Problem A
Arctic Network — Problem Statistics

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Submissions	5161
Accepted submissions	1808
Submission ratio	35.03%
Authors	1438
Full solves [?]	1223
Full solve Ratio	85.05%

#	User	Runtime	Language	Date
1	Alexander Bilde Pedersen	0.01 s	C	2025-01-28 18:42:15
2	Mirel Cosulschi	0.05 s	C	2024-12-15 23:04:24
3	Chua Hou	0.06 s	C	2021-04-24 05:16:21
4	Prateek Jain	0.07 s	C	2015-06-16 13:39:26
5	Olav Røthe Bakken	0.07 s	C	2017-03-12 18:34:15
6	Subham Swastik Dora	0.07 s	C	2017-07-01 16:15:58
7	Collin Baker	0.07 s	C	2017-10-05 18:31:14
8	RiccardoB	0.07 s	C	2019-03-28 16:23:51
9	Денис Соболев	0.07 s	C	2019-05-12 09:33:30
10	Ivan Petrov	0.07 s	C	2019-12-18 10:18:47

#	User	Runtime	Language	Date
1	Simon Ståhlberg	0.08 s	C#	2014-03-31 13:41:27
2	Andriy Zyevakov	0.15 s	C#	2025-01-01 12:36:38
3	Onur Bıyık	0.20 s	C#	2023-03-15 19:27:01
4	Jayant Notani	0.21 s	C#	2020-04-17 23:44:19

#	User	Runtime	Language	Date
1	Yuanchen Li	0.00 s	C++	2017-09-26 07:55:36
2	Dumitru Damaschin	0.00 s	C++	2019-04-02 16:56:05
3	Hamilton Wang	0.00 s	C++	2023-03-09 17:56:43
4	Gabriel West	0.00 s	C++	2023-09-28 05:01:15
5	Merlin Morton	0.00 s	C++	2024-09-18 06:38:52
6	Abuzar Rasool	0.00 s	C++	2024-12-06 16:31:25
7	Andreas Gabrielsson	0.01 s	C++	2013-03-05 14:44:28
8	Kári Mímisson	0.01 s	C++	2014-12-08 00:01:46
9	Hidden user	0.01 s	C++	2014-12-08 00:47:47
10	Bùi Văn Mệnh	0.01 s	C++	2016-07-11 06:28:14

#	User	Runtime	Language	Date
1	Việt Hà Nguyễn	0.22 s	Go	2016-07-01 12:42:45

#	User	Runtime	Language	Date
1	Nicholas Russell Saerang	0.06 s	Java	2021-03-26 08:48:53
2	Sven Rönnbäck	0.12 s	Java	2023-10-22 20:12:59
3	Marco Vincenzo Karaan	0.13 s	Java	2015-09-21 10:57:18
4	Benjamin Laurence Erickson	0.13 s	Java	2016-10-07 01:53:28
5	Bjørn Dons	0.13 s	Java	2018-12-12 18:36:29
6	Erik Baalhuis	0.14 s	Java	2015-10-01 02:10:56
7	Crystal Sharpe	0.14 s	Java	2020-07-26 05:58:03
8	Ong Wei Hong	0.14 s	Java	2022-07-26 15:30:56
9	Lew Choon Hean	0.15 s	Java	2024-04-13 09:50:46
10	Hidden user	0.16 s	Java	2020-11-15 10:46:47

#	User	Runtime	Language	Date
1	Godmar Back	0.90 s	JavaScript (Node.js)	2019-01-11 14:11:20
2	Ricardo	0.90 s	JavaScript (Node.js)	2020-10-16 11:48:39

#	User	Runtime	Language	Date
1	Ola Næss Kaldestad	0.09 s	JavaScript (SpiderMonkey)	2017-03-08 23:47:58
2	Bjørn Chr. Soltvedt	0.19 s	JavaScript (SpiderMonkey)	2024-06-06 03:11:26
3	Christian Pilegaard Cederquist	0.32 s	JavaScript (SpiderMonkey)	2023-07-05 00:23:33
4	Magnar Myrtveit	1.10 s	JavaScript (SpiderMonkey)	2017-02-07 13:11:54

#	User	Runtime	Language	Date
1	Luca Mueller	0.71 s	Kotlin	2024-09-25 05:01:17
2	Hidden user	0.74 s	Kotlin	2020-04-18 18:20:50
3	Ali M. Nekoh	0.82 s	Kotlin	2025-06-11 17:53:37
4	Phường Lên	0.88 s	Kotlin	2020-01-21 01:39:01

#	User	Runtime	Language	Date
1	Caleb Austin	0.84 s	Lua	2024-11-03 00:19:04

#	User	Runtime	Language	Date
1	Bùi Việt Dũng	0.15 s	Pascal	2020-09-15 23:17:55

#	User	Runtime	Language	Date
1	Andreas Björklund	0.29 s	Python 2	2019-10-08 16:46:54
2	Knut Anders Stokke	0.36 s	Python 2	2017-02-24 00:41:01
3	Hidden user	0.55 s	Python 2	2018-12-11 20:02:37
4	Steven Hwang	0.55 s	Python 2	2020-05-13 17:39:36
5	Anton Lyxell	0.59 s	Python 2	2019-12-19 12:31:28
6	Sivasankaran D	0.80 s	Python 2	2026-01-21 18:03:31
7	Lars Åström	0.89 s	Python 2	2019-06-18 23:33:44
8	Hidden user	0.90 s	Python 2	2017-06-20 23:26:21
9	Martin Jackson	1.11 s	Python 2	2016-08-22 00:44:22

#	User	Runtime	Language	Date
1	Hidden user	0.07 s	Python 3	2026-02-13 07:39:58
2	Ryan Tan	0.11 s	Python 3	2022-04-09 10:36:21
3	Shuyang Bian	0.19 s	Python 3	2023-06-03 03:29:46
4	Clement Oh	0.22 s	Python 3	2023-12-12 15:25:25
5	Thomas Olinger	0.22 s	Python 3	2024-09-30 05:26:34
6	Joseph Chau	0.23 s	Python 3	2024-04-01 03:12:12
7	Hidden user	0.23 s	Python 3	2025-11-02 18:58:58
8	Thibault Raffaillac	0.28 s	Python 3	2019-10-28 10:30:06
9	Iman Khodadi	0.28 s	Python 3	2024-01-18 14:38:32
10	Lin Yuen (Rvhs)	0.28 s	Python 3	2024-08-01 14:13:59

#	User	Runtime	Language	Date
1	Thomas Feld	1.60 s	Ruby	2025-11-24 12:38:41

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2024-09-06 00:46:30
2	Jakob Rødal Skaar	0.01 s	Rust	2024-03-20 18:00:40
3	Eskil Queseth	0.02 s	Rust	2020-09-14 10:50:21
4	Nicholas Bachmann Tjørnelund	0.03 s	Rust	2021-03-06 15:03:13
5	HuaiYuan Jing	0.03 s	Rust	2025-08-15 20:02:48
6	Hidden user	0.05 s	Rust	2023-05-01 11:49:38
7	Eric Pinter	0.13 s	Rust	2021-07-30 19:45:01

#	User	Length	Language	Date
1	Daniel S	861	C	2021-04-06 10:42:57
2	RiccardoB	888	C	2019-03-28 16:23:51
3	Денис Соболев	888	C	2019-05-12 09:33:30
4	Ivan Petrov	888	C	2019-12-18 10:18:47
5	Subham Swastik Dora	1064	C	2017-07-02 02:52:47
6	Prateek Jain	1119	C	2015-06-16 13:39:26
7	Chua Hou	1836	C	2021-04-24 05:16:21
8	Olav Røthe Bakken	1840	C	2017-03-12 18:34:15
9	Mirel Cosulschi	1991	C	2024-12-15 23:04:24
10	Collin Baker	2018	C	2017-10-05 18:31:14

#	User	Length	Language	Date
1	Onur Bıyık	2735	C#	2023-03-15 19:27:01
2	Jayant Notani	2969	C#	2020-04-17 23:44:19
3	Simon Ståhlberg	7751	C#	2014-03-31 13:41:27
4	Andriy Zyevakov	10025	C#	2025-01-01 12:36:38

#	User	Length	Language	Date
1	Johan Wind	792	C++	2018-09-29 17:19:25
2	Dexter Kwan	873	C++	2023-05-02 18:42:44
3	chendaohan	881	C++	2024-03-24 12:46:01
4	Donald Dong	883	C++	2019-04-18 21:43:31
5	Minh Huy Nguyễn	890	C++	2020-07-18 20:06:05
6	Antonio Molina Lovett	896	C++	2017-01-25 21:50:02
7	Mohamedreda Glioula	898	C++	2018-08-14 14:32:27
8	Hidden user	917	C++	2024-11-30 03:39:37
9	Teetat Thamronglak	961	C++	2024-07-18 22:23:02
10	William Gan	982	C++	2017-02-17 11:33:19

#	User	Length	Language	Date
1	Việt Hà Nguyễn	3113	Go	2016-07-01 12:42:45

#	User	Length	Language	Date
1	Doug Goodman	1246	Java	2016-10-10 20:59:07
2	Hidden user	1351	Java	2008-10-16 16:38:22
3	Yeung Man Tsung	1420	Java	2022-07-27 08:32:49
4	巢鹏宁	1449	Java	2014-09-27 04:54:07
5	Ong Wei Hong	1469	Java	2022-07-26 15:30:56
6	Ron Himmel	1589	Java	2023-11-16 10:20:37
7	Rajpreet Singh	1589	Java	2023-11-24 16:40:16
8	Mitch Price	1618	Java	2016-10-06 23:51:35
9	Nicholas Russell Saerang	1629	Java	2021-03-26 08:48:53
10	Sam Huynh	1636	Java	2021-09-30 06:35:12

#	User	Length	Language	Date
1	Ricardo	1896	JavaScript (Node.js)	2020-10-16 11:48:39
2	Godmar Back	2010	JavaScript (Node.js)	2019-01-11 14:15:18

#	User	Length	Language	Date
1	Ola Næss Kaldestad	1372	JavaScript (SpiderMonkey)	2017-03-09 01:42:08
2	Magnar Myrtveit	1488	JavaScript (SpiderMonkey)	2017-02-07 13:11:54
3	Christian Pilegaard Cederquist	1488	JavaScript (SpiderMonkey)	2023-07-05 00:23:33
4	Bjørn Chr. Soltvedt	19495	JavaScript (SpiderMonkey)	2024-06-06 03:11:26

#	User	Length	Language	Date
1	Luca Mueller	1368	Kotlin	2024-09-25 04:56:46
2	Ali M. Nekoh	1639	Kotlin	2025-06-11 17:53:37
3	Hidden user	2323	Kotlin	2020-04-18 18:20:50
4	Phường Lên	2343	Kotlin	2020-01-21 01:39:01

#	User	Length	Language	Date
1	Caleb Austin	1305	Lua	2024-11-03 00:19:04

#	User	Length	Language	Date
1	Bùi Việt Dũng	1315	Pascal	2020-09-15 23:17:55

#	User	Length	Language	Date
1	Andreas Björklund	731	Python 2	2019-10-08 16:46:54
2	Lars Åström	877	Python 2	2019-06-18 23:33:44
3	Sivasankaran D	1114	Python 2	2026-01-21 18:03:31
4	Hidden user	1226	Python 2	2018-12-11 20:02:37
5	Knut Anders Stokke	1442	Python 2	2017-02-24 00:41:01
6	Hidden user	1692	Python 2	2017-06-20 23:26:21
7	Martin Jackson	2176	Python 2	2016-08-22 00:44:22
8	Steven Hwang	2566	Python 2	2020-05-13 17:39:36
9	Anton Lyxell	10699	Python 2	2019-12-19 12:31:28

#	User	Length	Language	Date
1	Owen Strength	314	Python 3	2026-02-17 22:17:30
2	Bo Stokes	375	Python 3	2024-09-14 09:35:21
3	Ahmed Chamseddine	425	Python 3	2024-11-22 21:23:02
4	Kelly Dance	560	Python 3	2023-02-10 19:47:05
5	Clement Oh	646	Python 3	2024-02-09 07:47:16
6	Thibault Raffaillac	785	Python 3	2019-10-28 10:30:06
7	Gustavo Fadel	820	Python 3	2021-05-02 06:39:51
8	Casper Rysgaard	849	Python 3	2022-04-21 10:57:35
9	Thomas Olinger	888	Python 3	2024-09-30 05:26:34
10	Hidden user	929	Python 3	2023-03-26 21:21:46

#	User	Length	Language	Date
1	Thomas Feld	236	Ruby	2025-11-24 13:00:15

#	User	Length	Language	Date
1	Nicholas Bachmann Tjørnelund	2177	Rust	2021-03-06 15:03:13
2	HuaiYuan Jing	2238	Rust	2025-08-15 20:02:48
3	Jakob Rødal Skaar	2340	Rust	2024-03-20 18:04:14
4	Eskil Queseth	2582	Rust	2020-09-14 10:50:21
5	Eric Pinter	2841	Rust	2021-07-30 19:45:01
6	Hidden user	3074	Rust	2023-05-01 11:49:38
7	Vincent Lagerros	9557	Rust	2024-05-22 00:43:16

Solution running time distribution