Problem I
Landline Telephone Network — Problem Statistics

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Submissions	4295
Accepted submissions	843
Submission ratio	19.63%
Authors	628
Full solves [?]	513
Full solve Ratio	81.69%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.03 s	C	2019-07-23 15:49:43
2	Mirel Cosulschi	0.03 s	C	2022-11-18 20:43:28
3	Alexander Bilde Pedersen	0.03 s	C	2024-02-21 15:08:53
4	Adam Evans	0.08 s	C	2016-03-16 02:34:09

#	User	Runtime	Language	Date
1	Edvin Mako	1.30 s	C#	2020-02-27 23:47:25

#	User	Runtime	Language	Date
1	Leif Eriksson	0.01 s	C++	2018-08-22 13:37:52
2	Amar Topalovic	0.01 s	C++	2021-02-20 18:35:59
3	Jiacheng Wu	0.01 s	C++	2022-02-10 10:01:53
4	Hamilton Wang	0.01 s	C++	2023-03-03 04:57:49
5	Moses Mayer	0.01 s	C++	2023-06-20 10:33:27
6	Rafaël Bocquet	0.02 s	C++	2015-10-24 19:51:37
7	Simon Lindholm	0.02 s	C++	2015-10-24 19:54:36
8	Yilun Chong	0.02 s	C++	2015-10-24 21:33:27
9	Karthik Abinav	0.02 s	C++	2015-10-24 22:30:36
10	Jeffrey Zhang	0.02 s	C++	2015-10-24 22:35:31

#	User	Runtime	Language	Date
1	Frank Endriss	0.13 s	Go	2021-12-24 00:16:34

#	User	Runtime	Language	Date
1	Stian	0.62 s	Haskell	2020-02-15 00:33:49

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.08 s	Java	2025-05-01 16:59:30
2	Bjørn Dons	0.13 s	Java	2020-06-18 22:13:18
3	Crystal Sharpe	0.15 s	Java	2020-06-18 21:37:22
4	Harrison Carpenter	0.15 s	Java	2025-05-26 20:51:50
5	Hidden user	0.17 s	Java	2025-04-11 08:44:13
6	Alvin Lee	0.20 s	Java	2024-11-01 23:16:12
7	Sam Reinehr	0.22 s	Java	2018-10-22 01:36:29
8	Amon Al-khatib	0.23 s	Java	2021-09-01 04:19:34
9	Måns Magnusson	0.24 s	Java	2016-09-04 20:56:52
10	Nicholas Cristian	0.25 s	Java	2018-11-15 15:04:51

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.22 s	JavaScript (SpiderMonkey)	2023-08-16 02:27:02

#	User	Runtime	Language	Date
1	Jacob Huebner	0.28 s	Kotlin	2021-05-31 19:30:04
2	Nicholas Johnson	0.37 s	Kotlin	2021-05-30 21:39:22
3	Слава Гуляев	0.46 s	Kotlin	2017-11-16 06:02:54
4	Ditlef Alexander Diseth	0.64 s	Kotlin	2020-02-17 13:52:42
5	Benjamin Ye	0.85 s	Kotlin	2023-01-23 19:05:50

#	User	Runtime	Language	Date
1	Harrison Carpenter	0.44 s	Perl	2025-10-23 01:43:20

#	User	Runtime	Language	Date
1	Hidden user	0.17 s	Python 2	2019-09-25 14:29:27
2	Øyvind Haarberg	0.18 s	Python 2	2018-04-22 11:52:51
3	Lars Åström	0.18 s	Python 2	2018-11-06 10:24:25
4	Andreas Björklund	0.20 s	Python 2	2022-03-27 19:24:51
5	Olav Røthe Bakken	0.27 s	Python 2	2020-02-14 13:50:26

#	User	Runtime	Language	Date
1	truyen thu	0.10 s	Python 3	2025-05-18 07:14:18
2	Quang Dao	0.10 s	Python 3	2025-05-20 16:13:29
3	Lorenzo Spada	0.11 s	Python 3	2024-11-09 11:02:17
4	Cohen Calvert	0.12 s	Python 3	2025-10-03 02:33:14
5	Tien Duc Ho	0.12 s	Python 3	2025-10-11 03:37:20
6	Eric Lee	0.12 s	Python 3	2025-10-19 11:19:13
7	blin	0.12 s	Python 3	2025-10-20 07:09:17
8	Zahid Hasan	0.13 s	Python 3	2025-10-15 04:58:12
9	Hidden user	0.13 s	Python 3	2025-10-17 07:43:20
10	Jimi Lin	0.13 s	Python 3	2025-10-19 20:31:41

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2025-03-22 23:53:18
2	Kian Kasad	0.01 s	Rust	2025-04-02 22:39:20
3	Jan Inge Sande	0.02 s	Rust	2025-02-11 13:56:43
4	Logan Travis	0.02 s	Rust	2025-10-21 04:53:59
5	Daniel Anker Hermansen	0.03 s	Rust	2024-10-01 23:13:55
6	Hidden user	0.03 s	Rust	2025-02-15 18:56:33
7	Tarjei Landøy	0.03 s	Rust	2025-02-18 20:36:13
8	Mckinley Xie	0.03 s	Rust	2025-03-29 22:39:57
9	Krish Lal	0.03 s	Rust	2025-10-03 10:11:10

#	User	Length	Language	Date
1	Mirel Cosulschi	2102	C	2022-11-18 20:43:28
2	Alexander Bilde Pedersen	2654	C	2024-02-21 15:08:53
3	Ivan Petrov	2799	C	2019-07-23 15:49:43
4	Adam Evans	4603	C	2016-03-16 02:34:09

#	User	Length	Language	Date
1	Edvin Mako	6053	C#	2020-02-27 23:47:25

#	User	Length	Language	Date
1	Hidden user	1071	C++	2019-03-11 18:19:13
2	Adil Rasiyani	1072	C++	2023-03-30 09:32:57
3	Markus Mathiasen	1128	C++	2023-07-26 13:38:28
4	Jaehyun Park	1225	C++	2015-10-24 20:20:05
5	Oskar Haarklou Veileborg	1249	C++	2018-11-07 10:54:18
6	Phan Minh Hoàng	1257	C++	2015-12-22 04:21:31
7	Yeung Man Tsung	1269	C++	2022-06-21 17:55:23
8	Magnus Hegdahl	1279	C++	2021-09-13 02:28:18
9	Hidden user	1342	C++	2025-02-21 12:28:56
10	ณัฐวุฒิ เจนศักดิ์ดา	1355	C++	2025-04-26 07:51:26

#	User	Length	Language	Date
1	Frank Endriss	5299	Go	2021-12-24 00:29:19

#	User	Length	Language	Date
1	Stian	3330	Haskell	2020-02-15 00:33:49

#	User	Length	Language	Date
1	Doug Goodman	1807	Java	2017-07-17 19:50:05
2	Hidden user	1807	Java	2017-08-08 19:19:51
3	Benjamin Scott Pruett	1947	Java	2015-10-24 21:40:14
4	Darrin Wiley	2341	Java	2015-10-24 22:59:15
5	Ilia Jarikov	2342	Java	2016-10-25 17:39:02
6	Xingfang Yuan	2382	Java	2015-10-27 16:47:47
7	Raj Niti	2443	Java	2022-03-30 03:36:29
8	K C	2444	Java	2022-03-31 02:32:08
9	Brett Fazio	2526	Java	2018-11-06 21:43:51
10	Emilie Hyslop	2600	Java	2021-05-03 09:11:48

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	2418	JavaScript (SpiderMonkey)	2023-08-16 02:27:02

#	User	Length	Language	Date
1	Benjamin Ye	1757	Kotlin	2023-01-23 19:05:50
2	Слава Гуляев	2961	Kotlin	2017-11-16 06:02:54
3	Jacob Huebner	3042	Kotlin	2021-05-31 19:30:04
4	Nicholas Johnson	4243	Kotlin	2021-05-30 21:39:22
5	Ditlef Alexander Diseth	6363	Kotlin	2020-02-17 13:52:42

#	User	Length	Language	Date
1	Harrison Carpenter	2323	Perl	2025-10-23 01:43:20

#	User	Length	Language	Date
1	Andreas Björklund	1162	Python 2	2022-03-27 19:24:51
2	Hidden user	1359	Python 2	2019-09-25 14:22:02
3	Olav Røthe Bakken	1440	Python 2	2020-02-14 13:50:26
4	Lars Åström	1505	Python 2	2018-11-06 10:18:23
5	Øyvind Haarberg	2423	Python 2	2018-04-22 11:52:51

#	User	Length	Language	Date
1	Anshuman Dash	725	Python 3	2023-01-26 23:22:27
2	Zac Friggstad	1019	Python 3	2022-01-31 04:07:53
3	Max Graves	1069	Python 3	2022-09-21 01:48:45
4	Daniel Lokshtanov	1102	Python 3	2023-01-25 07:24:47
5	Justin Nguyen Vo	1218	Python 3	2023-01-20 08:52:14
6	Simen Sørensen	1260	Python 3	2025-02-12 16:04:00
7	Jakob Rødal Skaar	1272	Python 3	2025-02-14 14:41:39
8	Lorenzo Spada	1294	Python 3	2024-11-09 11:02:17
9	Nicholas Russell Saerang	1327	Python 3	2023-08-19 12:25:40
10	Iman Khodadi	1359	Python 3	2024-01-20 14:51:38

#	User	Length	Language	Date
1	Hidden user	3023	Rust	2025-02-15 18:56:33
2	Mckinley Xie	3175	Rust	2025-03-29 22:39:57
3	Logan Travis	4573	Rust	2025-10-21 04:57:17
4	Kian Kasad	5839	Rust	2025-04-02 22:39:20
5	Krish Lal	6045	Rust	2025-10-03 10:11:10
6	Jan Inge Sande	6406	Rust	2025-02-11 13:56:43
7	Tarjei Landøy	6425	Rust	2025-02-18 20:45:30
8	Vincent Lagerros	9134	Rust	2024-05-25 19:17:25
9	Daniel Anker Hermansen	28660	Rust	2024-10-01 23:13:55

Solution running time distribution