Problem I
Height Preservation — Problem Statistics

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Submissions	821
Accepted submissions	195
Submission ratio	23.75%
Authors	200
Full solves [?]	154
Full solve Ratio	77.00%

#	User	Runtime	Language	Date
1	Andreas Björklund	0.26 s	C	2019-10-04 13:39:18
2	Ivan Petrov	0.35 s	C	2019-08-22 15:47:18

#	User	Runtime	Language	Date
1	Milton Kabir	0.14 s	C++	2019-08-28 11:23:10
2	Vũ Phan Thăng Long	0.15 s	C++	2018-06-28 15:47:39
3	Domen Su	0.15 s	C++	2018-09-22 08:47:43
4	SiBi	0.15 s	C++	2018-11-01 19:14:12
5	鹿目圆	0.15 s	C++	2018-11-01 19:24:07
6	Bohao Sun	0.16 s	C++	2018-09-25 05:02:31
7	Truong Luan	0.16 s	C++	2018-10-31 06:54:41
8	Vu Thanh Trung	0.16 s	C++	2021-10-29 09:09:22
9	Giang Truong	0.18 s	C++	2017-12-09 09:33:19
10	Quang Tung Luu	0.18 s	C++	2017-12-12 05:28:35

#	User	Runtime	Language	Date
1	Timothy Buzzelli	1.00 s	Java	2018-02-03 21:28:53
2	Alex Coleman	1.03 s	Java	2018-02-05 18:48:28
3	Rikuto Kubota	1.04 s	Java	2018-11-22 08:39:52
4	Joshua Fair	1.36 s	Java	2018-02-04 03:03:34
5	Jason Portillo	1.39 s	Java	2018-02-03 23:02:58
6	Amon Al-khatib	1.63 s	Java	2018-02-03 21:20:07
7	Nguyễn Mạnh Phúc	1.65 s	Java	2018-01-03 08:34:22
8	Daniel Moyer	1.75 s	Java	2018-02-06 02:16:13
9	Aarav Singh	1.88 s	Java	2018-02-03 22:31:08
10	William Brigham	1.96 s	Java	2018-02-13 20:20:36

#	User	Runtime	Language	Date
1	Rob Hochberg	1.14 s	Python 2	2021-10-23 22:22:35
2	Maj Stenmark	1.64 s	Python 2	2019-10-02 17:53:26
3	Måns Magnusson	1.64 s	Python 2	2019-10-02 19:47:45
4	Thore Husfeldt	1.68 s	Python 2	2019-10-02 21:00:12

#	User	Runtime	Language	Date
1	Rob Hochberg	1.21 s	Python 3	2021-10-23 22:20:15
2	Duoduo Zhao	1.27 s	Python 3	2025-08-17 18:35:40
3	John Key	1.57 s	Python 3	2021-10-26 19:17:14
4	Doug Goodman	1.60 s	Python 3	2023-08-30 18:02:09

#	User	Length	Language	Date
1	Andreas Björklund	2677	C	2019-10-04 13:39:18
2	Ivan Petrov	4151	C	2019-08-22 15:47:18

#	User	Length	Language	Date
1	Milton Kabir	861	C++	2019-08-28 11:23:10
2	Truong Luan	973	C++	2018-10-31 06:54:41
3	Hidden user	974	C++	2019-11-18 06:14:39
4	10a2 tin hsgs	979	C++	2018-06-28 17:45:36
5	Muhammad Fairuzi Teguh	1036	C++	2018-11-07 13:49:31
6	Domen Su	1075	C++	2018-09-22 08:47:43
7	Vũ Phan Thăng Long	1096	C++	2018-06-28 15:47:39
8	Hữu Đức Trịnh	1167	C++	2018-09-10 06:17:33
9	Bohao Sun	1188	C++	2018-09-25 05:02:31
10	Tiến Trần	1257	C++	2018-08-17 07:52:03

#	User	Length	Language	Date
1	Alex Coleman	3531	Java	2018-02-05 18:48:28
2	Timothy Buzzelli	3532	Java	2018-02-03 21:28:53
3	Rikuto Kubota	3941	Java	2018-11-22 08:39:52
4	Amon Al-khatib	4120	Java	2018-02-03 21:20:07
5	Jason Portillo	4164	Java	2018-02-03 23:02:58
6	Aarav Singh	4381	Java	2018-02-03 22:31:08
7	Nguyễn Mạnh Phúc	4410	Java	2018-01-03 08:34:22
8	Daniel Moyer	5961	Java	2018-02-06 02:16:13
9	Joshua Fair	6760	Java	2018-02-04 03:03:34
10	William Brigham	9591	Java	2018-02-13 20:20:36

#	User	Length	Language	Date
1	Rob Hochberg	1160	Python 2	2021-10-23 22:22:35
2	Thore Husfeldt	1632	Python 2	2019-10-02 21:00:12
3	Maj Stenmark	1749	Python 2	2019-10-02 20:50:41
4	Måns Magnusson	2073	Python 2	2019-10-02 19:47:45

#	User	Length	Language	Date
1	John Key	681	Python 3	2021-10-20 03:21:20
2	Rob Hochberg	1160	Python 3	2021-10-23 22:20:15
3	Doug Goodman	1840	Python 3	2023-08-30 18:02:09
4	Duoduo Zhao	3741	Python 3	2025-08-17 18:35:40

Solution running time distribution