Problem A
Running Steps — Problem Statistics

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Submissions	824
Accepted submissions	392
Submission ratio	47.57%
Authors	347
Accepted authors	316
Author ratio	91.07%

#	User	Runtime	Language	Date
1	Kelsey Heidarian	0.02 s	C#	2017-06-13 22:20:41
2	Petra Marc	0.04 s	C#	2016-12-12 13:37:23

#	User	Runtime	Language	Date
1	Norbert Voelker	0.09 s	Go	2021-08-23 21:06:33

#	User	Runtime	Language	Date
1	Brent Yorgey	0.01 s	Haskell	2018-01-02 06:11:20
2	Hidden user	0.01 s	Haskell	2019-11-06 19:32:15
3	Hidden user	0.01 s	Haskell	2023-01-20 23:07:27
4	Steinar Simonnes	0.03 s	Haskell	2025-06-26 15:58:49

#	User	Runtime	Language	Date
1	Stephen Tschudi	0.07 s	Java	2016-10-16 20:31:21
2	Martijn Muijsers	0.07 s	Java	2016-10-18 20:09:00
3	Liam Keliher	0.07 s	Java	2017-04-22 11:07:57
4	Kristoffer Åhgren	0.07 s	Java	2017-06-22 18:08:04
5	Josenildo Silva	0.07 s	Java	2017-07-08 17:23:35
6	Steven Cheng	0.07 s	Java	2018-05-23 19:06:48
7	Bjørn Dons	0.07 s	Java	2018-11-20 03:18:39
8	Micah Stairs	0.09 s	Java	2016-12-18 04:57:57
9	Crystal Sharpe	0.09 s	Java	2020-07-12 05:47:40
10	Hidden user	0.09 s	Java	2025-03-11 14:43:19

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.21 s	JavaScript (SpiderMonkey)	2023-01-11 21:02:25
2	Christian Cederquist	0.22 s	JavaScript (SpiderMonkey)	2023-05-24 10:06:29

#	User	Runtime	Language	Date
1	Timothy Gaede	0.57 s	Julia	2024-09-28 07:28:49

#	User	Runtime	Language	Date
1	Adam Rankin	0.24 s	Kotlin	2023-08-31 01:26:10
2	Hidden user	0.25 s	Kotlin	2017-12-01 21:02:22
3	Phường Lên	0.36 s	Kotlin	2019-10-22 20:00:21
4	Jacob Huebner	0.44 s	Kotlin	2020-02-28 19:48:02
5	Kelly Dance	0.44 s	Kotlin	2022-08-26 17:47:13

#	User	Runtime	Language	Date
1	Sigurður Jens Albertsson	0.04 s	Python 2	2017-11-21 01:24:49
2	Wang Zhi Jian	0.05 s	Python 2	2019-05-11 06:29:06
3	Haochen Chen	0.06 s	Python 2	2016-10-16 19:54:18
4	Johan Lyts	0.06 s	Python 2	2019-09-11 21:45:12
5	Martin Wan	0.07 s	Python 2	2017-06-30 03:01:14
6	Dmitry Lyubshin	0.07 s	Python 2	2018-05-29 12:23:48
7	Maj Stenmark	0.07 s	Python 2	2019-09-08 20:31:00
8	Thomas Feld	0.07 s	Python 2	2019-09-12 14:09:18
9	Tomas Hallenberg	0.08 s	Python 2	2017-07-07 14:34:51
10	Fan Zhang	0.08 s	Python 2	2017-10-28 03:44:05

#	User	Runtime	Language	Date
1	Junlin Wang	0.02 s	Python 3	2016-10-25 05:33:09
2	Tan Chee Heng	0.02 s	Python 3	2017-11-23 16:26:44
3	Aaron Dunigan AtLee	0.02 s	Python 3	2017-12-23 03:45:06
4	Ram Basnet	0.02 s	Python 3	2018-03-07 07:52:47
5	William Gan	0.02 s	Python 3	2018-04-14 10:42:24
6	Auburn Ford	0.02 s	Python 3	2019-07-21 00:45:12
7	Pedro Matias	0.03 s	Python 3	2016-10-21 08:30:36
8	Kevin Wang	0.03 s	Python 3	2016-10-21 13:46:33
9	Aditya Koppula	0.03 s	Python 3	2016-10-25 06:46:00
10	Ofri Harlev	0.03 s	Python 3	2016-10-25 08:19:50

#	User	Runtime	Language	Date
1	Thomas Feld	0.07 s	Ruby	2023-05-22 13:18:30

#	User	Length	Language	Date
1	14 Hariharan Thiagarajan K	1006	C	2022-05-16 15:25:12
2	Arpit Mathur	1006	C	2022-06-22 06:58:12
3	Marian D.	1006	C	2023-11-24 09:02:27
4	Nimit Agrawal	1008	C	2019-01-09 18:41:54
5	Louth Bin Rawshan	1008	C	2019-08-20 10:44:04
6	Sambit Palit	1164	C	2020-10-10 02:18:42
7	Quân Anh	1816	C	2024-04-03 20:21:23
8	Jón Steinn Elíasson	1845	C	2017-07-03 19:38:26
9	Ivan Petrov	1972	C	2019-07-29 16:01:31
10	Денис Соболев	2006	C	2019-04-24 13:19:18

#	User	Length	Language	Date
1	Petra Marc	1890	C#	2016-12-12 13:37:23
2	Kelsey Heidarian	4739	C#	2017-06-13 22:20:41

#	User	Length	Language	Date
1	Hidden user	443	C++	2020-03-07 20:18:09
2	Grae Yeandle	468	C++	2016-12-12 16:37:03
3	Jiang Yue	510	C++	2018-02-06 11:02:20
4	人外沙耶	523	C++	2021-03-24 20:06:01
5	Justin Yang	541	C++	2016-10-16 20:50:18
6	Jason Cannon	549	C++	2019-12-13 17:05:26
7	Dolphin Auditore	581	C++	2018-09-23 22:47:41
8	Syx Pek	586	C++	2017-03-09 03:21:41
9	Chenghan Zhou	613	C++	2018-10-18 03:48:19
10	Keefe Johnson	618	C++	2016-11-28 13:19:01

#	User	Length	Language	Date
1	Norbert Voelker	902	Go	2021-08-23 21:06:33

#	User	Length	Language	Date
1	Hidden user	985	Haskell	2023-01-20 23:07:27
2	Steinar Simonnes	1694	Haskell	2025-06-26 16:09:46
3	Brent Yorgey	1982	Haskell	2018-01-02 06:11:20
4	Hidden user	10653	Haskell	2019-11-06 19:32:15

#	User	Length	Language	Date
1	Matthew Das Sarma	498	Java	2016-10-16 22:40:37
2	Åke Wettergren	611	Java	2018-01-17 15:40:58
3	Malte Larsson	611	Java	2018-01-17 15:42:07
4	Doug Goodman	808	Java	2017-06-15 23:08:56
5	Hidden user	844	Java	2017-07-21 03:43:40
6	Martin Wan	893	Java	2017-06-30 18:18:55
7	Michael LeKander	903	Java	2016-10-16 19:23:27
8	Matthew Stewart	972	Java	2016-10-19 01:34:27
9	Josenildo Silva	983	Java	2017-07-08 17:23:35
10	Kai Qu	995	Java	2018-10-18 23:58:47

#	User	Length	Language	Date
1	Christian Cederquist	1293	JavaScript (SpiderMonkey)	2023-05-24 09:40:35
2	Bjørn Chr. Soltvedt	24910	JavaScript (SpiderMonkey)	2023-01-11 21:02:25

#	User	Length	Language	Date
1	Timothy Gaede	1109	Julia	2024-09-28 07:28:49

#	User	Length	Language	Date
1	Hidden user	621	Kotlin	2017-12-01 21:02:22
2	Phường Lên	782	Kotlin	2019-10-22 20:00:21
3	Adam Rankin	784	Kotlin	2023-08-31 01:26:10
4	Kelly Dance	838	Kotlin	2022-08-26 17:47:13
5	Jacob Huebner	3163	Kotlin	2020-02-28 19:48:02

#	User	Length	Language	Date
1	Dmitry Lyubshin	346	Python 2	2018-05-29 12:23:48
2	Sean Purcell	364	Python 2	2016-10-16 19:23:57
3	Thomas Feld	395	Python 2	2019-09-12 14:09:18
4	Fan Zhang	428	Python 2	2017-10-28 03:44:05
5	Sigurður Jens Albertsson	439	Python 2	2017-11-21 01:24:49
6	Johan Lyts	455	Python 2	2019-09-11 21:45:12
7	Jesper Öqvist	484	Python 2	2018-10-30 23:28:02
8	Martin Wan	531	Python 2	2017-06-30 03:01:14
9	Haochen Chen	617	Python 2	2016-10-16 19:54:18
10	Maj Stenmark	625	Python 2	2019-09-08 20:31:00

#	User	Length	Language	Date
1	Thomas Feld	150	Python 3	2023-05-22 13:07:50
2	Christian Blumenthal	166	Python 3	2023-06-28 12:24:58
3	vance	186	Python 3	2022-09-13 08:18:24
4	Ahmed Chamseddine	198	Python 3	2025-05-04 20:09:19
5	Hidden user	223	Python 3	2023-05-24 03:34:32
6	Johan Wind	257	Python 3	2018-09-16 03:32:41
7	Hidden user	282	Python 3	2020-08-24 11:16:52
8	William Gan	306	Python 3	2018-04-14 10:42:24
9	Nikita Morozov	312	Python 3	2021-11-04 23:30:52
10	Nino Bašić	345	Python 3	2023-01-07 15:29:54

#	User	Length	Language	Date
1	Thomas Feld	95	Ruby	2023-05-22 13:24:35

Solution running time distribution