Problem I
Prefix Free Code — Problem Statistics

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Submissions	1793
Accepted submissions	378
Submission ratio	21.08%
Authors	371
Full solves [?]	251
Full solve Ratio	67.65%

#	User	Runtime	Language	Date
1	Laurence Liu	0.06 s	C	2018-03-29 05:31:18
2	Ivan Petrov	0.07 s	C	2019-01-22 14:56:04

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.04 s	C++	2018-04-08 06:21:34
2	Jesse	0.06 s	C++	2021-08-12 17:22:37
3	Renato Ferreira	0.07 s	C++	2018-03-24 18:28:28
4	Haobin Ni	0.07 s	C++	2018-03-24 18:55:10
5	Yuchong Pan	0.07 s	C++	2018-03-24 19:40:13
6	Animesh Fatehpuria	0.07 s	C++	2018-03-27 00:59:24
7	Laurence Liu	0.07 s	C++	2018-04-14 08:18:47
8	SiBi	0.07 s	C++	2018-10-27 08:26:19
9	Emily Raucci	0.07 s	C++	2021-06-26 02:09:08
10	Sheng Zhou	0.08 s	C++	2018-03-24 18:47:29

#	User	Runtime	Language	Date
1	Udo Stenzel	0.50 s	Haskell	2023-05-11 16:07:13
2	TJ Takei	0.80 s	Haskell	2025-09-11 12:05:21
3	Brent Yorgey	1.20 s	Haskell	2020-05-13 13:11:14

#	User	Runtime	Language	Date
1	Spencer Compton	0.36 s	Java	2018-04-01 22:39:56
2	Benjamin Reidys	0.39 s	Java	2020-02-08 20:45:58
3	Jacob Huebner	0.47 s	Java	2021-07-20 04:45:30
4	Nick Wu	0.51 s	Java	2018-03-24 18:27:49
5	Yilun Wu	0.55 s	Java	2018-03-24 20:32:40
6	Sharon Barak	0.56 s	Java	2018-03-27 00:20:25
7	Derrick Liang	0.56 s	Java	2019-10-27 07:15:34
8	Arup Ratan Guha	0.57 s	Java	2018-03-24 19:43:05
9	刘志伟	0.57 s	Java	2018-08-26 14:52:34
10	Sichao Yang	0.58 s	Java	2018-03-24 21:16:57

#	User	Runtime	Language	Date
1	Xiaoxuan Zhang	0.45 s	Python 2	2019-02-24 22:41:50
2	Yunfan Zhang	0.72 s	Python 2	2018-10-10 12:06:23
3	Ted Ying	0.91 s	Python 2	2018-03-24 19:43:21

#	User	Runtime	Language	Date
1	Jonatan Nilsson	0.29 s	Python 3	2024-11-07 16:44:04
2	Harry Zhang	0.51 s	Python 3	2024-12-04 19:38:03
3	Karl Raud	0.68 s	Python 3	2022-10-07 02:13:39
4	Måns Magnusson	0.68 s	Python 3	2024-11-05 21:00:55
5	Christoffer Sommerlund	0.82 s	Python 3	2022-10-04 19:16:32
6	Arihant Jain	0.83 s	Python 3	2020-02-14 00:58:34
7	Arihant Jain	0.83 s	Python 3	2020-02-18 02:39:16
8	Jonathan Cederlund	0.85 s	Python 3	2023-05-09 10:30:33
9	Andreas Björklund	0.86 s	Python 3	2022-10-07 20:46:48

#	User	Runtime	Language	Date
1	Niklas Sandén	0.24 s	Rust	2022-10-01 12:48:28
2	Daniel Anker Hermansen	0.58 s	Rust	2024-10-27 20:08:45

#	User	Length	Language	Date
1	Laurence Liu	1973	C	2018-04-07 06:28:23
2	Ivan Petrov	2197	C	2019-01-22 14:56:04

#	User	Length	Language	Date
1	Elias Lolck	1392	C++	2022-10-01 12:06:00
2	Hidden user	1449	C++	2019-09-15 05:36:32
3	banana Chinese	1453	C++	2019-09-28 14:31:36
4	Fengyang Wang	1469	C++	2018-03-24 18:59:59
5	SiBi	1469	C++	2019-02-27 12:25:44
6	Wiwit Rifa'i	1470	C++	2018-03-24 19:00:25
7	Joakim Blikstad	1475	C++	2018-04-01 00:27:31
8	Lingsong Zeng	1484	C++	2018-03-24 19:43:27
9	Billy Herrington	1490	C++	2018-06-05 02:24:16
10	Sergio Vieri	1497	C++	2018-04-18 11:46:48

#	User	Length	Language	Date
1	Udo Stenzel	882	Haskell	2023-05-11 16:07:13
2	Brent Yorgey	4525	Haskell	2020-05-13 13:11:14
3	TJ Takei	6116	Haskell	2025-09-11 12:05:21

#	User	Length	Language	Date
1	Natalie Longtin	1995	Java	2019-02-01 17:00:17
2	Jonathan Hartnett	2009	Java	2018-03-24 19:59:14
3	Sharon Barak	2036	Java	2018-03-27 00:20:25
4	Daniel Moyer	2260	Java	2018-03-24 23:00:10
5	Finn Lidbetter	2276	Java	2018-03-24 19:39:55
6	Spencer Compton	2369	Java	2018-04-01 22:39:56
7	Arup Ratan Guha	2531	Java	2018-03-24 19:43:05
8	Brandon Chung	2592	Java	2018-03-24 19:25:41
9	Benjamin Reidys	2863	Java	2020-02-08 20:45:58
10	Sichao Yang	2919	Java	2018-03-24 21:16:57

#	User	Length	Language	Date
1	Xiaoxuan Zhang	1689	Python 2	2019-02-24 22:41:50
2	Ted Ying	1850	Python 2	2018-03-24 19:43:21
3	Yunfan Zhang	4945	Python 2	2018-10-10 12:06:23

#	User	Length	Language	Date
1	Jonatan Nilsson	1242	Python 3	2024-11-07 16:44:04
2	Karl Raud	1432	Python 3	2022-10-07 02:13:39
3	Andreas Björklund	1661	Python 3	2022-10-07 20:46:48
4	Jonathan Cederlund	1707	Python 3	2023-05-09 10:30:33
5	Måns Magnusson	2850	Python 3	2024-11-05 21:00:55
6	Harry Zhang	2924	Python 3	2024-12-04 19:38:03
7	Arihant Jain	3008	Python 3	2020-02-14 00:58:34
8	Arihant Jain	3008	Python 3	2020-02-18 02:39:16
9	Christoffer Sommerlund	3931	Python 3	2022-10-04 19:16:32

#	User	Length	Language	Date
1	Daniel Anker Hermansen	13803	Rust	2024-10-27 20:08:45
2	Niklas Sandén	32724	Rust	2022-10-01 12:48:28

Solution running time distribution