Problem A
Collapse — Problem Statistics

Back to problem description

Submissions	1311
Accepted submissions	511
Submission ratio	38.98%
Authors	380
Full solves [?]	331
Full solve Ratio	87.11%

#	User	Runtime	Language	Date
1	Mirel Cosulschi	0.10 s	C	2022-11-29 18:01:51

#	User	Runtime	Language	Date
1	Przemysław Curzytek	0.70 s	C#	2017-01-09 01:26:09

#	User	Runtime	Language	Date
1	Brandon Zhang	0.03 s	C++	2023-11-25 00:32:55
2	Agis Daniels	0.06 s	C++	2020-03-29 20:38:45
3	Frank Endriss	0.06 s	C++	2022-07-05 00:32:24
4	Hamilton Wang	0.06 s	C++	2022-11-02 07:58:00
5	Hidden user	0.07 s	C++	2020-08-07 18:01:25
6	Eyleifur Bjarkason	0.07 s	C++	2021-08-18 22:48:26
7	Grae Yeandle	0.10 s	C++	2017-01-27 18:48:44
8	Dmitry Lyubshin	0.12 s	C++	2018-07-20 01:39:58
9	Liu Husong	0.12 s	C++	2019-04-23 08:21:26
10	Hidden user	0.12 s	C++	2020-01-23 15:05:30

#	User	Runtime	Language	Date
1	Norbert Voelker	0.35 s	Go	2021-11-15 00:57:26

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.59 s	Haskell	2025-07-14 15:32:39
2	Hidden user	1.76 s	Haskell	2022-08-19 13:14:40

#	User	Runtime	Language	Date
1	Bjørn Dons	0.34 s	Java	2023-01-21 19:44:27
2	Issa Issack	0.36 s	Java	2025-03-04 05:25:25
3	Miras Abdishev	0.44 s	Java	2022-11-04 00:30:09
4	Crystal Sharpe	0.51 s	Java	2020-08-12 05:18:37
5	Quân Anh	0.52 s	Java	2024-04-21 07:02:09
6	Martijn Muijsers	0.55 s	Java	2017-03-03 17:08:54
7	John Haas	0.58 s	Java	2021-10-31 02:18:02
8	Jens Ståhl	0.60 s	Java	2012-02-22 19:05:25
9	Taras Romanyuk	0.61 s	Java	2025-03-04 09:13:17
10	Rezwan Arefin	0.62 s	Java	2021-07-20 20:17:29

#	User	Runtime	Language	Date
1	Chijioke Orabueze	0.72 s	JavaScript (Node.js)	2025-12-10 08:34:44

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.60 s	JavaScript (SpiderMonkey)	2023-04-28 14:59:41

#	User	Runtime	Language	Date
1	Chelsea Hoernemann	1.14 s	Kotlin	2022-11-28 22:58:09

#	User	Runtime	Language	Date
1	Andreas Björklund	0.43 s	Python 2	2021-01-29 18:08:09
2	Hidden user	0.48 s	Python 2	2012-02-26 22:46:08
3	Agis Daniels	0.73 s	Python 2	2020-03-29 21:08:46

#	User	Runtime	Language	Date
1	Isaac Lee	0.22 s	Python 3	2025-02-27 01:44:31
2	Naveen Kumar S	0.42 s	Python 3	2026-02-02 01:07:17
3	Lee Zhi Ming	0.44 s	Python 3	2023-05-02 17:20:54
4	Hidden user	0.44 s	Python 3	2024-11-22 03:20:40
5	Harry Zhang	0.44 s	Python 3	2024-12-25 12:04:56
6	Joshua Coward	0.46 s	Python 3	2021-09-13 21:36:08
7	Lin Yuen (Rvhs)	0.47 s	Python 3	2024-02-14 13:54:03
8	Alex Liu	0.48 s	Python 3	2024-07-18 20:29:44
9	Jiaming Kong	0.48 s	Python 3	2025-08-06 15:09:23
10	Dharanidharan M	0.49 s	Python 3	2025-09-03 15:41:33

#	User	Runtime	Language	Date
1	Ivan Petrov	0.89 s	Ruby	2019-11-29 08:27:50
2	Isaac Tietz	1.02 s	Ruby	2022-12-06 02:58:29

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.03 s	Rust	2025-03-04 02:10:03
2	Bas Dirks	0.11 s	Rust	2024-02-11 10:39:58
3	Klas af Geijerstam	0.12 s	Rust	2020-12-04 05:54:46

#	User	Length	Language	Date
1	Mirel Cosulschi	1483	C	2022-11-29 18:01:51

#	User	Length	Language	Date
1	Przemysław Curzytek	8724	C#	2017-01-09 01:26:09

#	User	Length	Language	Date
1	Frederick Pek	629	C++	2021-11-21 02:04:31
2	Johan Wind	641	C++	2018-10-22 17:57:39
3	Chuck Fernández	663	C++	2016-04-23 03:06:10
4	Johan Sannemo	667	C++	2012-02-22 18:21:05
5	Hidden user	671	C++	2020-01-23 15:05:30
6	Rishab Pallepati	694	C++	2021-01-19 04:59:03
7	David Venhoek	720	C++	2016-05-02 11:44:17
8	Alfredo Beaumont	725	C++	2021-03-29 16:00:18
9	Ragur Krishnan	734	C++	2018-04-28 20:20:12
10	Amit Watve	736	C++	2017-08-29 01:04:44

#	User	Length	Language	Date
1	Norbert Voelker	2730	Go	2021-11-15 00:57:26

#	User	Length	Language	Date
1	Steinar Simonnes	2287	Haskell	2025-07-14 15:34:34
2	Hidden user	2682	Haskell	2022-08-19 13:14:40

#	User	Length	Language	Date
1	Hidden user	1259	Java	2016-09-11 19:36:19
2	Peter Jin	1265	Java	2022-10-26 17:39:43
3	Danniel Alcantara	1273	Java	2024-07-03 10:57:12
4	Rahul Gutal	1276	Java	2017-08-29 03:49:11
5	Emilie Hyslop	1346	Java	2020-12-03 03:19:14
6	Erik Odenman	1372	Java	2012-02-22 18:48:02
7	Doug Goodman	1384	Java	2017-09-22 21:08:01
8	Eric Leow Yu Quan	1508	Java	2021-04-28 18:09:42
9	Crystal Sharpe	1657	Java	2020-08-12 05:18:37
10	Paul Boddington	1662	Java	2017-01-09 21:18:59

#	User	Length	Language	Date
1	Chijioke Orabueze	1269	JavaScript (Node.js)	2025-12-10 08:34:44

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	1003	JavaScript (SpiderMonkey)	2023-04-28 14:59:41

#	User	Length	Language	Date
1	Chelsea Hoernemann	2064	Kotlin	2022-11-28 22:58:09

#	User	Length	Language	Date
1	Andreas Björklund	519	Python 2	2021-01-29 18:08:09
2	Hidden user	840	Python 2	2012-02-26 22:46:08
3	Agis Daniels	1127	Python 2	2020-03-29 21:07:21

#	User	Length	Language	Date
1	Peter Stauder	405	Python 3	2023-06-07 21:11:02
2	Oskar Haarklou Veileborg	412	Python 3	2021-08-17 20:31:25
3	Harry Zhang	471	Python 3	2024-12-25 12:04:56
4	Kelly Dance	474	Python 3	2022-09-28 23:41:43
5	Alex Liu	530	Python 3	2024-07-18 20:52:38
6	Yash Sinhal	613	Python 3	2022-11-04 02:53:57
7	Nicholas Russell Saerang	640	Python 3	2022-11-25 23:00:41
8	Lee Zhi Ming	654	Python 3	2023-05-02 17:24:53
9	Casper Rysgaard	696	Python 3	2022-01-22 16:54:00
10	Hidden user	701	Python 3	2023-03-23 20:29:05

#	User	Length	Language	Date
1	Ivan Petrov	811	Ruby	2019-11-29 08:27:50
2	Isaac Tietz	987	Ruby	2022-12-06 02:58:29

#	User	Length	Language	Date
1	Bas Dirks	1483	Rust	2024-02-11 10:39:58
2	Klas af Geijerstam	6632	Rust	2020-12-04 05:54:46
3	Vincent Lagerros	16783	Rust	2024-09-26 19:36:44

Solution running time distribution