Problem B
Thank God it’s Friday — Problem Statistics

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Submissions	1790
Accepted submissions	506
Submission ratio	28.27%
Authors	488
Full solves [?]	415
Full solve Ratio	85.04%

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2019-12-04 12:19:21
2	Sambit Palit	0.00 s	C	2020-11-13 18:26:31
3	陳重諺	0.00 s	C	2021-02-01 19:36:48
4	Sanjiv Dinakar	0.00 s	C	2022-06-27 22:25:21
5	Luiz Eduardo da Silva	0.00 s	C	2022-11-18 21:58:19

#	User	Runtime	Language	Date
1	Anders Parsberg Wagner	0.02 s	C#	2019-11-29 16:34:05
2	Nicolai Pallund	0.02 s	C#	2019-11-29 18:54:12
3	Viktor Borg	0.02 s	C#	2020-02-02 12:07:44
4	Marcus Elg	0.02 s	C#	2020-02-02 12:32:47
5	Jan Matthiessen	0.02 s	C#	2020-07-11 19:48:30
6	Frederik Kirkegaard	0.02 s	C#	2022-11-04 17:41:40
7	Thomas Dragsbæk	0.03 s	C#	2021-11-19 17:42:27
8	Anders Hansen	0.03 s	C#	2022-11-04 17:27:27

#	User	Runtime	Language	Date
1	Jesper Bengtson	0.03 s	F#	2019-11-29 18:55:07
2	Jacob Harris Cryer Kragh	0.08 s	F#	2023-05-30 20:07:08

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Go	2023-08-14 13:02:00
2	Norbert Voelker	0.08 s	Go	2021-11-05 21:10:43

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Haskell	2023-03-17 12:47:24
2	Brent Yorgey	0.01 s	Haskell	2019-11-30 05:50:01
3	Marco Carbone	0.01 s	Haskell	2019-12-02 19:35:09

#	User	Runtime	Language	Date
1	Steven Cheng	0.06 s	Java	2020-05-01 05:47:32
2	Olivia Bizimungu	0.06 s	Java	2020-05-13 02:54:21
3	Crystal Sharpe	0.06 s	Java	2020-05-14 19:03:40
4	Jiayi Lee	0.06 s	Java	2020-05-21 07:46:15
5	Karl Michelsen	0.06 s	Java	2020-11-19 17:40:04
6	Kadin Tang	0.06 s	Java	2020-11-30 00:42:00
7	Logan Pipes	0.06 s	Java	2021-06-06 00:41:42
8	Magnus Larsson	0.06 s	Java	2021-10-22 13:52:15
9	Ruslan	0.06 s	Java	2023-01-06 22:50:33
10	Ranjith M	0.06 s	Java	2023-05-19 03:40:39

#	User	Runtime	Language	Date
1	Jens Hvass	0.41 s	JavaScript (Node.js)	2019-11-29 18:20:34
2	Yaqin Chen Hedin	0.41 s	JavaScript (Node.js)	2020-04-17 08:55:40

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-02-26 17:08:42
2	Nick Cooper	0.02 s	JavaScript (SpiderMonkey)	2024-01-25 01:50:47
3	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2019-12-01 19:30:09

#	User	Runtime	Language	Date
1	Timothy Gaede	0.74 s	Julia	2024-05-22 11:42:54

#	User	Runtime	Language	Date
1	Hidden user	0.15 s	Kotlin	2019-12-11 08:30:03
2	Adam Rankin	0.18 s	Kotlin	2023-09-09 23:25:13
3	Phường Lên	0.21 s	Kotlin	2019-12-11 06:17:34
4	Troels Bjerre Lund	0.22 s	Kotlin	2019-11-29 22:42:43

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2025-02-07 07:27:25

#	User	Runtime	Language	Date
1	Mikkel Hooge Sørensen	0.03 s	Python 2	2019-11-29 16:36:04
2	Måns Magnusson	0.03 s	Python 2	2019-11-29 16:52:25
3	Martin Holst	0.03 s	Python 2	2019-12-01 22:15:50
4	Maj Stenmark	0.03 s	Python 2	2019-12-02 20:09:53
5	Thomas Feld	0.03 s	Python 2	2019-12-03 10:42:29
6	Andreas Björklund	0.03 s	Python 2	2019-12-17 18:14:43
7	Johan Lyts	0.03 s	Python 2	2020-04-07 14:36:42
8	Yanmarshus Bachtiar	0.03 s	Python 2	2020-09-16 11:45:45
9	Sivasankaran D	0.07 s	Python 2	2026-03-11 02:14:18

#	User	Runtime	Language	Date
1	Viktor Bello Thomsen	0.02 s	Python 3	2019-11-29 17:03:16
2	Jakob Israelsen	0.02 s	Python 3	2019-11-29 17:22:21
3	Hidden user	0.02 s	Python 3	2019-11-29 17:29:39
4	Simon Green Kristensen	0.02 s	Python 3	2019-11-29 17:30:52
5	Lasse Meinert	0.02 s	Python 3	2019-11-29 17:38:37
6	Alessandro Bruni	0.02 s	Python 3	2019-11-29 17:41:22
7	Oliver Stenberg Jakobsen	0.02 s	Python 3	2019-11-29 17:44:38
8	Lasse Alsbirk	0.02 s	Python 3	2019-11-29 17:49:14
9	Martí Huerta Climent	0.02 s	Python 3	2019-11-29 17:58:36
10	Alan Ispani	0.02 s	Python 3	2019-11-29 18:36:34

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2020-11-26 21:06:02
2	Alexander Bilde Pedersen	0.06 s	Ruby	2023-04-10 22:25:01
3	Frederik Petersen	0.06 s	Ruby	2023-10-13 12:55:22
4	Thomas Feld	0.06 s	Ruby	2023-10-17 16:04:45
5	Andreas Severin Hauch Trøstrup	0.06 s	Ruby	2024-11-28 21:37:06

#	User	Runtime	Language	Date
1	Klas af Geijerstam	0.00 s	Rust	2020-10-09 09:26:12
2	Pahlevi Fikri Auliya	0.00 s	Rust	2020-10-18 11:07:00
3	David Rasch	0.00 s	Rust	2022-10-28 15:56:10
4	Matteo Vogt	0.00 s	Rust	2022-11-04 17:47:32
5	Daniel Anker Hermansen	0.00 s	Rust	2023-05-28 20:25:13
6	Bas Dirks	0.00 s	Rust	2024-01-16 13:56:08
7	Mathis Laroche	0.00 s	Rust	2024-01-25 02:31:06

#	User	Length	Language	Date
1	陳重諺	761	C	2021-02-01 19:36:48
2	Luiz Eduardo da Silva	1001	C	2022-11-18 21:58:19
3	Sambit Palit	2216	C	2020-11-13 18:26:31
4	Bergur Snorrason	2616	C	2019-12-04 12:19:21
5	Sanjiv Dinakar	4252	C	2022-06-27 22:25:21

#	User	Length	Language	Date
1	Anders Parsberg Wagner	1477	C#	2019-11-29 16:34:05
2	Nicolai Pallund	1485	C#	2019-11-29 18:54:12
3	Thomas Dragsbæk	1663	C#	2021-11-19 17:42:27
4	Marcus Elg	1777	C#	2020-02-02 12:32:47
5	Frederik Kirkegaard	2261	C#	2022-11-04 17:41:40
6	Viktor Borg	2801	C#	2020-02-02 12:07:44
7	Jan Matthiessen	4521	C#	2020-07-11 19:48:30
8	Anders Hansen	5647	C#	2022-11-04 17:27:27

#	User	Length	Language	Date
1	Rafif Musyaffa Indarto	570	C++	2025-03-14 02:19:18
2	Elias Lolck	613	C++	2024-09-12 01:45:44
3	son le thanh	650	C++	2020-11-25 15:19:03
4	Kelly Lu	746	C++	2021-01-24 08:43:03
5	Markus Mathiasen	790	C++	2021-08-06 14:05:48
6	Dmitry Lyubshin	790	C++	2023-04-05 20:19:00
7	Hyunjun Lee	830	C++	2022-10-20 06:06:03
8	Hidden user	871	C++	2021-01-30 15:23:24
9	Grae Yeandle	898	C++	2021-03-20 14:14:23
10	Jesús Pacheco Alonso	925	C++	2025-03-20 18:00:17

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	2346	F#	2023-05-30 20:07:08
2	Jesper Bengtson	3110	F#	2019-11-29 18:55:07

#	User	Length	Language	Date
1	Hidden user	738	Go	2023-08-14 13:02:00
2	Norbert Voelker	1355	Go	2021-11-05 21:10:43

#	User	Length	Language	Date
1	Brent Yorgey	1452	Haskell	2019-11-30 05:50:01
2	Hidden user	1632	Haskell	2023-03-17 12:47:24
3	Marco Carbone	1853	Haskell	2019-12-02 19:35:09

#	User	Length	Language	Date
1	Crystal Sharpe	1307	Java	2020-05-14 19:03:40
2	Caeden Whitaker	1315	Java	2020-06-29 04:19:46
3	Andreas Guldborg Hansen	1315	Java	2021-10-25 18:32:23
4	Randall Scharpf	1474	Java	2021-11-15 02:54:39
5	Doug Goodman	1523	Java	2020-12-06 17:43:17
6	Eric Leow Yu Quan	1551	Java	2021-01-17 06:03:58
7	Supavit Pitaknarongphorn	1573	Java	2021-11-15 01:58:45
8	Lasse Raatz	1612	Java	2019-11-29 16:57:56
9	Magnus Larsson	1621	Java	2021-10-22 13:52:15
10	Nguyen Phuoc Bao Hoang	1710	Java	2023-07-31 14:45:29

#	User	Length	Language	Date
1	Jens Hvass	1233	JavaScript (Node.js)	2019-11-29 18:20:34
2	Yaqin Chen Hedin	2906	JavaScript (Node.js)	2020-04-17 08:55:40

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	545	JavaScript (SpiderMonkey)	2023-02-26 17:08:42
2	Bjørn Chr. Soltvedt	801	JavaScript (SpiderMonkey)	2019-12-01 19:30:09
3	Nick Cooper	1072	JavaScript (SpiderMonkey)	2024-01-25 01:50:47

#	User	Length	Language	Date
1	Timothy Gaede	1165	Julia	2024-05-22 11:42:54

#	User	Length	Language	Date
1	Troels Bjerre Lund	929	Kotlin	2019-11-29 22:42:43
2	Adam Rankin	1524	Kotlin	2023-09-09 23:25:13
3	Hidden user	2018	Kotlin	2019-12-11 08:30:03
4	Phường Lên	3285	Kotlin	2019-12-11 06:17:34

#	User	Length	Language	Date
1	Andriy Zyevakov	5140	Prolog	2025-02-07 07:27:25

#	User	Length	Language	Date
1	Thomas Feld	292	Python 2	2019-12-03 10:42:29
2	Andreas Björklund	544	Python 2	2019-12-17 18:14:43
3	Sivasankaran D	691	Python 2	2026-03-11 02:14:18
4	Martin Holst	746	Python 2	2019-12-01 22:15:50
5	Johan Lyts	770	Python 2	2020-04-07 22:03:24
6	Yanmarshus Bachtiar	887	Python 2	2020-09-16 11:45:45
7	Måns Magnusson	1132	Python 2	2019-11-29 16:52:25
8	Maj Stenmark	1132	Python 2	2019-12-02 20:09:53
9	Mikkel Hooge Sørensen	1185	Python 2	2019-11-29 16:36:04

#	User	Length	Language	Date
1	Alexandre Charland	221	Python 3	2024-05-09 17:30:23
2	Chung Yan Chow	306	Python 3	2026-02-20 06:12:24
3	Ahmed Chamseddine	381	Python 3	2025-05-08 23:02:04
4	Peter Stauder	391	Python 3	2022-12-04 07:54:29
5	William Chorkawy	425	Python 3	2023-04-20 07:51:29
6	Steinar Simonnes	429	Python 3	2024-12-10 15:54:12
7	Guillermo Hernández	435	Python 3	2023-12-31 01:33:47
8	Bjørn Dons	446	Python 3	2020-03-31 22:24:02
9	Timothy White	456	Python 3	2023-03-18 04:19:39
10	Niels Chemnitz	469	Python 3	2021-11-11 13:53:21

#	User	Length	Language	Date
1	Thomas Feld	190	Ruby	2023-10-17 16:11:12
2	Frederik Petersen	263	Ruby	2023-10-13 13:52:26
3	Andreas Severin Hauch Trøstrup	325	Ruby	2024-11-29 13:23:56
4	Alexander Bilde Pedersen	401	Ruby	2023-04-10 22:25:01
5	Hidden user	416	Ruby	2020-11-26 21:06:02

#	User	Length	Language	Date
1	David Rasch	1244	Rust	2022-10-28 15:56:10
2	Bas Dirks	1374	Rust	2024-01-16 13:56:08
3	Matteo Vogt	2590	Rust	2022-11-04 17:47:32
4	Pahlevi Fikri Auliya	2900	Rust	2020-10-18 11:07:00
5	Mathis Laroche	3513	Rust	2024-01-25 02:31:06
6	Klas af Geijerstam	7233	Rust	2020-10-09 09:26:12
7	Daniel Anker Hermansen	21497	Rust	2023-05-28 20:25:13

Solution running time distribution