Problem A
Geppetto — Problem Statistics

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Submissions	5497
Accepted submissions	2428
Submission ratio	44.17%
Authors	1910
Full solves [?]	1684
Full solve Ratio	88.17%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2018-02-04 06:52:57
2	Arup Ratan Guha	0.00 s	C	2022-04-22 18:56:29
3	Alexander Bilde Pedersen	0.00 s	C	2023-02-08 16:41:14
4	Bergur Snorrason	0.01 s	C	2019-09-24 16:08:12
5	Unai Hernández Minaberry	0.01 s	C	2020-07-29 03:53:23
6	Hidden user	0.01 s	C	2020-09-28 02:54:00
7	pengin	0.01 s	C	2021-06-01 13:03:50
8	Mikael K Eriksson	0.01 s	C	2021-10-21 21:46:59
9	Jack Gurdin	0.01 s	C	2023-11-01 06:34:19
10	Ionitu	0.01 s	C	2024-02-06 16:00:53

#	User	Runtime	Language	Date
1	Louis Rivera	0.05 s	C#	2020-09-25 14:26:34
2	Yousef Almutairi	0.06 s	C#	2020-09-30 04:25:39
3	Akshay Patel	0.10 s	C#	2020-09-29 00:40:08
4	Hidden user	0.10 s	C#	2022-02-08 13:55:16
5	Abdellatif Elyoussefy	0.11 s	C#	2020-05-24 21:33:38
6	Evan Miller	0.11 s	C#	2025-10-23 16:22:21
7	Michael Damsgaard	0.12 s	C#	2024-12-24 10:54:14
8	Hidden user	0.31 s	C#	2024-02-19 17:41:49

#	User	Runtime	Language	Date
1	Hidden user	0.07 s	Common Lisp	2019-07-25 04:22:37

#	User	Runtime	Language	Date
1	Christopher	0.06 s	Dart	2023-11-07 19:01:51

#	User	Runtime	Language	Date
1	Nicklas Østerberg	0.24 s	F#	2025-02-07 14:26:34
2	Jacob Harris Cryer Kragh	0.64 s	F#	2023-02-26 13:22:38

#	User	Runtime	Language	Date
1	Jonas Mittnacht	0.03 s	Go	2024-02-20 20:15:01
2	Norbert Voelker	0.07 s	Go	2021-09-11 23:51:27

#	User	Runtime	Language	Date
1	Johan Meier	0.01 s	Haskell	2016-12-17 11:14:05
2	Hidden user	0.07 s	Haskell	2023-01-05 21:38:39
3	Dan Greco	0.07 s	Haskell	2025-09-17 20:24:56
4	Ola Berglund	0.26 s	Haskell	2023-11-15 19:58:23
5	Trinh Hoang Anh	0.30 s	Haskell	2017-08-26 10:03:33
6	Steinar Simonnes	0.46 s	Haskell	2025-10-12 12:19:02

#	User	Runtime	Language	Date
1	Markus Sværke Staael	0.05 s	Java	2026-02-03 11:20:20
2	Nick Wu	0.06 s	Java	2016-09-05 01:32:58
3	Jamie Kihira	0.07 s	Java	2018-03-22 00:50:23
4	Asmus Tørsleff	0.07 s	Java	2022-02-10 23:37:17
5	Micah Stairs	0.08 s	Java	2016-04-26 01:36:35
6	Paul Boddington	0.08 s	Java	2017-01-04 01:24:14
7	Guillaume Wery	0.08 s	Java	2018-10-17 10:10:41
8	Bjørn Dons	0.08 s	Java	2018-11-01 03:08:21
9	James Black	0.09 s	Java	2016-11-03 01:08:34
10	Frank Ruskey	0.09 s	Java	2016-11-26 22:32:55

#	User	Runtime	Language	Date
1	William Jackson	0.06 s	JavaScript (Node.js)	2019-02-22 22:31:36

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-05-01 13:00:44
2	Christopher Walther	0.11 s	JavaScript (SpiderMonkey)	2021-04-23 15:52:06
3	Geir Magne Karlsen	0.28 s	JavaScript (SpiderMonkey)	2017-01-16 21:33:13
4	Bjørn Chr. Soltvedt	0.65 s	JavaScript (SpiderMonkey)	2016-11-10 23:27:50

#	User	Runtime	Language	Date
1	Hidden user	0.91 s	Julia	2025-03-02 18:27:09
2	Timothy Gaede	0.98 s	Julia	2024-04-23 08:53:57

#	User	Runtime	Language	Date
1	Phường Lên	0.19 s	Kotlin	2020-08-25 17:08:56
2	Leonard Alexander Blechschmidt	0.30 s	Kotlin	2021-11-22 18:54:03
3	Johnny Baloney	0.37 s	Kotlin	2022-02-17 18:02:36
4	Adam Rankin	0.43 s	Kotlin	2023-05-09 21:26:40
5	Ali M. Nekoh	0.50 s	Kotlin	2025-05-22 10:26:44
6	Adam Koprowski	0.65 s	Kotlin	2020-11-23 21:50:05
7	Chris Johnson	0.80 s	Kotlin	2025-04-05 03:09:52
8	Ioannis Karras	0.94 s	Kotlin	2025-03-29 13:35:48

#	User	Runtime	Language	Date
1	William Fiset	0.01 s	Objective-C	2016-08-02 00:13:48

#	User	Runtime	Language	Date
1	Unai Hernández Minaberry	0.03 s	OCaml	2020-07-29 05:31:52

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.02 s	Pascal	2020-01-04 23:21:54

#	User	Runtime	Language	Date
1	Hermon Mulat	0.05 s	Python 2	2019-01-15 22:30:08
2	jano gjoshi	0.06 s	Python 2	2020-09-29 19:54:23
3	Justin Zhang	0.06 s	Python 2	2020-09-29 23:38:04
4	Michael Kotwica	0.06 s	Python 2	2020-09-30 17:43:39
5	Andreas Björklund	0.06 s	Python 2	2020-10-25 07:53:20
6	Hang Zhao	0.06 s	Python 2	2021-01-24 12:40:46
7	Yesenia Guevara	0.06 s	Python 2	2021-09-29 15:51:37
8	Benjamin Pachev	0.08 s	Python 2	2019-10-19 23:56:47
9	Johan Lyts	0.08 s	Python 2	2020-10-10 21:33:34
10	Lars Åström	0.09 s	Python 2	2019-10-03 14:27:49

#	User	Runtime	Language	Date
1	Magnus Hokland Hegdahl	0.06 s	Python 3	2023-03-13 04:37:58
2	Phu Huynh Le An	0.06 s	Python 3	2024-12-10 03:23:12
3	Petr	0.06 s	Python 3	2024-12-14 20:36:51
4	ava lasto	0.06 s	Python 3	2025-04-22 20:40:38
5	Adrian Borup	0.07 s	Python 3	2023-02-07 19:09:04
6	Lars Sogn Lismoen	0.07 s	Python 3	2023-03-15 19:19:58
7	Chrisanna Cornish	0.07 s	Python 3	2023-06-05 15:32:51
8	Javier París	0.07 s	Python 3	2023-11-23 14:44:46
9	Raymond Christopher	0.07 s	Python 3	2023-12-20 16:54:41
10	Niklas Schmiedel	0.07 s	Python 3	2024-11-13 11:13:49

#	User	Runtime	Language	Date
1	Thomas Feld	0.48 s	Ruby	2023-03-02 15:41:12

#	User	Runtime	Language	Date
1	Jonathan Jiang	0.00 s	Rust	2021-04-14 17:05:22
2	Vincent Lagerros	0.00 s	Rust	2025-03-06 13:46:50
3	Daniel Liland	0.01 s	Rust	2023-04-12 12:53:34
4	David Rasch	0.01 s	Rust	2024-02-14 11:45:51
5	Chris Seager	0.01 s	Rust	2025-03-26 14:23:07
6	Kasper Jønsson	0.01 s	Rust	2026-02-03 11:12:06
7	Chaoyi Yin	0.02 s	Rust	2019-02-17 20:56:13
8	Chen Weikang	0.02 s	Rust	2019-02-17 21:36:36
9	Bas Dirks	0.02 s	Rust	2022-02-15 09:57:14
10	Andreas Just Petersen	0.02 s	Rust	2023-02-13 15:37:28

#	User	Runtime	Language	Date
1	Dut A.	0.02 s	Swift	2024-01-29 07:15:55

#	User	Length	Language	Date
1	Mikael K Eriksson	445	C	2021-10-21 21:46:59
2	Unai Hernández Minaberry	469	C	2020-07-29 03:53:23
3	Jack Gurdin	499	C	2023-11-01 06:34:19
4	Gabriel Stanculescu	515	C	2025-06-16 22:20:34
5	Thoriq afif habibi	635	C	2023-11-05 00:15:58
6	Harti Hamza	639	C	2024-02-20 08:44:23
7	Hidden user	697	C	2020-03-22 14:27:25
8	pengin	752	C	2021-06-01 13:03:50
9	Hidden user	771	C	2020-09-28 02:54:00
10	Mirel Cosulschi	834	C	2025-04-01 22:47:11

#	User	Length	Language	Date
1	Evan Miller	1059	C#	2025-10-23 16:22:21
2	Michael Damsgaard	1069	C#	2024-12-24 10:54:14
3	Hidden user	1133	C#	2022-02-08 13:55:16
4	Hidden user	1241	C#	2024-02-19 17:41:49
5	Abdellatif Elyoussefy	1326	C#	2020-05-24 21:33:38
6	Akshay Patel	1777	C#	2020-09-29 00:40:08
7	Yousef Almutairi	2276	C#	2020-09-30 06:09:56
8	Louis Rivera	4121	C#	2020-09-25 14:30:58

#	User	Length	Language	Date
1	Hidden user	381	C++	2021-01-27 14:34:37
2	Hidden user	389	C++	2021-01-28 00:57:05
3	Mugeon Kim	394	C++	2024-03-28 05:26:24
4	Johan Wind	395	C++	2018-05-08 22:00:55
5	Jakov	400	C++	2024-10-16 13:13:16
6	Roger Chen	404	C++	2021-08-29 16:39:47
7	THE TRUTH	405	C++	2021-09-26 21:16:47
8	yc	405	C++	2023-02-14 13:02:00
9	Derek Snellman	409	C++	2021-09-28 04:44:49
10	Evan Michael Bailey	413	C++	2023-09-02 19:49:53

#	User	Length	Language	Date
1	Hidden user	395	Common Lisp	2019-07-25 04:16:26

#	User	Length	Language	Date
1	Christopher	894	Dart	2023-11-07 19:01:51

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1279	F#	2023-02-26 13:22:38
2	Nicklas Østerberg	2795	F#	2025-02-07 14:26:34

#	User	Length	Language	Date
1	Jonas Mittnacht	834	Go	2024-02-20 20:15:01
2	Norbert Voelker	902	Go	2021-09-11 23:51:27

#	User	Length	Language	Date
1	Dan Greco	517	Haskell	2025-09-17 20:24:56
2	Hidden user	728	Haskell	2023-01-05 21:38:39
3	Ola Berglund	912	Haskell	2023-11-15 19:58:23
4	Trinh Hoang Anh	929	Haskell	2017-08-26 10:03:33
5	Johan Meier	941	Haskell	2016-12-17 11:14:05
6	Steinar Simonnes	1192	Haskell	2025-10-12 12:16:25

#	User	Length	Language	Date
1	Muhammad Saleem	487	Java	2020-09-30 04:15:09
2	Yousuf A. Kazmi	514	Java	2020-09-30 04:25:02
3	Ahmed Kazmi	553	Java	2020-09-30 04:52:10
4	Furqanmajeed	590	Java	2020-09-30 04:42:33
5	Riley Richardson	637	Java	2025-04-11 18:27:09
6	Declan Jones	649	Java	2021-10-06 05:59:14
7	Manuel Carrilo	651	Java	2019-02-24 23:18:34
8	Ellie Van De Graaff	685	Java	2019-10-22 03:33:45
9	Le Huu Trinh Kha	746	Java	2023-11-16 01:16:52
10	Paul Boddington	754	Java	2017-01-04 01:17:46

#	User	Length	Language	Date
1	William Jackson	908	JavaScript (Node.js)	2019-02-22 23:04:00

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	634	JavaScript (SpiderMonkey)	2023-05-01 13:00:44
2	Bjørn Chr. Soltvedt	865	JavaScript (SpiderMonkey)	2016-11-10 23:27:50
3	Christopher Walther	887	JavaScript (SpiderMonkey)	2021-04-23 15:52:06
4	Geir Magne Karlsen	2934	JavaScript (SpiderMonkey)	2017-01-16 21:33:13

#	User	Length	Language	Date
1	Hidden user	206	Julia	2025-03-02 18:27:09
2	Timothy Gaede	1508	Julia	2024-04-23 08:53:57

#	User	Length	Language	Date
1	Adam Koprowski	706	Kotlin	2020-11-23 21:50:05
2	Ali M. Nekoh	750	Kotlin	2025-05-22 10:26:44
3	Johnny Baloney	867	Kotlin	2022-02-17 18:02:36
4	Ioannis Karras	929	Kotlin	2025-03-29 13:35:48
5	Chris Johnson	964	Kotlin	2025-04-05 03:09:52
6	Phường Lên	1023	Kotlin	2020-08-25 17:08:56
7	Adam Rankin	1053	Kotlin	2023-05-09 21:26:40
8	Leonard Alexander Blechschmidt	1140	Kotlin	2021-11-22 18:54:03

#	User	Length	Language	Date
1	William Fiset	800	Objective-C	2016-08-02 00:13:48

#	User	Length	Language	Date
1	Unai Hernández Minaberry	576	OCaml	2020-07-29 05:31:52

#	User	Length	Language	Date
1	Ingemar Ragnemalm	948	Pascal	2020-01-04 23:21:54

#	User	Length	Language	Date
1	Andreas Björklund	284	Python 2	2020-10-25 07:53:20
2	Johan Lyts	355	Python 2	2020-10-10 21:33:34
3	Hermon Mulat	358	Python 2	2019-01-15 22:30:08
4	Lars Åström	370	Python 2	2019-10-03 14:27:49
5	Maj Stenmark	370	Python 2	2019-10-03 19:36:32
6	Måns Magnusson	370	Python 2	2019-10-03 20:28:14
7	jano gjoshi	375	Python 2	2020-09-29 19:54:23
8	Justin Zhang	375	Python 2	2020-09-29 23:38:04
9	Michael Kotwica	375	Python 2	2020-09-30 17:43:39
10	Hang Zhao	375	Python 2	2021-01-24 12:40:46

#	User	Length	Language	Date
1	Nikolaj Munk Binder Jensen	130	Python 3	2025-02-05 21:59:45
2	Michael Goldwasser	154	Python 3	2025-09-04 17:00:20
3	Robin Ask Rohr Halberg	181	Python 3	2024-02-07 21:27:53
4	Peter Stauder	189	Python 3	2022-10-21 16:52:19
5	Thibault Raffaillac	198	Python 3	2021-04-26 15:39:13
6	Nikolaus Engh	204	Python 3	2023-05-25 17:19:02
7	Hidden user	205	Python 3	2023-06-22 23:53:46
8	Christian Lebeda	209	Python 3	2021-02-19 21:25:55
9	Simon Andersen	210	Python 3	2023-03-15 11:30:18
10	Snorre Håland	223	Python 3	2023-05-25 17:12:58

#	User	Length	Language	Date
1	Thomas Feld	95	Ruby	2023-03-02 15:42:52

#	User	Length	Language	Date
1	David Rasch	778	Rust	2024-02-14 11:45:51
2	Vincent Lagerros	810	Rust	2025-03-06 13:24:07
3	Daniel Liland	829	Rust	2023-04-12 12:51:41
4	Otakar Hirs	885	Rust	2023-04-09 00:29:46
5	Malthe Mathias Mølgaard Larsen	1232	Rust	2023-02-11 15:33:47
6	Andreas Just Petersen	1256	Rust	2023-02-13 15:37:28
7	Kasper Jønsson	1282	Rust	2026-02-03 11:12:06
8	Eric Pinter	1356	Rust	2021-11-19 00:20:36
9	Chris Seager	1374	Rust	2025-03-26 14:23:07
10	Rolf Martin Glomsrud	1611	Rust	2023-04-08 02:36:39

#	User	Length	Language	Date
1	Dut A.	1078	Swift	2024-01-29 07:15:55

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