Problem A
Is Y a Vowel? — Problem Statistics

Back to problem description

Submissions	8874
Accepted submissions	4413
Submission ratio	49.73%
Authors	4073
Full solves [?]	3936
Full solve Ratio	96.64%

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	Ada	2024-10-10 18:02:22

#	User	Runtime	Language	Date
1	Viken Manoukian	0.01 s	APL	2024-01-31 19:13:31
2	Oisín Mac Fhearaí	0.01 s	APL	2024-09-05 15:29:53
3	Edson Alves	0.01 s	APL	2025-01-06 18:40:52
4	Matzuka	0.01 s	APL	2025-02-24 10:04:48
5	Arvid Jonasson	0.01 s	APL	2025-06-11 00:17:39

#	User	Runtime	Language	Date
1	Frans Meulenbroeks	0.01 s	Bash	2024-08-22 16:24:22
2	Andrew Barth	0.01 s	Bash	2024-09-12 06:23:56
3	Chenzhang Hu	0.01 s	Bash	2025-09-12 20:45:29

#	User	Runtime	Language	Date
1	Naz	0.03 s	C#	2024-03-11 21:12:25
2	George Tabet	0.03 s	C#	2024-07-08 00:25:57
3	Nikolaos Prevenios	0.04 s	C#	2024-01-28 15:35:13
4	NAGULAPALLI VENKATA SATYA NAVEEN	0.04 s	C#	2024-01-29 21:30:05
5	Sano Gharzani	0.04 s	C#	2024-02-02 18:22:36
6	Benjamin Bilbeau	0.04 s	C#	2024-02-05 17:48:06
7	Abhiram Reddy Chada	0.04 s	C#	2024-02-10 23:55:50
8	Chaitanya Sai Kunapareddy	0.04 s	C#	2024-02-11 06:41:36
9	Saurabh Verma	0.04 s	C#	2024-02-11 15:29:07
10	Amolika Godse	0.04 s	C#	2024-02-11 19:15:03

#	User	Runtime	Language	Date
1	Jacky Blois	0.00 s	COBOL	2024-05-29 16:02:23

#	User	Runtime	Language	Date
1	yraten	0.01 s	Common Lisp	2024-04-07 20:41:57
2	Norvell Spearman	0.03 s	Common Lisp	2024-12-18 19:57:00

#	User	Runtime	Language	Date
1	Hidden user	0.53 s	Elixir	2024-09-12 13:44:48

#	User	Runtime	Language	Date
1	Magnus Baasch Langkilde	0.06 s	F#	2025-02-26 09:05:59
2	Stefan Schmiedl	0.07 s	F#	2024-08-23 01:47:57
3	Hidden user	0.07 s	F#	2024-12-10 05:44:22

#	User	Runtime	Language	Date
1	Gideon Zimmerman	0.00 s	Fortran	2025-02-27 02:36:10

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2024-11-09 17:39:20
2	Lee Heng Sheng	0.05 s	Java	2024-04-13 12:03:05
3	Hussin Suleiman	0.05 s	Java	2024-05-16 14:54:20
4	Yeongwoong Choi	0.06 s	Java	2023-09-30 20:08:19
5	Issa Issack	0.06 s	Java	2024-01-29 14:29:13
6	Julius Griebel	0.06 s	Java	2024-02-03 13:52:09
7	Ku Brian	0.06 s	Java	2024-04-27 16:04:54
8	Adeline Greene	0.06 s	Java	2024-09-27 06:09:00
9	Jimmy Bao	0.06 s	Java	2024-10-05 05:47:23
10	Ojas Polakhare	0.06 s	Java	2024-11-02 18:10:00

#	User	Runtime	Language	Date
1	Amir Konjkav	0.04 s	JavaScript (Node.js)	2024-09-24 08:14:36
2	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-24 08:53:56
3	Hidden user	0.04 s	JavaScript (Node.js)	2024-09-27 07:01:56
4	Santosh pant	0.04 s	JavaScript (Node.js)	2024-11-06 22:12:04
5	Shuja Waraich	0.04 s	JavaScript (Node.js)	2024-11-06 22:19:20
6	Aidan Mcurtrie	0.04 s	JavaScript (Node.js)	2024-11-06 22:32:19
7	Akbota	0.04 s	JavaScript (Node.js)	2024-11-06 22:38:43
8	Nima Dema	0.04 s	JavaScript (Node.js)	2025-02-21 07:06:45
9	Kuenzang Dema	0.04 s	JavaScript (Node.js)	2025-02-24 11:02:19
10	Uttam Sharma	0.04 s	JavaScript (Node.js)	2025-02-24 11:04:28

#	User	Runtime	Language	Date
1	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2024-01-28 02:07:03
2	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2024-01-28 10:01:43
3	Simon Titkó	0.02 s	JavaScript (SpiderMonkey)	2024-02-15 14:11:27
4	Dylan	0.02 s	JavaScript (SpiderMonkey)	2024-03-27 01:26:47
5	Hidden user	0.02 s	JavaScript (SpiderMonkey)	2024-03-27 19:02:12
6	Hidden user	0.02 s	JavaScript (SpiderMonkey)	2024-03-27 22:59:09
7	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-05-30 00:39:19
8	PWP Zenith	0.02 s	JavaScript (SpiderMonkey)	2024-09-19 15:50:20
9	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2025-01-24 20:20:09
10	Quoc Anh Khoa Nguyen	0.02 s	JavaScript (SpiderMonkey)	2025-01-24 20:21:30

#	User	Runtime	Language	Date
1	Timothy Gaede	0.46 s	Julia	2024-03-16 06:59:37
2	Danny Robinson	0.49 s	Julia	2024-02-10 01:54:30

#	User	Runtime	Language	Date
1	Zaw Myat	0.18 s	Kotlin	2024-01-31 21:20:53
2	Aditya Bhagavatula	0.18 s	Kotlin	2024-03-04 00:35:09
3	Troy Warmboe	0.18 s	Kotlin	2024-04-05 22:58:20
4	Anna Valdez	0.18 s	Kotlin	2024-05-17 02:48:01
5	Sam Keyser	0.19 s	Kotlin	2023-09-30 20:09:11
6	Stephen Atwood	0.19 s	Kotlin	2024-03-14 17:01:10
7	Cassandra Cabrera	0.19 s	Kotlin	2024-03-18 18:11:02
8	Emil Wihlander	0.19 s	Kotlin	2024-07-16 00:30:36
9	Josue Bruno Tarqui Villacorta	0.20 s	Kotlin	2024-02-04 04:21:32
10	Adam Rankin	0.20 s	Kotlin	2024-05-05 03:43:13

#	User	Runtime	Language	Date
1	Jacky Blois	0.00 s	Lua	2024-05-29 16:18:33
2	Matthew Farshad	0.00 s	Lua	2025-02-07 21:23:24
3	Jason Yu	0.00 s	Lua	2025-09-11 21:21:17

#	User	Runtime	Language	Date
1	Artemis Ngoh	0.00 s	OCaml	2024-03-03 13:44:27
2	Sebastian Banert	0.00 s	OCaml	2024-07-18 09:48:50
3	Hidden user	0.00 s	OCaml	2024-09-14 21:44:29
4	Hidden user	0.00 s	OCaml	2025-07-13 09:26:17

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.09 s	Octave	2024-01-28 11:51:12

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	Odin	2025-04-20 03:54:50

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2024-01-30 18:13:50
2	Ingemar Ragnemalm	0.00 s	Pascal	2024-02-08 11:51:58
3	Lucka Heric	0.00 s	Pascal	2025-01-26 15:55:22

#	User	Runtime	Language	Date
1	Saito Ta	0.00 s	Perl	2024-03-27 09:13:27
2	J Sotomayor	0.00 s	Perl	2025-04-13 20:41:53

#	User	Runtime	Language	Date
1	Susanne Ragnemalm	0.01 s	PHP	2024-03-24 22:00:26
2	Renate	0.01 s	PHP	2024-04-06 23:17:49
3	Timothy Carlson	0.01 s	PHP	2024-12-06 08:36:10
4	Mitchell Kallman	0.01 s	PHP	2025-02-27 01:32:00

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2025-03-25 21:00:45

#	User	Runtime	Language	Date
1	Johan Lyts	0.03 s	Python 2	2024-01-29 20:58:04
2	Sivasankaran D	0.07 s	Python 2	2025-08-01 14:35:33

#	User	Runtime	Language	Date
1	Neil Rahman	0.04 s	Python 3	2023-09-30 20:02:29
2	Brandon Young	0.04 s	Python 3	2023-09-30 20:28:19
3	Lawrence Prophete	0.04 s	Python 3	2023-10-01 00:48:50
4	Logan Pipes	0.04 s	Python 3	2023-10-03 01:50:52
5	Evan Schock	0.04 s	Python 3	2023-10-04 22:12:15
6	Pranathi Cheemarla	0.04 s	Python 3	2024-02-10 21:13:11
7	nikita gill	0.04 s	Python 3	2024-02-10 23:39:18
8	Mark Fuller	0.04 s	Python 3	2024-02-27 21:50:31
9	Gaston Navarro	0.04 s	Python 3	2024-08-28 06:19:16
10	vincent exelcio	0.04 s	Python 3	2024-08-28 09:04:54

#	User	Runtime	Language	Date
1	Angus Gibson	0.28 s	Racket	2025-07-14 06:12:30

#	User	Runtime	Language	Date
1	Miorel Palii	0.06 s	Ruby	2024-01-28 09:17:29
2	Thomas Feld	0.06 s	Ruby	2024-01-31 12:27:33
3	Noah Hessen Bjerke	0.06 s	Ruby	2024-04-19 17:13:04
4	Russell Ng	0.06 s	Ruby	2024-08-15 11:57:46
5	Alexander Bilde Pedersen	0.06 s	Ruby	2025-03-21 16:17:15
6	Clement Oh	0.07 s	Ruby	2024-03-20 18:20:48
7	Frederik Petersen	0.07 s	Ruby	2024-03-26 20:31:38
8	Sander Oppen	0.07 s	Ruby	2024-04-19 20:05:08

#	User	Runtime	Language	Date
1	AZm87	0.00 s	Swift	2024-04-08 18:48:02
2	Jevania	0.00 s	Swift	2024-04-24 16:06:39

#	User	Runtime	Language	Date
1	Thomas Withaar	0.04 s	TypeScript	2024-08-19 13:33:21

#	User	Runtime	Language	Date
1	Krishan Leong	0.04 s	Visual Basic	2024-02-13 23:26:53
2	Min khant Kyaw	0.04 s	Visual Basic	2024-03-08 18:46:05

#	User	Length	Language	Date
1	Sebastian Banert	450	Ada	2024-10-10 18:02:22

#	User	Length	Language	Date
1	Oisín Mac Fhearaí	43	APL	2024-09-05 15:29:53
2	Matzuka	46	APL	2025-02-24 10:04:48
3	Arvid Jonasson	53	APL	2025-06-11 00:17:39
4	Viken Manoukian	54	APL	2024-01-31 19:13:31
5	Edson Alves	55	APL	2025-01-06 18:40:52

#	User	Length	Language	Date
1	Chenzhang Hu	39	Bash	2025-09-12 20:45:29
2	Frans Meulenbroeks	76	Bash	2024-08-22 16:24:22
3	Andrew Barth	395	Bash	2024-09-12 06:23:56

#	User	Length	Language	Date
1	Martin Blom	138	C	2024-02-02 11:26:14
2	Mason Anderson	277	C	2024-09-30 19:28:00
3	Roemer Caliboso	281	C	2024-09-04 13:02:03
4	Hidden user	297	C	2024-03-10 15:06:43
5	Adil Ismayilov	308	C	2024-01-27 20:17:33
6	Hidden user	312	C	2024-12-01 16:38:30
7	JAYASREE S	315	C	2025-05-01 13:36:23
8	Hidden user	328	C	2024-09-21 21:05:52
9	MADHAN A	328	C	2025-04-16 10:44:02
10	Hidden user	331	C	2024-09-27 15:51:57

#	User	Length	Language	Date
1	traxex	191	C#	2024-03-25 12:22:01
2	Pontus Magnusson	312	C#	2024-03-26 22:07:08
3	Deci Bel	358	C#	2024-06-12 07:55:52
4	Esty Crow	362	C#	2024-12-13 14:07:35
5	Chaitanya Sai Kunapareddy	475	C#	2024-02-11 06:41:36
6	Sano Gharzani	492	C#	2024-02-02 18:22:36
7	Aman Choudhary	515	C#	2025-04-10 11:00:16
8	Mohan Ananta Venkata Pavan Gamidi	518	C#	2024-02-11 20:52:03
9	Ronny Severiche Mariaca	519	C#	2025-05-29 01:02:10
10	Nikhil Alla	524	C#	2024-02-11 20:27:29

#	User	Length	Language	Date
1	Ahmad Abdulaal	131	C++	2024-02-24 23:40:40
2	Frederik Vase	167	C++	2024-05-26 18:57:05
3	Kerk Tai Heng	228	C++	2025-01-04 08:32:12
4	Mathias Gernez	237	C++	2025-02-21 15:11:36
5	Jason Liu	241	C++	2024-03-05 17:56:46
6	Jesús Pacheco Alonso	242	C++	2024-01-29 20:28:02
7	Irawan	242	C++	2025-07-10 04:16:45
8	Grae Yeandle	243	C++	2024-01-29 15:18:32
9	Ernest Ng Zi Xuan	248	C++	2024-02-13 04:29:29
10	Ashutosh Nigam	249	C++	2025-05-20 11:07:12

#	User	Length	Language	Date
1	Jacky Blois	724	COBOL	2024-05-29 16:02:23

#	User	Length	Language	Date
1	yraten	458	Common Lisp	2024-04-07 20:41:57
2	Norvell Spearman	797	Common Lisp	2024-12-18 19:57:00

#	User	Length	Language	Date
1	Hidden user	701	Elixir	2024-09-12 13:44:48

#	User	Length	Language	Date
1	Stefan Schmiedl	299	F#	2024-08-23 01:47:57
2	Hidden user	478	F#	2024-12-10 05:44:22
3	Magnus Baasch Langkilde	618	F#	2025-02-26 09:05:59

#	User	Length	Language	Date
1	Gideon Zimmerman	788	Fortran	2025-02-27 02:36:10

#	User	Length	Language	Date
1	Aditya Putra Pratama	266	Go	2024-05-18 18:03:56
2	Alex Kohanim	284	Go	2024-05-23 01:17:29
3	Norbert Voelker	303	Go	2024-02-10 19:04:17
4	Diego Saldias	321	Go	2024-02-10 16:24:27
5	Mikkel C. B. Christensen	325	Go	2024-01-31 15:28:21
6	Philip Ritchey	334	Go	2025-04-13 19:08:45
7	Jimmy Nejtron	347	Go	2024-04-13 19:03:33
8	Depan Rumah	368	Go	2024-03-04 20:55:20
9	Abby Lorber	396	Go	2024-05-08 02:53:48
10	Nienna Ackerman	440	Go	2024-10-02 23:32:16

#	User	Length	Language	Date
1	Rudy Matela	86	Haskell	2024-03-17 16:06:02
2	Matthew Johnson	100	Haskell	2024-05-03 02:57:43
3	Juan Miguel Vilar	166	Haskell	2025-08-20 20:16:01
4	Elizabeth Doughty	171	Haskell	2024-02-05 07:54:04
5	Christopher Whelan	188	Haskell	2025-01-01 03:24:44
6	Miguel Roldán Muñoz	193	Haskell	2024-05-29 13:06:00
7	Ramesh baskaran	216	Haskell	2024-10-08 11:52:57
8	David Zacek	222	Haskell	2024-03-09 23:25:18
9	Hidden user	223	Haskell	2024-01-29 19:38:31
10	Hidden user	225	Haskell	2024-01-29 17:38:48

#	User	Length	Language	Date
1	Hidden user	259	Java	2024-09-14 23:19:20
2	John Hershey	266	Java	2024-02-01 19:35:43
3	Jaden Keller	294	Java	2025-09-10 00:36:38
4	Raymond Arrington	299	Java	2024-06-07 07:17:59
5	Nathan Nguyen	302	Java	2024-03-11 23:21:48
6	Thomas King	302	Java	2024-06-13 18:22:26
7	Rasmus Poulsen	304	Java	2024-02-06 14:19:20
8	David Paul	314	Java	2024-06-18 23:55:29
9	Justin Turner	333	Java	2024-07-22 17:18:35
10	Kurt Yjares	339	Java	2024-03-29 09:15:19

#	User	Length	Language	Date
1	Dawa Dawa	202	JavaScript (Node.js)	2025-02-24 11:23:06
2	Sonam Dorji	205	JavaScript (Node.js)	2025-02-24 11:14:04
3	Ugyen Dorji	221	JavaScript (Node.js)	2025-02-24 11:12:11
4	Dorji Choden	273	JavaScript (Node.js)	2025-02-24 11:21:39
5	Dorji Dema	274	JavaScript (Node.js)	2025-02-24 11:30:29
6	Pema Legzin Wangmo	274	JavaScript (Node.js)	2025-02-24 11:31:39
7	Kinley Pem	274	JavaScript (Node.js)	2025-02-24 11:33:13
8	Kuenzang Dorji	275	JavaScript (Node.js)	2025-02-24 11:10:22
9	Passang Tshering	300	JavaScript (Node.js)	2025-02-24 11:09:30
10	Tshering Yangden	319	JavaScript (Node.js)	2025-02-24 11:06:59

#	User	Length	Language	Date
1	Christian Cederquist	72	JavaScript (SpiderMonkey)	2024-01-28 02:16:36
2	Jimmy Gustafsson	90	JavaScript (SpiderMonkey)	2024-05-30 00:44:54
3	Bjørn Chr. Soltvedt	99	JavaScript (SpiderMonkey)	2024-01-28 10:30:57
4	Dylan	165	JavaScript (SpiderMonkey)	2024-03-27 01:26:47
5	Zach Tschetter	181	JavaScript (SpiderMonkey)	2025-01-24 20:21:09
6	Ben Armstrong	189	JavaScript (SpiderMonkey)	2025-06-27 07:03:06
7	Amina Pandey	195	JavaScript (SpiderMonkey)	2025-01-29 21:33:32
8	Hidden user	214	JavaScript (SpiderMonkey)	2024-03-27 19:02:12
9	Simon Titkó	261	JavaScript (SpiderMonkey)	2024-02-15 14:11:27
10	Quoc Anh Khoa Nguyen	291	JavaScript (SpiderMonkey)	2025-01-24 20:21:30

#	User	Length	Language	Date
1	Danny Robinson	71	Julia	2024-02-10 01:54:30
2	Timothy Gaede	301	Julia	2024-03-16 06:59:37

#	User	Length	Language	Date
1	Cheatahh	127	Kotlin	2025-04-09 08:47:25
2	Stephen Atwood	143	Kotlin	2024-03-14 17:01:10
3	Magnus Tønnessen	160	Kotlin	2024-08-01 22:29:26
4	Emil Wihlander	202	Kotlin	2024-07-16 00:30:36
5	Zaw Myat	273	Kotlin	2024-01-31 21:20:53
6	Sam Keyser	284	Kotlin	2023-09-30 20:09:11
7	Chris Johnson	306	Kotlin	2025-01-29 22:03:20
8	Josue Bruno Tarqui Villacorta	308	Kotlin	2024-02-04 04:21:32
9	Adam Rankin	326	Kotlin	2024-05-05 03:43:13
10	Troy Warmboe	334	Kotlin	2024-04-05 22:58:20

#	User	Length	Language	Date
1	Jacky Blois	245	Lua	2024-05-29 16:18:33
2	Jason Yu	314	Lua	2025-09-11 21:23:16
3	Matthew Farshad	347	Lua	2025-02-07 21:23:24

#	User	Length	Language	Date
1	Hidden user	312	OCaml	2024-09-14 21:44:29
2	Hidden user	328	OCaml	2025-07-13 09:26:17
3	Sebastian Banert	350	OCaml	2024-07-18 09:48:50
4	Artemis Ngoh	538	OCaml	2024-03-03 13:44:27

#	User	Length	Language	Date
1	Sven Rönnbäck	342	Octave	2024-01-28 11:51:12

#	User	Length	Language	Date
1	Hidden user	353	Odin	2025-04-20 03:54:50

#	User	Length	Language	Date
1	Ingemar Ragnemalm	274	Pascal	2024-02-08 11:51:58
2	David Connolly	443	Pascal	2024-01-30 18:13:50
3	Lucka Heric	554	Pascal	2025-01-26 15:55:22

#	User	Length	Language	Date
1	Saito Ta	35	Perl	2024-03-27 09:13:27
2	J Sotomayor	134	Perl	2025-04-13 20:41:53

#	User	Length	Language	Date
1	Susanne Ragnemalm	350	PHP	2024-03-24 22:00:26
2	Renate	352	PHP	2024-04-06 23:17:49
3	Timothy Carlson	537	PHP	2024-12-06 08:38:00
4	Mitchell Kallman	666	PHP	2025-02-27 01:32:00

#	User	Length	Language	Date
1	Andriy Zyevakov	1037	Prolog	2025-03-25 21:00:45

#	User	Length	Language	Date
1	Johan Lyts	140	Python 2	2024-01-29 20:58:04
2	Sivasankaran D	140	Python 2	2025-08-01 14:35:33

#	User	Length	Language	Date
1	Błażej Dariusz Roszkowski	53	Python 3	2024-04-02 12:54:57
2	August Femtehjell	53	Python 3	2024-04-19 17:48:07
3	Tolga Atam	55	Python 3	2024-11-04 01:53:30
4	Eric Sjölund	59	Python 3	2025-09-05 16:24:05
5	Sander Oppen	60	Python 3	2024-04-19 15:46:13
6	Edvard Walde Heimdal	60	Python 3	2024-04-19 16:57:23
7	Ahmad Abdulaal	61	Python 3	2024-02-25 00:11:02
8	Kevin Gomez	61	Python 3	2024-03-22 01:45:17
9	Jakob Rødal Skaar	61	Python 3	2024-08-05 17:47:39
10	Noah Hessen Bjerke	62	Python 3	2024-04-19 17:03:31

#	User	Length	Language	Date
1	Angus Gibson	345	Racket	2025-07-14 06:12:30

#	User	Length	Language	Date
1	Thomas Feld	38	Ruby	2024-01-31 12:27:33
2	Alexander Bilde Pedersen	41	Ruby	2024-01-29 13:13:54
3	Russell Ng	46	Ruby	2024-08-15 11:57:46
4	Clement Oh	51	Ruby	2024-03-20 18:20:48
5	Noah Hessen Bjerke	51	Ruby	2024-04-19 17:13:04
6	Sander Oppen	55	Ruby	2024-04-19 20:05:08
7	Miorel Palii	110	Ruby	2024-01-28 09:17:29
8	Frederik Petersen	110	Ruby	2024-03-26 20:31:38

#	User	Length	Language	Date
1	Vincent Lagerros	177	Rust	2024-09-11 17:56:26
2	Aza Maulana Hadi	262	Rust	2024-03-01 03:16:15
3	Emil Dichmann	347	Rust	2024-01-29 20:29:05
4	Will	362	Rust	2025-02-10 03:17:00
5	Pankajkumar Patro	368	Rust	2024-05-02 14:26:23
6	Setyo Nugroho	372	Rust	2024-02-14 15:33:43
7	David Zacek	378	Rust	2024-03-09 22:49:45
8	David Rasch	393	Rust	2024-01-29 10:05:45
9	Noah Yorgey	402	Rust	2025-01-30 21:36:38
10	Michal Žáček	428	Rust	2024-03-09 23:27:08

#	User	Length	Language	Date
1	AZm87	258	Swift	2024-04-08 18:48:02
2	Jevania	537	Swift	2024-04-24 16:06:39

#	User	Length	Language	Date
1	Thomas Withaar	635	TypeScript	2024-08-19 13:33:21

#	User	Length	Language	Date
1	Min khant Kyaw	662	Visual Basic	2024-03-08 18:46:05
2	Krishan Leong	987	Visual Basic	2024-02-13 23:26:53

Solution running time distribution