Problem A
Where's My Internet?? — Problem Statistics

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Submissions	27305
Accepted submissions	8196
Submission ratio	30.02%
Authors	6164
Full solves [?]	5187
Full solve Ratio	84.15%

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	C	2017-05-16 11:28:17
2	Bergur Snorrason	0.03 s	C	2019-02-25 20:38:45
3	Eyleifur Bjarkason	0.03 s	C	2019-02-27 18:15:32
4	Julian Duniec	0.03 s	C	2023-09-22 10:24:55
5	Fred Arnold	0.04 s	C	2019-09-24 14:50:15
6	Thibault Raffaillac	0.05 s	C	2018-11-26 17:43:07
7	Seth Carter	0.05 s	C	2019-09-17 13:33:27
8	Mirel Cosulschi	0.05 s	C	2022-12-04 21:50:55
9	Vadim Tihomirov	0.06 s	C	2017-01-27 13:50:32
10	Eric Dand	0.06 s	C	2017-06-08 04:37:17

#	User	Runtime	Language	Date
1	Frankie Chen	0.28 s	C#	2019-08-21 17:56:36
2	Mads Pedersen	0.36 s	C#	2019-10-10 20:45:10
3	Jonas Røygaard	0.37 s	C#	2019-10-10 17:36:17
4	Hidden user	0.37 s	C#	2023-12-08 07:48:36
5	Andriy Zyevakov	0.43 s	C#	2019-07-09 17:50:59
6	Miriam Logan	0.43 s	C#	2023-12-06 22:06:53
7	Jacob Burritt	0.48 s	C#	2023-12-09 05:03:02
8	Nicholas Waddoups	0.51 s	C#	2023-12-09 03:04:12
9	Tyler DeBruin	0.59 s	C#	2023-12-02 02:15:28
10	Alex Laurila	0.67 s	C#	2023-05-19 18:20:41

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	C++	2018-03-24 08:37:28
2	Zane Yu	0.02 s	C++	2020-01-09 03:42:15
3	Agis Daniels	0.02 s	C++	2020-03-05 19:45:28
4	Leif Eriksson	0.02 s	C++	2022-03-04 10:45:26
5	Grae Yeandle	0.03 s	C++	2017-02-10 15:48:34
6	Troels Bjerre Lund	0.03 s	C++	2018-11-09 22:02:01
7	Tanner Hoke	0.03 s	C++	2019-02-02 23:23:20
8	Garðar Ingvarsson	0.03 s	C++	2019-03-03 11:29:53
9	Otto Stadel Clausen	0.03 s	C++	2019-10-02 20:53:32
10	Nikolaj Bläser	0.03 s	C++	2019-10-03 21:58:02

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.40 s	F#	2023-03-29 17:13:18

#	User	Runtime	Language	Date
1	Péter Szakszon	0.19 s	Go	2021-12-19 12:24:53
2	Maksar Shipkhineev	0.48 s	Go	2025-06-05 08:53:48
3	Jonas Mittnacht	0.50 s	Go	2024-02-14 17:08:16
4	Scott Dauer	0.58 s	Go	2020-09-20 20:42:30
5	James Robb	0.72 s	Go	2020-04-30 12:45:17
6	James Robb	0.73 s	Go	2020-05-12 12:33:12
7	Norbert Voelker	0.73 s	Go	2021-11-15 20:59:39
8	Krzysztof Gibuła	0.75 s	Go	2021-02-23 16:32:06
9	Iker Lissarrague	0.97 s	Go	2022-04-19 07:06:44

#	User	Runtime	Language	Date
1	Tim Put	0.14 s	Haskell	2020-10-16 23:56:32
2	Jan Hrček	0.41 s	Haskell	2021-04-02 09:27:40
3	Roger Ballard	0.65 s	Haskell	2018-05-24 08:04:36
4	Steinar Simonnes	0.88 s	Haskell	2023-12-06 16:00:28

#	User	Runtime	Language	Date
1	Joakim Sunde	0.12 s	Java	2018-10-18 17:44:00
2	Sven Rönnbäck	0.16 s	Java	2023-06-23 13:50:53
3	Crystal Sharpe	0.19 s	Java	2022-02-03 01:00:42
4	John Isak Fjellvang Villanger	0.22 s	Java	2018-10-09 22:39:49
5	Bjørn Dons	0.22 s	Java	2018-10-21 20:17:05
6	jun009	0.22 s	Java	2018-10-30 12:34:17
7	Charlie Zheng	0.23 s	Java	2018-10-04 23:16:49
8	Øyvind Johannessen	0.23 s	Java	2018-11-04 14:04:34
9	Jakob Kallestad	0.24 s	Java	2018-10-14 00:43:11
10	Gustav Valentin Yde	0.25 s	Java	2018-03-16 16:02:18

#	User	Runtime	Language	Date
1	Christopher Walther	0.66 s	JavaScript (Node.js)	2021-04-16 18:01:26
2	Itay Maman	0.79 s	JavaScript (Node.js)	2021-11-14 18:32:55
3	tanvir.anjum. developer	0.86 s	JavaScript (Node.js)	2024-07-15 20:27:23
4	Peter Kedemo	0.95 s	JavaScript (Node.js)	2020-01-03 09:06:59

#	User	Runtime	Language	Date
1	Zach Tschetter	0.23 s	JavaScript (SpiderMonkey)	2024-10-30 19:27:19
2	Kristina Risvær	0.40 s	JavaScript (SpiderMonkey)	2017-02-11 17:11:38
3	Jimmy Gustafsson	0.50 s	JavaScript (SpiderMonkey)	2025-07-15 15:17:17
4	Magnar Myrtveit	0.51 s	JavaScript (SpiderMonkey)	2016-12-25 20:42:41
5	Bjørn Chr. Soltvedt	0.66 s	JavaScript (SpiderMonkey)	2020-10-05 23:21:08
6	Christian Pilegaard Cederquist	0.77 s	JavaScript (SpiderMonkey)	2023-03-10 20:58:48

#	User	Runtime	Language	Date
1	Hidden user	0.84 s	Julia	2025-03-10 08:41:59

#	User	Runtime	Language	Date
1	Björn Holm	0.51 s	Kotlin	2019-04-29 13:50:16
2	Chris Johnson	0.69 s	Kotlin	2023-09-20 14:24:45
3	Andreas Wassum	0.75 s	Kotlin	2019-07-18 00:09:01
4	Dmitry Shostak	0.77 s	Kotlin	2020-07-16 19:28:46
5	Ashish Singh	0.77 s	Kotlin	2023-01-18 14:32:24
6	Sam Keyser	0.79 s	Kotlin	2022-10-08 06:52:01
7	Jiangyue Li	0.83 s	Kotlin	2024-02-02 01:22:09
8	Min-Zheng Shieh	0.85 s	Kotlin	2021-03-19 06:59:01
9	Allen Guan	0.87 s	Kotlin	2022-03-25 07:38:22
10	Hidden user	0.94 s	Kotlin	2019-12-08 15:12:10

#	User	Runtime	Language	Date
1	Peter Hairatidis	0.40 s	Lua	2025-09-16 23:17:20
2	Caleb Austin	0.54 s	Lua	2024-10-18 22:16:01

#	User	Runtime	Language	Date
1	Hidden user	0.41 s	OCaml	2022-10-28 08:30:44

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.09 s	Pascal	2017-08-08 20:57:38
2	Ștefan-Iulian Alecu	0.19 s	Pascal	2025-10-26 18:09:52

#	User	Runtime	Language	Date
1	Sigurður Jens Albertsson	0.13 s	Python 2	2017-11-12 02:09:40
2	Alan Ispani	0.19 s	Python 2	2020-01-30 07:10:46
3	Sergey Pashkovsky	0.22 s	Python 2	2017-11-24 18:46:27
4	Riko Jacob	0.22 s	Python 2	2019-04-05 17:37:16
5	Hidden user	0.22 s	Python 2	2021-12-25 18:09:02
6	Andreas Björklund	0.23 s	Python 2	2019-05-07 19:34:44
7	Hidden user	0.24 s	Python 2	2017-06-23 18:35:19
8	Fan Jiang	0.24 s	Python 2	2018-09-28 00:19:38
9	Hermon Mulat	0.24 s	Python 2	2018-09-30 08:45:17
10	Sergii Bondariev	0.24 s	Python 2	2019-06-19 20:01:55

#	User	Runtime	Language	Date
1	Tilek Kamalov	0.17 s	Python 3	2025-12-19 07:17:21
2	Petr	0.18 s	Python 3	2025-01-01 15:33:22
3	Sumanyu Arya	0.18 s	Python 3	2025-03-27 02:18:09
4	John Djorup	0.19 s	Python 3	2025-05-13 14:53:17
5	Yang Haohong	0.20 s	Python 3	2023-11-08 15:25:47
6	Steven Koniaev	0.20 s	Python 3	2024-10-30 20:25:41
7	HUANG YUCHEN	0.20 s	Python 3	2025-01-29 20:24:07
8	Dante Kirsman	0.20 s	Python 3	2025-03-27 01:39:19
9	Jaden	0.20 s	Python 3	2025-03-31 03:15:05
10	1368_MyoPa Pakyaw	0.20 s	Python 3	2026-02-28 09:25:03

#	User	Runtime	Language	Date
1	Hidden user	0.38 s	Ruby	2019-11-14 22:49:55
2	Macdara mac an tSionnaigh	0.42 s	Ruby	2019-10-10 00:23:39
3	Hidden user	0.47 s	Ruby	2020-11-17 22:00:55
4	Joshua Coward	0.48 s	Ruby	2020-08-21 09:46:53
5	Evan Dreher	0.58 s	Ruby	2024-02-07 21:16:14
6	Daniel Harder	0.59 s	Ruby	2018-09-01 05:24:30
7	Hidden user	0.66 s	Ruby	2023-12-06 22:54:35
8	Yusuke Ichiki	0.75 s	Ruby	2022-05-20 06:45:10

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.01 s	Rust	2026-01-27 17:44:43
2	Iwancof	0.04 s	Rust	2023-05-23 05:43:09
3	Egor Kulikov	0.04 s	Rust	2024-10-11 11:46:15
4	Ryosuke Takahashi	0.06 s	Rust	2023-05-17 19:02:59
5	Marcus Östling	0.07 s	Rust	2024-03-05 19:21:32
6	Nelson Arthur Valdar Janusson	0.08 s	Rust	2026-02-14 04:21:20
7	Lucas Axberg	0.09 s	Rust	2026-02-11 21:49:05
8	Aaron Lengyel	0.10 s	Rust	2021-11-22 02:50:27
9	Mikkel	0.15 s	Rust	2023-09-23 02:24:09
10	Mason Ginter	0.16 s	Rust	2023-03-17 23:22:20

#	User	Runtime	Language	Date
1	Zane Endres	0.46 s	Swift	2023-12-07 19:31:19

#	User	Runtime	Language	Date
1	Zach Tschetter	0.71 s	TypeScript	2024-04-10 16:40:00

#	User	Runtime	Language	Date
1	Joe Blower	0.06 s	Zig	2025-05-24 18:08:45

#	User	Length	Language	Date
1	Erik Magnusson	198	C	2024-02-15 13:38:43
2	Simon Renhult	198	C	2024-02-16 14:02:48
3	Boris Adjahou	459	C	2017-04-08 18:39:03
4	Elvis Akadjame	515	C	2017-04-08 18:41:12
5	Anatole HAGBE	569	C	2017-04-08 18:42:21
6	Yasmine Allangba	599	C	2017-04-08 18:45:11
7	Zachariah Goldthorpe	604	C	2017-08-13 05:53:29
8	Modeste TIKO	695	C	2017-04-08 18:41:04
9	Eric Dand	696	C	2017-06-08 04:37:17
10	Feliho S. J. Kèfil	698	C	2017-03-11 11:12:59

#	User	Length	Language	Date
1	Esty Crow	1092	C#	2023-07-01 06:12:50
2	Anthony Ye	1130	C#	2023-07-02 18:31:17
3	Samuel Christensen	1329	C#	2023-12-03 02:58:30
4	Hidden user	1334	C#	2023-12-07 02:20:35
5	Alex Laurila	1371	C#	2023-05-19 15:02:49
6	Marek Bina	1405	C#	2019-02-21 09:01:44
7	Noah Schmitz	1408	C#	2023-12-07 02:28:53
8	Fredrik Widén	1525	C#	2023-11-23 11:23:56
9	Pedro Enrico Barchi Nogueira	1557	C#	2025-08-05 19:21:05
10	João Vitor Averaldo	1591	C#	2025-07-12 19:58:16

#	User	Length	Language	Date
1	Guk Yi Siong	345	C++	2023-01-01 12:59:13
2	蔡芳慈	430	C++	2023-03-31 05:14:02
3	William Gan	460	C++	2017-08-15 07:21:13
4	Chuck Fernández	461	C++	2016-09-24 00:58:01
5	Yeung Man Tsung	464	C++	2022-11-25 08:42:06
6	maze mela	468	C++	2022-03-23 13:13:28
7	son le thanh	476	C++	2020-11-18 01:48:09
8	Rainier HARDJANTO	488	C++	2020-12-12 10:20:13
9	Nguyen Thanh	492	C++	2018-07-08 03:41:14
10	Lim An Jun	499	C++	2023-01-18 12:15:44

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1263	F#	2023-03-29 17:13:18

#	User	Length	Language	Date
1	Jonas Mittnacht	768	Go	2024-02-18 16:56:47
2	Krzysztof Gibuła	941	Go	2021-02-23 16:32:06
3	Iker Lissarrague	1164	Go	2022-04-19 07:06:44
4	Scott Dauer	1499	Go	2020-09-20 20:42:30
5	Maksar Shipkhineev	1860	Go	2025-06-05 08:53:48
6	Norbert Voelker	1892	Go	2021-11-15 20:59:39
7	James Robb	2152	Go	2020-04-30 12:45:17
8	James Robb	2152	Go	2020-05-12 12:33:12
9	Péter Szakszon	3132	Go	2021-12-19 12:24:53

#	User	Length	Language	Date
1	Tim Put	1684	Haskell	2020-10-16 23:17:58
2	Steinar Simonnes	1864	Haskell	2023-12-06 16:00:28
3	Roger Ballard	2420	Haskell	2018-05-24 08:04:36
4	Jan Hrček	3176	Haskell	2021-04-02 09:27:40

#	User	Length	Language	Date
1	Crystal Sharpe	938	Java	2022-02-03 01:04:21
2	Jeremy Lim	1084	Java	2024-03-21 19:35:46
3	Doug Goodman	1091	Java	2018-06-14 22:52:46
4	Duncan Page	1098	Java	2019-08-27 00:50:21
5	Kaung Htet Wai Yan	1116	Java	2023-07-14 08:15:32
6	Garrison Hatcher	1144	Java	2019-10-23 21:26:41
7	Joey Drake	1155	Java	2019-10-22 23:10:11
8	Elizabeth Zou	1186	Java	2017-06-13 17:49:47
9	Moshiur Rahman	1188	Java	2021-06-16 17:00:18
10	Raj Rawat	1192	Java	2023-11-14 02:35:22

#	User	Length	Language	Date
1	Peter Kedemo	1085	JavaScript (Node.js)	2020-01-03 09:06:59
2	Itay Maman	1581	JavaScript (Node.js)	2021-11-14 18:18:16
3	tanvir.anjum. developer	1614	JavaScript (Node.js)	2024-07-15 20:28:24
4	Christopher Walther	2956	JavaScript (Node.js)	2021-04-16 18:01:26

#	User	Length	Language	Date
1	Jimmy Gustafsson	345	JavaScript (SpiderMonkey)	2025-07-15 15:17:17
2	Zach Tschetter	672	JavaScript (SpiderMonkey)	2024-10-28 15:44:00
3	Magnar Myrtveit	703	JavaScript (SpiderMonkey)	2016-12-25 20:42:41
4	Christian Pilegaard Cederquist	778	JavaScript (SpiderMonkey)	2023-03-10 20:58:48
5	Kristina Risvær	1674	JavaScript (SpiderMonkey)	2017-02-11 17:11:38
6	Bjørn Chr. Soltvedt	19340	JavaScript (SpiderMonkey)	2020-10-05 23:21:08

#	User	Length	Language	Date
1	Hidden user	271	Julia	2025-03-10 08:54:09

#	User	Length	Language	Date
1	Jesper Bech Christensen	572	Kotlin	2023-09-12 17:33:50
2	Min-Zheng Shieh	829	Kotlin	2021-03-19 06:53:43
3	Adam Rankin	954	Kotlin	2023-09-09 06:55:54
4	Phường Lên	961	Kotlin	2019-12-09 04:56:15
5	Ashish Singh	986	Kotlin	2023-01-18 14:32:24
6	Dmitry Shostak	1036	Kotlin	2020-07-17 07:49:41
7	Allen Guan	1091	Kotlin	2022-03-25 07:38:22
8	Hidden user	1107	Kotlin	2019-12-08 15:12:10
9	Chris Johnson	1124	Kotlin	2023-09-20 14:24:45
10	Sam Keyser	1317	Kotlin	2022-10-07 03:01:21

#	User	Length	Language	Date
1	Peter Hairatidis	1107	Lua	2025-09-16 23:17:20
2	Caleb Austin	1144	Lua	2024-10-18 22:16:01

#	User	Length	Language	Date
1	Hidden user	1900	OCaml	2022-10-28 10:48:49

#	User	Length	Language	Date
1	Ștefan-Iulian Alecu	1238	Pascal	2025-10-26 18:09:52
2	Ingemar Ragnemalm	2112	Pascal	2017-08-08 20:57:38

#	User	Length	Language	Date
1	Thomas Feld	302	Python 2	2019-08-21 14:40:57
2	Fan Jiang	420	Python 2	2018-09-28 00:19:38
3	Guan Yang Ze	454	Python 2	2019-10-17 17:46:39
4	Andreas Björklund	461	Python 2	2019-05-07 19:34:44
5	Hansel Qiu	499	Python 2	2018-10-12 07:11:27
6	Asger Hautop Drewsen	508	Python 2	2018-11-20 02:01:32
7	Johann Ly	533	Python 2	2018-09-02 22:51:10
8	Brandon Sovran	544	Python 2	2022-02-10 01:47:05
9	Maj Stenmark	546	Python 2	2018-03-31 21:17:57
10	Hidden user	547	Python 2	2019-02-11 02:57:41

#	User	Length	Language	Date
1	Michael Goldwasser	293	Python 3	2023-10-20 04:50:26
2	Nicolas Testu	297	Python 3	2023-07-23 15:48:07
3	Kelly Dance	301	Python 3	2022-10-21 05:10:59
4	Farzam Abrishami	305	Python 3	2024-02-03 00:37:22
5	Noah Hessen Bjerke	348	Python 3	2025-11-04 17:12:49
6	Ahmed Chamseddine	350	Python 3	2023-10-13 12:25:32
7	Yang Haohong	351	Python 3	2023-11-08 15:21:12
8	Lim Yong Sheng	366	Python 3	2023-11-22 10:56:16
9	aya	400	Python 3	2025-12-13 10:30:29
10	Nailia Mirbekova	416	Python 3	2025-12-19 19:32:39

#	User	Length	Language	Date
1	Hidden user	401	Ruby	2020-11-17 22:00:55
2	Daniel Harder	435	Ruby	2018-09-01 05:24:30
3	Hidden user	450	Ruby	2019-10-10 22:31:39
4	Joshua Coward	593	Ruby	2020-08-21 09:46:53
5	Evan Dreher	663	Ruby	2024-02-07 21:16:14
6	Macdara mac an tSionnaigh	865	Ruby	2019-10-10 00:23:39
7	Hidden user	1029	Ruby	2023-12-06 22:54:35
8	Yusuke Ichiki	1198	Ruby	2022-05-20 06:45:10

#	User	Length	Language	Date
1	David Rasch	1035	Rust	2020-09-07 09:54:50
2	Artur Khuziakhmetov	1194	Rust	2022-07-14 09:34:36
3	Amar Topalovic	1292	Rust	2023-07-09 11:51:36
4	Morten Lohne	1310	Rust	2018-11-04 23:56:42
5	Carl Forsinge	1351	Rust	2025-09-07 14:18:55
6	Gorm Casper	1369	Rust	2020-01-27 22:31:49
7	Martin Simensen	1375	Rust	2019-05-12 21:00:24
8	藤原潮人	1393	Rust	2023-05-23 15:07:05
9	Mathias Svensson	1402	Rust	2020-04-08 12:30:31
10	Hugo Lom	1402	Rust	2024-02-13 22:52:06

#	User	Length	Language	Date
1	Zane Endres	1484	Swift	2023-12-07 19:31:19

#	User	Length	Language	Date
1	Zach Tschetter	936	TypeScript	2024-04-10 16:40:00

#	User	Length	Language	Date
1	Joe Blower	3505	Zig	2025-05-24 18:08:45

Solution running time distribution