23 13:20:32

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	972	JavaScript (SpiderMonkey)	2023-08-15 07:45:00
2	Bjørn Chr. Soltvedt	1025	JavaScript (SpiderMonkey)	2019-02-03 10:35:48
3	Zach Tschetter	1128	JavaScript (SpiderMonkey)	2025-02-08 19:47:58

#	User	Length	Language	Date
1	Vahagn Altunyan	1133	Julia	2024-06-16 22:03:48

#	User	Length	Language	Date
1	Benjamin Ye	1501	Kotlin	2024-01-16 18:56:36
2	Jacob Huebner	1606	Kotlin	2024-09-04 09:02:36
3	Hidden user	1611	Kotlin	2024-09-16 10:08:09
4	Przemysław Curzytek	4341	Kotlin	2017-12-14 18:30:41

#	User	Length	Language	Date
1	Adriel Javen Castro	2679	Lua	2025-02-07 21:32:37

#	User	Length	Language	Date
1	Andreas Björklund	468	Python 2	2019-03-16 11:51:48
2	Jesper Öqvist	786	Python 2	2019-02-27 23:11:17
3	Yanmarshus Bachtiar	1258	Python 2	2020-10-05 01:59:46
4	Nisarg Raval	3186	Python 2	2020-06-22 13:14:13
5	Mridula Prabhu	3489	Python 2	2020-06-22 15:16:56

#	User	Length	Language	Date
1	June Hoop	294	Python 3	2024-09-28 04:50:01
2	Yong Mao	330	Python 3	2023-10-17 01:34:33
3	Ahmed Chamseddine	348	Python 3	2025-07-15 18:39:44
4	Nino Bašić	379	Python 3	2024-11-05 14:16:36
5	Adam Polak	401	Python 3	2025-02-07 14:49:15
6	Timothy White	506	Python 3	2023-03-11 17:44:20
7	Lars Åström	508	Python 3	2017-11-18 13:00:09
8	Tran Tuong Minh Nguyen	537	Python 3	2018-01-25 21:15:55
9	Teikn Smith	559	Python 3	2023-09-21 03:27:28
10	Dilhan Salgado	571	Python 3	2025-10-14 18:28:58

#	User	Length	Language	Date
1	Thomas Feld	206	Ruby	2023-09-19 14:03:51

#	User	Length	Language	Date
1	Artur Khuziakhmetov	1077	Rust	2025-03-20 13:34:40
2	Vincent Lagerros	1710	Rust	2024-04-09 03:40:37
3	Alexander Berntsson	1855	Rust	2024-06-10 13:17:08
4	Petr Sabel	1942	Rust	2023-10-17 12:56:34
5	Lily Gloudemans	2176	Rust	2023-09-30 06:51:19
6	David Ir	2861	Rust	2025-01-23 12:45:24
7	Stanislav Terliakov	3486	Rust	2025-03-10 14:24:21
8	Erik Magnusson	6175	Rust	2024-02-16 09:33:46
9	Daniel Anker Hermansen	27590	Rust	2024-03-28 23:09:09

#	User	Length	Language	Date
1	Hidden user	1495	Swift	2023-11-07 12:03:49

Solution running time distribution