Problem A
Climbing Worm — Problem Statistics

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Submissions	7967
Accepted submissions	2338
Submission ratio	29.35%
Authors	2082
Accepted authors	1839
Author ratio	88.33%

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	APL	2023-04-26 09:46:38

#	User	Runtime	Language	Date
1	Thomas Feld	0.01 s	Bash	2023-09-26 18:51:20
2	Chenzhang Hu	0.01 s	Bash	2023-10-04 09:20:37

#	User	Runtime	Language	Date
1	Liam Mislej	0.02 s	C#	2020-08-10 19:21:41
2	Yuwono Bangun Nagoro	0.02 s	C#	2020-10-17 22:44:17
3	Sebastian Sternberg	0.02 s	C#	2021-02-26 16:22:01
4	Urban Ek	0.02 s	C#	2021-03-03 13:19:24
5	Mikael Fiala-Lundström	0.02 s	C#	2021-07-15 03:18:47
6	Nickolas Gupton	0.02 s	C#	2021-10-12 02:52:18
7	Ali Aliev	0.02 s	C#	2022-01-06 18:54:00
8	Göran Andersson	0.03 s	C#	2022-05-27 01:03:46
9	Գոռ Բաղդասարյան	0.04 s	C#	2024-08-10 10:57:59
10	Phillip Lindholm	0.04 s	C#	2025-04-20 15:37:55

#	User	Runtime	Language	Date
1	Brandon Mitchell	0.03 s	COBOL	2020-10-04 23:36:33

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2019-08-03 19:25:23

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2023-01-01 13:31:24
2	Nicklas Østerberg	0.08 s	F#	2025-03-14 13:02:24

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-07-18 00:47:12
2	Josh Willox	0.08 s	Go	2021-08-13 09:24:37
3	Jack Kryger Sørensen	0.08 s	Go	2021-11-04 09:55:13
4	澪人桐	0.08 s	Go	2022-03-30 10:39:25

#	User	Runtime	Language	Date
1	Mason Barnhill	0.00 s	Haskell	2023-04-11 05:40:18
2	Steinar Simonnes	0.00 s	Haskell	2023-11-02 22:17:51
3	Brent Yorgey	0.01 s	Haskell	2019-06-12 20:29:18
4	Aurélien Pepin	0.01 s	Haskell	2019-08-28 08:18:03
5	Emil Østergaard	0.01 s	Haskell	2020-09-28 14:29:32
6	Hidden user	0.01 s	Haskell	2021-06-01 18:36:40
7	Leslie Yip	0.01 s	Haskell	2022-09-22 12:20:29

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2024-12-13 15:34:32
2	CUX "INDIO" PRADA	0.04 s	Java	2025-02-03 10:42:50
3	Simon	0.04 s	Java	2025-03-19 13:51:03
4	Guangyi Zhou	0.04 s	Java	2025-05-12 05:15:32
5	Axel Nilsson	0.05 s	Java	2024-06-25 20:10:21
6	Jiayi Lee	0.06 s	Java	2020-05-15 02:48:05
7	Igor Trúchlik	0.06 s	Java	2020-06-15 19:55:50
8	Jannik We	0.06 s	Java	2020-06-21 16:58:02
9	Nathan Nguyen	0.06 s	Java	2020-07-08 20:22:46
10	Corey Cullen	0.06 s	Java	2020-07-13 00:57:09

#	User	Runtime	Language	Date
1	Will Cosley	0.04 s	JavaScript (Node.js)	2025-04-08 01:30:06
2	Nagireddy Yannam	0.05 s	JavaScript (Node.js)	2023-12-06 03:14:51
3	Harsha vardhan reddy Nallabolu	0.05 s	JavaScript (Node.js)	2023-12-06 03:32:37
4	Peter Kedemo	0.41 s	JavaScript (Node.js)	2019-12-22 20:35:43
5	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-05 19:26:23

#	User	Runtime	Language	Date
1	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-20 13:02:28
2	Preeti Mainali	0.02 s	JavaScript (SpiderMonkey)	2023-12-01 03:30:23
3	Dan Roberts	0.02 s	JavaScript (SpiderMonkey)	2023-12-04 19:53:39
4	Leul Abate	0.02 s	JavaScript (SpiderMonkey)	2023-12-06 05:10:15
5	Tewobsta Desta	0.02 s	JavaScript (SpiderMonkey)	2023-12-06 05:11:22
6	Hanan Mustofa	0.02 s	JavaScript (SpiderMonkey)	2023-12-06 05:37:57
7	Trey	0.02 s	JavaScript (SpiderMonkey)	2023-12-09 08:00:22
8	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2019-06-13 11:55:20

#	User	Runtime	Language	Date
1	Timothy Gaede	0.49 s	Julia	2024-04-17 14:46:41

#	User	Runtime	Language	Date
1	Phường Lên	0.17 s	Kotlin	2019-11-01 04:34:36
2	Adam Rankin	0.18 s	Kotlin	2023-05-11 06:14:54
3	Zaw Myat	0.19 s	Kotlin	2024-01-15 04:59:35
4	Hidden user	0.21 s	Kotlin	2020-02-06 02:31:40

#	User	Runtime	Language	Date
1	Zeheng Li	0.01 s	Lua	2023-11-29 10:20:44

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2019-07-08 11:08:17

#	User	Runtime	Language	Date
1	Connor Billings	0.01 s	PHP	2020-08-10 02:29:59
2	Renate	0.01 s	PHP	2021-07-15 03:02:19

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2024-03-03 15:06:13

#	User	Runtime	Language	Date
1	Godmar Back	0.03 s	Python 2	2019-06-11 21:24:26
2	Andreas Björklund	0.03 s	Python 2	2019-06-13 19:50:35
3	Johan Lyts	0.03 s	Python 2	2019-06-16 22:01:41
4	Aarav Singh	0.03 s	Python 2	2019-06-25 08:33:10
5	Hidden user	0.03 s	Python 2	2019-08-02 15:01:15
6	Thomas Feld	0.03 s	Python 2	2019-09-27 10:45:14
7	Jesper Öqvist	0.03 s	Python 2	2019-09-29 13:27:04
8	Ram Basnet	0.03 s	Python 2	2019-12-06 07:06:26
9	Yanmarshus Bachtiar	0.03 s	Python 2	2020-08-22 08:30:52
10	Björn Magnusson	0.03 s	Python 2	2020-09-04 17:45:37

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.02 s	Python 3	2019-06-12 10:05:47
2	Jakob Kallestad	0.02 s	Python 3	2019-06-22 00:00:53
3	Isaac Lee	0.02 s	Python 3	2019-07-16 18:15:03
4	Fei Dong	0.02 s	Python 3	2019-07-27 18:14:27
5	Hugo Alayrangues	0.02 s	Python 3	2019-07-30 22:26:13
6	pythonista kattonista	0.02 s	Python 3	2019-09-07 20:54:29
7	James Elson	0.02 s	Python 3	2019-09-16 12:58:58
8	lazy guy	0.02 s	Python 3	2019-09-19 13:49:32
9	Kristoffer Åhgren	0.02 s	Python 3	2019-09-24 13:12:14
10	Jie Fan	0.02 s	Python 3	2019-10-08 16:09:30

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2020-08-17 04:19:43
2	Alexander Bilde Pedersen	0.05 s	Ruby	2023-03-17 23:07:09
3	Thomas Feld	0.06 s	Ruby	2023-01-04 12:52:27
4	Andreas Severin Hauch Trøstrup	0.06 s	Ruby	2023-03-21 22:01:01
5	Russell Ng	0.06 s	Ruby	2025-05-29 19:39:50

#	User	Runtime	Language	Date
1	Adam Gausmann	0.00 s	Rust	2019-09-13 20:57:28
2	David Rasch	0.00 s	Rust	2020-10-07 12:37:33
3	Bas Dirks	0.00 s	Rust	2022-01-12 16:55:44
4	Artur Khuziakhmetov	0.00 s	Rust	2022-08-07 10:35:41
5	Albert Rise Nielsen	0.00 s	Rust	2023-03-14 12:02:15
6	Malthe Mathias Mølgaard Larsen	0.00 s	Rust	2023-03-14 12:21:41
7	Philip Mørch	0.00 s	Rust	2024-03-26 22:50:28
8	Hidden user	0.00 s	Rust	2024-07-29 05:25:09
9	Egor Kulikov	0.00 s	Rust	2025-02-05 13:47:39
10	Andreas Wendelboe	0.00 s	Rust	2025-03-28 18:52:12

#	User	Length	Language	Date
1	Thomas Feld	37	APL	2023-04-26 09:46:38

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-06-18 18:57:27
2	Thomas Feld	13	Bash	2023-09-26 18:53:16

#	User	Length	Language	Date
1	度雨	163	C	2025-03-06 14:38:20
2	Charlot DEDJINOU	179	C	2022-03-27 18:19:19
3	Coleton Kotch	201	C	2020-10-05 00:11:58
4	Hidden user	215	C	2020-08-11 15:57:57
5	Sauparna Palchowdhury	225	C	2020-10-08 17:56:33
6	Gabriel Stanculescu	236	C	2025-03-18 14:14:55
7	Alexander Bilde Pedersen	251	C	2023-03-17 22:53:01
8	Andrew Roberts	260	C	2019-06-26 18:18:13
9	Jeffrey Micono	270	C	2021-09-09 19:56:18
10	Alicia Tay	271	C	2020-08-13 06:05:42

#	User	Length	Language	Date
1	Göran Andersson	507	C#	2022-05-27 01:03:46
2	Rafael Steffen Nguyen Jensen	524	C#	2025-04-26 09:56:18
3	Գոռ Բաղդասարյան	563	C#	2024-08-10 10:57:59
4	Ali Aliev	583	C#	2022-01-06 18:54:00
5	Liam Mislej	599	C#	2020-08-10 19:21:41
6	Mikael Fiala-Lundström	629	C#	2021-07-15 03:18:47
7	Umar Rasyid	649	C#	2025-06-01 00:50:50
8	Yuwono Bangun Nagoro	710	C#	2020-10-17 22:44:17
9	Urban Ek	744	C#	2021-03-03 13:19:24
10	Nickolas Gupton	920	C#	2021-10-12 02:52:18

#	User	Length	Language	Date
1	Tyler Fernando	114	C++	2022-11-03 12:16:48
2	Chen Irene	152	C++	2023-06-20 13:31:48
3	蔡易霖	152	C++	2023-06-20 13:43:37
4	Alan Bright	155	C++	2024-07-30 01:31:34
5	Eason	156	C++	2024-08-29 09:28:38
6	Jalvin Chan Jia Xiang	160	C++	2020-01-08 20:58:30
7	Steven Gay	161	C++	2021-03-17 18:36:57
8	Sherman Chann Zhi Shen	161	C++	2021-05-28 15:37:55
9	張寧栩	162	C++	2025-06-10 15:01:28
10	nian	167	C++	2022-10-16 09:53:58

#	User	Length	Language	Date
1	Brandon Mitchell	853	COBOL	2020-10-04 23:36:33

#	User	Length	Language	Date
1	Hidden user	258	Common Lisp	2019-08-03 19:25:23

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	293	F#	2023-01-01 13:31:24
2	Nicklas Østerberg	2095	F#	2025-03-14 13:03:45

#	User	Length	Language	Date
1	Jack Kryger Sørensen	271	Go	2021-11-04 09:55:13
2	Josh Willox	290	Go	2021-08-13 09:24:37
3	澪人桐	487	Go	2022-03-30 10:39:25
4	Norbert Voelker	627	Go	2021-07-18 00:47:12

#	User	Length	Language	Date
1	Steinar Simonnes	188	Haskell	2023-11-02 22:19:09
2	Emil Østergaard	280	Haskell	2020-09-28 14:29:32
3	Leslie Yip	345	Haskell	2022-09-22 12:20:29
4	Mason Barnhill	375	Haskell	2023-04-11 05:40:18
5	Brent Yorgey	463	Haskell	2019-06-12 20:29:18
6	Aurélien Pepin	605	Haskell	2019-08-28 08:18:03
7	Hidden user	11432	Haskell	2021-06-01 18:36:40

#	User	Length	Language	Date
1	David Nicholas Nielsen	198	Java	2023-12-15 16:30:48
2	Rasmus Poulsen	203	Java	2023-10-30 10:36:07
3	Anders Georg Frølich Hansen	207	Java	2023-10-27 21:10:25
4	David Au Wei En	330	Java	2020-09-11 03:55:21
5	Åke Wettergren	335	Java	2020-03-12 16:02:08
6	Hidden user	356	Java	2019-06-14 05:53:41
7	Paula Arnold	360	Java	2020-09-22 15:56:17
8	Sam Huynh	366	Java	2021-08-12 13:17:04
9	Malashree Dhungel	375	Java	2023-04-24 23:24:02
10	Thanh Le	382	Java	2022-12-24 03:13:37

#	User	Length	Language	Date
1	Will Cosley	258	JavaScript (Node.js)	2025-04-08 01:30:06
2	Peter Kedemo	417	JavaScript (Node.js)	2019-12-22 20:35:43
3	Nagireddy Yannam	596	JavaScript (Node.js)	2023-12-06 03:14:51
4	Harsha vardhan reddy Nallabolu	635	JavaScript (Node.js)	2023-12-06 03:32:37
5	Howard Tin Chi Chan	739	JavaScript (Node.js)	2021-02-05 19:26:23

#	User	Length	Language	Date
1	Christian Cederquist	66	JavaScript (SpiderMonkey)	2023-01-20 13:06:28
2	Bjørn Chr. Soltvedt	171	JavaScript (SpiderMonkey)	2019-06-13 11:55:20
3	Preeti Mainali	260	JavaScript (SpiderMonkey)	2023-12-01 03:30:23
4	Hanan Mustofa	350	JavaScript (SpiderMonkey)	2023-12-06 05:39:10
5	Dan Roberts	376	JavaScript (SpiderMonkey)	2023-12-04 19:53:39
6	Tewobsta Desta	378	JavaScript (SpiderMonkey)	2023-12-06 05:11:22
7	Leul Abate	443	JavaScript (SpiderMonkey)	2023-12-06 05:10:15
8	Trey	445	JavaScript (SpiderMonkey)	2023-12-09 08:00:22

#	User	Length	Language	Date
1	Timothy Gaede	653	Julia	2024-04-17 14:46:41

#	User	Length	Language	Date
1	Phường Lên	293	Kotlin	2019-11-01 04:34:36
2	Adam Rankin	441	Kotlin	2023-05-11 06:14:54
3	Hidden user	470	Kotlin	2020-02-06 02:31:40
4	Zaw Myat	556	Kotlin	2024-01-15 04:59:35

#	User	Length	Language	Date
1	Zeheng Li	130	Lua	2023-11-29 10:20:44

#	User	Length	Language	Date
1	Ingemar Ragnemalm	465	Pascal	2019-07-08 11:08:17

#	User	Length	Language	Date
1	Renate	210	PHP	2021-07-15 03:02:19
2	Connor Billings	229	PHP	2020-08-10 02:29:59

#	User	Length	Language	Date
1	Andriy Zyevakov	583	Prolog	2024-03-03 15:06:13

#	User	Length	Language	Date
1	Thomas Feld	63	Python 2	2019-09-27 10:45:14
2	Jesper Öqvist	68	Python 2	2019-09-29 13:27:04
3	Andreas Björklund	84	Python 2	2019-06-13 19:50:35
4	Lars Åström	93	Python 2	2019-10-09 17:07:50
5	Björn Magnusson	117	Python 2	2020-09-04 17:45:37
6	Johan Lyts	161	Python 2	2019-06-16 22:01:41
7	Aarav Singh	166	Python 2	2019-06-25 08:33:10
8	Hidden user	182	Python 2	2019-08-02 15:01:15
9	Godmar Back	194	Python 2	2019-06-11 21:24:26
10	Yanmarshus Bachtiar	220	Python 2	2020-08-22 08:30:52

#	User	Length	Language	Date
1	Benjamin Z White	60	Python 3	2023-05-07 18:59:52
2	Clement Oh	60	Python 3	2023-06-03 18:58:03
3	Nguyên Khôi Đỗ	61	Python 3	2025-03-12 03:42:41
4	Ahmed Chamseddine	64	Python 3	2023-07-10 16:22:05
5	Morten Clausen	67	Python 3	2022-10-09 22:50:46
6	Andreas Just Petersen	67	Python 3	2023-03-14 15:04:22
7	Christian Lebeda	69	Python 3	2021-04-06 16:26:45
8	Tai Tze Kin	70	Python 3	2024-05-03 18:53:19
9	Enrique Casillas	85	Python 3	2019-10-16 20:20:41
10	Steven Wang	85	Python 3	2023-03-14 14:50:10

#	User	Length	Language	Date
1	Thomas Feld	45	Ruby	2023-08-29 12:50:05
2	Russell Ng	55	Ruby	2025-05-29 19:39:50
3	Alexander Bilde Pedersen	57	Ruby	2023-03-17 23:07:09
4	Andreas Severin Hauch Trøstrup	78	Ruby	2023-03-21 22:08:07
5	Hidden user	104	Ruby	2020-08-17 04:19:43

#	User	Length	Language	Date
1	Bas Dirks	487	Rust	2022-01-12 16:55:44
2	David Rasch	529	Rust	2020-10-07 12:37:33
3	Albert Rise Nielsen	601	Rust	2023-03-14 12:02:15
4	Hidden user	607	Rust	2024-07-29 05:25:09
5	Malthe Mathias Mølgaard Larsen	613	Rust	2023-03-14 12:21:41
6	Artur Khuziakhmetov	658	Rust	2022-08-07 10:35:41
7	Adam Gausmann	666	Rust	2019-09-13 20:57:28
8	Andreas Wendelboe	754	Rust	2025-03-28 18:52:12
9	Philip Mørch	773	Rust	2024-03-26 22:50:28
10	Egor Kulikov	21139	Rust	2025-02-05 13:47:39

Solution running time distribution