Problem A
Undrabarn — Problem Statistics

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Submissions	256
Accepted submissions	135
Submission ratio	52.73%
Authors	75
Accepted authors	65
Author ratio	86.67%

#	User	Score	Language	Date
1	Rúnar Vestmann	50	C#	2019-03-13 22:59:59

#	User	Score	Language	Date
1	Frigg Einarsdóttir	100	C++	2023-10-20 11:11:08
2	Kristinn Hrafn Daníelsson	100	C++	2024-07-16 12:41:44
3	Eva Sóllilja Einarsdóttir	100	C++	2024-11-22 13:22:28
4	Christian Yongwhan Lim	100	C++	2024-12-30 23:25:56
5	Bjarki Ágúst Guðmundsson	100	C++	2025-01-12 15:50:39
6	Ke Sun	100	C++	2025-01-15 15:04:46
7	Nick Wu	100	C++	2025-06-13 03:57:16
8	Teethawat Kumying	100	C++	2025-07-15 18:27:42
9	Chatchanan Panyaprasirtkit	50	C++	2025-07-17 16:11:57
10	Gunnsteinn Þór Ólason	50	C++	2024-07-21 20:10:11

#	User	Score	Language	Date
1	Hidden user	100	Go	2021-10-21 13:06:18

#	User	Score	Language	Date
1	Brent Yorgey	100	Haskell	2024-11-29 04:01:08

#	User	Score	Language	Date
1	Bjørn Dons	100	Java	2025-03-22 21:07:26
2	Victorio NASCIMENTO	50	Java	2025-02-09 19:04:36
3	Gísli Freyr Sæmundsson	50	Java	2018-02-10 00:57:24

#	User	Score	Language	Date
1	Róbert Kristian Freysson	50	JavaScript (Node.js)	2022-11-25 11:38:56

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	50	JavaScript (SpiderMonkey)	2024-11-26 15:19:57
2	Aðalsteinn Leifsson	50	JavaScript (SpiderMonkey)	2018-03-10 19:23:00

#	User	Score	Language	Date
1	Timothy Gaede	100	Julia	2025-03-31 08:53:12

#	User	Score	Language	Date
1	Guðni Natan Gunnarsson	100	Python 2	2017-10-19 22:21:23
2	주안석	100	Python 2	2017-11-30 12:18:02
3	Sigurður Jens Albertsson	100	Python 2	2018-01-12 18:24:05
4	すうぇっりえるはこん	100	Python 2	2019-01-29 22:38:08
5	Elvar Árni Bjarnason	100	Python 2	2020-02-11 18:07:53
6	Samúel Arnar Hafsteinsson	100	Python 2	2020-02-11 18:08:23

#	User	Score	Language	Date
1	Thomas Feld	100	Ruby	2025-02-18 13:54:35

#	User	Score	Language	Date
1	Frank Endriss	100	Rust	2024-12-31 17:02:13
2	Vincent Lagerros	100	Rust	2025-01-30 18:27:00
3	Hidden user	100	Rust	2025-04-24 08:45:33

#	User	Runtime	Language	Date
1	Frigg Einarsdóttir	0.00 s	C++	2023-10-20 11:11:08
2	Kristinn Hrafn Daníelsson	0.00 s	C++	2024-07-16 12:41:44
3	Eva Sóllilja Einarsdóttir	0.00 s	C++	2024-11-22 13:22:28
4	Christian Yongwhan Lim	0.00 s	C++	2024-12-30 23:25:56
5	Bjarki Ágúst Guðmundsson	0.00 s	C++	2025-01-12 15:50:39
6	Ke Sun	0.00 s	C++	2025-01-15 15:04:46
7	Nick Wu	0.00 s	C++	2025-06-13 03:57:16
8	Teethawat Kumying	0.00 s	C++	2025-07-15 18:27:42

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Go	2021-10-21 13:06:18

#	User	Runtime	Language	Date
1	Brent Yorgey	0.00 s	Haskell	2024-11-29 04:01:08

#	User	Runtime	Language	Date
1	Bjørn Dons	0.04 s	Java	2025-03-22 21:07:26

#	User	Runtime	Language	Date
1	Timothy Gaede	0.29 s	Julia	2025-03-31 08:53:12

#	User	Runtime	Language	Date
1	Guðni Natan Gunnarsson	0.08 s	Python 2	2017-10-19 22:21:23
2	주안석	0.08 s	Python 2	2017-11-30 12:18:02
3	Sigurður Jens Albertsson	0.08 s	Python 2	2018-01-12 18:24:05
4	すうぇっりえるはこん	0.08 s	Python 2	2019-01-29 22:38:08
5	Elvar Árni Bjarnason	0.08 s	Python 2	2020-02-11 18:07:53
6	Samúel Arnar Hafsteinsson	0.08 s	Python 2	2020-02-11 18:08:23

#	User	Runtime	Language	Date
1	Atli Fannar Franklín	0.04 s	Python 3	2024-11-26 12:58:56
2	Sander Oppen	0.04 s	Python 3	2024-11-27 15:12:28
3	Andreas Björklund	0.04 s	Python 3	2024-12-01 07:07:20
4	Nicholas Russell Saerang	0.04 s	Python 3	2024-12-12 12:55:10
5	Hidden user	0.04 s	Python 3	2024-12-30 16:42:32
6	Ingvar Þór Jónsson	0.04 s	Python 3	2025-01-17 23:21:27
7	Vincent Lagerros	0.04 s	Python 3	2025-01-30 18:29:39
8	Rafael Kristoforus Yanto	0.04 s	Python 3	2025-02-03 22:10:13
9	Firman Syah	0.04 s	Python 3	2025-02-11 07:47:18
10	Jacob Lorenzen	0.04 s	Python 3	2025-02-27 10:57:04

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2025-02-18 13:54:35

#	User	Runtime	Language	Date
1	Frank Endriss	0.00 s	Rust	2024-12-31 17:02:13
2	Vincent Lagerros	0.00 s	Rust	2025-01-30 18:27:00
3	Hidden user	0.00 s	Rust	2025-04-24 08:45:33

#	User	Length	Language	Date
1	Teethawat Kumying	557	C++	2025-07-15 18:27:42
2	Christian Yongwhan Lim	637	C++	2024-12-30 23:25:56
3	Kristinn Hrafn Daníelsson	707	C++	2024-07-16 12:41:44
4	Eva Sóllilja Einarsdóttir	893	C++	2024-11-22 13:22:28
5	Frigg Einarsdóttir	1137	C++	2023-10-20 11:11:08
6	Bjarki Ágúst Guðmundsson	1399	C++	2025-01-12 15:50:39
7	Ke Sun	1701	C++	2025-01-15 15:04:46
8	Nick Wu	3207	C++	2025-06-13 03:57:16

#	User	Length	Language	Date
1	Hidden user	1315	Go	2021-10-21 13:06:18

#	User	Length	Language	Date
1	Brent Yorgey	1434	Haskell	2024-11-29 04:01:08

#	User	Length	Language	Date
1	Bjørn Dons	4917	Java	2025-03-22 21:07:26

#	User	Length	Language	Date
1	Timothy Gaede	331	Julia	2025-03-31 08:53:12

#	User	Length	Language	Date
1	Sigurður Jens Albertsson	140	Python 2	2018-01-12 18:24:05
2	Elvar Árni Bjarnason	187	Python 2	2020-02-11 18:07:53
3	Samúel Arnar Hafsteinsson	199	Python 2	2020-02-11 18:08:23
4	Guðni Natan Gunnarsson	303	Python 2	2017-10-19 22:21:23
5	すうぇっりえるはこん	342	Python 2	2019-01-29 22:38:08
6	주안석	1042	Python 2	2017-11-30 12:18:02

#	User	Length	Language	Date
1	Hidden user	78	Python 3	2025-05-31 14:22:01
2	Vincent Lagerros	89	Python 3	2025-01-30 18:29:39
3	Nicholas Russell Saerang	120	Python 3	2024-12-12 12:55:10
4	Ahmed Chamseddine	127	Python 3	2025-07-04 20:36:47
5	Sander Oppen	137	Python 3	2024-11-27 15:14:02
6	Farzam Abrishami	151	Python 3	2025-04-25 20:18:08
7	Elvar Árni Bjarnason	163	Python 3	2020-02-11 13:25:59
8	Darren	168	Python 3	2025-03-07 04:21:27
9	Rafael Kristoforus Yanto	172	Python 3	2025-02-03 22:10:13
10	Samúel Arnar Hafsteinsson	199	Python 3	2020-02-11 18:05:25

#	User	Length	Language	Date
1	Thomas Feld	83	Ruby	2025-02-18 14:06:52

#	User	Length	Language	Date
1	Vincent Lagerros	442	Rust	2025-01-30 18:27:00
2	Hidden user	7748	Rust	2025-04-24 08:45:33
3	Frank Endriss	8429	Rust	2024-12-31 17:02:13

Solution running time distribution