Problem A
Upside Down — Problem Statistics

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Submissions	353
Accepted submissions	189
Submission ratio	53.54%
Authors	175
Full solves [?]	170
Full solve Ratio	97.14%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.02 s	Bash	2025-09-12 21:49:24
2	Danny Robinson	0.02 s	Bash	2025-09-18 03:48:34

#	User	Runtime	Language	Date
1	Jeviczki Jane	0.07 s	C	2025-11-22 01:39:53

#	User	Runtime	Language	Date
1	Deci Bel	0.07 s	C#	2025-11-23 12:37:50
2	Գոռ Բաղդասարյան	0.07 s	C#	2025-11-25 07:01:51
3	Dennis Stegnell	0.08 s	C#	2025-09-19 17:00:51

#	User	Runtime	Language	Date
1	Nick Wu	0.00 s	C++	2025-08-26 20:44:04
2	Sven Rönnbäck	0.00 s	C++	2025-08-28 21:55:28
3	Eduardo Vicente Petry	0.00 s	C++	2025-08-30 20:15:10
4	Leszek Hanusiak	0.00 s	C++	2025-09-23 16:31:28
5	Joshua Andersson	0.00 s	C++	2025-10-23 16:38:52
6	Trần Cảnh Nam	0.00 s	C++	2025-10-30 14:04:54
7	Parker Sell	0.01 s	C++	2021-03-14 19:21:24
8	Michael Abboud	0.01 s	C++	2021-03-14 19:42:01
9	Vladimir Folunin	0.01 s	C++	2025-08-23 15:13:55
10	Jake Bounds	0.01 s	C++	2025-08-27 22:48:16

#	User	Runtime	Language	Date
1	dick move	0.01 s	Crystal	2025-10-25 17:43:10

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.01 s	Haskell	2025-08-24 09:59:04
2	Hidden user	0.03 s	Haskell	2025-09-07 22:39:34
3	Brent Yorgey	0.03 s	Haskell	2025-09-09 00:30:34

#	User	Runtime	Language	Date
1	Mack Wong Yoong Yee	0.20 s	Java	2025-09-05 10:14:50
2	TobiasZ	0.21 s	Java	2025-12-05 19:09:18
3	Hidden user	0.22 s	Java	2025-11-17 16:02:16
4	Martha E.	0.42 s	Java	2025-11-20 02:04:32
5	Evan Kunkel	0.46 s	Java	2021-03-14 18:46:16
6	Thomas Anung Basuki	0.48 s	Java	2025-12-03 06:44:38

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2025-08-15 10:33:52
2	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2025-08-29 07:16:23
3	Jimmy Gustafsson	0.04 s	JavaScript (SpiderMonkey)	2025-09-04 09:27:05

#	User	Runtime	Language	Date
1	Timothy Gaede	0.72 s	Julia	2025-08-14 17:19:03

#	User	Runtime	Language	Date
1	Jason Clarke	0.04 s	Python 3	2025-08-19 21:53:46
2	Jiaye Will Wang	0.04 s	Python 3	2025-08-23 04:59:55
3	Magnus Eide-Fredriksen	0.04 s	Python 3	2025-08-25 20:25:54
4	Michael Goldwasser	0.04 s	Python 3	2025-08-28 04:07:26
5	Ngan Nguyen	0.04 s	Python 3	2025-09-03 07:23:05
6	Ansel Panicker	0.04 s	Python 3	2025-09-03 17:53:24
7	Evan Magill	0.04 s	Python 3	2025-09-04 14:15:15
8	Hunter Mullen	0.04 s	Python 3	2025-09-04 23:09:25
9	Petr	0.04 s	Python 3	2025-09-06 19:12:31
10	Rebecca Jackson	0.04 s	Python 3	2025-09-12 22:46:16

#	User	Runtime	Language	Date
1	Thomas Feld	0.07 s	Ruby	2025-08-19 14:14:27
2	Matzuka	0.07 s	Ruby	2025-11-24 16:46:53

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.00 s	Rust	2025-08-15 19:31:35
2	Pankajkumar Patro	0.00 s	Rust	2025-08-29 15:44:00
3	Emil Dichmann	0.00 s	Rust	2025-09-19 04:10:45
4	Frank Endriss	0.00 s	Rust	2025-11-03 22:26:02
5	Hidden user	0.01 s	Rust	2025-09-15 19:46:07

#	User	Length	Language	Date
1	Chenzhang Hu	26	Bash	2025-09-12 21:49:24
2	Danny Robinson	36	Bash	2025-09-18 03:48:34

#	User	Length	Language	Date
1	Jeviczki Jane	958	C	2025-11-22 01:39:53

#	User	Length	Language	Date
1	Գոռ Բաղդասարյան	458	C#	2025-11-25 07:01:51
2	Deci Bel	529	C#	2025-11-23 12:37:50
3	Dennis Stegnell	1145	C#	2025-09-19 17:00:51

#	User	Length	Language	Date
1	Razvan Dan Moga	313	C++	2025-09-06 14:41:21
2	David Teglas	337	C++	2025-08-30 12:06:30
3	Chernyshenko Tymofiy	343	C++	2025-09-22 15:16:27
4	I Lucian	382	C++	2025-09-06 14:38:25
5	Trần Cảnh Nam	386	C++	2025-10-30 14:04:54
6	Vladimir Folunin	396	C++	2025-08-23 15:13:55
7	Jake Bounds	407	C++	2025-08-27 22:48:16
8	Ata Kırcadağ	436	C++	2025-10-16 14:35:06
9	Andrew Rafter	447	C++	2025-11-20 19:50:59
10	Anastase Luca	448	C++	2025-09-14 22:53:42

#	User	Length	Language	Date
1	dick move	80	Crystal	2025-10-25 17:43:10

#	User	Length	Language	Date
1	Hidden user	104	Haskell	2025-09-07 22:39:34
2	Brent Yorgey	222	Haskell	2025-09-09 00:30:34
3	Steinar Simonnes	344	Haskell	2025-08-24 09:55:58

#	User	Length	Language	Date
1	Hidden user	533	Java	2025-11-17 16:02:16
2	TobiasZ	575	Java	2025-12-05 19:09:18
3	Thomas Anung Basuki	665	Java	2025-12-03 06:44:38
4	Martha E.	697	Java	2025-11-20 02:04:32
5	Evan Kunkel	771	Java	2021-03-14 18:46:16
6	Mack Wong Yoong Yee	966	Java	2025-09-05 10:14:50

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	80	JavaScript (SpiderMonkey)	2025-08-29 07:16:23
2	Bjørn Chr. Soltvedt	97	JavaScript (SpiderMonkey)	2025-08-15 10:34:49
3	Jimmy Gustafsson	102	JavaScript (SpiderMonkey)	2025-09-04 09:27:05

#	User	Length	Language	Date
1	Timothy Gaede	254	Julia	2025-08-14 17:19:03

#	User	Length	Language	Date
1	Hidden user	51	Python 3	2025-09-19 17:13:27
2	Lex Janssens	60	Python 3	2025-09-22 14:36:23
3	Nicholas Russell Saerang	61	Python 3	2025-09-03 04:48:32
4	Ahmed Chamseddine	63	Python 3	2025-08-19 05:46:07
5	Simon Baeckelant	63	Python 3	2025-11-06 10:59:21
6	Zeheng Li	64	Python 3	2025-08-18 23:36:32
7	David Aldenbro	67	Python 3	2025-08-25 17:06:51
8	Kévin Dubrulle	67	Python 3	2025-11-21 15:03:08
9	Sander Oppen	68	Python 3	2025-09-06 00:04:44
10	Casper Rysgaard	70	Python 3	2025-09-16 15:45:35

#	User	Length	Language	Date
1	Thomas Feld	33	Ruby	2025-08-19 14:15:00
2	Matzuka	62	Ruby	2025-11-24 16:49:55

#	User	Length	Language	Date
1	Emil Dichmann	279	Rust	2025-09-19 04:10:45
2	Pankajkumar Patro	407	Rust	2025-08-29 15:44:00
3	Vincent Lagerros	457	Rust	2025-08-15 19:31:35
4	Frank Endriss	2392	Rust	2025-11-03 22:26:02
5	Hidden user	9133	Rust	2025-09-15 19:46:07

Solution running time distribution