Problem A
Busy Schedule — Problem Statistics

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Submissions	4220
Accepted submissions	1826
Submission ratio	43.27%
Authors	1688
Full solves [?]	1504
Full solve Ratio	89.10%

#	User	Runtime	Language	Date
1	Khin Nyunt	0.02 s	C#	2016-04-18 07:42:10
2	Saša Levstik	0.02 s	C#	2016-11-28 21:03:52
3	Ron Harper	0.02 s	C#	2018-03-06 17:08:51
4	Brutus Hansson	0.02 s	C#	2019-01-28 18:58:43
5	Soujatya Sanyal	0.02 s	C#	2019-02-14 02:04:07
6	Apurv Parekh	0.02 s	C#	2019-02-20 22:06:18
7	Tim Smith	0.02 s	C#	2019-06-21 03:26:58
8	Mads Storm Hansen	0.03 s	C#	2015-07-23 12:21:25
9	Ugnius Skučas	0.03 s	C#	2016-10-16 22:16:22
10	Firas Al Omary	0.03 s	C#	2017-04-11 18:22:48

#	User	Runtime	Language	Date
1	David Cawthon	0.01 s	Common Lisp	2020-07-05 04:25:55

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2023-01-14 21:09:09

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2021-06-12 20:52:07
2	Ainun Nazieb	0.04 s	Go	2020-09-30 11:15:39

#	User	Runtime	Language	Date
1	Lars Tveito	0.00 s	Haskell	2015-07-22 19:40:52
2	Hidden user	0.01 s	Haskell	2015-02-09 12:25:03
3	Blake Hyde	0.01 s	Haskell	2016-06-11 03:23:48
4	Michael LoPiccolo	0.01 s	Haskell	2017-07-22 18:22:19
5	Brent Yorgey	0.01 s	Haskell	2017-11-23 05:41:55
6	Aurélien Pepin	0.01 s	Haskell	2019-09-15 15:53:55
7	Steven Fontanella	0.01 s	Haskell	2019-09-19 22:44:37
8	Abel Martin	0.01 s	Haskell	2019-09-22 20:30:11
9	Hidden user	0.01 s	Haskell	2019-11-06 10:17:05
10	Myint Myat Aung	0.01 s	Haskell	2020-07-29 08:16:09

#	User	Runtime	Language	Date
1	Pål Forsberg	0.06 s	Java	2015-09-30 14:20:10
2	Michael Sullivan	0.06 s	Java	2016-01-17 03:53:00
3	Sven Rönnbäck	0.06 s	Java	2022-04-18 08:13:28
4	Samuel Klingström	0.07 s	Java	2017-06-12 23:12:40
5	Manuel Rodriguez	0.07 s	Java	2018-02-27 03:34:17
6	Hidden user	0.07 s	Java	2025-03-11 03:20:49
7	Luu Nhat Phi	0.08 s	Java	2015-10-07 10:28:50
8	Simon Xue	0.08 s	Java	2016-03-08 19:57:37
9	Hidden user	0.08 s	Java	2016-04-07 09:26:27
10	Fu Jin	0.08 s	Java	2018-07-14 10:25:08

#	User	Runtime	Language	Date
1	Quinn Flavel	0.42 s	JavaScript (Node.js)	2020-09-22 16:21:18
2	Daniel Cabral	0.43 s	JavaScript (Node.js)	2020-04-08 15:03:49
3	Khin Nyunt	0.44 s	JavaScript (Node.js)	2021-09-19 15:06:45

#	User	Runtime	Language	Date
1	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-01-01 18:24:00
2	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-01-26 23:39:50
3	Michael Laszlo	0.01 s	JavaScript (SpiderMonkey)	2016-10-05 15:45:10
4	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-17 01:34:31
5	Frédéric Morel	0.02 s	JavaScript (SpiderMonkey)	2016-10-15 19:10:54
6	Tor Nordqvist	0.02 s	JavaScript (SpiderMonkey)	2016-10-26 20:36:59
7	Zachary DeStefano	0.03 s	JavaScript (SpiderMonkey)	2019-09-29 16:00:54
8	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-03-19 20:45:34
9	Quoc Anh Khoa Nguyen	0.03 s	JavaScript (SpiderMonkey)	2025-01-23 04:29:47
10	Jimmy Gustafsson	0.03 s	JavaScript (SpiderMonkey)	2025-07-22 07:53:56

#	User	Runtime	Language	Date
1	Timothy Gaede	0.65 s	Julia	2024-04-23 07:22:17

#	User	Runtime	Language	Date
1	Zaw Myat	0.26 s	Kotlin	2023-12-17 04:11:41
2	Bradley Richards	0.27 s	Kotlin	2023-03-08 08:36:32
3	Adam Rankin	0.30 s	Kotlin	2023-05-09 19:39:06

#	User	Runtime	Language	Date
1	Jonas Winje	0.01 s	Lua	2025-03-24 17:04:30

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.04 s	Prolog	2016-09-07 13:08:08

#	User	Runtime	Language	Date
1	Johannes Agestam	0.03 s	Python 2	2015-08-17 22:53:25
2	Urban Pettersson	0.03 s	Python 2	2015-10-29 20:08:54
3	Frederik Højholt	0.03 s	Python 2	2016-12-05 12:58:50
4	Maksym Bendeberia	0.03 s	Python 2	2017-06-26 08:45:59
5	Christofer Ohlsson	0.04 s	Python 2	2015-04-05 07:52:51
6	Brian Bauman	0.04 s	Python 2	2016-01-22 23:40:12
7	Gurinder Hans	0.04 s	Python 2	2016-09-09 03:46:35
8	Brian McCutchon	0.04 s	Python 2	2016-09-20 22:28:56
9	udprogrammingteam Team	0.04 s	Python 2	2016-09-20 22:46:59
10	Tomas Alvarez	0.04 s	Python 2	2018-02-22 21:43:15

#	User	Runtime	Language	Date
1	Saša Levstik	0.02 s	Python 3	2015-05-18 11:15:19
2	James Elías Sigurðarson	0.02 s	Python 3	2015-06-03 14:20:56
3	Baldur Tryggvason	0.02 s	Python 3	2015-08-07 23:25:53
4	Johannes Agestam	0.02 s	Python 3	2015-08-17 22:52:24
5	Ziga Staresinic	0.02 s	Python 3	2015-09-09 14:07:53
6	Wayne	0.02 s	Python 3	2016-02-15 20:08:31
7	Clint Nieuwendijk	0.02 s	Python 3	2016-03-29 14:20:04
8	Hidden user	0.02 s	Python 3	2016-08-17 12:37:35
9	Nguyen Hung Thai	0.02 s	Python 3	2016-10-01 04:37:10
10	Mohamed CHADAD	0.02 s	Python 3	2016-10-16 22:24:08

#	User	Runtime	Language	Date
1	Casper Christensen	0.04 s	Ruby	2016-01-24 14:28:26
2	Nucleo Extensão em Tecnologia da Informação	0.05 s	Ruby	2019-06-01 21:13:12
3	Davi Guimarães Leite	0.05 s	Ruby	2019-06-07 18:05:49
4	Isaac Bruce	0.06 s	Ruby	2023-01-30 04:54:00
5	Thomas Feld	0.06 s	Ruby	2023-08-17 14:02:39

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-02-08 09:11:49
2	David Rasch	0.00 s	Rust	2023-08-24 07:55:29
3	Vincent Lagerros	0.00 s	Rust	2025-01-25 03:07:39

#	User	Length	Language	Date
1	Mikael K Eriksson	979	C	2021-02-03 17:54:14
2	Andrew Roberts	1130	C	2017-09-14 22:45:13
3	Hidden user	1155	C	2017-11-25 11:24:57
4	Mirel Cosulschi	1159	C	2025-04-13 14:48:44
5	Seth Carter	1389	C	2018-11-01 18:41:39
6	Ata Kırcadağ	1395	C	2025-04-25 15:06:09
7	Naveen Kumar S	1412	C	2025-05-01 02:44:09
8	Jon Voigt Tøttrup	1474	C	2019-09-30 17:51:41
9	Viet Anh Ho	1511	C	2016-05-10 18:10:46
10	Tyler Mulholland	1697	C	2023-04-04 17:00:48

#	User	Length	Language	Date
1	Matthew Kennedy	402	C#	2025-04-04 20:32:40
2	Brian Scott	692	C#	2017-10-23 05:03:16
3	Göran Andersson	986	C#	2022-05-27 00:42:07
4	Ugnius Skučas	1080	C#	2016-10-16 22:16:22
5	Hidden user	1133	C#	2018-01-30 13:21:03
6	Yevgeniy Sheyer	1182	C#	2025-02-15 19:39:02
7	Firas Al Omary	1388	C#	2017-04-11 18:22:48
8	Klas af Geijerstam	1468	C#	2017-05-19 21:18:36
9	Umar Rasyid	1601	C#	2025-07-26 02:51:36
10	Henrik Syverinsen	1605	C#	2025-03-24 16:52:05

#	User	Length	Language	Date
1	Frans Meulenbroeks	329	C++	2025-02-13 14:24:19
2	Zarif	390	C++	2023-12-12 05:41:09
3	William Gan	476	C++	2017-03-01 12:37:20
4	David Wärn	484	C++	2015-08-25 18:29:56
5	Herman Karlsson	515	C++	2015-02-27 20:12:51
6	Titus Chew	564	C++	2025-02-07 15:55:35
7	Frederick Pek	603	C++	2021-07-06 17:21:26
8	Vu Thanh Hai	619	C++	2022-10-14 15:07:46
9	Scott MacIntosh	631	C++	2019-10-06 19:08:59
10	Brandon Zhang	648	C++	2023-11-09 08:53:51

#	User	Length	Language	Date
1	David Cawthon	694	Common Lisp	2020-07-05 04:25:55

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	865	F#	2023-01-14 21:09:09

#	User	Length	Language	Date
1	Ainun Nazieb	688	Go	2020-09-30 11:15:39
2	Norbert Voelker	1315	Go	2021-06-12 20:52:07

#	User	Length	Language	Date
1	Steinar Simonnes	363	Haskell	2023-11-04 13:28:10
2	Myint Myat Aung	743	Haskell	2020-07-29 08:16:09
3	Jan Hrček	766	Haskell	2021-04-13 03:47:06
4	Lars Tveito	933	Haskell	2015-07-22 19:40:52
5	Joshua Coward	952	Haskell	2022-02-17 04:09:46
6	Aurélien Pepin	1036	Haskell	2019-09-15 15:53:55
7	Hidden user	1119	Haskell	2022-12-26 02:39:08
8	Steven Fontanella	1120	Haskell	2019-09-19 22:44:37
9	Michael LoPiccolo	1307	Haskell	2017-07-22 18:22:19
10	Blake Hyde	1311	Haskell	2016-06-11 03:39:50

#	User	Length	Language	Date
1	Micah Stairs	891	Java	2016-07-10 02:31:24
2	Terrence Park	909	Java	2015-10-13 09:56:32
3	Yassine Ci	909	Java	2016-05-15 22:34:46
4	Brian Lee	925	Java	2018-11-20 16:29:00
5	Myat Pwint Phyu	936	Java	2016-05-12 09:44:39
6	Zachary Crowley-Kurth	948	Java	2017-12-01 22:20:21
7	Destiny S Mhishi	973	Java	2016-02-27 17:04:11
8	Zimu Qin	989	Java	2015-07-18 15:37:19
9	Greg Araujo	992	Java	2016-02-22 22:32:20
10	Duncan Page	992	Java	2017-11-30 21:56:59

#	User	Length	Language	Date
1	Quinn Flavel	561	JavaScript (Node.js)	2020-09-22 16:21:18
2	Khin Nyunt	1547	JavaScript (Node.js)	2021-09-19 15:06:45
3	Daniel Cabral	1687	JavaScript (Node.js)	2020-04-08 15:03:49

#	User	Length	Language	Date
1	Jimmy Gustafsson	239	JavaScript (SpiderMonkey)	2025-07-22 07:53:56
2	Zach Tschetter	439	JavaScript (SpiderMonkey)	2023-04-18 04:01:24
3	Christian Pilegaard Cederquist	448	JavaScript (SpiderMonkey)	2023-03-19 20:45:34
4	Tor Nordqvist	698	JavaScript (SpiderMonkey)	2016-10-26 20:36:59
5	Peter Kedemo	761	JavaScript (SpiderMonkey)	2016-01-01 18:24:00
6	J M	770	JavaScript (SpiderMonkey)	2016-10-17 01:34:31
7	Zachary DeStefano	809	JavaScript (SpiderMonkey)	2019-09-29 16:00:54
8	Frédéric Morel	810	JavaScript (SpiderMonkey)	2016-10-15 19:10:54
9	Bjørn Chr. Soltvedt	836	JavaScript (SpiderMonkey)	2016-01-26 23:39:50
10	Michael Laszlo	1044	JavaScript (SpiderMonkey)	2016-10-05 15:45:10

#	User	Length	Language	Date
1	Timothy Gaede	860	Julia	2024-04-23 07:22:17

#	User	Length	Language	Date
1	Bradley Richards	841	Kotlin	2023-03-08 08:36:32
2	Adam Rankin	1336	Kotlin	2023-05-09 19:39:06
3	Zaw Myat	3617	Kotlin	2023-12-17 04:11:41

#	User	Length	Language	Date
1	Jonas Winje	588	Lua	2025-03-24 17:04:30

#	User	Length	Language	Date
1	Andriy Zyevakov	2464	Prolog	2016-09-07 13:08:08

#	User	Length	Language	Date
1	Thomas Feld	234	Python 2	2019-09-06 09:08:52
2	Andreas Björklund	333	Python 2	2019-03-26 06:48:43
3	Lars Åström	365	Python 2	2019-05-14 19:21:43
4	Justin Su	378	Python 2	2019-10-02 03:27:44
5	Snild Dolkow	385	Python 2	2015-10-05 19:53:00
6	Hidden user	401	Python 2	2019-07-06 01:58:45
7	Neal Zane	419	Python 2	2016-08-01 02:10:32
8	Izzati Al Vandiar	428	Python 2	2015-11-02 15:02:41
9	Menno VanDiermen	432	Python 2	2017-09-20 03:03:27
10	Paulo Bu	504	Python 2	2015-04-07 13:12:54

#	User	Length	Language	Date
1	Yong Mao	201	Python 3	2023-08-01 16:05:51
2	Tai Tze Kin	218	Python 3	2024-05-03 15:43:30
3	Rafael Kristoforus Yanto	218	Python 3	2025-02-23 06:11:55
4	Asger Hautop Drewsen	239	Python 3	2017-05-30 22:34:14
5	Markus	246	Python 3	2020-09-11 19:22:36
6	Ahmed Chamseddine	247	Python 3	2023-11-21 14:41:58
7	Lim Dewen, Aloysius	252	Python 3	2021-05-03 15:49:31
8	Suus Brommer	256	Python 3	2024-04-22 08:48:41
9	Thomas Draper	259	Python 3	2023-09-22 02:00:13
10	Daniel Bogorad	262	Python 3	2025-09-27 18:15:06

#	User	Length	Language	Date
1	Thomas Feld	68	Ruby	2023-08-17 14:04:26
2	Casper Christensen	534	Ruby	2016-01-24 14:28:26
3	Isaac Bruce	681	Ruby	2023-01-30 04:54:00
4	Nucleo Extensão em Tecnologia da Informação	1535	Ruby	2019-06-01 21:13:12
5	Davi Guimarães Leite	1535	Ruby	2019-06-07 18:05:49

#	User	Length	Language	Date
1	Vincent Lagerros	832	Rust	2025-01-25 03:07:39
2	David Rasch	1066	Rust	2023-08-24 07:55:29
3	Bas Dirks	2016	Rust	2022-02-08 09:11:49

Solution running time distribution