Problem I
Umbral Decoding — Problem Statistics

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Submissions	1234
Accepted submissions	187
Submission ratio	15.15%
Authors	235
Full solves [?]	139
Full solve Ratio	59.15%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.58 s	C	2019-07-24 16:31:24
2	Hidden user	0.64 s	C	2019-09-13 01:04:45

#	User	Runtime	Language	Date
1	Anton Prasolov	1.50 s	C#	2023-05-10 23:24:18

#	User	Runtime	Language	Date
1	Eric Xu	0.01 s	C++	2017-10-10 22:40:17
2	Hidden user	0.01 s	C++	2023-04-05 17:07:16
3	Jeremy Lim	0.01 s	C++	2025-03-21 20:22:53
4	Gergely Dániel Péter	0.01 s	C++	2025-07-15 14:06:21
5	Imax Blue	0.02 s	C++	2017-10-07 19:31:19
6	Robert Cummings	0.02 s	C++	2017-10-07 20:52:47
7	Benjamin Qi	0.02 s	C++	2017-10-07 21:07:19
8	Zexuan Zhong	0.02 s	C++	2017-10-07 22:30:34
9	Shang-En Huang	0.02 s	C++	2017-10-07 22:37:21
10	Adam Stuart Richardson	0.02 s	C++	2017-10-15 02:09:38

#	User	Runtime	Language	Date
1	David Brink	0.21 s	Java	2017-10-13 20:00:35
2	Nick Wu	0.25 s	Java	2017-10-07 21:46:45
3	Michael Stephen Skalak	0.25 s	Java	2017-10-11 16:58:22
4	Fred Zhang	0.26 s	Java	2017-10-07 21:55:31
5	Hidden user	0.27 s	Java	2020-06-12 15:06:20
6	Andrei Purcarus	0.34 s	Java	2017-10-08 00:12:46
7	Andrei Purcarus	0.34 s	Java	2017-10-08 03:43:57
8	Travis Meade	0.36 s	Java	2019-03-27 22:29:52
9	Arup Ratan Guha	0.39 s	Java	2017-12-12 06:04:47
10	Bjørn Dons	0.56 s	Java	2020-05-13 20:07:55

#	User	Runtime	Language	Date
1	Jacob Huebner	0.54 s	Kotlin	2022-01-29 03:55:32

#	User	Runtime	Language	Date
1	Hidden user	0.12 s	Python 2	2018-05-28 00:43:50
2	Godmar Back	1.63 s	Python 2	2017-10-09 18:24:38

#	User	Runtime	Language	Date
1	Dilhan Salgado	0.14 s	Python 3	2024-09-21 23:03:04
2	Duoduo Zhao	0.14 s	Python 3	2025-08-30 00:33:37
3	Nicholas Russell Saerang	0.26 s	Python 3	2024-06-17 07:33:44
4	Isaac Lee	2.88 s	Python 3	2021-07-23 06:21:41

#	User	Length	Language	Date
1	Ivan Petrov	3246	C	2019-07-24 16:31:24
2	Hidden user	3326	C	2019-09-13 01:04:45

#	User	Length	Language	Date
1	Anton Prasolov	12270	C#	2023-05-10 23:24:18

#	User	Length	Language	Date
1	Arthur Dadalto	847	C++	2018-08-17 21:16:02
2	Tan Chee Heng	886	C++	2023-04-05 20:06:02
3	Nathan Collins	887	C++	2017-10-08 03:13:47
4	Yeung Man Tsung	895	C++	2023-04-03 18:21:26
5	Lim An Jun	918	C++	2023-04-04 09:05:16
6	Nathan Collins	921	C++	2017-10-07 23:26:50
7	Simone Moretti	960	C++	2022-03-12 14:50:07
8	Paul Liu	969	C++	2017-10-07 21:34:47
9	Elbert	979	C++	2023-04-04 08:37:47
10	Tan Wei Seng	1004	C++	2023-04-04 08:05:37

#	User	Length	Language	Date
1	Hidden user	1730	Java	2020-06-12 15:06:20
2	Sam Reinehr	1841	Java	2019-10-13 00:24:54
3	Arup Ratan Guha	2558	Java	2017-12-12 06:04:47
4	Andrew Polizzotto	2565	Java	2020-08-02 08:49:26
5	Mitch Price	2594	Java	2017-10-10 23:25:44
6	Fred Zhang	2743	Java	2017-10-07 21:55:31
7	Travis Meade	2866	Java	2019-03-27 22:29:52
8	Man Ting Wong	3034	Java	2017-10-17 06:40:28
9	Nick Wu	3101	Java	2017-10-07 21:46:45
10	Andrei Purcarus	3529	Java	2017-10-08 00:12:46

#	User	Length	Language	Date
1	Jacob Huebner	3626	Kotlin	2022-01-29 03:24:49

#	User	Length	Language	Date
1	Hidden user	644	Python 2	2018-05-28 00:43:50
2	Godmar Back	1578	Python 2	2017-10-09 18:06:51

#	User	Length	Language	Date
1	Dilhan Salgado	859	Python 3	2024-09-21 23:03:04
2	Nicholas Russell Saerang	867	Python 3	2024-06-17 07:33:44
3	Isaac Lee	1183	Python 3	2021-07-23 06:21:41
4	Duoduo Zhao	1635	Python 3	2025-08-30 00:33:37

Solution running time distribution