Problem A
Pivot — Problem Statistics

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Submissions	13873
Accepted submissions	5261
Submission ratio	37.92%
Authors	4619
Accepted authors	3972
Author ratio	85.99%

#	User	Runtime	Language	Date
1	Blake Lasky	0.00 s	C	2016-11-29 18:11:58
2	Bergur Snorrason	0.00 s	C	2019-03-26 15:24:32
3	Chenghao Lu	0.01 s	C	2015-09-12 07:42:35
4	Samuel Lusandi	0.01 s	C	2015-09-12 08:57:35
5	Mark Froilan Tandoc	0.01 s	C	2015-09-12 09:48:13
6	Huynh Thanh Thao	0.01 s	C	2015-09-12 10:10:23
7	Revian Adhi Pradana	0.01 s	C	2015-09-12 10:42:15
8	Hidden user	0.01 s	C	2015-09-13 04:07:03
9	Adam Evans	0.01 s	C	2015-09-26 21:19:16
10	貓貓吃狗狗	0.01 s	C	2015-10-06 07:44:50

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.03 s	C#	2022-12-22 17:39:00
2	Adrian Stanciu	0.04 s	C#	2018-12-28 13:38:38
3	Joe Amenta	0.05 s	C#	2016-04-04 23:31:47
4	Raul Kooter	0.05 s	C#	2016-12-05 00:00:04
5	Thomas Norris	0.05 s	C#	2019-06-26 06:04:07
6	Henrik Hallbert	0.05 s	C#	2019-09-11 21:30:55
7	Casper Rødgaard	0.05 s	C#	2019-11-01 14:22:00
8	Faisal Rahman	0.06 s	C#	2017-11-07 04:04:31
9	Oliver Zhu	0.06 s	C#	2017-11-14 19:25:50
10	samvid mistry	0.06 s	C#	2024-12-12 21:05:32

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.19 s	F#	2023-01-30 09:06:25

#	User	Runtime	Language	Date
1	Daniel Agatan	0.04 s	Go	2025-03-04 15:53:28
2	Albert Leung	0.05 s	Go	2024-08-15 04:30:29
3	Krzysztof Gibuła	0.09 s	Go	2019-01-20 15:05:53
4	Gede Wahyu Adi Pramana	0.09 s	Go	2020-10-10 08:16:18
5	Norbert Voelker	0.09 s	Go	2021-10-22 23:29:25
6	Hidden user	0.73 s	Go	2024-10-02 10:53:39

#	User	Runtime	Language	Date
1	Morten Lohne	0.03 s	Haskell	2018-01-30 23:00:35
2	Birk Tjelmeland	0.05 s	Haskell	2018-01-31 00:04:30
3	Dries Harnie	0.06 s	Haskell	2019-02-07 07:22:53
4	Steinar Simonnes	0.06 s	Haskell	2024-04-29 18:48:18
5	Zach Tschetter	0.13 s	Haskell	2021-07-27 05:12:13
6	Antony Lee	0.18 s	Haskell	2018-08-20 10:46:54
7	Ole Magnus Lie	0.19 s	Haskell	2018-02-05 13:10:38
8	Qi Ji	0.19 s	Haskell	2018-07-11 06:43:49
9	Lars Tveito	0.23 s	Haskell	2016-03-30 20:17:55
10	Olle Eriksson	0.23 s	Haskell	2018-03-10 22:55:53

#	User	Runtime	Language	Date
1	Choo Jun Inn Darren	0.06 s	Java	2024-11-21 06:29:57
2	Tú Huỳnh	0.07 s	Java	2015-09-12 07:25:08
3	Michel Langeveld	0.07 s	Java	2016-12-17 23:18:25
4	Jiang Qin Hua	0.07 s	Java	2018-07-10 08:49:18
5	Tan Jun An	0.08 s	Java	2016-04-19 15:24:54
6	Samuel Klingström	0.08 s	Java	2020-08-11 12:46:14
7	Bhavey Jain	0.08 s	Java	2021-08-29 03:52:29
8	Derek Thomson	0.08 s	Java	2022-01-19 21:43:27
9	Benjamin Meshanko	0.08 s	Java	2022-03-02 17:08:58
10	Mehrzad Gandhi	0.08 s	Java	2022-03-04 04:30:28

#	User	Runtime	Language	Date
1	Nicklas Østerberg	0.08 s	JavaScript (Node.js)	2025-03-28 15:02:30
2	Kenneth Chen	0.13 s	JavaScript (Node.js)	2022-07-09 12:32:59
3	Jeremiah Ang	0.47 s	JavaScript (Node.js)	2020-09-11 11:40:30
4	Stephanie Keck	0.68 s	JavaScript (Node.js)	2020-01-20 01:24:48

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2016-01-20 14:10:40
2	Gabriel Valfridsson	0.03 s	JavaScript (SpiderMonkey)	2018-04-12 20:52:38
3	Christian Cederquist	0.05 s	JavaScript (SpiderMonkey)	2023-03-08 08:04:34

#	User	Runtime	Language	Date
1	Timothy Gaede	0.55 s	Julia	2024-06-20 05:14:59
2	Noszály Csaba	0.58 s	Julia	2025-02-24 00:43:25

#	User	Runtime	Language	Date
1	Ravisai Tiruvuri	0.20 s	Kotlin	2024-04-29 07:45:19
2	Johnny Baloney	0.31 s	Kotlin	2021-12-26 22:06:05
3	Hidden user	0.33 s	Kotlin	2018-02-07 16:40:28
4	Adam Rankin	0.38 s	Kotlin	2023-05-07 03:53:30
5	Adam Koprowski	0.43 s	Kotlin	2020-08-18 14:44:55
6	Luca Mueller	0.45 s	Kotlin	2024-11-15 22:13:45
7	Dmitry Shostak	0.49 s	Kotlin	2019-09-13 17:36:42
8	Benjamin Ye	0.57 s	Kotlin	2023-01-25 05:39:56
9	Dayan Ruben Gonzalez	0.58 s	Kotlin	2020-09-30 02:28:54
10	Chris Johnson	0.83 s	Kotlin	2024-09-13 23:08:13

#	User	Runtime	Language	Date
1	Caleb Austin	0.04 s	Lua	2024-09-01 01:27:43

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	OCaml	2024-01-11 05:21:04

#	User	Runtime	Language	Date
1	Sơn Nguyễn	0.01 s	Pascal	2019-10-20 18:34:20

#	User	Runtime	Language	Date
1	Johan Nilsson	0.04 s	Python 2	2015-10-04 15:56:46
2	Neal Zane	0.04 s	Python 2	2015-12-13 05:28:23
3	Karoliina Oksanen	0.04 s	Python 2	2016-03-13 04:21:09
4	Peter Sofronas	0.04 s	Python 2	2017-08-06 02:37:08
5	Tal Melamed	0.04 s	Python 2	2017-12-08 05:18:04
6	Øyvind Haarberg	0.04 s	Python 2	2018-01-19 11:15:26
7	Jonas Mossin Wagle	0.04 s	Python 2	2018-02-06 18:44:06
8	Cian Ruane	0.04 s	Python 2	2018-04-11 16:17:17
9	Eddy Gao	0.04 s	Python 2	2018-04-12 08:39:48
10	Noah Ó Donnaile	0.04 s	Python 2	2018-04-18 12:15:58

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Python 3	2018-08-03 01:20:35
2	Shawn Tice	0.05 s	Python 3	2018-12-15 19:39:27
3	Cian Ruane	0.06 s	Python 3	2018-04-06 12:45:40
4	Noah Ó Donnaile	0.06 s	Python 3	2018-04-11 16:03:34
5	Hidden user	0.06 s	Python 3	2018-04-12 03:56:12
6	Kyle Lorenzano	0.06 s	Python 3	2018-04-12 09:22:28
7	Gabriel Valfridsson	0.06 s	Python 3	2018-04-12 21:18:30
8	Bjarki Ágúst Guðmundsson	0.06 s	Python 3	2018-04-16 20:50:02
9	Fahrudin Halilović	0.06 s	Python 3	2018-04-17 09:00:37
10	Kieran Horgan	0.06 s	Python 3	2018-08-17 02:20:57

#	User	Runtime	Language	Date
1	Zohar Malamant	0.09 s	Ruby	2018-02-02 14:21:57
2	Hidden user	0.09 s	Ruby	2019-03-19 16:08:37
3	Ivy Wang	0.12 s	Ruby	2023-01-27 05:45:50
4	Thomas Feld	0.12 s	Ruby	2023-02-28 10:02:02

#	User	Runtime	Language	Date
1	Akemi Izuko	0.00 s	Rust	2022-07-07 06:20:46
2	Vincent Lagerros	0.00 s	Rust	2025-01-26 15:19:09
3	Shivam Thakur	0.01 s	Rust	2019-07-01 18:35:59
4	Mathias Svensson	0.01 s	Rust	2019-10-24 09:41:36
5	Pahlevi Fikri Auliya	0.01 s	Rust	2020-10-23 05:12:52
6	Jianghua Wang	0.01 s	Rust	2023-01-26 00:18:18
7	Adam Guangwei Yu	0.01 s	Rust	2023-01-31 21:05:47
8	Ryan Chau	0.01 s	Rust	2023-02-01 23:06:48
9	Reis Faar	0.01 s	Rust	2023-04-10 23:12:12
10	David Rasch	0.01 s	Rust	2023-08-25 15:05:33

#	User	Length	Language	Date
1	Julian Brost	424	C	2018-04-15 19:49:42
2	Zachariah Goldthorpe	451	C	2017-08-12 05:44:09
3	Scott Dauer	474	C	2019-10-21 01:43:15
4	Chenghao Lu	475	C	2015-09-12 07:42:35
5	Tjandra Satria Gunawan	498	C	2015-09-12 09:23:30
6	Nicholas Bachmann Tjørnelund	545	C	2018-02-25 11:56:50
7	Gabriel Stanculescu	574	C	2021-09-19 22:51:34
8	Emil Bengtsson	575	C	2018-04-06 20:35:46
9	Andy Li	579	C	2020-08-28 23:43:02
10	Svein Høgemo	586	C	2018-02-23 23:15:44

#	User	Length	Language	Date
1	Esty Crow	712	C#	2025-07-11 13:30:50
2	Nathan Andrews	764	C#	2024-08-30 02:49:03
3	Yevgeniy Sheyer	793	C#	2025-02-14 03:32:23
4	Anthony Ye	811	C#	2025-07-18 20:27:42
5	Peter Bohunský	877	C#	2017-11-15 20:20:55
6	Faisal Rahman	894	C#	2017-11-07 04:04:31
7	Jayant Notani	1037	C#	2020-01-26 05:50:01
8	Adrian Stanciu	1066	C#	2018-12-28 13:38:38
9	Raul Kooter	1073	C#	2016-12-05 00:00:04
10	Casper Rødgaard	1348	C#	2019-11-01 14:22:00

#	User	Length	Language	Date
1	Kieran Horgan	215	C++	2017-08-28 21:42:39
2	陳衍行	252	C++	2023-12-29 03:51:26
3	Hoang Dai Thien Long	267	C++	2015-09-12 08:03:22
4	楊秉宇	283	C++	2021-01-29 06:55:57
5	Hidden user	289	C++	2019-01-27 05:37:50
6	Fredrik Ekholm	296	C++	2018-09-30 17:44:16
7	Giovanna Kobus Conrado	297	C++	2019-01-22 01:57:11
8	Tan Teong Seng	305	C++	2021-01-09 10:15:05
9	Nix Eyre	307	C++	2023-06-26 13:00:14
10	Daner Mendoza	309	C++	2018-12-18 00:44:58

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	996	F#	2023-01-30 09:06:25

#	User	Length	Language	Date
1	Gede Wahyu Adi Pramana	809	Go	2020-10-10 08:16:18
2	Hidden user	837	Go	2024-10-02 10:53:39
3	Krzysztof Gibuła	949	Go	2019-01-20 15:05:53
4	Norbert Voelker	997	Go	2021-10-22 23:29:25
5	Daniel Agatan	1032	Go	2025-03-04 15:53:28
6	Albert Leung	1637	Go	2021-06-23 03:43:56

#	User	Length	Language	Date
1	Birk Tjelmeland	202	Haskell	2018-01-31 00:02:07
2	Lars Tveito	228	Haskell	2016-03-30 20:17:55
3	Ole Magnus Lie	481	Haskell	2018-02-05 13:16:31
4	Antony Lee	494	Haskell	2018-08-20 10:46:54
5	Mikail Khan	574	Haskell	2022-03-09 03:35:11
6	Steinar Simonnes	584	Haskell	2024-04-29 18:48:18
7	Aurélien Pepin	628	Haskell	2019-09-19 16:33:31
8	Qi Ji	670	Haskell	2018-07-22 21:27:05
9	Dries Harnie	677	Haskell	2019-02-07 07:22:53
10	Olle Eriksson	709	Haskell	2018-03-10 23:00:06

#	User	Length	Language	Date
1	Taras Romanyuk	365	Java	2024-01-19 19:49:43
2	Zarhane Adil	385	Java	2016-08-01 00:45:07
3	Harrison Fang	497	Java	2015-09-26 19:51:33
4	Marshall D Feng	522	Java	2022-03-25 02:47:09
5	Reinald Kim Amplayo	524	Java	2015-09-13 17:39:58
6	Tom Bousso	548	Java	2017-12-06 22:59:39
7	Yeung Man Tsung	563	Java	2022-06-22 10:10:28
8	Ali Pervaiz	593	Java	2019-03-19 21:28:36
9	Doug Goodman	605	Java	2018-03-20 20:05:28
10	Benjamin Laurence Erickson	620	Java	2016-01-15 16:41:16

#	User	Length	Language	Date
1	Jeremiah Ang	442	JavaScript (Node.js)	2020-09-11 11:40:30
2	Nicklas Østerberg	762	JavaScript (Node.js)	2025-03-28 15:02:30
3	Kenneth Chen	1363	JavaScript (Node.js)	2022-07-09 12:32:59
4	Stephanie Keck	3222	JavaScript (Node.js)	2020-01-20 01:24:48

#	User	Length	Language	Date
1	Gabriel Valfridsson	367	JavaScript (SpiderMonkey)	2018-04-12 20:51:04
2	Bjørn Chr. Soltvedt	394	JavaScript (SpiderMonkey)	2016-01-20 14:10:40
3	Christian Cederquist	694	JavaScript (SpiderMonkey)	2023-03-08 08:04:34

#	User	Length	Language	Date
1	Noszály Csaba	411	Julia	2025-02-24 00:43:25
2	Timothy Gaede	825	Julia	2024-06-20 05:14:59

#	User	Length	Language	Date
1	Dmitry Shostak	326	Kotlin	2019-09-13 17:36:42
2	Adam Rankin	500	Kotlin	2023-05-07 03:53:30
3	Benjamin Ye	513	Kotlin	2023-01-25 05:39:56
4	Adam Koprowski	612	Kotlin	2020-08-18 14:44:55
5	Dayan Ruben Gonzalez	627	Kotlin	2020-09-30 02:28:54
6	Luca Mueller	819	Kotlin	2024-11-15 22:13:45
7	Chris Johnson	975	Kotlin	2024-09-13 23:08:13
8	Johnny Baloney	981	Kotlin	2021-12-26 22:06:05
9	Hidden user	3211	Kotlin	2018-02-07 16:40:28
10	Ravisai Tiruvuri	5874	Kotlin	2024-04-29 07:45:19

#	User	Length	Language	Date
1	Caleb Austin	654	Lua	2024-09-01 01:27:43

#	User	Length	Language	Date
1	Hidden user	678	OCaml	2024-01-11 05:28:12

#	User	Length	Language	Date
1	Sơn Nguyễn	1004	Pascal	2019-10-20 18:34:20

#	User	Length	Language	Date
1	Thomas Feld	169	Python 2	2019-08-21 14:17:13
2	Olof Heurgren	170	Python 2	2016-03-27 20:40:26
3	Ragur Krishnan	216	Python 2	2019-09-22 22:34:41
4	Andreas Björklund	258	Python 2	2019-05-08 18:40:12
5	Jesper Öqvist	264	Python 2	2019-02-27 00:24:18
6	Victor Zheng	273	Python 2	2017-06-10 20:24:26
7	Nathan Villanueva	293	Python 2	2017-01-27 09:12:06
8	Neal Zane	299	Python 2	2015-12-13 05:28:23
9	Nishka Awasthi	299	Python 2	2022-10-14 01:16:40
10	Hidden user	306	Python 2	2018-12-07 17:04:52

#	User	Length	Language	Date
1	Clement Oh	114	Python 3	2023-07-22 09:09:06
2	Błażej Dariusz Roszkowski	142	Python 3	2022-11-30 17:33:13
3	Michael Goldwasser	161	Python 3	2024-08-29 06:22:10
4	Olof Heurgren	162	Python 3	2016-03-27 18:20:09
5	Hidden user	165	Python 3	2025-01-27 21:45:22
6	Nguyên Khôi Đỗ	167	Python 3	2025-01-26 18:39:52
7	Vinh Buu Tang	177	Python 3	2024-08-18 14:52:44
8	Ethan Luo	180	Python 3	2024-01-21 00:36:28
9	Ahmed Chamseddine	181	Python 3	2023-11-20 21:40:16
10	Aaron Santamaria Gutierrez	184	Python 3	2025-04-06 02:46:13

#	User	Length	Language	Date
1	Thomas Feld	106	Ruby	2023-02-28 10:38:42
2	Hidden user	322	Ruby	2019-03-19 16:08:37
3	Ivy Wang	325	Ruby	2023-01-27 07:20:42
4	Zohar Malamant	341	Ruby	2018-02-02 14:21:57

#	User	Length	Language	Date
1	David Aldenbro	358	Rust	2023-10-26 20:53:44
2	Mathias Svensson	702	Rust	2019-10-24 09:41:36
3	David Rasch	710	Rust	2023-08-25 15:05:33
4	Jianghua Wang	758	Rust	2023-01-26 00:18:18
5	Bas Dirks	776	Rust	2022-04-13 17:17:33
6	Hidden user	1065	Rust	2024-12-24 04:46:39
7	Mckinley Xie	1124	Rust	2025-01-20 04:04:12
8	Joe Blower	1255	Rust	2025-06-17 19:16:55
9	Akemi Izuko	1285	Rust	2022-07-07 06:20:46
10	Ryan Chau	1365	Rust	2023-02-01 23:06:48

Solution running time distribution