Problem A
Locked Treasure — Problem Statistics

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Submissions	1953
Accepted submissions	985
Submission ratio	50.44%
Authors	940
Full solves [?]	865
Full solve Ratio	92.02%

#	User	Runtime	Language	Date
1	Eric Andow	0.00 s	C	2015-11-30 04:24:48
2	Adam Evans	0.00 s	C	2016-02-13 01:00:26
3	Hidden user	0.00 s	C	2017-12-05 23:02:21
4	Andrew Roberts	0.00 s	C	2018-04-22 08:27:03
5	Ziao Wang	0.00 s	C	2018-09-15 20:50:19
6	Ivan Petrov	0.00 s	C	2020-02-28 10:08:09
7	Mirel Cosulschi	0.00 s	C	2024-07-30 21:22:37

#	User	Runtime	Language	Date
1	Martijn den Hoedt	0.02 s	C#	2018-10-12 13:16:24
2	Erik van Holland	0.02 s	C#	2018-11-24 21:20:04

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-07-31 01:12:49

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2021-07-24 00:21:02
2	Diamond	0.02 s	Go	2022-11-19 05:44:01
3	Josenildo Silva	0.08 s	Go	2020-04-26 21:52:00

#	User	Runtime	Language	Date
1	David Wärn	0.00 s	Haskell	2015-11-23 18:53:06
2	Leslie Yip	0.00 s	Haskell	2022-10-16 07:03:07
3	Jannik Olbrich	0.00 s	Haskell	2023-07-12 17:06:12
4	Steinar Simonnes	0.00 s	Haskell	2024-03-09 14:49:16
5	Mason Barnhill	0.01 s	Haskell	2023-04-21 05:44:15

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.05 s	Java	2024-09-18 00:21:04
2	Maxx_Qc	0.05 s	Java	2026-03-12 20:00:44
3	Nick Wu	0.06 s	Java	2015-10-24 20:19:53
4	Marco Vincenzo Karaan	0.06 s	Java	2015-11-04 04:26:18
5	Luu Nhat Phi	0.06 s	Java	2015-11-04 08:32:13
6	Eskil Jarlskog	0.06 s	Java	2015-11-25 14:25:20
7	Michael Sullivan	0.06 s	Java	2015-12-30 00:27:57
8	Hidden user	0.06 s	Java	2017-07-22 13:17:02
9	David Koval	0.06 s	Java	2017-07-22 13:18:25
10	Sam Reinehr	0.06 s	Java	2018-10-20 20:15:23

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-08-10 01:46:08
2	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2025-07-22 12:13:03
3	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-03-22 18:41:29

#	User	Runtime	Language	Date
1	Jacob Huebner	0.11 s	Kotlin	2021-05-31 19:54:31
2	Andreas Wassum	0.17 s	Kotlin	2019-07-23 11:02:12
3	Adam Rankin	0.22 s	Kotlin	2023-04-28 21:46:34
4	Phường Lên	0.26 s	Kotlin	2019-10-23 02:06:10

#	User	Runtime	Language	Date
1	Oskar Haarklou Veileborg	0.00 s	OCaml	2021-01-20 20:48:31

#	User	Runtime	Language	Date
1	Trevor Masters	0.04 s	Python 2	2015-10-26 19:22:10
2	Hermon Mulat	0.04 s	Python 2	2017-01-15 19:58:00
3	William Gan	0.04 s	Python 2	2018-03-10 12:49:28
4	Ciara Godwin	0.04 s	Python 2	2018-04-25 15:53:01
5	Syed Sarfaraz Akhtar	0.04 s	Python 2	2018-09-15 23:03:50
6	Jesper Öqvist	0.04 s	Python 2	2018-11-09 17:07:25
7	Wang Zhi Jian	0.04 s	Python 2	2019-02-25 10:35:13
8	Herbert Ilhan Tanujaya	0.04 s	Python 2	2019-03-24 13:52:09
9	Lars Åström	0.04 s	Python 2	2019-05-06 17:45:32
10	Olav Røthe Bakken	0.04 s	Python 2	2019-06-26 14:56:27

#	User	Runtime	Language	Date
1	Adam Fazekas	0.02 s	Python 3	2015-10-24 20:09:03
2	Charles Zinn	0.02 s	Python 3	2015-10-24 20:49:27
3	John Harrison	0.02 s	Python 3	2015-10-25 19:01:02
4	Mitch Price	0.02 s	Python 3	2015-10-25 19:03:16
5	Luke Reichold	0.02 s	Python 3	2015-10-27 23:33:27
6	James Nickelsen	0.02 s	Python 3	2016-02-20 20:02:26
7	Shaheed Ebrahim	0.02 s	Python 3	2016-07-12 04:17:11
8	Jake Crouch	0.02 s	Python 3	2017-10-07 02:44:37
9	Bernhard Kartefla	0.02 s	Python 3	2017-11-27 18:27:08
10	Ram Basnet	0.02 s	Python 3	2018-03-08 05:27:44

#	User	Runtime	Language	Date
1	Yusuke Ichiki	0.05 s	Ruby	2022-06-20 19:32:57
2	Thomas Feld	0.06 s	Ruby	2023-02-02 12:11:40

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-07-13 12:54:36
2	Iwancof	0.00 s	Rust	2023-06-17 11:58:30
3	藤原潮人	0.00 s	Rust	2023-06-18 09:31:23
4	David Rasch	0.00 s	Rust	2023-10-18 10:55:21
5	Daniel Anker Hermansen	0.00 s	Rust	2024-10-01 21:09:06

#	User	Length	Language	Date
1	Ziao Wang	331	C	2018-09-15 20:50:19
2	Andrew Roberts	384	C	2018-04-22 08:27:03
3	Hidden user	414	C	2017-12-05 23:02:21
4	Mirel Cosulschi	435	C	2024-07-30 21:22:37
5	Adam Evans	699	C	2016-02-13 01:00:26
6	Eric Andow	700	C	2015-11-30 04:24:48
7	Ivan Petrov	719	C	2020-02-28 10:08:09

#	User	Length	Language	Date
1	Martijn den Hoedt	808	C#	2018-10-12 13:16:24
2	Erik van Holland	1386	C#	2018-11-24 21:20:04

#	User	Length	Language	Date
1	Austin Fernandez	243	C++	2019-08-19 02:05:35
2	Scott Shi	271	C++	2016-02-15 04:59:41
3	Ng Mun Hin	290	C++	2025-12-18 18:55:50
4	Andrew He	305	C++	2021-11-08 00:44:56
5	Hidden user	321	C++	2022-06-14 11:42:17
6	Miguel Martins	329	C++	2024-10-16 18:02:16
7	Yeung Man Tsung	331	C++	2023-01-05 11:49:56
8	Rene Josiah M. Quinto	336	C++	2016-06-11 09:18:51
9	人外沙耶	339	C++	2021-03-31 16:41:43
10	Jaehyun Park	342	C++	2015-10-24 19:36:06

#	User	Length	Language	Date
1	Hidden user	347	Common Lisp	2019-07-31 01:12:49

#	User	Length	Language	Date
1	Josenildo Silva	402	Go	2020-04-26 21:52:00
2	Diamond	669	Go	2022-11-19 05:44:01
3	Norbert Voelker	734	Go	2021-07-24 00:21:02

#	User	Length	Language	Date
1	David Wärn	111	Haskell	2015-11-23 18:53:06
2	Leslie Yip	375	Haskell	2022-10-16 07:03:07
3	Jannik Olbrich	581	Haskell	2023-07-12 17:06:12
4	Steinar Simonnes	730	Haskell	2024-03-09 17:13:08
5	Mason Barnhill	827	Haskell	2023-04-21 05:44:15

#	User	Length	Language	Date
1	Dung Vũ	401	Java	2015-11-04 05:20:38
2	Đàm Đức Duy	448	Java	2015-11-04 04:22:40
3	Hau Tran Phuc	450	Java	2015-11-04 04:18:57
4	Dylan Lyon	519	Java	2018-11-08 15:43:35
5	Kurtis Van Gent	524	Java	2015-10-24 20:03:59
6	Thịnh Bùi	525	Java	2015-11-04 05:09:51
7	Philippe Léger	535	Java	2025-04-03 21:54:04
8	Doug Goodman	567	Java	2017-06-22 18:53:28
9	Monica Wei	578	Java	2015-10-24 23:46:30
10	Hidden user	580	Java	2017-08-08 19:13:32

#	User	Length	Language	Date
1	Jimmy Gustafsson	208	JavaScript (SpiderMonkey)	2025-07-22 12:13:03
2	Bjørn Chr. Soltvedt	303	JavaScript (SpiderMonkey)	2016-08-10 01:46:08
3	Christian Pilegaard Cederquist	746	JavaScript (SpiderMonkey)	2023-03-22 18:41:29

#	User	Length	Language	Date
1	Phường Lên	482	Kotlin	2019-10-23 02:06:10
2	Adam Rankin	932	Kotlin	2023-04-28 21:46:34
3	Jacob Huebner	1300	Kotlin	2021-05-31 19:56:33
4	Andreas Wassum	2329	Kotlin	2019-07-23 11:02:12

#	User	Length	Language	Date
1	Oskar Haarklou Veileborg	318	OCaml	2021-01-20 20:48:31

#	User	Length	Language	Date
1	Thomas Feld	148	Python 2	2020-01-28 06:31:33
2	Herbert Ilhan Tanujaya	158	Python 2	2019-03-24 13:52:09
3	Guan Yang Ze	163	Python 2	2019-09-24 20:37:04
4	William Gan	180	Python 2	2018-03-10 12:49:28
5	Wang Zhi Jian	180	Python 2	2019-02-25 10:35:13
6	Lars Åström	193	Python 2	2019-05-06 17:45:32
7	Olav Røthe Bakken	208	Python 2	2019-06-26 14:56:27
8	Garðar Ingvarsson	225	Python 2	2019-10-11 16:07:56
9	Johan Lyts	238	Python 2	2020-02-22 15:16:42
10	Trevor Masters	247	Python 2	2015-10-26 19:22:10

#	User	Length	Language	Date
1	Lee Isaac	89	Python 3	2022-12-30 18:11:32
2	Ole Vik Lysne	91	Python 3	2024-05-28 20:59:27
3	Si Jie Tan	93	Python 3	2026-01-23 02:37:59
4	James Rettie	96	Python 3	2022-10-26 14:31:54
5	Nikita Sandstrom	96	Python 3	2022-11-08 22:44:47
6	Noah Chapman	97	Python 3	2022-11-08 20:57:43
7	Farzam Abrishami	98	Python 3	2025-09-28 21:46:33
8	Kelly Dance	102	Python 3	2022-10-26 05:03:59
9	Noah Hessen Bjerke	102	Python 3	2024-04-02 16:59:36
10	Tai Tze Kin	106	Python 3	2024-05-04 13:17:10

#	User	Length	Language	Date
1	Thomas Feld	64	Ruby	2023-02-02 12:15:30
2	Yusuke Ichiki	244	Ruby	2022-06-20 19:32:57

#	User	Length	Language	Date
1	David Rasch	501	Rust	2023-10-18 10:55:21
2	Bas Dirks	516	Rust	2022-07-13 12:54:36
3	藤原潮人	871	Rust	2023-06-18 09:31:23
4	Iwancof	24913	Rust	2023-06-17 11:58:30
5	Daniel Anker Hermansen	27434	Rust	2024-10-01 21:09:06

Solution running time distribution