Problem A
Going to School — Problem Statistics

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Submissions	2866
Accepted submissions	1420
Submission ratio	49.55%
Authors	596
Full solves [?]	517
Full solve Ratio	86.74%

#	User	Score	Language	Date
1	Arvid Jonasson	100	APL	2025-06-23 14:21:59

#	User	Score	Language	Date
1	Chenzhang Hu	100	Bash	2024-05-11 16:09:42

#	User	Score	Language	Date
1	Leslie Yip	100	C#	2022-09-13 14:14:33
2	Isaak Coleman	100	C#	2024-01-15 06:01:52
3	Freek van Keulen	100	C#	2024-03-12 10:09:33
4	traxex	100	C#	2024-05-08 12:51:33
5	Hidden user	40	C#	2023-04-22 10:02:30

#	User	Score	Language	Date
1	Norbert Voelker	100	Go	2022-08-05 23:30:49

#	User	Score	Language	Date
1	Jason Hooper	100	Haskell	2022-07-10 20:00:16
2	Zach Tschetter	100	Haskell	2022-07-14 01:01:37
3	Brent Yorgey	100	Haskell	2022-08-06 17:24:07
4	Hidden user	100	Haskell	2022-08-11 12:29:54
5	Ng Tek In	100	Haskell	2022-09-05 19:19:31
6	David Zacek	100	Haskell	2024-03-11 00:05:22
7	Steinar Simonnes	100	Haskell	2024-03-22 17:22:38
8	vagabundus	100	Haskell	2024-05-09 20:00:14

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	100	JavaScript (SpiderMonkey)	2023-01-25 20:08:32
2	Christian Pilegaard Cederquist	100	JavaScript (SpiderMonkey)	2023-05-29 11:35:41
3	Jimmy Gustafsson	100	JavaScript (SpiderMonkey)	2024-07-28 17:07:54

#	User	Score	Language	Date
1	Timothy Gaede	100	Julia	2025-11-24 07:12:21

#	User	Score	Language	Date
1	Adam Rankin	100	Kotlin	2023-09-05 06:11:19
2	Benjamin Ye	100	Kotlin	2023-10-14 21:57:48
3	Martijn Muijsers	100	Kotlin	2024-05-31 20:48:33

#	User	Score	Language	Date
1	Hidden user	100	OCaml	2024-08-03 10:46:30
2	Sebastian Banert	100	OCaml	2024-09-26 20:16:19

#	User	Score	Language	Date
1	Ingemar Ragnemalm	100	Pascal	2024-06-05 11:59:01

#	User	Score	Language	Date
1	Victor Santos	40	PHP	2024-04-27 06:39:12

#	User	Score	Language	Date
1	Yanmarshus Bachtiar	100	Python 2	2024-03-07 03:14:15

#	User	Score	Language	Date
1	Thomas Feld	100	Ruby	2023-02-21 10:20:35
2	Nicholas Russell Saerang	100	Ruby	2024-02-28 18:27:21
3	Russell Ng	100	Ruby	2024-03-02 09:54:20
4	Vishal Mohanty	100	Ruby	2024-03-02 11:53:32
5	Miorel Palii	100	Ruby	2024-11-29 03:37:03
6	Chenzhang Hu	100	Ruby	2025-09-22 17:41:54

#	User	Score	Language	Date
1	Jason Hooper	100	Rust	2022-07-11 19:13:48
2	Giang Đào	100	Rust	2023-01-14 18:20:20
3	Bas Dirks	100	Rust	2025-01-17 08:21:04
4	Vincent Lagerros	100	Rust	2025-02-02 17:00:02
5	Logan Travis	100	Rust	2025-09-28 20:57:03
6	Krish Lal	100	Rust	2025-09-29 11:02:21

#	User	Score	Language	Date
1	Simon Cederfjärd	100	Zig	2025-06-22 12:08:16

#	User	Runtime	Language	Date
1	Arvid Jonasson	0.02 s	APL	2025-06-23 14:21:59

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.07 s	Bash	2024-05-11 17:54:16

#	User	Runtime	Language	Date
1	Leslie Yip	0.02 s	C#	2022-09-13 14:14:33
2	Freek van Keulen	0.03 s	C#	2024-03-12 10:09:33
3	Isaak Coleman	0.04 s	C#	2024-01-15 06:01:52
4	traxex	0.04 s	C#	2024-05-08 12:51:33

#	User	Runtime	Language	Date
1	Norbert Voelker	0.02 s	Go	2022-08-05 23:30:49

#	User	Runtime	Language	Date
1	Zach Tschetter	0.00 s	Haskell	2022-07-14 01:01:37
2	Hidden user	0.00 s	Haskell	2022-08-11 12:29:54
3	David Zacek	0.00 s	Haskell	2024-03-11 00:05:22
4	vagabundus	0.00 s	Haskell	2024-05-09 20:00:14
5	Jason Hooper	0.01 s	Haskell	2022-07-10 20:00:16
6	Brent Yorgey	0.01 s	Haskell	2022-08-06 17:24:07
7	Ng Tek In	0.01 s	Haskell	2022-09-05 19:19:31
8	Steinar Simonnes	0.01 s	Haskell	2024-03-22 17:22:38

#	User	Runtime	Language	Date
1	Karl Byland	0.04 s	Java	2025-06-24 23:10:24
2	Hidden user	0.05 s	Java	2024-03-08 11:07:16
3	Calista Wong	0.05 s	Java	2024-03-08 21:12:43
4	Tan Jia Hao	0.05 s	Java	2024-03-09 18:07:24
5	Patchandi Yugan Kumar	0.05 s	Java	2024-03-09 18:25:57
6	Joel Leow	0.05 s	Java	2024-03-10 09:29:46
7	Ma Yirui	0.05 s	Java	2024-03-10 12:17:33
8	Sven Rönnbäck	0.05 s	Java	2024-03-22 20:24:48
9	Hidden user	0.05 s	Java	2024-04-03 21:52:34
10	Jacob Klasmark	0.06 s	Java	2022-09-15 09:00:45

#	User	Runtime	Language	Date
1	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-28 17:07:54
2	Bjørn Chr. Soltvedt	0.04 s	JavaScript (SpiderMonkey)	2023-01-25 20:08:32
3	Christian Pilegaard Cederquist	0.09 s	JavaScript (SpiderMonkey)	2023-05-29 11:35:41

#	User	Runtime	Language	Date
1	Timothy Gaede	0.47 s	Julia	2025-11-24 07:12:21

#	User	Runtime	Language	Date
1	Benjamin Ye	0.18 s	Kotlin	2023-10-14 21:57:48
2	Martijn Muijsers	0.19 s	Kotlin	2024-05-31 20:48:33
3	Adam Rankin	0.20 s	Kotlin	2023-09-05 06:11:19

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	OCaml	2024-08-03 10:46:30
2	Sebastian Banert	0.00 s	OCaml	2024-09-26 20:16:19

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2024-06-05 11:59:01

#	User	Runtime	Language	Date
1	Yanmarshus Bachtiar	0.03 s	Python 2	2024-03-07 03:14:15

#	User	Runtime	Language	Date
1	Zach Tschetter	0.04 s	Python 3	2022-07-14 00:50:30
2	Christian Mattsson	0.04 s	Python 3	2022-09-02 14:36:46
3	Olle Lapidus	0.04 s	Python 3	2022-09-17 18:52:49
4	Jonas Seet	0.04 s	Python 3	2022-10-07 17:14:38
5	Peter Stauder	0.04 s	Python 3	2022-10-17 09:00:21
6	Joacim Norlén	0.04 s	Python 3	2024-09-23 21:31:07
7	Shashank Bhatt	0.04 s	Python 3	2024-10-09 19:44:05
8	Chong Tze Yan	0.04 s	Python 3	2024-10-11 13:33:11
9	Hidden user	0.04 s	Python 3	2024-10-21 01:09:34
10	Petr	0.04 s	Python 3	2024-10-29 02:29:53

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-02-21 10:20:35
2	Nicholas Russell Saerang	0.06 s	Ruby	2024-02-28 18:27:21
3	Vishal Mohanty	0.06 s	Ruby	2024-03-02 11:53:32
4	Russell Ng	0.07 s	Ruby	2024-03-02 09:54:20
5	Miorel Palii	0.07 s	Ruby	2024-11-29 03:37:03
6	Chenzhang Hu	0.12 s	Ruby	2025-09-22 17:41:54

#	User	Runtime	Language	Date
1	Jason Hooper	0.00 s	Rust	2022-07-11 19:13:48
2	Giang Đào	0.00 s	Rust	2023-01-14 18:20:20
3	Bas Dirks	0.00 s	Rust	2025-01-17 08:21:04
4	Vincent Lagerros	0.00 s	Rust	2025-02-02 17:00:02
5	Logan Travis	0.00 s	Rust	2025-09-28 20:57:03
6	Krish Lal	0.00 s	Rust	2025-09-29 11:02:21

#	User	Runtime	Language	Date
1	Simon Cederfjärd	0.00 s	Zig	2025-06-22 12:08:16

#	User	Length	Language	Date
1	Arvid Jonasson	53	APL	2025-06-23 15:42:47

#	User	Length	Language	Date
1	Chenzhang Hu	58	Bash	2025-09-13 18:38:19

#	User	Length	Language	Date
1	Hidden user	82	C	2024-03-10 13:38:32
2	Mattia Marziali	119	C	2024-03-09 18:32:07
3	April Clark	384	C	2023-02-16 21:47:45
4	Vu Minh Hieu	467	C	2024-03-05 18:59:47
5	Alvin Yan	483	C	2024-02-23 11:13:27
6	TheACEofTrump	612	C	2022-11-22 03:27:08
7	Alex Harrison	734	C	2025-10-02 03:19:46
8	Jeremy Lim	798	C	2024-02-24 05:01:48
9	Mirel Cosulschi	802	C	2025-04-30 12:05:03
10	Alexander Bilde Pedersen	869	C	2023-11-08 10:26:32

#	User	Length	Language	Date
1	traxex	409	C#	2024-05-08 12:51:33
2	Freek van Keulen	531	C#	2024-03-12 10:09:33
3	Leslie Yip	588	C#	2022-09-13 14:14:33
4	Isaak Coleman	2973	C#	2024-01-15 06:01:52

#	User	Length	Language	Date
1	Nicholas Russell Saerang	127	C++	2024-02-27 13:19:58
2	Ernest Ng Zi Xuan	137	C++	2024-02-27 09:47:17
3	Isaac Lai Yin Chung	139	C++	2024-02-27 09:15:50
4	Russell Ng	242	C++	2024-02-26 08:41:20
5	Elias Lolck	256	C++	2023-05-20 14:25:15
6	Grae Yeandle	292	C++	2024-04-10 16:49:58
7	Fredrik Niemelä	333	C++	2025-06-26 20:57:22
8	Adam Green	335	C++	2023-01-23 10:03:48
9	Ralf Merhof	345	C++	2024-03-23 17:42:31
10	人外沙耶	350	C++	2022-12-09 02:39:49

#	User	Length	Language	Date
1	Norbert Voelker	547	Go	2022-08-05 23:30:49

#	User	Length	Language	Date
1	vagabundus	326	Haskell	2024-05-09 20:00:14
2	Steinar Simonnes	336	Haskell	2024-03-22 17:22:38
3	David Zacek	451	Haskell	2024-03-11 00:05:22
4	Ng Tek In	667	Haskell	2022-09-05 19:19:31
5	Hidden user	1386	Haskell	2022-08-11 12:29:54
6	Jason Hooper	1963	Haskell	2022-07-10 20:00:16
7	Zach Tschetter	2019	Haskell	2022-07-14 01:01:37
8	Brent Yorgey	9938	Haskell	2022-08-06 17:24:07

#	User	Length	Language	Date
1	Majedah	628	Java	2024-02-26 08:25:10
2	Mack Wong Yoong Yee	801	Java	2024-03-22 16:14:57
3	Doug Goodman	919	Java	2022-07-14 18:47:48
4	Koh Jia Xuan, Rick	946	Java	2024-03-06 13:32:42
5	Martin Berglund	948	Java	2025-06-24 15:52:44
6	Tham Yao Ci	982	Java	2024-02-29 05:14:21
7	Lee Wei Ming	1047	Java	2024-03-11 16:43:11
8	Denys Mikelsons	1075	Java	2025-06-25 21:54:24
9	Hidden user	1149	Java	2024-02-28 05:13:48
10	CHEN XIAOYU	1158	Java	2024-03-03 07:05:39

#	User	Length	Language	Date
1	Jimmy Gustafsson	207	JavaScript (SpiderMonkey)	2024-07-28 17:07:54
2	Christian Pilegaard Cederquist	1403	JavaScript (SpiderMonkey)	2023-05-29 11:35:41
3	Bjørn Chr. Soltvedt	19957	JavaScript (SpiderMonkey)	2023-01-25 20:08:32

#	User	Length	Language	Date
1	Timothy Gaede	475	Julia	2025-11-24 07:12:21

#	User	Length	Language	Date
1	Benjamin Ye	543	Kotlin	2023-10-14 21:57:48
2	Adam Rankin	769	Kotlin	2023-09-05 06:11:19
3	Martijn Muijsers	883	Kotlin	2024-05-31 20:48:33

#	User	Length	Language	Date
1	Sebastian Banert	318	OCaml	2024-09-26 20:16:19
2	Hidden user	497	OCaml	2024-08-03 10:46:30

#	User	Length	Language	Date
1	Ingemar Ragnemalm	409	Pascal	2024-06-05 11:59:01

#	User	Length	Language	Date
1	Yanmarshus Bachtiar	551	Python 2	2024-03-07 03:14:15

#	User	Length	Language	Date
1	Vishal Mohanty	64	Python 3	2024-02-29 19:26:01
2	Russell Ng	64	Python 3	2024-03-09 10:06:39
3	Yee Jun Hyeok Bryan	66	Python 3	2024-03-09 15:42:03
4	Chong Tze Yan	66	Python 3	2024-10-11 13:33:11
5	Chong Chan How	70	Python 3	2024-02-28 16:18:13
6	Nicholas Russell Saerang	75	Python 3	2024-02-27 12:06:50
7	Hidden user	78	Python 3	2024-03-04 21:34:18
8	Allysa Tan Li Ying	80	Python 3	2024-03-11 08:25:09
9	Lee Wei Ming	80	Python 3	2024-03-11 16:19:47
10	Ernest Ng Zi Xuan	82	Python 3	2024-02-28 07:27:33

#	User	Length	Language	Date
1	Vishal Mohanty	48	Ruby	2024-03-07 14:47:29
2	Russell Ng	50	Ruby	2024-03-02 19:40:45
3	Thomas Feld	62	Ruby	2023-02-21 12:05:35
4	Nicholas Russell Saerang	65	Ruby	2024-02-28 19:37:39
5	Chenzhang Hu	156	Ruby	2025-09-22 17:41:54
6	Miorel Palii	332	Ruby	2024-11-29 03:37:03

#	User	Length	Language	Date
1	Vincent Lagerros	365	Rust	2025-02-02 17:00:02
2	Krish Lal	1937	Rust	2025-09-29 11:02:21
3	Jason Hooper	1974	Rust	2022-07-11 19:13:48
4	Bas Dirks	2149	Rust	2025-01-17 08:21:04
5	Logan Travis	4196	Rust	2025-09-28 20:57:03
6	Giang Đào	7323	Rust	2023-01-14 18:20:20

#	User	Length	Language	Date
1	Simon Cederfjärd	1017	Zig	2025-06-22 12:08:16

Solution running time distribution