Problem A
Zigzag — Problem Statistics

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Submissions	1087
Accepted submissions	430
Submission ratio	39.56%
Authors	372
Accepted authors	296
Author ratio	79.57%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.02 s	C	2019-01-22 10:20:36
2	Eyleifur Bjarkason	0.02 s	C	2019-01-22 13:37:15
3	Collin Rumpca	0.08 s	C	2018-08-24 00:56:43
4	Þórður Agust	0.09 s	C	2019-01-24 23:38:42

#	User	Runtime	Language	Date
1	Vũ Bảo Châu	0.46 s	C#	2022-02-24 17:47:29

#	User	Runtime	Language	Date
1	Miorel Palii	0.02 s	C++	2018-03-03 10:10:37
2	Antoni Guz	0.02 s	C++	2018-03-28 00:06:49
3	Brandon Zhang	0.02 s	C++	2020-04-24 22:00:04
4	Alexander Kravberg	0.02 s	C++	2023-12-31 07:29:47
5	Donald Dong	0.03 s	C++	2018-05-21 03:36:54
6	Ásmundur Óskar Ásmundsson	0.03 s	C++	2019-01-24 02:26:37
7	Cameron Custer	0.03 s	C++	2021-10-10 20:54:46
8	Pranay Joshi	0.04 s	C++	2023-12-31 05:50:04
9	Hidden user	0.04 s	C++	2024-12-17 16:47:09
10	Rafael Herman	0.08 s	C++	2018-03-26 08:58:55

#	User	Runtime	Language	Date
1	Joseph McKinsey	1.55 s	Haskell	2019-09-16 00:58:36
2	Qi Ji	1.78 s	Haskell	2018-06-21 09:19:58
3	Brent Yorgey	1.83 s	Haskell	2018-06-20 16:07:18

#	User	Runtime	Language	Date
1	Bjørn Dons	0.14 s	Java	2022-04-17 09:54:50
2	Hidden user	0.23 s	Java	2018-10-28 07:53:40
3	James McDowell	0.24 s	Java	2018-10-13 00:36:57
4	Doug Goodman	0.25 s	Java	2018-06-21 19:07:49
5	Hidden user	0.26 s	Java	2019-07-06 20:30:09
6	Andrew Polizzotto	0.28 s	Java	2020-11-11 08:34:28
7	Brett Fazio	0.31 s	Java	2019-05-04 02:42:55
8	Neil Thistlethwaite	0.32 s	Java	2021-03-05 02:32:53
9	Benjamin Reidys	0.33 s	Java	2018-11-21 20:06:14
10	Benjamin Teskey	0.34 s	Java	2018-05-06 00:56:32

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.28 s	JavaScript (SpiderMonkey)	2018-08-09 00:24:48

#	User	Runtime	Language	Date
1	Ryan McCampbell	0.43 s	Kotlin	2018-10-13 02:04:35

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.10 s	Pascal	2018-05-03 18:53:36

#	User	Runtime	Language	Date
1	Hermon Mulat	0.15 s	Python 2	2018-10-04 21:47:40
2	Andreas Björklund	0.32 s	Python 2	2019-06-06 17:14:41

#	User	Runtime	Language	Date
1	Wouter Dijkstra	0.11 s	Python 3	2022-07-01 18:03:01
2	Miguel Navarro Carrillo	0.21 s	Python 3	2025-07-28 08:49:47
3	UTM CS AI	0.24 s	Python 3	2024-10-03 03:13:49
4	Benjamin Z White	0.25 s	Python 3	2023-07-12 14:16:32
5	Turner Atwood	0.26 s	Python 3	2020-10-17 00:49:25
6	Hidden user	0.26 s	Python 3	2024-10-05 09:37:39
7	Patrick Jung	0.27 s	Python 3	2023-04-12 05:35:23
8	Josh Taylor	0.28 s	Python 3	2022-03-05 21:05:05
9	Jason Yin	0.28 s	Python 3	2024-06-29 04:44:30
10	Kadriye Yildiz	0.28 s	Python 3	2024-08-24 20:43:42

#	User	Runtime	Language	Date
1	Thomas Feld	0.52 s	Ruby	2023-07-03 15:19:13
2	Donald Dong	1.47 s	Ruby	2018-05-21 03:59:01

#	User	Runtime	Language	Date
1	Daniel Anker Hermansen	0.07 s	Rust	2023-05-21 00:00:51
2	Ari Páll Agnarsson	0.12 s	Rust	2023-01-10 03:34:42
3	Edvard All	0.13 s	Rust	2021-08-26 20:47:08

#	User	Length	Language	Date
1	Þórður Agust	410	C	2019-01-24 23:38:42
2	Collin Rumpca	635	C	2018-08-24 00:56:43
3	Bergur Snorrason	734	C	2019-01-22 10:33:37
4	Eyleifur Bjarkason	5844	C	2019-01-22 13:36:13

#	User	Length	Language	Date
1	Vũ Bảo Châu	2171	C#	2022-02-24 17:47:29

#	User	Length	Language	Date
1	Ghazal Rabiei	388	C++	2020-05-09 14:20:53
2	Johan Wind	415	C++	2018-04-04 20:26:46
3	Nathaniel Ang	417	C++	2020-05-21 10:30:14
4	Vincent Lin	418	C++	2018-10-24 02:35:11
5	Li Da	418	C++	2018-12-24 04:33:38
6	Glenn	418	C++	2025-01-06 18:20:27
7	Saujas Nandi	433	C++	2018-11-07 05:39:44
8	Samuel Tan	441	C++	2025-01-08 18:02:57
9	Adriel Tan	452	C++	2025-01-12 20:04:51
10	Nguyen An Thinh	452	C++	2025-01-08 16:47:48

#	User	Length	Language	Date
1	Qi Ji	451	Haskell	2018-06-21 09:19:58
2	Joseph McKinsey	692	Haskell	2019-09-16 00:58:36
3	Brent Yorgey	1150	Haskell	2018-06-20 16:07:18

#	User	Length	Language	Date
1	Baku	520	Java	2019-10-24 22:57:31
2	Ramin Taghizada	656	Java	2020-04-29 22:49:11
3	Andrew Niedringhaus	659	Java	2018-10-13 02:07:54
4	Doug Goodman	703	Java	2018-06-21 19:07:49
5	Qritel Abdelilah	707	Java	2018-05-02 23:51:40
6	Rachael Hazlett	788	Java	2018-10-13 02:14:47
7	Hidden user	814	Java	2019-05-05 21:15:52
8	Hidden user	832	Java	2018-10-28 07:53:40
9	Felix Park	840	Java	2018-10-13 22:33:37
10	John Park	889	Java	2018-10-13 01:27:50

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	729	JavaScript (SpiderMonkey)	2018-08-09 00:24:48

#	User	Length	Language	Date
1	Ryan McCampbell	1555	Kotlin	2018-10-13 02:04:35

#	User	Length	Language	Date
1	Ingemar Ragnemalm	1047	Pascal	2018-05-03 18:53:36

#	User	Length	Language	Date
1	Hermon Mulat	413	Python 2	2018-10-04 21:49:12
2	Andreas Björklund	462	Python 2	2019-06-06 17:14:41

#	User	Length	Language	Date
1	Benjamin Z White	105	Python 3	2023-07-12 14:16:32
2	Nicholas Russell Saerang	113	Python 3	2024-10-12 15:51:00
3	Guk Yi Siong	120	Python 3	2025-05-15 21:02:25
4	Wouter Dijkstra	121	Python 3	2022-07-01 17:18:27
5	Paco Criado	204	Python 3	2023-11-22 14:07:55
6	Hidden user	208	Python 3	2022-10-29 21:57:33
7	Lawry Sorenson	214	Python 3	2023-02-18 21:15:17
8	Matthew Tran	241	Python 3	2021-02-25 23:21:55
9	Forrest Burton	251	Python 3	2022-03-11 20:50:56
10	Lghoumaigui Youssef	274	Python 3	2018-08-08 12:51:03

#	User	Length	Language	Date
1	Thomas Feld	69	Ruby	2023-07-03 15:24:40
2	Donald Dong	803	Ruby	2018-05-21 03:59:01

#	User	Length	Language	Date
1	Edvard All	1481	Rust	2021-08-26 20:47:08
2	Ari Páll Agnarsson	6824	Rust	2023-01-10 03:40:17
3	Daniel Anker Hermansen	19591	Rust	2023-05-21 00:00:51

Solution running time distribution