Problem A
A Vicious Pikeman (Easy) — Problem Statistics

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Submissions	6123
Accepted submissions	2029
Submission ratio	33.14%
Authors	1723
Accepted authors	1498
Author ratio	86.94%

#	User	Runtime	Language	Date
1	Erik Nyström	0.03 s	C#	2017-09-03 18:59:36
2	Hidden user	0.05 s	C#	2024-09-05 15:57:41
3	Wenlei Yu	0.05 s	C#	2025-01-18 04:09:12
4	Jean-Paul Hanna	0.05 s	C#	2025-05-07 08:52:15
5	Matias Córdova	0.05 s	C#	2025-06-21 18:18:59
6	Said Montaño	0.05 s	C#	2025-06-26 18:35:55
7	Diego Dell	0.06 s	C#	2025-06-21 01:14:49
8	Mika 606	0.06 s	C#	2025-06-21 03:25:28
9	German A.	0.06 s	C#	2025-06-26 16:23:08
10	Steven Heinen	0.07 s	C#	2023-08-09 16:17:17

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Common Lisp	2019-06-27 07:25:34

#	User	Runtime	Language	Date
1	MARIA JOSE MORALES AVALOS	0.00 s	Go	2025-04-26 04:07:56
2	Ricardo Alonzo	0.02 s	Go	2020-02-21 10:43:20
3	Norbert Voelker	0.02 s	Go	2021-09-09 00:47:26
4	Neal McCarthy	0.20 s	Go	2018-10-28 02:23:31

#	User	Runtime	Language	Date
1	Brent Yorgey	0.01 s	Haskell	2017-10-22 15:36:22
2	Fulano de Tal	0.01 s	Haskell	2022-02-03 17:40:32
3	Hidden user	0.01 s	Haskell	2022-05-02 12:44:32
4	Steinar Simonnes	0.01 s	Haskell	2024-10-27 19:45:41

#	User	Runtime	Language	Date
1	Hussin Suleiman	0.04 s	Java	2024-10-05 17:55:52
2	Lakshya Kharayat	0.04 s	Java	2025-06-14 09:46:15
3	Simon Klein	0.06 s	Java	2012-03-21 18:07:41
4	Henrik Sandström	0.06 s	Java	2015-02-15 21:42:50
5	Kurtis Van Gent	0.06 s	Java	2016-06-09 18:30:14
6	Hidden user	0.06 s	Java	2016-10-11 20:20:30
7	Mitchell Peterson	0.06 s	Java	2016-10-11 20:21:50
8	Benjamin Laurence Erickson	0.06 s	Java	2016-10-12 01:06:21
9	Wouter van Veelen	0.06 s	Java	2016-11-10 20:55:28
10	Vanessa Diaz	0.06 s	Java	2017-01-26 02:57:34

#	User	Runtime	Language	Date
1	Gurpartap Singh Bhatti	0.08 s	JavaScript (Node.js)	2019-04-12 16:23:19
2	Ricardo	0.45 s	JavaScript (Node.js)	2020-10-22 04:11:04

#	User	Runtime	Language	Date
1	Jakub Krakowiak	0.02 s	JavaScript (SpiderMonkey)	2017-01-26 08:51:48
2	Christian Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-05-22 07:10:47
3	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2023-06-23 23:59:26
4	Zeyad Osama	0.03 s	JavaScript (SpiderMonkey)	2024-01-22 05:25:35

#	User	Runtime	Language	Date
1	Hidden user	0.13 s	Kotlin	2020-05-08 23:51:05
2	Troy Warmboe	0.22 s	Kotlin	2018-10-20 01:42:33
3	Adam Rankin	0.22 s	Kotlin	2023-09-28 02:05:18
4	Hidden user	0.23 s	Kotlin	2024-11-24 20:28:49

#	User	Runtime	Language	Date
1	Gustav Sennton	0.03 s	Python 2	2012-03-21 20:13:56
2	Klas Björkqvist	0.03 s	Python 2	2014-07-19 17:16:01
3	Ali Ibrahim	0.03 s	Python 2	2016-10-22 02:07:23
4	udprogrammingteam Team	0.03 s	Python 2	2016-11-30 01:04:04
5	Katherine Beine	0.03 s	Python 2	2016-11-30 01:24:04
6	Miguel Alfageme Sanchez	0.03 s	Python 2	2017-01-26 00:48:10
7	Elisabeth Sulmont	0.03 s	Python 2	2017-02-28 00:39:58
8	Andre Rodriguez	0.03 s	Python 2	2017-03-01 16:30:50
9	YiHong Luo	0.03 s	Python 2	2017-03-06 21:05:24
10	Collin Rapp	0.03 s	Python 2	2017-03-16 02:57:55

#	User	Runtime	Language	Date
1	Casper Hagenaars	0.02 s	Python 3	2015-10-25 21:36:59
2	Sigurjón Freyr Viktorsson	0.02 s	Python 3	2016-04-29 13:34:06
3	Rick May	0.02 s	Python 3	2017-01-16 23:03:26
4	Matthew Zhang	0.02 s	Python 3	2017-02-06 18:49:05
5	Ian Yu	0.02 s	Python 3	2017-02-06 19:01:47
6	Brian Lee	0.02 s	Python 3	2017-02-15 04:05:59
7	Michael Hoffmann	0.02 s	Python 3	2017-03-08 19:41:48
8	Daniel	0.02 s	Python 3	2017-03-28 05:58:42
9	Nick Bakkegaard	0.02 s	Python 3	2017-04-04 04:11:06
10	Stuart Mashaal	0.02 s	Python 3	2017-04-11 17:57:50

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-08-11 12:43:43
2	Frederik Petersen	0.07 s	Ruby	2025-02-07 13:17:45

#	User	Runtime	Language	Date
1	Chaoyi Yin	0.00 s	Rust	2019-05-13 17:59:58
2	Paulo Araújo	0.00 s	Rust	2020-03-24 11:56:13
3	Sarek Høverstad Skotåm	0.00 s	Rust	2021-07-23 18:36:59
4	Aaron Lengyel	0.00 s	Rust	2021-11-10 20:46:36
5	Adam Gausmann	0.00 s	Rust	2022-12-27 18:21:44
6	Artur Khuziakhmetov	0.00 s	Rust	2023-09-07 09:35:45
7	Erik Magnusson	0.00 s	Rust	2024-02-29 10:03:38
8	Vincent Lagerros	0.00 s	Rust	2025-05-28 16:37:15
9	Mckinley Xie	0.01 s	Rust	2025-04-22 19:44:31
10	Daniel Anker Hermansen	0.03 s	Rust	2023-03-24 16:05:25

#	User	Length	Language	Date
1	Thibault Raffaillac	520	C	2012-03-21 20:16:43
2	Jonas Kylling	572	C	2015-03-21 19:23:03
3	Raymond Yang	578	C	2019-06-03 14:08:54
4	Nicola CARAVAGGI	595	C	2022-02-19 11:32:06
5	Jonas Höglund	645	C	2014-01-06 13:10:48
6	andromeda378	663	C	2023-11-04 05:09:50
7	Ivan Petrov	709	C	2019-09-01 12:29:14
8	Drake Packard	723	C	2018-03-02 01:14:32
9	Arya Vedantha	856	C	2024-12-08 14:19:25
10	Lara Ozdamar	920	C	2022-10-03 23:13:36

#	User	Length	Language	Date
1	German A.	1062	C#	2025-06-26 16:23:08
2	Wenlei Yu	1098	C#	2025-01-18 04:09:12
3	Said Montaño	1194	C#	2025-06-26 18:35:55
4	Diego Dell	1244	C#	2025-06-21 01:14:49
5	Mika 606	1244	C#	2025-06-21 03:25:28
6	Steven Heinen	1291	C#	2023-08-09 16:17:17
7	Matias Córdova	1922	C#	2025-06-21 18:18:59
8	Jean-Paul Hanna	1987	C#	2025-05-07 08:52:15
9	Hidden user	2251	C#	2024-09-05 15:57:41
10	Erik Nyström	3947	C#	2017-09-03 18:59:36

#	User	Length	Language	Date
1	Jeremy Eastham	316	C++	2025-04-24 03:23:09
2	a_b__c	321	C++	2021-03-03 07:24:59
3	Montgomery Bohde	322	C++	2024-04-23 21:05:34
4	Valeriu Motroi	391	C++	2016-05-01 18:23:14
5	Nickir Tay	408	C++	2017-08-31 11:42:42
6	Johan Wind	424	C++	2015-09-13 18:08:17
7	Johan Sannemo	426	C++	2012-03-21 22:46:37
8	Evan Michael Bailey	428	C++	2024-01-29 22:17:41
9	Reginald Frank	430	C++	2019-04-26 00:50:48
10	Chuck Fernández	431	C++	2016-10-07 23:37:26

#	User	Length	Language	Date
1	Hidden user	710	Common Lisp	2019-06-27 07:25:34

#	User	Length	Language	Date
1	Ricardo Alonzo	828	Go	2020-04-14 23:05:43
2	Norbert Voelker	874	Go	2021-09-09 00:47:26
3	Neal McCarthy	1421	Go	2018-10-28 02:23:31
4	MARIA JOSE MORALES AVALOS	1631	Go	2025-04-26 04:07:56

#	User	Length	Language	Date
1	Fulano de Tal	436	Haskell	2022-02-03 17:40:32
2	Brent Yorgey	870	Haskell	2017-10-22 15:36:22
3	Steinar Simonnes	900	Haskell	2024-11-17 22:16:04
4	Hidden user	1745	Haskell	2022-05-02 12:44:32

#	User	Length	Language	Date
1	Adam Abdalla	582	Java	2017-03-09 20:27:57
2	Doug Goodman	593	Java	2016-06-09 17:41:27
3	Alejandro Martínez Torres	667	Java	2016-10-07 22:28:51
4	Justin Zhang	719	Java	2021-10-22 21:33:44
5	Ethan Fan	750	Java	2021-07-02 00:03:39
6	Yassir Idhbi	758	Java	2017-08-20 14:02:04
7	Benjamin Laurence Erickson	762	Java	2016-06-11 01:10:10
8	Jerry Zhu	762	Java	2018-03-09 03:38:42
9	Rob Hochberg	763	Java	2025-03-04 23:56:29
10	Quan Chau	788	Java	2017-06-04 18:13:23

#	User	Length	Language	Date
1	Ricardo	857	JavaScript (Node.js)	2020-10-22 04:11:04
2	Gurpartap Singh Bhatti	1066	JavaScript (Node.js)	2019-04-12 05:28:38

#	User	Length	Language	Date
1	Zach Tschetter	365	JavaScript (SpiderMonkey)	2023-06-23 23:59:26
2	Christian Cederquist	598	JavaScript (SpiderMonkey)	2023-05-22 07:10:47
3	Jakub Krakowiak	789	JavaScript (SpiderMonkey)	2017-01-26 08:51:48
4	Zeyad Osama	872	JavaScript (SpiderMonkey)	2024-01-22 05:25:35

#	User	Length	Language	Date
1	Hidden user	476	Kotlin	2024-11-24 20:38:17
2	Adam Rankin	852	Kotlin	2023-09-28 02:05:18
3	Troy Warmboe	949	Kotlin	2018-10-20 01:42:33
4	Hidden user	1251	Kotlin	2020-05-08 23:51:05

#	User	Length	Language	Date
1	Lars Åström	332	Python 2	2019-10-25 23:28:30
2	Jesper Öqvist	360	Python 2	2018-07-14 15:16:51
3	Johan Lyts	374	Python 2	2020-08-20 14:03:14
4	Oskar Haarklou Veileborg	385	Python 2	2018-11-07 21:42:10
5	udprogrammingteam Team	395	Python 2	2016-11-30 01:04:04
6	Victor Zheng	402	Python 2	2018-12-14 20:01:03
7	Katherine Beine	411	Python 2	2016-11-30 01:24:04
8	Kasper Borys	436	Python 2	2017-11-13 01:58:03
9	Gustav Sennton	439	Python 2	2012-03-21 20:13:56
10	Steven Tran	457	Python 2	2018-04-21 19:58:18

#	User	Length	Language	Date
1	Jeremy Eastham	178	Python 3	2025-04-24 03:37:24
2	Suraj Mathashery	184	Python 3	2024-11-27 10:23:33
3	Peter Stauder	191	Python 3	2022-10-12 20:14:24
4	Ahmed Chamseddine	207	Python 3	2025-05-07 19:50:30
5	Nikolaj Munk Binder Jensen	209	Python 3	2025-02-07 11:43:31
6	Farzam Abrishami	223	Python 3	2024-01-27 22:38:33
7	Henri Lemoine	228	Python 3	2022-10-07 03:23:46
8	Keshav Dharshan	248	Python 3	2025-04-22 22:36:36
9	Omair Syed	251	Python 3	2024-02-07 07:46:26
10	Christian Yongwhan Lim	268	Python 3	2023-06-19 23:09:34

#	User	Length	Language	Date
1	Thomas Feld	127	Ruby	2023-08-11 12:48:18
2	Frederik Petersen	557	Ruby	2025-02-07 13:17:45

#	User	Length	Language	Date
1	Artur Khuziakhmetov	740	Rust	2023-09-07 09:35:45
2	Vincent Lagerros	839	Rust	2025-05-28 16:37:15
3	Adam Gausmann	1018	Rust	2022-12-27 18:21:44
4	Chaoyi Yin	1022	Rust	2019-05-13 17:59:58
5	Sarek Høverstad Skotåm	1272	Rust	2021-07-23 18:36:59
6	Paulo Araújo	1484	Rust	2020-03-24 11:56:13
7	Mckinley Xie	2236	Rust	2025-04-22 19:44:31
8	Aaron Lengyel	3575	Rust	2021-11-10 20:46:36
9	Erik Magnusson	4571	Rust	2024-02-29 10:03:38
10	Daniel Anker Hermansen	23346	Rust	2023-03-24 16:05:25

Solution running time distribution