Problem A
Alien Codebreaking — Problem Statistics

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Submissions	913
Accepted submissions	246
Submission ratio	26.94%
Authors	113
Full solves [?]	43
Full solve Ratio	38.05%

#	User	Runtime	Language	Date
1	Jeremy Lim	0.36 s	C++	2025-09-05 16:53:19
2	Nick Wu	1.42 s	C++	2023-06-26 11:36:02
3	Stan Zhang	1.43 s	C++	2023-06-25 06:28:14
4	Atli Fannar Franklín	2.92 s	C++	2024-12-19 16:31:04
5	Aditya Sundaram	4.03 s	C++	2024-11-25 00:15:56
6	Ted Dek	4.26 s	C++	2022-06-05 15:05:35
7	Rizk War	4.29 s	C++	2025-11-11 13:50:33
8	Jeffrey H.	4.91 s	C++	2025-04-01 14:07:19
9	Teodor Bucht	5.04 s	C++	2022-12-23 23:02:08
10	Pilla Venkata Sekhar	5.20 s	C++	2025-03-30 17:50:16

#	User	Runtime	Language	Date
1	Udo Stenzel	0.51 s	Haskell	2025-09-01 14:54:27

#	User	Runtime	Language	Date
1	Alex Loiko	6.68 s	Java	2019-12-08 16:42:03
2	Kevin Tang	7.93 s	Java	2021-06-05 09:12:31
3	Aryan Rezanejad	8.85 s	Java	2019-08-31 15:08:43
4	Josenildo Silva	8.95 s	Java	2019-10-14 03:22:41
5	Dilbarjot Randhawa	9.04 s	Java	2019-11-03 21:45:40
6	Centaur Centaur	9.17 s	Java	2021-03-20 13:00:12
7	Hidden user	9.23 s	Java	2020-10-31 04:58:31
8	Ivan Petrov	9.38 s	Java	2020-02-27 10:38:31
9	UPT_Helix	9.39 s	Java	2021-03-20 12:45:41
10	UPT_Insight	10.64 s	Java	2021-03-20 12:59:47

#	User	Runtime	Language	Date
1	Jeremy Lim	0.74 s	Julia	2026-02-26 22:35:24

#	User	Runtime	Language	Date
1	Hidden user	3.23 s	Python 2	2018-12-10 20:06:13
2	Andreas Björklund	11.36 s	Python 2	2022-01-16 16:40:12

#	User	Runtime	Language	Date
1	Jeremy Lim	2.90 s	Python 3	2025-08-18 00:45:51
2	Thomas Draper	3.08 s	Python 3	2024-03-26 16:42:35
3	Nicholas Russell Saerang	3.36 s	Python 3	2024-12-21 03:20:18
4	Salomón Achar Saad Mograbi	3.42 s	Python 3	2025-09-26 20:27:33
5	Javier Martínez	3.42 s	Python 3	2025-11-12 16:12:34
6	Isaac Cohen Turquie	3.42 s	Python 3	2026-02-15 19:56:20
7	José Manuel Sáinz Trápaga Zorrilla	3.42 s	Python 3	2026-02-16 01:14:00
8	Abraham Michan Laniado	3.43 s	Python 3	2025-09-26 21:46:41
9	Andrés Iglesias Fernández	3.43 s	Python 3	2025-12-05 21:20:45
10	Emiliano Espinosa Prieto	3.43 s	Python 3	2026-02-18 05:32:06

#	User	Length	Language	Date
1	Jeremy Lim	1235	C++	2025-09-05 17:08:30
2	Johan Wind	3731	C++	2019-08-15 21:13:47
3	Ted Dek	4185	C++	2022-06-05 15:05:35
4	Atli Fannar Franklín	4532	C++	2024-12-19 16:31:04
5	Ludo Pulles	4688	C++	2018-11-17 18:08:16
6	Aditya Sundaram	4841	C++	2024-11-25 00:15:56
7	عمر ماهر	5459	C++	2025-10-08 08:17:11
8	Pilla Venkata Sekhar	5462	C++	2025-03-30 17:50:16
9	Rizk War	5570	C++	2025-11-12 03:47:09
10	Kristoffer Åhgren	5760	C++	2019-12-09 12:56:23

#	User	Length	Language	Date
1	Udo Stenzel	4918	Haskell	2025-09-01 14:46:18

#	User	Length	Language	Date
1	Kevin Tang	3907	Java	2021-06-05 08:47:48
2	arda atci	4159	Java	2020-10-05 22:44:09
3	Alex Loiko	5163	Java	2019-12-08 16:42:03
4	UPT_Insight	5183	Java	2021-03-20 12:59:47
5	Josenildo Silva	8035	Java	2019-10-14 03:22:41
6	Ivan Petrov	9217	Java	2020-02-27 10:38:31
7	UPT_Helix	9428	Java	2021-03-20 12:45:41
8	Aryan Rezanejad	9549	Java	2019-08-31 15:08:43
9	Hidden user	9549	Java	2020-10-31 04:58:31
10	Centaur Centaur	9549	Java	2021-03-20 13:00:12

#	User	Length	Language	Date
1	Jeremy Lim	450	Julia	2025-09-03 15:17:00

#	User	Length	Language	Date
1	Hidden user	1880	Python 2	2018-12-10 20:05:09
2	Andreas Björklund	6332	Python 2	2022-01-16 16:40:12

#	User	Length	Language	Date
1	Thomas Draper	488	Python 3	2024-01-29 02:52:01
2	Paul Swingle	526	Python 3	2022-12-12 05:50:10
3	Nicholas Russell Saerang	811	Python 3	2024-12-21 03:13:15
4	Alvaro Gamboa Rosillo	837	Python 3	2025-11-12 21:34:57
5	Andrés Iglesias Fernández	837	Python 3	2025-12-05 21:20:45
6	Isaac Cohen Turquie	837	Python 3	2026-02-15 19:56:20
7	José Manuel Sáinz Trápaga Zorrilla	837	Python 3	2026-02-16 01:14:00
8	Emiliano Espinosa Prieto	837	Python 3	2026-02-18 05:32:06
9	Salomón Achar Saad Mograbi	862	Python 3	2025-09-26 20:27:33
10	Abraham Michan Laniado	862	Python 3	2025-09-26 21:46:41

Solution running time distribution