Problem A
Virtual Friends

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Problem statistics

Submissions	12498
Accepted submissions	3110
Submission ratio	24.88%
Authors	2554
Accepted authors	1916
Author ratio	75.02%

#	User	Runtime	Date
1	Hidden user	0.01 s	2016-05-15 19:11:53
2	Sabit Zahin	0.02 s	2015-10-20 20:26:12
3	Maksim Bober	0.03 s	2016-10-01 00:01:52
4	Hidden user	0.03 s	2017-05-01 06:35:29
5	Hidden user	0.03 s	2017-05-01 09:09:21
6	Oscar Cusin	0.04 s	2024-02-01 10:37:35
7	Hidden user	0.04 s	2024-02-14 23:08:34
8	Hidden user	0.04 s	2024-02-21 10:01:51
9	Hidden user	0.07 s	2022-11-14 12:43:37
10	pengin	0.16 s	2022-03-22 11:56:16

#	User	Runtime	Date
1	Anders Petersen	0.17 s	2022-09-14 10:44:45
2	Wojciech Borowiecki	0.28 s	2017-03-07 04:40:50
3	Ben-Richard Ebbesvik	0.28 s	2024-01-05 00:37:22
4	Андрей Титов	0.32 s	2015-12-29 09:07:42
5	Seth Kitchen	0.34 s	2018-02-25 03:39:21
6	Jayant Notani	0.53 s	2020-03-27 22:21:21
7	Frankie Chen	0.66 s	2019-07-30 18:20:57
8	Lukasz	0.80 s	2017-03-12 05:22:38
9	Robbe Decraemer	0.96 s	2020-04-16 19:39:11

#	User	Runtime	Date
1	Agis Daniels	0.02 s	2021-12-12 14:03:26
2	Edgardo Deza	0.03 s	2015-08-31 03:09:26
3	Hidden user	0.03 s	2017-04-13 18:55:13
4	Jonas Nockert	0.03 s	2017-05-15 14:23:13
5	Hidden user	0.03 s	2017-09-29 02:10:08
6	Ebou Jobe	0.03 s	2017-09-29 09:03:33
7	Naufal Makarim	0.03 s	2017-11-19 16:46:14
8	Marouen Helali	0.03 s	2017-11-25 15:06:06
9	Owen Li	0.03 s	2018-02-10 02:24:45
10	Blair Du	0.03 s	2018-02-12 02:11:47

#	User	Runtime	Date
1	Patrick Bahr	0.65 s	2021-02-12 23:14:14
2	Jesper Bengtson	0.73 s	2021-02-13 00:33:12

#	User	Runtime	Date
1	Adam Engsig	0.08 s	2023-05-11 11:22:47
2	Norbert Voelker	0.34 s	2022-10-28 20:24:10
3	Paul Boddington	0.38 s	2016-05-18 05:01:21
4	Vetle Håland Bergstad	0.45 s	2019-03-06 13:59:40
5	Krzysztof Gibuła	0.45 s	2021-05-28 00:35:23

#	User	Runtime	Date
1	Hidden user	0.34 s	2022-01-27 03:21:10
2	Vasiliy Kevroletin	0.57 s	2018-05-24 13:10:25
3	Zach Tschetter	0.81 s	2021-04-17 16:40:29

#	User	Runtime	Date
1	Hidden user	0.12 s	2022-08-07 21:40:18
2	Sven Rönnbäck	0.12 s	2023-10-04 23:04:12
3	Hà Minh Ngọc	0.20 s	2016-08-10 07:18:12
4	Darko Aleksic	0.24 s	2020-03-21 05:56:31
5	Marcus Johansson	0.25 s	2016-09-07 20:19:45
6	Marcus Danielsson	0.26 s	2016-09-07 18:20:25
7	Joachim Borup	0.26 s	2021-02-22 21:03:42
8	Asmus Tørsleff	0.26 s	2022-01-17 00:20:40
9	Marco Vincenzo Karaan	0.27 s	2015-11-04 04:20:45
10	William Fiset	0.28 s	2016-11-04 17:16:53

#	User	Runtime	Date
1	Christopher Walther	0.55 s	2021-04-16 18:35:22
2	Robin	0.57 s	2020-10-13 12:31:47

#	User	Runtime	Date
1	Bjørn Chr. Soltvedt	0.31 s	2016-12-21 02:30:40
2	Christian Cederquist	0.36 s	2023-06-09 08:18:49

#	User	Runtime	Date
1	Björn Holm	0.45 s	2019-04-29 20:23:27
2	Chelsea Hoernemann	0.50 s	2022-11-16 23:02:23
3	Hidden user	0.57 s	2020-04-14 21:18:33
4	Jacob Huebner	0.75 s	2021-05-11 05:08:42
5	Adam Rankin	0.76 s	2023-09-09 18:21:37
6	Garrison Hatcher	0.82 s	2019-11-11 19:08:42
7	Phường Lên	0.94 s	2020-05-30 08:49:34

#	User	Runtime	Date
1	crapcode	0.28 s	2022-06-22 00:19:25

#	User	Runtime	Date
1	Edgardo Deza	0.15 s	2015-08-31 03:59:06
2	Sergey Pashkovsky	0.17 s	2017-11-24 18:43:33
3	Thomas Feld	0.17 s	2020-06-23 13:59:30
4	Yan Kalchevsky	0.18 s	2017-02-11 21:56:56
5	Christofer Ohlsson	0.20 s	2015-05-18 20:40:22
6	Przemysław Curzytek	0.20 s	2017-03-08 01:33:34
7	Tal Melamed	0.20 s	2017-09-15 04:14:12
8	Max Holmberg	0.21 s	2018-11-11 16:48:22
9	So Kimsu	0.24 s	2015-07-07 18:29:39
10	Agis Daniels	0.25 s	2021-12-12 13:44:29

#	User	Runtime	Date
1	Donald Heppner	0.15 s	2017-03-08 05:48:45
2	Hidden user	0.18 s	2019-11-01 15:56:59
3	Hidden user	0.18 s	2019-11-14 12:05:54
4	Hector Arranz	0.18 s	2019-12-27 22:37:04
5	Alexei Fedotov	0.19 s	2019-07-15 17:56:58
6	Connor Johnston	0.20 s	2019-10-24 04:21:25
7	Troels Bjerre Lund	0.21 s	2019-02-23 13:54:06
8	Leon Tham	0.21 s	2019-11-21 02:37:49
9	Daniel Wu	0.21 s	2021-09-24 02:16:26
10	Ryan Tan	0.21 s	2022-03-21 11:11:46

#	User	Runtime	Date
1	Macdara mac an tSionnaigh	0.25 s	2019-10-31 02:17:17
2	Alexandre Arruda	0.26 s	2021-11-22 23:54:08
3	Hidden user	0.28 s	2019-02-25 16:23:47
4	Thomas Feld	0.55 s	2023-08-17 10:28:25

#	User	Runtime	Date
1	Vincent Lagerros	0.01 s	2024-01-31 14:53:36
2	Rasmus Andersson	0.02 s	2024-02-05 23:57:01
3	Connor Skees	0.03 s	2020-10-24 20:02:50
4	Pahlevi Fikri Auliya	0.03 s	2020-11-09 00:50:06
5	Jens Larsen	0.03 s	2021-09-14 22:24:17
6	Christoffer Andersson	0.03 s	2024-02-03 22:00:39
7	Mario Rodriguez	0.04 s	2020-01-19 15:34:39
8	Jonas Ulsnes Jørgensen	0.04 s	2022-01-29 13:07:55
9	Sindbad Walter	0.12 s	2023-09-15 15:17:24
10	Florian Nagel	0.15 s	2019-11-04 11:47:27

#	User	Length	Date
1	Hidden user	1239	2017-05-01 06:35:29
2	Maksim Bober	1317	2016-10-01 00:01:52
3	Sabit Zahin	1371	2015-10-20 20:26:12
4	Hidden user	1888	2022-11-14 12:43:37
5	pengin	2501	2022-03-22 11:56:16
6	Hidden user	4751	2016-05-14 03:10:49
7	Hidden user	5040	2017-05-01 09:09:21
8	Oscar Cusin	8466	2024-02-01 10:25:44
9	Hidden user	76220	2024-02-14 23:08:34
10	Hidden user	77491	2024-02-21 10:01:51

#	User	Length	Date
1	Frankie Chen	2301	2019-07-30 18:20:57
2	Jayant Notani	2414	2020-03-27 22:21:21
3	Robbe Decraemer	2432	2020-04-16 19:39:11
4	Андрей Титов	3108	2015-12-29 09:07:42
5	Ben-Richard Ebbesvik	4791	2024-01-05 00:37:22
6	Anders Petersen	5129	2022-09-14 10:44:45
7	Wojciech Borowiecki	5586	2017-03-07 04:40:50
8	Seth Kitchen	6077	2018-02-25 03:39:21
9	Lukasz	7416	2017-03-12 05:22:38

#	User	Length	Date
1	Elias	607	2021-02-12 16:48:23
2	Markus Mathiasen	616	2021-11-04 19:55:18
3	Zane Yu	634	2019-01-23 14:50:45
4	Valeriu Motroi	672	2016-04-28 18:09:51
5	Brandon Zhang	692	2019-05-03 21:50:27
6	Lim An Jun	693	2023-02-12 05:42:55
7	Thiên Tài Zero	719	2016-11-24 15:06:46
8	Ásmundur Óskar Ásmundsson	721	2019-02-11 14:05:52
9	Gabriel Pereira de Carvalho	732	2019-05-25 19:59:48
10	Hidden user	738	2020-10-17 14:30:53

#	User	Length	Date
1	Jesper Bengtson	2902	2021-02-13 00:42:21
2	Patrick Bahr	3020	2021-02-12 23:14:14

#	User	Length	Date
1	Paul Boddington	1193	2016-05-18 05:01:21
2	Krzysztof Gibuła	1401	2021-05-28 00:35:23
3	Norbert Voelker	1779	2022-10-28 20:24:10
4	Vetle Håland Bergstad	1972	2019-03-06 13:19:35
5	Adam Engsig	3885	2021-04-21 00:12:37

#	User	Length	Date
1	Zach Tschetter	1691	2021-04-17 16:40:29
2	Hidden user	2860	2022-01-27 03:21:34
3	Vasiliy Kevroletin	4333	2018-05-24 13:10:25

#	User	Length	Date
1	Yeung Man Tsung	1058	2022-07-26 17:02:38
2	Troels Bjerre Lund	1089	2021-09-10 14:47:12
3	Kurtis Van Gent	1138	2016-04-05 22:01:26
4	Sujay Vadlakonda	1206	2021-09-11 02:40:06
5	Nathan Leake	1304	2017-02-10 23:24:36
6	Jeremy Lim	1346	2023-12-23 11:18:14
7	Corentin Simon	1346	2016-05-05 11:24:55
8	Peppzerr BD	1370	2023-04-08 07:29:10
9	Josenildo Silva	1373	2017-05-12 22:03:07
10	Sebastian Secelean	1374	2016-10-01 21:43:47

#	User	Length	Date
1	Robin	1076	2020-10-13 12:31:47
2	Christopher Walther	3139	2021-04-16 18:35:22

#	User	Length	Date
1	Christian Cederquist	977	2023-06-09 08:17:08
2	Bjørn Chr. Soltvedt	5982	2016-12-21 02:30:40

#	User	Length	Date
1	Adam Rankin	1310	2023-09-09 18:21:37
2	Garrison Hatcher	1786	2019-11-11 19:08:42
3	Phường Lên	1910	2020-05-30 08:49:34
4	Jacob Huebner	2230	2021-05-11 05:08:42
5	Hidden user	2336	2020-04-14 21:18:33
6	Björn Holm	2809	2019-04-29 20:23:27
7	Chelsea Hoernemann	3119	2022-11-16 23:02:23

#	User	Length	Date
1	crapcode	672	2022-06-21 23:38:07

#	User	Length	Date
1	Thomas Feld	470	2020-06-23 13:59:30
2	Andreas Björklund	549	2019-05-08 20:03:21
3	Nathan Villanueva	565	2017-02-11 00:38:17
4	Vinit Udasi	623	2022-11-03 21:18:37
5	Anthony Sistilli	641	2017-06-18 07:21:15
6	Alfredo Beaumont	645	2018-02-25 00:04:47
7	Kevin Tang	691	2019-03-15 01:50:08
8	Thore Husfeldt	707	2018-11-17 09:19:26
9	Frederik Højholt	740	2016-09-04 21:49:32
10	Ida Bredal Skjørten	769	2016-11-10 00:24:13

#	User	Length	Date
1	Thibault Raffaillac	205	2023-08-15 22:13:03
2	Guillaume SCHMITT	305	2023-08-15 16:23:31
3	Kelly Dance	324	2022-10-21 05:47:21
4	benoit belasco	348	2023-08-15 15:21:53
5	Henri Lemoine	427	2022-09-10 06:03:10
6	Zac Friggstad	440	2020-02-14 15:10:26
7	Reshab Chhabra	485	2018-01-16 01:42:24
8	Jason Cannon	508	2020-11-27 22:24:33
9	Oskar Haarklou Veileborg	524	2021-02-12 16:16:35
10	Vedant Vyas	542	2020-12-11 22:48:55

#	User	Length	Date
1	Thomas Feld	145	2023-08-17 10:33:20
2	Hidden user	675	2019-02-25 16:23:47
3	Macdara mac an tSionnaigh	958	2019-10-31 02:17:17
4	Alexandre Arruda	1472	2021-11-22 23:54:08

#	User	Length	Date
1	Chaoyi Yin	1803	2019-01-23 02:10:06
2	Chen Weikang	2058	2019-01-19 23:21:38
3	Rasmus Andersson	2147	2024-02-05 23:57:01
4	Oskar Nehlin	2314	2018-11-05 19:48:42
5	Mario Rodriguez	2387	2020-01-19 15:54:56
6	Eric Pinter	2617	2021-11-28 00:44:13
7	Jonas Ulsnes Jørgensen	2909	2022-01-29 13:07:55
8	Connor Skees	3006	2020-10-24 19:49:52
9	Sindbad Walter	3023	2023-09-15 15:17:24
10	Vincent Lagerros	3404	2024-01-31 14:31:05

Solution running time distribution