Problem B
Soylent — Problem Statistics

Back to problem description

Submissions	12293
Accepted submissions	5317
Submission ratio	43.25%
Authors	5205
Accepted authors	4865
Author ratio	93.47%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-09-12 07:56:31
2	Frans Meulenbroeks	0.02 s	Bash	2025-02-26 18:47:29
3	Chenzhang Hu	0.06 s	Bash	2023-09-08 17:25:09
4	Thomas Feld	0.06 s	Bash	2023-09-27 14:47:07

#	User	Runtime	Language	Date
1	Ugnius Skučas	0.02 s	C#	2016-10-15 22:16:13
2	Mesut Ekici	0.02 s	C#	2016-10-16 20:19:33
3	Jonathan Walker	0.02 s	C#	2016-10-18 19:38:34
4	Duelene Olson	0.02 s	C#	2016-10-20 05:36:18
5	Jonas Olsson	0.02 s	C#	2016-10-23 01:18:50
6	Benita Clarissa	0.02 s	C#	2016-10-29 16:10:10
7	Efraim Sutopo	0.02 s	C#	2016-11-03 06:37:04
8	Chikara Sho	0.02 s	C#	2016-11-03 06:50:58
9	Jasen Aprian Putra	0.02 s	C#	2016-11-09 10:26:26
10	Kevin Hadinata	0.02 s	C#	2016-11-11 02:44:24

#	User	Runtime	Language	Date
1	Brandon Mitchell	0.01 s	COBOL	2020-04-10 07:04:27
2	Francisco Romero	0.01 s	COBOL	2022-01-18 00:23:48

#	User	Runtime	Language	Date
1	Jakob Israelsen	0.04 s	F#	2020-02-07 16:06:15
2	Patrick Bahr	0.04 s	F#	2021-02-14 22:39:14
3	Sebastian Sternberg	0.04 s	F#	2021-08-25 17:45:02
4	Jacob Harris Cryer Kragh	0.04 s	F#	2022-07-12 18:15:41

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	Go	2018-10-06 14:07:59
2	Alejandro Germain	0.02 s	Go	2018-10-08 12:38:04
3	Krzysztof Gibuła	0.02 s	Go	2019-02-25 19:21:20
4	Norbert Voelker	0.02 s	Go	2021-04-11 22:24:24
5	Péter Szakszon	0.02 s	Go	2022-01-13 16:17:16
6	Thanatad Songpetchmongkol	0.03 s	Go	2019-06-15 18:56:29
7	Wu Huijie	0.03 s	Go	2019-07-23 14:31:32
8	Scott Dauer	0.03 s	Go	2020-04-12 22:08:39
9	Sander Hellesø	0.07 s	Go	2019-04-13 08:29:15
10	Eric Martin	0.08 s	Go	2018-12-30 00:28:01

#	User	Runtime	Language	Date
1	Lee Heng Sheng	0.05 s	Java	2024-04-28 11:11:19
2	Nick Wu	0.06 s	Java	2016-10-15 20:05:31
3	Daniel Dastoor	0.06 s	Java	2016-10-15 20:09:41
4	Javier Ojeda	0.06 s	Java	2016-10-15 20:12:48
5	Andrei Buiza	0.06 s	Java	2016-10-15 21:55:07
6	Martijn Muijsers	0.06 s	Java	2016-10-15 22:35:41
7	Hidden user	0.06 s	Java	2016-10-15 23:22:40
8	Hidden user	0.06 s	Java	2016-10-16 15:34:35
9	Lozzi Ali	0.06 s	Java	2016-10-17 20:56:52
10	Erik Baalhuis	0.06 s	Java	2016-10-20 15:44:19

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	JavaScript (Node.js)	2024-09-04 23:28:04
2	Gabriel Ainsworth	0.07 s	JavaScript (Node.js)	2019-06-02 10:19:01
3	Hidden user	0.40 s	JavaScript (Node.js)	2019-07-10 12:11:58
4	Indra Santosa	0.41 s	JavaScript (Node.js)	2019-07-25 21:06:44
5	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-07 14:51:11
6	Gert Lenaerts	0.43 s	JavaScript (Node.js)	2020-04-16 19:46:56
7	Howard Tin Chi Chan	0.43 s	JavaScript (Node.js)	2021-02-01 12:49:10
8	Chris Wong	0.43 s	JavaScript (Node.js)	2021-02-06 01:06:30
9	MaxAbillion	0.43 s	JavaScript (Node.js)	2021-05-05 15:29:33
10	Dag Hjelm	0.43 s	JavaScript (Node.js)	2021-05-11 15:35:29

#	User	Runtime	Language	Date
1	J M	0.01 s	JavaScript (SpiderMonkey)	2016-10-16 03:25:10
2	Hamza Waqas	0.01 s	JavaScript (SpiderMonkey)	2016-10-18 18:47:04
3	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-10-18 22:35:13
4	Peter Kedemo	0.01 s	JavaScript (SpiderMonkey)	2016-10-19 18:25:17
5	Tor Nordqvist	0.01 s	JavaScript (SpiderMonkey)	2016-10-31 14:48:25
6	Geir Magne Karlsen	0.01 s	JavaScript (SpiderMonkey)	2017-01-19 14:16:03
7	Davíð Helgason	0.01 s	JavaScript (SpiderMonkey)	2017-08-10 15:06:22
8	Peter Menyes	0.01 s	JavaScript (SpiderMonkey)	2017-08-15 20:54:34
9	Nicklas Utgaard	0.01 s	JavaScript (SpiderMonkey)	2017-12-26 14:55:57
10	Robin Livesey	0.01 s	JavaScript (SpiderMonkey)	2018-04-17 14:15:37

#	User	Runtime	Language	Date
1	Danny Robinson	0.50 s	Julia	2023-06-21 17:01:25
2	Timothy Gaede	0.60 s	Julia	2024-03-26 05:33:03

#	User	Runtime	Language	Date
1	Jacob Huebner	0.15 s	Kotlin	2020-03-17 05:51:47
2	Dmitry Shostak	0.19 s	Kotlin	2018-08-18 16:09:42
3	Merih Bora Poçan	0.22 s	Kotlin	2020-07-31 17:52:10
4	Dayan Ruben Gonzalez	0.22 s	Kotlin	2020-09-27 22:05:27
5	Sarek Høverstad Skotåm	0.22 s	Kotlin	2020-10-11 21:44:26
6	Adam Rankin	0.22 s	Kotlin	2023-04-23 22:07:05
7	Zaw Myat	0.22 s	Kotlin	2024-01-05 22:08:38
8	Magnus Tønnessen	0.23 s	Kotlin	2021-11-20 16:58:09
9	Stephen Atwood	0.23 s	Kotlin	2024-08-30 00:22:24
10	Cheatahh	0.24 s	Kotlin	2025-04-09 09:40:17

#	User	Runtime	Language	Date
1	Fredrik Eriksson	0.00 s	OCaml	2024-10-24 20:34:28

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2017-08-21 12:42:00
2	Egor Shchetinin	0.00 s	Pascal	2017-12-19 18:11:46
3	Vova Podkorytov	0.00 s	Pascal	2017-12-19 18:13:15
4	林達炘4D20 Lam Tat Yan	0.00 s	Pascal	2020-02-14 07:58:20
5	Khoa Ngo Duc Minh	0.00 s	Pascal	2021-10-06 02:35:30

#	User	Runtime	Language	Date
1	Steven D. Wilson	0.01 s	PHP	2016-11-17 03:07:39
2	Ali Pandidan	0.01 s	PHP	2017-02-01 00:18:20
3	Anderson Palmeira	0.01 s	PHP	2018-05-04 19:46:00
4	Mats Løvstrand Berntsen	0.01 s	PHP	2018-08-23 13:38:04
5	Jonas Lindenskov Nielsen	0.01 s	PHP	2019-10-08 10:36:38
6	Petr Trofimov	0.01 s	PHP	2021-04-20 09:35:48
7	Renate	0.01 s	PHP	2021-04-22 16:08:21
8	Andre Wahyudi	0.01 s	PHP	2023-03-15 04:48:51

#	User	Runtime	Language	Date
1	Hadi Qovaizi	0.02 s	Prolog	2016-10-30 05:24:23
2	Andriy Zyevakov	0.02 s	Prolog	2018-03-28 20:24:40
3	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-06 08:20:31

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-07-27 07:50:54
2	Ted Morin	0.03 s	Python 2	2016-10-15 20:26:41
3	Christofer Ohlsson	0.03 s	Python 2	2016-10-15 20:44:03
4	Siri Dovner	0.03 s	Python 2	2016-10-16 16:28:29
5	Maksym Bendeberia	0.03 s	Python 2	2016-10-20 14:30:33
6	Frederik Højholt	0.03 s	Python 2	2016-10-29 18:16:51
7	Syafiq Al Atiiq	0.03 s	Python 2	2016-11-13 10:20:37
8	Miguel Alfageme Sanchez	0.03 s	Python 2	2017-02-01 23:44:36
9	Sala Gabriel	0.03 s	Python 2	2017-03-07 17:16:11
10	Kevin Cain	0.03 s	Python 2	2017-03-17 07:25:17

#	User	Runtime	Language	Date
1	Jeff Robertson	0.02 s	Python 3	2016-10-15 20:07:13
2	Swaraj Dhumne	0.02 s	Python 3	2016-10-15 20:09:51
3	Victor Zheng	0.02 s	Python 3	2016-10-15 20:12:37
4	Christian Lindeström	0.02 s	Python 3	2016-10-15 20:12:51
5	Jan Clarin	0.02 s	Python 3	2016-10-15 20:15:40
6	Joel De La Cruz	0.02 s	Python 3	2016-10-15 20:16:41
7	Teresa Van	0.02 s	Python 3	2016-10-15 20:18:02
8	Jack Baumann	0.02 s	Python 3	2016-10-15 20:22:51
9	Andrew Burton	0.02 s	Python 3	2016-10-15 20:28:13
10	Grace Lan	0.02 s	Python 3	2016-10-15 20:37:52

#	User	Runtime	Language	Date
1	Kellen Watt	0.03 s	Ruby	2016-10-17 22:18:21
2	Mehdi Maick	0.03 s	Ruby	2017-04-14 17:12:39
3	Christopher Bishop	0.03 s	Ruby	2017-09-11 19:13:44
4	Paul Vinell	0.04 s	Ruby	2018-04-21 13:34:17
5	Jason Cheong-Kee-You	0.04 s	Ruby	2018-05-29 05:04:07
6	Laurent Voisin	0.04 s	Ruby	2019-08-02 23:00:01
7	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-09-14 14:58:59
8	Olivia Bednar	0.04 s	Ruby	2019-11-13 21:15:52
9	Nicholas Lantz	0.05 s	Ruby	2018-07-04 00:14:48
10	Abolfazl Gol	0.05 s	Ruby	2018-07-29 11:36:51

#	User	Runtime	Language	Date
1	Aung Khant Myat	0.04 s	Visual Basic	2024-02-14 10:04:27
2	Kaungzin hein	0.04 s	Visual Basic	2024-02-14 10:18:14
3	Min khant Kyaw	0.04 s	Visual Basic	2024-02-14 10:23:03

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-02-03 15:29:10
2	Thomas Feld	13	Bash	2023-09-27 14:47:32
3	Frans Meulenbroeks	17	Bash	2025-03-09 10:10:27
4	Danny Robinson	39	Bash	2023-09-12 07:56:31

#	User	Length	Language	Date
1	Martin Blom	83	C	2024-02-15 15:26:38
2	Wesley Stephanak	153	C	2019-02-04 04:55:07
3	Kotla Uday Kumar Naidu	168	C	2018-12-16 08:22:15
4	Ang Ray Yan	169	C	2016-12-13 07:04:10
5	Ehsan Shoja	170	C	2018-06-28 17:06:53
6	Stefan Kennedy	173	C	2017-03-15 12:08:38
7	Anton Haglund	174	C	2016-11-18 16:35:48
8	Emil Wihlander	177	C	2020-11-28 20:57:20
9	Ariezel Bautista	180	C	2024-05-10 22:06:25
10	潘治均	182	C	2023-10-29 06:43:10

#	User	Length	Language	Date
1	Andreas Hansson	211	C#	2019-03-07 08:49:54
2	Klas af Geijerstam	241	C#	2017-04-10 15:07:17
3	Michael Damsgaard	275	C#	2025-01-04 05:38:37
4	Kunwei Zhang	276	C#	2018-02-06 05:44:00
5	Bin Huang	285	C#	2019-09-06 22:18:51
6	Marcus Elg	297	C#	2020-02-02 10:05:47
7	Göran Andersson	297	C#	2022-05-09 22:54:05
8	Fernanda Ferrer Ortega	308	C#	2023-03-23 03:38:24
9	李陆屿	310	C#	2019-05-06 15:02:25
10	Lucía María Alvarez Sánchez	317	C#	2023-05-24 21:33:54

#	User	Length	Language	Date
1	Frans Meulenbroeks	91	C++	2025-02-26 18:48:54
2	Tyler Fernando	111	C++	2022-11-02 07:50:23
3	a_b__c	127	C++	2021-08-17 20:39:45
4	Richard Putra	142	C++	2017-11-21 03:39:58
5	蔡童彥	143	C++	2024-10-27 09:43:32
6	黃太陽	148	C++	2022-02-25 19:20:29
7	Yeung Man Tsung	152	C++	2022-11-18 11:54:20
8	李冠逸	152	C++	2024-10-28 17:53:36
9	Đăng Khoa Trần	153	C++	2019-09-01 14:52:37
10	Budi Arbenta	157	C++	2017-01-26 14:49:08

#	User	Length	Language	Date
1	Brandon Mitchell	696	COBOL	2020-04-10 07:04:27
2	Francisco Romero	801	COBOL	2022-01-18 00:23:48

#	User	Length	Language	Date
1	Sebastian Sternberg	269	F#	2021-08-25 17:47:48
2	Jacob Harris Cryer Kragh	329	F#	2022-07-12 18:15:41
3	Jakob Israelsen	368	F#	2020-02-07 16:06:15
4	Patrick Bahr	1817	F#	2021-02-14 22:39:14

#	User	Length	Language	Date
1	Thomas Mailund	158	Go	2020-11-24 04:31:11
2	Nyamdavaa Amar	183	Go	2022-04-21 05:10:31
3	Wojtek Bednarzak	208	Go	2018-05-01 00:10:00
4	Hidden user	212	Go	2018-10-06 14:07:59
5	Steven Core	220	Go	2017-03-22 01:08:37
6	Scott Dauer	225	Go	2020-04-12 22:08:39
7	Yuwono Bangun Nagoro	251	Go	2016-10-17 07:44:47
8	Thomas Janzing	251	Go	2017-01-12 20:14:40
9	Eric Martin	305	Go	2018-12-30 00:28:01
10	Krzysztof Gibuła	312	Go	2019-02-25 19:21:20

#	User	Length	Language	Date
1	BlackcapCoder	80	Haskell	2019-05-01 21:03:56
2	Steinar Simonnes	92	Haskell	2024-01-23 16:58:02
3	Christian Leipe	94	Haskell	2017-01-30 17:58:56
4	Øyvind Almli	97	Haskell	2021-09-13 21:22:17
5	Freek van Keulen	111	Haskell	2021-02-13 14:24:58
6	Sebastian Banert	117	Haskell	2023-10-23 14:47:04
7	Hidden user	141	Haskell	2019-08-12 20:58:05
8	Hidden user	159	Haskell	2018-10-06 13:56:15
9	Aaron Lengyel	163	Haskell	2021-11-26 23:54:47
10	Andrew Mark Allen	170	Haskell	2017-02-10 03:42:05

#	User	Length	Language	Date
1	Rasmus Poulsen	205	Java	2023-11-09 16:07:15
2	Nanda Thant Sin	247	Java	2018-05-09 04:20:14
3	Hidden user	251	Java	2016-11-18 00:12:11
4	Ruiming Xiong	259	Java	2016-10-15 20:23:32
5	Daniel West	261	Java	2018-01-31 16:47:38
6	Eric Leow Yu Quan	263	Java	2020-12-25 08:25:54
7	Raymond Arrington	264	Java	2024-06-17 09:20:19
8	Ali Pervaiz	265	Java	2019-03-19 20:35:26
9	Simon Boerwinkle	268	Java	2016-10-15 20:14:54
10	Brennan Cleland	269	Java	2022-10-18 05:08:02

#	User	Length	Language	Date
1	Indra Santosa	183	JavaScript (Node.js)	2019-07-25 21:26:23
2	Karim Dridi	206	JavaScript (Node.js)	2022-01-15 00:39:11
3	Dag Hjelm	276	JavaScript (Node.js)	2021-05-11 15:35:29
4	Gabriel Ainsworth	314	JavaScript (Node.js)	2019-06-02 10:19:01
5	Howard Tin Chi Chan	396	JavaScript (Node.js)	2021-02-01 12:49:10
6	Chris Wong	411	JavaScript (Node.js)	2021-02-06 01:06:30
7	Khin Nyunt	494	JavaScript (Node.js)	2021-12-06 14:29:39
8	MaxAbillion	495	JavaScript (Node.js)	2021-05-05 15:29:33
9	Hidden user	510	JavaScript (Node.js)	2019-07-10 12:11:58
10	Hovhannes Kantuni	539	JavaScript (Node.js)	2020-09-05 23:48:19

#	User	Length	Language	Date
1	Christian Cederquist	50	JavaScript (SpiderMonkey)	2023-01-13 00:40:03
2	Jimmy Gustafsson	53	JavaScript (SpiderMonkey)	2024-07-05 21:47:26
3	Evan Magill	72	JavaScript (SpiderMonkey)	2024-04-22 03:18:44
4	Nguyễn Hùng Cường	78	JavaScript (SpiderMonkey)	2018-09-03 12:39:01
5	Peter Kedemo	112	JavaScript (SpiderMonkey)	2016-10-19 18:25:17
6	Peter Menyes	115	JavaScript (SpiderMonkey)	2017-08-15 20:54:34
7	Bjørn Chr. Soltvedt	116	JavaScript (SpiderMonkey)	2016-10-18 22:35:13
8	Tor Nordqvist	116	JavaScript (SpiderMonkey)	2016-10-31 14:48:25
9	J M	117	JavaScript (SpiderMonkey)	2016-10-16 03:25:10
10	Casey Smith	118	JavaScript (SpiderMonkey)	2019-05-30 23:06:34

#	User	Length	Language	Date
1	Danny Robinson	56	Julia	2023-09-12 07:49:23
2	Timothy Gaede	549	Julia	2024-03-26 05:33:03

#	User	Length	Language	Date
1	Cheatahh	157	Kotlin	2025-04-09 09:40:17
2	Magnus Tønnessen	160	Kotlin	2021-11-20 16:58:09
3	Stephen Atwood	162	Kotlin	2024-08-30 00:22:24
4	axl	162	Kotlin	2019-08-02 08:19:44
5	Sarek Høverstad Skotåm	166	Kotlin	2020-10-11 21:44:26
6	Dmitry Shostak	201	Kotlin	2018-08-18 16:09:42
7	Dayan Ruben Gonzalez	235	Kotlin	2020-09-27 22:05:27
8	Chris Johnson	236	Kotlin	2025-01-29 22:58:42
9	Merih Bora Poçan	325	Kotlin	2020-07-31 17:52:10
10	Zaw Myat	386	Kotlin	2024-01-05 22:08:38

#	User	Length	Language	Date
1	Fredrik Eriksson	294	OCaml	2024-10-24 20:34:28

#	User	Length	Language	Date
1	Egor Shchetinin	188	Pascal	2017-12-19 18:11:46
2	David Connolly	192	Pascal	2017-08-21 12:42:00
3	Vova Podkorytov	202	Pascal	2017-12-19 18:13:15
4	Khoa Ngo Duc Minh	206	Pascal	2021-10-06 02:35:30
5	林達炘4D20 Lam Tat Yan	210	Pascal	2020-02-14 07:58:20

#	User	Length	Language	Date
1	Anderson Palmeira	141	PHP	2018-05-04 19:46:00
2	Steven D. Wilson	158	PHP	2016-11-17 03:07:39
3	Jonas Lindenskov Nielsen	167	PHP	2019-10-08 10:36:38
4	Ali Pandidan	192	PHP	2017-02-01 00:18:20
5	Mats Løvstrand Berntsen	202	PHP	2018-08-23 13:38:04
6	Petr Trofimov	227	PHP	2021-04-20 09:35:48
7	Renate	239	PHP	2021-04-22 16:08:21
8	Andre Wahyudi	402	PHP	2023-03-15 04:48:51

#	User	Length	Language	Date
1	Hakan Kjellerstrand	219	Prolog	2023-02-06 08:24:51
2	Andriy Zyevakov	231	Prolog	2018-03-28 20:24:40
3	Hadi Qovaizi	6672	Prolog	2016-10-30 05:24:23

#	User	Length	Language	Date
1	Hugo Morvan	48	Python 2	2023-03-07 01:23:14
2	Lars Åström	54	Python 2	2018-10-04 18:52:49
3	Thomas Feld	66	Python 2	2019-08-19 12:52:35
4	Alex Dai	67	Python 2	2017-11-29 11:09:21
5	Karen Mkrtumyan	71	Python 2	2017-03-14 21:22:12
6	Andreas Björklund	78	Python 2	2019-05-16 20:26:48
7	Meher Béjaoui	80	Python 2	2017-09-27 20:18:15
8	Hubert Teo	87	Python 2	2017-02-16 20:09:14
9	Jesper Öqvist	87	Python 2	2018-10-20 14:32:51
10	Hidden user	89	Python 2	2018-12-11 16:47:52

#	User	Length	Language	Date
1	Morten Clausen	45	Python 3	2022-10-04 16:07:57
2	Benjamin Z White	45	Python 3	2023-04-21 19:55:08
3	Clement Oh	45	Python 3	2023-05-07 22:44:18
4	Hidden user	47	Python 3	2023-07-04 17:55:55
5	Hugo Morvan	50	Python 3	2023-03-03 18:17:34
6	Guk Yi Siong	50	Python 3	2023-06-14 12:30:06
7	Adam Levav	53	Python 3	2023-01-25 01:19:31
8	Thomas Draper	53	Python 3	2023-08-15 22:02:02
9	Tai Tze Kin	53	Python 3	2024-05-01 21:37:53
10	David Aldenbro	54	Python 3	15:48:45

#	User	Length	Language	Date
1	Thomas Feld	25	Ruby	2022-12-21 14:51:59
2	Gustav Elmqvist	37	Ruby	2023-03-22 00:49:40
3	Kellen Watt	42	Ruby	2016-10-17 22:18:21
4	Abolfazl Gol	49	Ruby	2018-07-29 11:38:38
5	Hidden user	50	Ruby	2019-02-18 15:44:52
6	Régis Hanol	52	Ruby	2022-01-12 22:44:55
7	Tavin Turner	60	Ruby	2019-04-13 01:41:21
8	Hidden user	82	Ruby	2018-10-06 13:47:27
9	Eugen Neagoe	83	Ruby	2023-04-08 19:50:34
10	Nicholas Lantz	85	Ruby	2018-07-04 00:14:48

#	User	Length	Language	Date
1	Vincent Lagerros	135	Rust	2024-12-04 00:01:01
2	Bas Dirks	270	Rust	2021-12-31 22:24:59
3	David Rasch	337	Rust	2021-03-15 12:46:47
4	Freek van Keulen	342	Rust	2022-12-08 07:31:58
5	Joe Blower	356	Rust	2025-06-15 18:30:30
6	Hidden user	357	Rust	2018-11-05 13:24:37
7	Kok Dith	387	Rust	2021-08-05 11:50:06
8	Artur Khuziakhmetov	413	Rust	2022-07-15 11:08:43
9	Hidden user	430	Rust	2023-04-10 23:36:53
10	Pankajkumar Patro	431	Rust	2024-08-12 16:32:36

#	User	Length	Language	Date
1	Min khant Kyaw	423	Visual Basic	2024-02-14 10:23:03
2	Aung Khant Myat	452	Visual Basic	2024-02-14 10:04:27
3	Kaungzin hein	16154	Visual Basic	2024-02-14 10:18:14

Solution running time distribution