Problem A
Costume Contest — Problem Statistics

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Submissions	2981
Accepted submissions	1500
Submission ratio	50.32%
Authors	1446
Full solves [?]	1326
Full solve Ratio	91.70%

#	User	Runtime	Language	Date
1	Danny Robinson	0.01 s	Bash	2023-10-31 11:34:34

#	User	Runtime	Language	Date
1	Bergur Snorrason	0.00 s	C	2018-11-03 16:39:43
2	Sambit Palit	0.00 s	C	2020-09-16 20:46:46
3	PhilCampbell	0.00 s	C	2021-02-11 17:29:21
4	Thư Hà	0.00 s	C	2023-08-20 12:03:14
5	Julian Duniec	0.00 s	C	2023-10-11 15:08:40
6	Sami Al Chalati	0.00 s	C	2024-08-09 21:08:28
7	Mirel Cosulschi	0.00 s	C	2025-03-29 11:21:29
8	Naveen Kumar S	0.00 s	C	2025-04-19 12:36:31
9	Han Jiang	0.01 s	C	2019-09-06 18:45:12
10	Jacob Sutton	0.01 s	C	2021-01-01 01:51:27

#	User	Runtime	Language	Date
1	Hans Glimmerfors	0.03 s	C#	2018-11-02 18:24:27
2	Göran Vällfors	0.03 s	C#	2018-12-28 16:08:48
3	Alex Renfors	0.03 s	C#	2019-02-03 10:19:17
4	Andreas Nilsson	0.04 s	C#	2019-02-03 10:31:05
5	Emil Zaya	0.04 s	C#	2019-02-03 12:08:35
6	Henrik Hallbert	0.04 s	C#	2019-02-03 12:41:43
7	Marius Løkketangen	0.04 s	C#	2019-10-14 15:18:58
8	Sveinn Henrik Kristinsson	0.04 s	C#	2019-10-15 00:47:05
9	Thomas Norris	0.04 s	C#	2020-01-06 20:23:49
10	Yuwono Bangun Nagoro	0.04 s	C#	2020-08-19 00:19:14

#	User	Runtime	Language	Date
1	Dmytro Bihniak	0.01 s	Common Lisp	2019-09-18 14:10:20

#	User	Runtime	Language	Date
1	dick move	0.00 s	Crystal	2025-11-02 14:02:16

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-09-25 20:29:12
2	Hjalte Sorgenfrei Mac Dalland	0.07 s	F#	2020-10-30 17:19:42

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Go	2019-05-04 14:33:04
2	Henry Wang	0.05 s	Go	2020-01-14 06:20:33
3	Krzysztof Gibuła	0.07 s	Go	2019-01-14 18:49:52
4	Anna Winters	0.07 s	Go	2019-02-02 22:03:40
5	Johannes Larsson	0.07 s	Go	2019-05-12 14:19:04
6	Norbert Voelker	0.08 s	Go	2021-05-06 20:39:24
7	Eric Martin	0.09 s	Go	2018-12-31 01:05:41
8	Hannes Landeholm	0.10 s	Go	2018-11-02 18:50:34
9	Mik Achu	0.10 s	Go	2019-10-14 16:12:41

#	User	Runtime	Language	Date
1	Isaac Arvestad	0.00 s	Haskell	2018-11-02 18:14:50
2	Patrik Berggren	0.01 s	Haskell	2018-11-02 18:20:04
3	Brent Yorgey	0.01 s	Haskell	2018-11-04 06:22:36
4	Zach Tschetter	0.01 s	Haskell	2019-04-15 22:09:00
5	Christos Kontas	0.01 s	Haskell	2019-07-03 13:45:48
6	Aurélien Pepin	0.01 s	Haskell	2019-08-16 09:46:13
7	Hidden user	0.01 s	Haskell	2019-08-31 11:59:28
8	Intrets	0.01 s	Haskell	2019-09-06 19:54:29
9	Matthew Craven	0.01 s	Haskell	2020-04-06 02:12:07
10	Jonas Kastberg Hinrichsen	0.01 s	Haskell	2020-10-30 17:07:19

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.07 s	Java	2022-04-12 17:18:33
2	Lim Shao Qi	0.07 s	Java	2024-10-19 20:28:00
3	Martin Jakobsson	0.08 s	Java	2018-11-02 18:15:03
4	Ryan Tan	0.08 s	Java	2022-01-16 08:38:41
5	Mack Wong Yoong Yee	0.08 s	Java	2024-06-20 16:19:42
6	SUN JIAEN	0.08 s	Java	2024-10-31 15:01:49
7	Guk Yi Siong	0.08 s	Java	2024-11-17 09:26:11
8	Alan Ihre	0.09 s	Java	2018-11-02 19:02:40
9	Stela Palii	0.09 s	Java	2018-11-05 05:34:55
10	Kyle Kelly	0.09 s	Java	2018-11-06 10:28:42

#	User	Runtime	Language	Date
1	Carl Sundvall	0.06 s	JavaScript (Node.js)	2019-02-03 10:43:24
2	Gurpartap Singh Bhatti	0.06 s	JavaScript (Node.js)	2019-05-01 03:09:39
3	Levi Kuhaulua	0.06 s	JavaScript (Node.js)	2024-06-11 10:46:38
4	Sander Hellesø	0.08 s	JavaScript (Node.js)	2019-04-26 00:42:21
5	Ster Sar	0.10 s	JavaScript (Node.js)	2023-06-18 23:35:09
6	Angelou Konstantinos	0.10 s	JavaScript (Node.js)	2023-06-23 11:33:57
7	Chris Wong	0.43 s	JavaScript (Node.js)	2022-01-13 15:24:37
8	Jose Cervantes	0.44 s	JavaScript (Node.js)	2020-03-12 06:14:04
9	Rick van Rheenen	0.44 s	JavaScript (Node.js)	2020-03-31 11:08:08
10	Andoko Chandra	0.44 s	JavaScript (Node.js)	2020-10-24 20:42:51

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	JavaScript (SpiderMonkey)	2024-09-04 20:26:24
2	Ben Armstrong	0.02 s	JavaScript (SpiderMonkey)	2024-12-06 05:06:46
3	Nicklas Utgaard	0.03 s	JavaScript (SpiderMonkey)	2019-10-14 17:46:05
4	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-10-12 21:50:42
5	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2022-02-14 14:12:47
6	Håkan Lindahl	0.03 s	JavaScript (SpiderMonkey)	2022-06-17 13:43:30
7	Jimmy Gustafsson	0.03 s	JavaScript (SpiderMonkey)	2024-07-25 20:48:56
8	Bjørn Chr. Soltvedt	0.04 s	JavaScript (SpiderMonkey)	2018-11-03 10:45:29
9	Christian Pilegaard Cederquist	0.04 s	JavaScript (SpiderMonkey)	2023-01-18 15:37:36

#	User	Runtime	Language	Date
1	Timothy Gaede	0.59 s	Julia	2024-04-10 15:04:25

#	User	Runtime	Language	Date
1	Phường Lên	0.22 s	Kotlin	2020-02-14 05:49:55
2	Karl Johan Heimark	0.23 s	Kotlin	2024-01-25 21:13:36
3	Martijn Muijsers	0.23 s	Kotlin	2024-05-31 22:06:54
4	Hidden user	0.27 s	Kotlin	2019-11-30 04:10:34
5	Dayan Ruben Gonzalez	0.27 s	Kotlin	2020-10-08 04:55:33
6	Adam Rankin	0.27 s	Kotlin	2023-05-03 01:18:59
7	Benjamin Day	0.27 s	Kotlin	2024-11-09 21:48:20
8	Ola Sundell	0.28 s	Kotlin	2018-12-03 11:59:24
9	Marit van Dijk	0.28 s	Kotlin	2019-01-27 10:52:31
10	Thore Husfeldt	0.28 s	Kotlin	2020-10-27 16:52:31

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-11-20 22:04:31

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-19 00:14:05

#	User	Runtime	Language	Date
1	Måns Magnusson	0.03 s	Python 2	2018-11-02 18:05:15
2	Lars Åström	0.03 s	Python 2	2018-11-02 18:09:26
3	Johann Ly	0.03 s	Python 2	2018-11-04 00:18:24
4	Andrei Stoica	0.03 s	Python 2	2019-01-08 13:21:34
5	Oskar Larsson	0.03 s	Python 2	2019-04-10 18:21:55
6	Björn Magnusson	0.04 s	Python 2	2018-11-02 18:05:59
7	Hidden user	0.04 s	Python 2	2018-11-02 18:07:18
8	Hidden user	0.04 s	Python 2	2018-11-02 18:10:10
9	Maj Stenmark	0.04 s	Python 2	2018-11-02 18:10:37
10	Linus Karlsson	0.04 s	Python 2	2018-11-02 18:11:49

#	User	Runtime	Language	Date
1	Jonas Sunde Valfridsson	0.02 s	Python 3	2018-11-02 18:09:46
2	Dennis Magnusson	0.02 s	Python 3	2018-11-02 18:10:52
3	Jonatan Nilsson	0.02 s	Python 3	2018-11-02 18:10:56
4	Marcus Dicander	0.02 s	Python 3	2018-11-02 18:15:56
5	Christofer Ohlsson	0.02 s	Python 3	2018-11-02 18:18:00
6	mike	0.02 s	Python 3	2018-11-02 18:20:44
7	Damjan Polugic	0.02 s	Python 3	2018-11-02 18:29:55
8	Hidden user	0.02 s	Python 3	2018-11-02 20:00:59
9	Ram Basnet	0.02 s	Python 3	2018-11-03 07:07:53
10	Kasra Ghodsi	0.02 s	Python 3	2018-11-03 19:20:58

#	User	Runtime	Language	Date
1	Miorel Palii	0.05 s	Ruby	2018-11-04 00:33:47
2	Hidden user	0.05 s	Ruby	2019-02-16 20:51:10
3	Donald Dong	0.05 s	Ruby	2019-03-05 07:21:06
4	Kok Dith	0.05 s	Ruby	2021-08-22 15:33:16
5	Thomas Feld	0.06 s	Ruby	2023-03-15 10:10:57
6	Clement Oh	0.06 s	Ruby	2023-11-01 15:11:28
7	Jared Mulder	0.07 s	Ruby	2024-11-09 21:34:13
8	Rohan	0.07 s	Ruby	2025-05-04 14:46:52

#	User	Runtime	Language	Date
1	Bransford	0.04 s	TypeScript	00:51:46
2	Alexandra	0.05 s	TypeScript	2025-12-14 21:58:11

#	User	Length	Language	Date
1	Danny Robinson	56	Bash	2023-10-31 11:34:34

#	User	Length	Language	Date
1	Mirel Cosulschi	926	C	2025-03-29 11:21:29
2	Thư Hà	1405	C	2023-08-20 12:03:14
3	Jacob Sutton	1455	C	2021-01-01 01:51:27
4	Naveen Kumar S	1458	C	2025-04-19 12:36:31
5	Han Jiang	1495	C	2019-09-06 18:45:12
6	Sami Al Chalati	1624	C	2024-08-09 21:08:28
7	Julian Duniec	1961	C	2023-10-11 15:08:40
8	PhilCampbell	1979	C	2021-02-11 17:29:21
9	Sambit Palit	3106	C	2020-09-16 20:46:46
10	Bergur Snorrason	5274	C	2018-11-03 16:39:43

#	User	Length	Language	Date
1	traxex	344	C#	2024-05-27 08:22:21
2	Göran Andersson	651	C#	2022-05-17 00:10:24
3	Laine Groty	660	C#	2023-09-15 01:56:23
4	Marius Løkketangen	667	C#	2019-10-14 15:18:58
5	Jacob Harris Cryer Kragh	803	C#	2022-09-25 20:16:17
6	Josh Bryant	1003	C#	2023-11-08 00:03:03
7	Muskan Shrestha	1015	C#	2020-10-30 16:33:26
8	Emil Zaya	1020	C#	2019-02-03 12:08:35
9	Krzysztof Magda	1044	C#	2023-07-29 12:29:01
10	Sveinn Henrik Kristinsson	1067	C#	2019-10-15 00:47:05

#	User	Length	Language	Date
1	Taylor Rodríguez	192	C++	2025-01-18 18:20:21
2	Florian Cliquet	296	C++	2024-09-26 11:02:08
3	William Gan	307	C++	2018-12-06 15:42:20
4	Vladyslav Reznikov	339	C++	2024-02-10 17:45:20
5	Markus Mathiasen	341	C++	2021-10-05 20:59:12
6	Ernest Ng Zi Xuan	341	C++	2023-08-12 10:19:28
7	Rodrigo Erazo Hermosilla	350	C++	2021-02-20 22:20:31
8	Zane Yu	352	C++	2019-01-10 14:11:42
9	Hidden user	356	C++	2019-04-20 15:58:53
10	Tuan Pham	356	C++	2021-12-22 19:20:42

#	User	Length	Language	Date
1	Dmytro Bihniak	662	Common Lisp	2019-09-18 14:10:20

#	User	Length	Language	Date
1	dick move	178	Crystal	2025-11-02 14:02:16

#	User	Length	Language	Date
1	Hjalte Sorgenfrei Mac Dalland	437	F#	2020-10-30 17:19:42
2	Jacob Harris Cryer Kragh	626	F#	2022-09-25 20:29:12

#	User	Length	Language	Date
1	Henry Wang	540	Go	2020-01-14 06:20:33
2	Krzysztof Gibuła	578	Go	2019-01-14 18:49:52
3	Anna Winters	768	Go	2019-02-02 22:03:40
4	Johannes Larsson	771	Go	2019-05-12 14:19:04
5	Eric Martin	803	Go	2018-12-31 01:05:41
6	Mik Achu	807	Go	2019-10-14 16:12:41
7	Hannes Landeholm	837	Go	2018-11-02 18:50:34
8	Andriy Zyevakov	950	Go	2019-05-04 14:33:04
9	Norbert Voelker	1093	Go	2021-05-06 20:39:24

#	User	Length	Language	Date
1	Zach Tschetter	205	Haskell	2019-04-15 22:09:43
2	Matthew Craven	249	Haskell	2020-04-06 02:12:07
3	Intrets	258	Haskell	2019-11-09 16:02:04
4	Aurélien Pepin	350	Haskell	2019-08-16 09:46:13
5	Patrik Berggren	355	Haskell	2018-11-02 18:20:04
6	Isaac Arvestad	405	Haskell	2018-11-02 18:14:50
7	Jan Hrček	422	Haskell	2021-03-13 13:21:45
8	Christos Kontas	499	Haskell	2019-07-03 13:45:48
9	Steinar Simonnes	520	Haskell	2024-02-16 14:14:49
10	Jonas Kastberg Hinrichsen	542	Haskell	2020-10-30 17:07:19

#	User	Length	Language	Date
1	Lim Ting Kai	461	Java	2023-05-19 11:37:35
2	Jason Liu	552	Java	2023-05-26 17:20:09
3	Patrick Le	619	Java	2023-11-19 22:40:08
4	Thanh Le	626	Java	2023-01-02 04:18:31
5	Ann Chapple	637	Java	2020-07-31 20:16:42
6	John Ladera	640	Java	2019-01-15 19:03:32
7	Logan Christopher	645	Java	2021-09-27 23:29:41
8	Priyanka sreerama	662	Java	2021-04-08 02:44:27
9	Hidden user	665	Java	2020-10-31 16:57:52
10	Bowen Yang	665	Java	2021-10-07 04:01:39

#	User	Length	Language	Date
1	Peter Kedemo	572	JavaScript (Node.js)	2019-12-27 21:07:12
2	Carl Sundvall	673	JavaScript (Node.js)	2019-02-03 10:43:24
3	Tanner Wuster	728	JavaScript (Node.js)	2021-03-15 17:49:41
4	Ster Sar	728	JavaScript (Node.js)	2023-06-18 23:35:09
5	Rick van Rheenen	730	JavaScript (Node.js)	2020-03-31 11:08:08
6	Chris Wong	818	JavaScript (Node.js)	2022-01-13 15:24:37
7	Levi Kuhaulua	867	JavaScript (Node.js)	2024-06-11 10:46:38
8	Gurpartap Singh Bhatti	919	JavaScript (Node.js)	2019-05-01 03:09:39
9	Andoko Chandra	951	JavaScript (Node.js)	2020-10-24 20:42:51
10	Jose Cervantes	1070	JavaScript (Node.js)	2020-03-12 06:14:04

#	User	Length	Language	Date
1	Jimmy Gustafsson	197	JavaScript (SpiderMonkey)	2024-07-25 20:51:23
2	Zach Tschetter	249	JavaScript (SpiderMonkey)	2023-06-17 04:35:59
3	Christian Pilegaard Cederquist	271	JavaScript (SpiderMonkey)	2023-01-18 15:37:36
4	Peter Menyes	305	JavaScript (SpiderMonkey)	2021-10-12 21:50:42
5	Ben Armstrong	342	JavaScript (SpiderMonkey)	2024-12-06 05:06:46
6	Bjørn Chr. Soltvedt	441	JavaScript (SpiderMonkey)	2018-11-03 10:45:29
7	Håkan Lindahl	518	JavaScript (SpiderMonkey)	2022-06-17 13:43:30
8	Nicklas Utgaard	672	JavaScript (SpiderMonkey)	2019-10-14 17:46:05
9	Hidden user	924	JavaScript (SpiderMonkey)	2024-09-04 20:26:24

#	User	Length	Language	Date
1	Timothy Gaede	1123	Julia	2024-04-10 15:04:25

#	User	Length	Language	Date
1	Adam Rankin	263	Kotlin	2023-05-03 01:18:59
2	Thore Husfeldt	304	Kotlin	2020-10-27 20:01:53
3	Sergey Jakobsen	328	Kotlin	2021-06-13 14:32:27
4	Dayan Ruben Gonzalez	370	Kotlin	2020-10-08 04:55:33
5	Troy Warmboe	379	Kotlin	2020-02-12 02:07:49
6	Einar Kjellback	431	Kotlin	2019-12-18 12:15:02
7	Karl Johan Heimark	455	Kotlin	2024-01-25 21:13:36
8	Chris Johnson	480	Kotlin	2023-10-30 22:29:56
9	Benjamin Day	560	Kotlin	2024-11-09 21:48:20
10	Mike Poland	597	Kotlin	2019-01-31 18:06:56

#	User	Length	Language	Date
1	Ingemar Ragnemalm	11224	Pascal	2018-11-20 22:04:31

#	User	Length	Language	Date
1	Hakan Kjellerstrand	123	Prolog	2023-03-04 21:17:10

#	User	Length	Language	Date
1	Måns Magnusson	192	Python 2	2018-11-02 18:05:15
2	Rakesh Kumar	196	Python 2	2018-12-19 06:58:59
3	Thomas Feld	198	Python 2	2019-09-09 15:11:08
4	Johan Lyts	246	Python 2	2019-02-18 14:08:08
5	Lars Åström	264	Python 2	2018-11-02 18:09:26
6	Yanmarshus Bachtiar	271	Python 2	2020-08-18 13:57:41
7	Thore Husfeldt	278	Python 2	2018-11-03 10:24:54
8	Andreas Björklund	279	Python 2	2019-04-04 16:41:08
9	Jesper Öqvist	284	Python 2	2018-11-03 13:13:57
10	Björn Magnusson	289	Python 2	2018-11-02 18:05:59

#	User	Length	Language	Date
1	Clement Oh	99	Python 3	2023-07-16 20:22:10
2	Michael Goldwasser	124	Python 3	2023-11-09 00:28:41
3	Taylor Rodríguez	129	Python 3	2025-01-18 18:37:04
4	Ahmed Chamseddine	130	Python 3	2024-07-23 10:05:11
5	Rachel Krohn	133	Python 3	2025-03-21 23:32:46
6	Eduardo Vicente Petry	144	Python 3	2023-02-03 07:55:59
7	David Aldenbro	148	Python 3	2025-08-26 22:19:03
8	Hrant Hovhannisyan	150	Python 3	2025-05-02 08:46:27
9	Tai Tze Kin	152	Python 3	2024-05-05 22:08:11
10	Timothy Baeckelant	156	Python 3	2024-04-21 01:39:38

#	User	Length	Language	Date
1	Thomas Feld	62	Ruby	2023-03-15 10:11:32
2	Clement Oh	107	Ruby	2023-11-01 15:11:28
3	Donald Dong	158	Ruby	2019-03-05 07:21:06
4	Kok Dith	162	Ruby	2021-08-22 15:33:16
5	Miorel Palii	175	Ruby	2018-11-04 00:33:47
6	Hidden user	233	Ruby	2019-02-16 20:51:10
7	Rohan	290	Ruby	2025-05-04 14:46:52
8	Jared Mulder	301	Ruby	2024-11-09 21:34:13

#	User	Length	Language	Date
1	Vincent Lagerros	370	Rust	2025-05-12 02:10:02
2	Freek van Keulen	694	Rust	2021-12-23 12:51:11
3	Pankajkumar Patro	736	Rust	2024-10-18 17:26:26
4	Bas Dirks	835	Rust	2022-01-26 09:54:50
5	Mathias Magnusson	884	Rust	2019-02-03 12:56:26
6	Christofer Nolander	886	Rust	2018-11-02 18:34:02
7	Isak Jägberg	970	Rust	2024-10-28 16:17:44
8	Connor Skees	1019	Rust	2020-10-25 05:14:38
9	Julien Robert	1117	Rust	2025-02-08 20:30:19
10	Eric Pinter	1272	Rust	2021-11-20 17:26:05

#	User	Length	Language	Date
1	Bransford	755	TypeScript	00:51:46
2	Alexandra	1115	TypeScript	2025-12-14 21:58:11

Solution running time distribution