Problem A
Firetrucks Are Red — Problem Statistics

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Submissions	2724
Accepted submissions	852
Submission ratio	31.28%
Authors	790
Accepted authors	659
Author ratio	83.42%

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	C	2024-12-15 21:31:09
2	Ivan Petrov	0.09 s	C	2019-11-19 15:14:43

#	User	Runtime	Language	Date
1	Agis Daniels	0.05 s	C++	2022-02-10 15:24:18
2	Lim Ming Yean	0.06 s	C++	2019-11-19 10:33:52
3	Constantijn Dekker	0.06 s	C++	2021-07-21 10:36:53
4	Antti Röyskö	0.07 s	C++	2019-11-17 11:13:30
5	Egor Kulikov	0.07 s	C++	2020-01-18 20:35:29
6	Hidden user	0.07 s	C++	2023-03-17 07:25:51
7	Anvit Sinha	0.07 s	C++	2023-04-23 04:33:15
8	Yu-Chen Chan	0.07 s	C++	2024-04-05 08:14:02
9	Jeremy Lu	0.07 s	C++	2024-11-05 06:40:35
10	Lew Choon Hean	0.07 s	C++	2025-04-29 07:36:15

#	User	Runtime	Language	Date
1	Steven Cheng	0.40 s	Go	2020-06-03 20:37:53

#	User	Runtime	Language	Date
1	Rudy Matela	1.87 s	Haskell	2024-11-15 16:10:20

#	User	Runtime	Language	Date
1	Leon Wang	0.31 s	Java	2024-11-01 16:23:08
2	Bjørn Dons	0.34 s	Java	2019-11-21 21:44:23
3	Brent Yorgey	0.50 s	Java	2020-10-29 02:57:23
4	Jimmy Dinh	0.51 s	Java	2023-04-01 06:54:58
5	Yibo Huang	0.61 s	Java	2020-01-18 20:38:24
6	Alvin Lee	0.61 s	Java	2024-10-30 22:26:27
7	Hidden user	0.65 s	Java	2021-09-09 15:30:27
8	Mark Johnson	0.72 s	Java	2020-10-29 02:47:38
9	Jacob Zhang	0.75 s	Java	2022-10-11 19:55:01
10	Alice Ryhl	0.78 s	Java	2019-11-18 14:07:08

#	User	Runtime	Language	Date
1	Christian Cederquist	0.33 s	JavaScript (SpiderMonkey)	2023-08-18 00:53:44

#	User	Runtime	Language	Date
1	Jacob Huebner	0.74 s	Kotlin	2022-05-04 21:17:31
2	Adam Rankin	1.28 s	Kotlin	2023-09-17 23:50:46

#	User	Runtime	Language	Date
1	Andreas Björklund	0.25 s	Python 2	2019-11-17 15:56:35
2	Adil Rasiyani	0.26 s	Python 2	2022-02-13 07:05:22
3	Troels Bjerre Lund	0.27 s	Python 2	2019-11-17 21:05:24
4	Dilawar Mahmood	0.33 s	Python 2	2019-12-21 16:23:39
5	Kevin Tang	0.34 s	Python 2	2019-11-30 23:19:55
6	Oskar Haarklou Veileborg	0.42 s	Python 2	2019-11-17 20:35:23
7	Conor McCauley	0.44 s	Python 2	2019-11-23 14:01:04

#	User	Runtime	Language	Date
1	Hidden user	0.22 s	Python 3	2025-03-04 00:04:51
2	Maksim Segen	0.22 s	Python 3	2025-06-01 23:39:23
3	Laith Bohsali	0.24 s	Python 3	2025-03-01 21:14:19
4	d1strikt	0.24 s	Python 3	2025-05-29 11:59:02
5	Aaditya Doiphode	0.25 s	Python 3	2024-11-08 01:27:01
6	Hidden user	0.26 s	Python 3	2025-03-12 18:59:18
7	Ram Basnet	0.27 s	Python 3	2023-03-06 04:07:42
8	Donghyun Jang	0.27 s	Python 3	2024-10-12 00:14:34
9	Hidden user	0.27 s	Python 3	2025-03-16 00:49:44
10	Rasmus Pertel	0.27 s	Python 3	2025-05-29 10:34:52

#	User	Runtime	Language	Date
1	Hidden user	0.59 s	Ruby	2019-11-20 18:58:54

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.05 s	Rust	2024-05-21 19:01:29
2	Daniel Anker Hermansen	0.28 s	Rust	2023-11-16 21:43:42
3	Lily Gloudemans	0.31 s	Rust	2022-12-01 05:07:17
4	Yinuo Huang	0.33 s	Rust	2024-05-21 04:05:15

#	User	Runtime	Language	Date
1	Hidden user	0.59 s	Swift	2023-11-29 20:38:29

#	User	Length	Language	Date
1	Hidden user	1787	C	2024-12-15 21:28:44
2	Ivan Petrov	7961	C	2019-11-19 15:14:43

#	User	Length	Language	Date
1	김현수	800	C++	2019-11-17 11:20:56
2	Fares Ibraheem Basuni	850	C++	2021-05-29 09:52:37
3	Wiwit Rifa'i	865	C++	2019-11-17 11:04:35
4	Dmitry Lyubshin	866	C++	2023-03-30 15:14:57
5	Matei Tinca	874	C++	2022-11-24 17:09:22
6	Liu Yuhang	885	C++	2025-04-18 04:19:31
7	Huy Phạm	895	C++	2022-05-20 15:06:47
8	Ragur Krishnan	895	C++	2019-11-19 03:09:58
9	Dewita Sonya Tarabunga	909	C++	2019-11-17 11:10:02
10	Hidden user	915	C++	2024-06-10 11:08:54

#	User	Length	Language	Date
1	Steven Cheng	1120	Go	2020-06-03 20:37:53

#	User	Length	Language	Date
1	Rudy Matela	2726	Haskell	2024-11-15 16:10:20

#	User	Length	Language	Date
1	Jannik Olbrich	1157	Java	2020-01-02 16:41:37
2	Paolo Pellizzoni	1494	Java	2019-12-16 20:32:04
3	Doug Goodman	1510	Java	2020-06-03 20:17:22
4	Crystal Sharpe	1823	Java	2020-07-30 23:01:19
5	Me, Myself, and My Duck	1866	Java	2019-11-17 12:20:26
6	Alice Ryhl	1900	Java	2019-11-18 14:07:08
7	Vinh Ngo	1947	Java	2023-04-05 19:55:34
8	Suhas T. Nagar	2026	Java	2023-10-18 01:54:40
9	Matej Papik	2098	Java	2019-11-21 22:50:24
10	Lucas Scharenbroch	2194	Java	2022-09-19 22:36:00

#	User	Length	Language	Date
1	Christian Cederquist	1599	JavaScript (SpiderMonkey)	2023-08-18 00:53:44

#	User	Length	Language	Date
1	Jacob Huebner	1851	Kotlin	2022-05-04 21:17:31
2	Adam Rankin	1963	Kotlin	2023-09-17 23:50:46

#	User	Length	Language	Date
1	Conor McCauley	535	Python 2	2019-11-23 14:01:04
2	Oskar Haarklou Veileborg	546	Python 2	2019-11-17 20:35:23
3	Andreas Björklund	645	Python 2	2019-11-17 15:56:35
4	Dilawar Mahmood	661	Python 2	2019-12-21 16:23:39
5	Troels Bjerre Lund	849	Python 2	2019-11-17 21:05:24
6	Kevin Tang	900	Python 2	2019-11-30 23:19:55
7	Adil Rasiyani	1237	Python 2	2022-02-13 07:05:22

#	User	Length	Language	Date
1	Sander Oppen	529	Python 3	2024-11-09 18:13:10
2	Damjan Polugic	611	Python 3	2019-11-19 20:35:16
3	Casper Rysgaard	653	Python 3	2021-03-25 20:21:05
4	Ole markus Bråthen	670	Python 3	2024-11-09 19:53:14
5	Benjamin Kugelberg	671	Python 3	2023-10-05 19:03:36
6	Jonatan Nilsson	690	Python 3	2020-11-01 18:11:05
7	Noam Cohen	694	Python 3	2021-03-17 16:43:38
8	Edvard Walde Heimdal	700	Python 3	2024-11-10 15:51:01
9	金宸炜	703	Python 3	2021-03-06 00:33:46
10	Gerth Stølting Brodal	730	Python 3	2019-11-20 22:21:20

#	User	Length	Language	Date
1	Hidden user	830	Ruby	2019-11-20 18:58:54

#	User	Length	Language	Date
1	Lily Gloudemans	1998	Rust	2022-12-01 05:07:17
2	Yinuo Huang	2555	Rust	2024-05-21 04:05:15
3	Vincent Lagerros	7340	Rust	2024-05-21 19:01:29
4	Daniel Anker Hermansen	25015	Rust	2023-11-16 21:43:42

#	User	Length	Language	Date
1	Hidden user	1110	Swift	2023-11-29 20:38:29

Solution running time distribution