Problem I
Build Dependencies — Problem Statistics

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Submissions	13952
Accepted submissions	3883
Submission ratio	27.83%
Authors	2923
Full solves [?]	2376
Full solve Ratio	81.29%

#	User	Runtime	Language	Date
1	Hidden user	0.08 s	C	2017-07-17 04:35:22
2	Bernd Schmidt	0.12 s	C	2017-05-13 07:32:50
3	Hidden user	0.24 s	C	2022-11-28 23:45:06
4	YD	0.24 s	C	2024-10-14 11:47:03
5	Ioannis Br	0.42 s	C	2024-12-07 20:34:30
6	Sanjiv Dinakar	0.47 s	C	2023-06-07 08:11:21
7	Yannik Mahlau	3.18 s	C	2019-10-22 18:09:15

#	User	Runtime	Language	Date
1	Johan Gustafsson	0.44 s	C#	2024-06-21 07:51:41
2	Dick Appel	0.59 s	C#	2018-05-26 21:24:10
3	Peti29	0.67 s	C#	2017-05-15 23:22:36
4	Rafael Steffen Nguyen Jensen	0.86 s	C#	2025-03-12 19:37:06
5	Patrik Hammersborg	0.87 s	C#	2018-01-31 10:13:17
6	Nathan Andrews	1.00 s	C#	2024-10-25 23:52:11
7	Denis Traunter	1.06 s	C#	2024-02-18 13:38:34
8	Viktor Máni Mönster	1.09 s	C#	2020-05-18 15:13:26
9	Viktor Máni	1.12 s	C#	2020-05-14 17:37:06
10	Akshay Patel	1.12 s	C#	2020-11-09 02:42:27

#	User	Runtime	Language	Date
1	Hidden user	0.09 s	C++	2017-07-17 04:22:57
2	Maciej Goszczycki	0.15 s	C++	2017-10-17 03:10:19
3	Lin Lee	0.16 s	C++	2017-06-06 14:14:54
4	Agis Daniels	0.17 s	C++	2021-12-12 16:02:43
5	Nicolas Testu	0.17 s	C++	2023-07-29 13:43:17
6	Evan Michael Bailey	0.18 s	C++	2021-05-01 19:44:30
7	Alexander Kravberg	0.18 s	C++	2022-11-07 23:08:17
8	Geralt of Rivia	0.19 s	C++	2022-05-20 02:46:09
9	Othon Ishiyi	0.20 s	C++	2024-07-26 03:06:59
10	Thao-Ly Nguyen-Thanh	0.21 s	C++	2019-09-04 07:28:30

#	User	Runtime	Language	Date
1	Andreas Severin Hauch Trøstrup	0.55 s	Crystal	2024-12-05 19:14:59

#	User	Runtime	Language	Date
1	Norbert Voelker	0.42 s	Go	2023-04-15 17:02:04
2	Jonas Mittnacht	0.61 s	Go	2024-02-14 15:18:32
3	Ola Dahl	0.70 s	Go	2023-01-29 12:43:17
4	Zhu Junhui	0.85 s	Go	2022-11-27 13:33:21
5	Cao Shengze	0.90 s	Go	2022-11-27 06:10:52
6	Krzysztof Gibuła	1.15 s	Go	2021-05-09 19:07:40

#	User	Runtime	Language	Date
1	Øyvind Almli	2.90 s	Haskell	2023-07-10 19:00:20

#	User	Runtime	Language	Date
1	jun009	0.57 s	Java	2018-11-05 10:44:38
2	Asmus Tørsleff	0.76 s	Java	2022-03-01 13:30:14
3	Bjørn Dons	0.77 s	Java	2018-12-14 23:12:05
4	Herman Appelgren	0.81 s	Java	2018-04-06 01:46:41
5	Tore Aadland	0.82 s	Java	2018-11-02 13:26:26
6	Øystein H Nordberg	0.83 s	Java	2018-10-31 14:24:36
7	Max Holmberg	0.84 s	Java	2020-09-30 20:02:33
8	Martijn Muijsers	0.85 s	Java	2016-10-27 22:49:49
9	Espen Rong	0.85 s	Java	2018-11-07 14:52:41
10	Joakim Sunde	0.86 s	Java	2018-10-23 14:52:19

#	User	Runtime	Language	Date
1	Christopher Walther	0.71 s	JavaScript (SpiderMonkey)	2021-06-04 22:51:15
2	Christian Cederquist	1.34 s	JavaScript (SpiderMonkey)	2023-06-17 07:14:10

#	User	Runtime	Language	Date
1	Noszály Csaba	1.17 s	Julia	2025-03-12 18:24:26

#	User	Runtime	Language	Date
1	Phường Lên	1.12 s	Kotlin	2020-01-25 22:55:21
2	Adam Rankin	1.49 s	Kotlin	2023-09-23 02:00:54
3	Rasib Nadeem	1.70 s	Kotlin	2023-11-09 17:53:08
4	Min-Zheng Shieh	1.95 s	Kotlin	2021-06-11 09:38:28
5	Mohsen Dehbashi	2.27 s	Kotlin	2019-11-02 09:44:59
6	Navya Zaveri	2.35 s	Kotlin	2019-11-24 03:51:53
7	Hidden user	3.45 s	Kotlin	2019-11-29 00:47:39

#	User	Runtime	Language	Date
1	Caleb Austin	1.13 s	Lua	2024-10-25 23:58:50

#	User	Runtime	Language	Date
1	Hidden user	2.09 s	OCaml	2022-10-29 01:37:53

#	User	Runtime	Language	Date
1	Juliang Li	0.42 s	Python 2	2018-03-26 07:00:24
2	Tyler Durden	0.44 s	Python 2	2018-03-28 17:20:39
3	Lim Hong Hui Eugene	0.50 s	Python 2	2019-04-04 08:19:50
4	Hermon Mulat	0.53 s	Python 2	2019-05-13 16:40:13
5	许子豪	0.53 s	Python 2	2022-08-09 05:10:52
6	Sam H	0.54 s	Python 2	2020-02-21 04:56:38
7	kreativt namn jag vet	0.54 s	Python 2	2021-01-13 15:39:46
8	Saikumar Yadugiri	0.54 s	Python 2	2022-09-24 22:08:02
9	Anton Lyxell	0.56 s	Python 2	2019-11-16 16:21:04
10	John Paul Hanson	0.60 s	Python 2	2017-09-18 01:11:08

#	User	Runtime	Language	Date
1	Nikolaj Munk Binder Jensen	0.50 s	Python 3	2025-02-27 15:32:20
2	Adrian Borup	0.51 s	Python 3	2023-02-28 15:15:53
3	Victor Gram Mortensen	0.52 s	Python 3	2022-03-01 12:36:19
4	Hidden user	0.52 s	Python 3	2022-04-24 05:06:22
5	Andreas Guldborg Hansen	0.52 s	Python 3	2024-10-08 14:45:12
6	Maksim Segen	0.53 s	Python 3	2025-05-20 01:00:10
7	Boas Kluiving	0.54 s	Python 3	2018-11-16 18:47:12
8	Carrie Bergstedt	0.54 s	Python 3	2019-10-29 18:10:57
9	Eliška Radikovská	0.54 s	Python 3	2024-03-11 15:43:43
10	Thomas Charton-Jaeg	0.54 s	Python 3	2024-05-09 17:46:56

#	User	Runtime	Language	Date
1	Andreas Severin Hauch Trøstrup	0.97 s	Ruby	2023-02-28 20:04:34

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.05 s	Rust	2025-05-07 01:28:35
2	Joe Blower	0.16 s	Rust	2025-08-14 02:13:44
3	Adrian Borup	0.18 s	Rust	2023-03-01 21:25:12
4	Morten Lohne	0.21 s	Rust	2018-11-07 01:56:20
5	Harry Coleman	0.32 s	Rust	2022-05-04 04:39:58
6	Gustaf Bergmark	0.35 s	Rust	2023-02-22 15:34:27
7	Egor Kulikov	0.35 s	Rust	2024-11-19 10:25:51
8	Fiat Driver	0.38 s	Rust	2023-07-08 18:36:31
9	Albert Rise Nielsen	0.41 s	Rust	2023-02-28 16:46:15
10	Bas Dirks	0.43 s	Rust	2024-02-10 12:00:32

#	User	Runtime	Language	Date
1	Danial Haseeb	1.59 s	Swift	2023-12-07 09:58:44

#	User	Length	Language	Date
1	Hidden user	2847	C	2022-11-28 23:45:06
2	Yannik Mahlau	3401	C	2019-10-22 18:09:15
3	Hidden user	3536	C	2017-07-17 04:46:23
4	Bernd Schmidt	3656	C	2017-05-13 07:32:50
5	YD	4413	C	2024-10-14 11:47:03
6	Sanjiv Dinakar	6022	C	2023-06-07 08:11:21
7	Ioannis Br	6649	C	2024-12-07 20:42:53

#	User	Length	Language	Date
1	Nathan Andrews	1006	C#	2024-10-25 23:52:11
2	Johan Gustafsson	1058	C#	2024-06-21 07:22:22
3	Rafael Steffen Nguyen Jensen	1575	C#	2025-03-12 19:37:06
4	Denis Traunter	1601	C#	2024-02-18 13:37:23
5	Mike Garrett	2083	C#	2019-03-13 22:36:55
6	Akshay Patel	2256	C#	2020-11-09 02:42:27
7	Peti29	2526	C#	2017-05-18 00:28:33
8	Viktor Máni Mönster	2677	C#	2020-05-18 15:13:26
9	Viktor Máni	2679	C#	2020-05-14 17:37:06
10	Patrik Hammersborg	2855	C#	2018-01-31 10:00:17

#	User	Length	Language	Date
1	Alessandro Minisini	497	C++	2022-12-03 14:01:45
2	Ale Mini	497	C++	2022-12-03 14:08:46
3	Josenildo Silva	603	C++	2017-05-11 00:09:16
4	Hidden user	618	C++	2019-04-21 13:21:29
5	Rishab Pallepati	651	C++	2021-01-17 18:49:52
6	Karol Farbiś	675	C++	2016-05-22 10:47:49
7	Christian Yongwhan Lim	683	C++	2023-06-15 01:58:03
8	Minh Nguyen	688	C++	2019-01-30 08:07:33
9	Neo Neng Kai Nigel	694	C++	2019-04-02 06:54:45
10	Ismail Alrifai	696	C++	2021-07-08 12:33:43

#	User	Length	Language	Date
1	Andreas Severin Hauch Trøstrup	631	Crystal	2024-12-05 19:14:59

#	User	Length	Language	Date
1	Krzysztof Gibuła	987	Go	2021-05-09 19:07:40
2	Jonas Mittnacht	1042	Go	2024-02-14 15:18:32
3	Norbert Voelker	1372	Go	2023-04-15 17:11:38
4	Zhu Junhui	1558	Go	2022-11-27 13:33:21
5	Ola Dahl	2268	Go	2023-01-29 12:43:17
6	Cao Shengze	2408	Go	2022-11-27 06:10:52

#	User	Length	Language	Date
1	Øyvind Almli	704	Haskell	2023-07-10 19:47:04

#	User	Length	Language	Date
1	Hidden user	1028	Java	2023-03-15 00:19:53
2	Benjamin Laurence Erickson	1101	Java	2016-07-15 06:40:14
3	Kurtis Van Gent	1164	Java	2016-07-07 17:45:04
4	Mario Lorenzo	1187	Java	2019-10-10 18:46:41
5	Dhiraputta Pathama Tengara	1281	Java	2023-11-19 09:35:57
6	Taras Romanyuk	1281	Java	2024-06-04 23:50:30
7	April Chao	1283	Java	2022-04-29 06:56:38
8	Carter Hidalgo	1285	Java	2023-04-24 23:23:49
9	Siddharth Adusumelli	1326	Java	2023-03-09 02:26:47
10	Zach Tschetter	1336	Java	2022-02-03 20:18:04

#	User	Length	Language	Date
1	Christian Cederquist	1221	JavaScript (SpiderMonkey)	2023-06-17 07:14:10
2	Christopher Walther	2660	JavaScript (SpiderMonkey)	2021-06-04 22:51:15

#	User	Length	Language	Date
1	Noszály Csaba	710	Julia	2025-03-12 18:24:26

#	User	Length	Language	Date
1	Mohsen Dehbashi	657	Kotlin	2019-11-02 09:44:59
2	Adam Rankin	761	Kotlin	2023-09-23 02:00:54
3	Min-Zheng Shieh	914	Kotlin	2021-06-11 09:38:28
4	Hidden user	1229	Kotlin	2019-11-29 00:47:39
5	Phường Lên	1491	Kotlin	2020-01-25 22:55:21
6	Rasib Nadeem	1634	Kotlin	2023-11-09 17:54:35
7	Navya Zaveri	1823	Kotlin	2019-11-24 03:51:53

#	User	Length	Language	Date
1	Caleb Austin	1056	Lua	2024-10-25 23:58:50

#	User	Length	Language	Date
1	Hidden user	1632	OCaml	2022-10-29 01:04:02

#	User	Length	Language	Date
1	Thomas Feld	350	Python 2	2023-05-09 11:41:50
2	Lim Hong Hui Eugene	518	Python 2	2019-04-04 08:19:50
3	Steven Hwang	551	Python 2	2020-06-28 17:31:31
4	John Paul Hanson	715	Python 2	2017-09-18 01:11:08
5	Justin Su	753	Python 2	2019-09-14 09:44:48
6	Anton Lyxell	820	Python 2	2019-11-16 16:22:46
7	Yupeng Gu	831	Python 2	2018-04-18 19:23:52
8	Kevin Tang	862	Python 2	2019-04-18 23:45:33
9	Agis Daniels	942	Python 2	2021-12-12 16:39:47
10	Hermon Mulat	945	Python 2	2019-05-13 16:40:13

#	User	Length	Language	Date
1	Jaydan Aladro	290	Python 3	2023-11-29 23:31:02
2	Kelly Dance	373	Python 3	2022-09-27 19:53:15
3	Tistou	410	Python 3	2023-01-28 18:24:05
4	Niels Christian Skov Faber	414	Python 3	2024-03-05 08:26:06
5	Fang Jiaqi	419	Python 3	2022-11-19 05:23:44
6	Wong Tse Jian	420	Python 3	2022-11-19 05:23:22
7	Ziyan Zhang	422	Python 3	2022-11-19 05:22:15
8	Lukas Kerren	429	Python 3	2024-05-07 02:07:23
9	Hidden user	437	Python 3	2022-03-24 06:24:43
10	Hidden user	439	Python 3	2022-05-03 05:05:34

#	User	Length	Language	Date
1	Andreas Severin Hauch Trøstrup	575	Ruby	2023-02-28 19:48:06

#	User	Length	Language	Date
1	Adrian Borup	1513	Rust	2023-03-01 21:25:12
2	Bas Dirks	1797	Rust	2024-02-10 12:00:32
3	Andreas Just Petersen	1809	Rust	2023-03-06 13:07:31
4	Albert Rise Nielsen	1825	Rust	2023-02-28 16:46:15
5	Morten Lohne	1983	Rust	2018-11-06 01:00:25
6	Fiat Driver	2069	Rust	2023-07-08 18:36:31
7	Vincent Lagerros	2084	Rust	2024-05-15 21:30:21
8	Harry Coleman	2279	Rust	2022-05-04 02:50:32
9	Mckinley Xie	2568	Rust	2025-03-23 05:04:54
10	Joe Blower	2964	Rust	2025-08-14 02:13:44

#	User	Length	Language	Date
1	Danial Haseeb	1187	Swift	2023-12-07 09:58:44

Solution running time distribution