Problem A
Shopping List (Easy) — Problem Statistics

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Submissions	2614
Accepted submissions	1249
Submission ratio	47.78%
Authors	1173
Full solves [?]	1077
Full solve Ratio	91.82%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.07 s	Bash	2025-09-13 02:44:45

#	User	Runtime	Language	Date
1	Eric Weiss	0.02 s	C#	2022-07-07 22:10:11
2	Nathaniel McComas	0.02 s	C#	2022-10-26 09:56:03
3	Emil Jäpelt	0.03 s	C#	2021-02-12 16:45:31
4	Amin Ahwazi	0.03 s	C#	2021-06-15 09:26:15
5	Carson Price	0.03 s	C#	2021-06-15 22:01:00
6	Johan Kjellström	0.03 s	C#	2021-10-25 15:31:35
7	Ali Aliev	0.03 s	C#	2022-02-12 18:37:52
8	Hidden user	0.03 s	C#	2022-07-13 22:23:26
9	Yuwono Bangun Nagoro	0.03 s	C#	2022-09-09 19:56:54
10	Andriy Zyevakov	0.03 s	C#	2022-12-19 07:57:01

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2022-10-11 18:43:36
2	Patrick Bahr	0.06 s	F#	2021-02-20 17:40:44

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-04-22 20:34:05
2	Daniel Power	0.08 s	Go	2021-06-12 04:43:53
3	Resa Renaldy	0.08 s	Go	2021-07-15 17:06:18
4	Syn Kae Ng	0.08 s	Go	2022-04-25 23:19:40

#	User	Runtime	Language	Date
1	Ng Tek In	0.00 s	Haskell	2022-08-11 10:58:43
2	Mason Barnhill	0.00 s	Haskell	2023-05-26 18:54:17
3	Sondre Lunde	0.00 s	Haskell	2023-06-23 10:46:42
4	Charley Sheaffer	0.00 s	Haskell	2023-11-09 20:24:57
5	Steinar Simonnes	0.00 s	Haskell	2024-02-19 17:34:04
6	Bernardo Brust	0.00 s	Haskell	2025-07-28 14:50:20
7	Brent Yorgey	0.01 s	Haskell	2021-02-01 21:29:44
8	Jan Hrček	0.01 s	Haskell	2021-03-07 10:49:18
9	Hidden user	0.01 s	Haskell	2021-05-29 16:39:38
10	Caleb Surovik	0.01 s	Haskell	2021-07-11 08:15:26

#	User	Runtime	Language	Date
1	Julius Griebel	0.04 s	Java	2024-11-18 20:48:33
2	Hidden user	0.04 s	Java	2025-02-15 15:26:41
3	Tan Zhang-Hng Ervin	0.05 s	Java	2024-10-05 10:06:03
4	Guangyi Zhou	0.05 s	Java	2024-12-18 13:42:10
5	Joachim Borup	0.06 s	Java	2021-02-04 00:55:03
6	Emil Bak-Møller	0.06 s	Java	2021-02-14 23:15:01
7	Liam Keliher	0.06 s	Java	2021-02-16 23:06:23
8	Tan Jia Le Damien	0.06 s	Java	2021-08-08 05:00:30
9	Samuel Klingström	0.06 s	Java	2021-09-24 20:15:00
10	Stela Palii	0.06 s	Java	2022-01-04 06:56:36

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	JavaScript (Node.js)	2025-02-01 21:52:13
2	Hassan Mango	0.05 s	JavaScript (Node.js)	2024-03-30 07:09:05
3	Eligijus Petrikonis	0.09 s	JavaScript (Node.js)	2023-08-18 12:57:26
4	Paulius M	0.09 s	JavaScript (Node.js)	2023-08-22 13:04:35
5	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-17 13:14:32
6	Howard Tin Chi Chan	0.42 s	JavaScript (Node.js)	2021-02-19 18:00:34
7	John	0.42 s	JavaScript (Node.js)	2021-02-20 08:31:38
8	Theodore Corrello-Reiser	0.42 s	JavaScript (Node.js)	2021-02-24 23:44:15
9	Hovhannes Kantuni	0.42 s	JavaScript (Node.js)	2021-03-02 23:53:43
10	Peter Kedemo	0.42 s	JavaScript (Node.js)	2022-01-02 13:29:31

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-22 07:24:40
2	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-07-20 19:15:50
3	Bjørn Chr. Soltvedt	0.03 s	JavaScript (SpiderMonkey)	2021-01-31 20:23:28
4	Peter Menyes	0.03 s	JavaScript (SpiderMonkey)	2021-08-15 15:06:56

#	User	Runtime	Language	Date
1	Danny Robinson	0.86 s	Julia	2024-09-07 00:08:10
2	Timothy Gaede	0.89 s	Julia	2024-03-26 06:35:29

#	User	Runtime	Language	Date
1	Marit van Dijk	0.17 s	Kotlin	2021-09-16 19:36:29
2	Roger Bongers	0.18 s	Kotlin	2021-06-26 23:42:33
3	Ola Sundell	0.18 s	Kotlin	2021-10-20 16:42:36
4	Sergey Jakobsen	0.21 s	Kotlin	2021-06-07 09:59:28
5	Ahmed Waseem Saeed	0.21 s	Kotlin	2022-01-17 17:06:31
6	Hidden user	0.21 s	Kotlin	2023-02-21 23:39:52
7	Zaw Myat	0.21 s	Kotlin	2024-02-19 16:37:07
8	Martijn Muijsers	0.21 s	Kotlin	2024-05-31 18:28:37
9	Adam Rankin	0.22 s	Kotlin	2023-05-06 06:39:19
10	Jakub Jagiello	0.23 s	Kotlin	2021-06-12 11:28:08

#	User	Runtime	Language	Date
1	Sebastian Banert	0.00 s	OCaml	2025-03-18 13:00:18

#	User	Runtime	Language	Date
1	David Connolly	0.00 s	Pascal	2025-08-15 16:14:58

#	User	Runtime	Language	Date
1	Renate	0.01 s	PHP	2021-07-05 01:21:36

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-15 18:26:35

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-06-18 22:50:12
2	Yanmarshus Bachtiar	0.03 s	Python 2	2021-02-01 01:21:16
3	Sigurður Jens Albertsson	0.03 s	Python 2	2021-02-24 11:23:02
4	Andreas Björklund	0.03 s	Python 2	2021-04-01 15:15:14
5	Thomas Feld	0.03 s	Python 2	2021-05-21 09:54:11
6	Gibransyah	0.03 s	Python 2	2021-06-18 12:26:44
7	Andrei Stoica	0.03 s	Python 2	2021-09-13 11:48:16
8	Agis Daniels	0.03 s	Python 2	2021-12-08 15:22:41
9	Johan Lyts	0.03 s	Python 2	2022-05-07 13:56:52

#	User	Runtime	Language	Date
1	Petr	0.04 s	Python 3	2022-06-17 17:56:12
2	Hasan Kalzi	0.04 s	Python 3	2022-06-18 22:46:40
3	Lawry Sorenson	0.04 s	Python 3	2022-06-29 03:21:03
4	Josh Taylor	0.04 s	Python 3	2022-06-29 03:21:07
5	Thomas Draper	0.04 s	Python 3	2022-06-29 07:59:52
6	Kaaden RumanCam	0.04 s	Python 3	2022-07-08 03:55:45
7	Kenneth Jensen	0.04 s	Python 3	2022-07-08 09:51:37
8	Clifford Owino	0.04 s	Python 3	2022-07-14 10:32:26
9	Ya Nant Thin	0.04 s	Python 3	2022-07-19 17:47:06
10	Kattis Speedrun	0.04 s	Python 3	2022-07-22 05:20:01

#	User	Runtime	Language	Date
1	Miorel Palii	0.05 s	Ruby	2022-03-12 18:26:14
2	Thomas Feld	0.06 s	Ruby	2023-03-14 13:25:11
3	Drew Wilson	0.06 s	Ruby	2023-06-02 02:10:06
4	Clement Oh	0.06 s	Ruby	2023-10-30 18:16:16
5	Chenzhang Hu	0.07 s	Ruby	2025-04-24 17:46:16

#	User	Length	Language	Date
1	Chenzhang Hu	55	Bash	2025-09-13 02:44:45

#	User	Length	Language	Date
1	Gaelan McMillan	836	C	2022-11-26 01:53:58
2	Robert De Angelis	947	C	2022-11-26 02:27:57
3	Matthew Hartono	1055	C	2022-11-09 15:35:58
4	kristianto wijaya	1120	C	2021-10-16 13:09:26
5	Julian Duniec	1180	C	2023-08-15 15:57:27
6	Sami Al Chalati	1247	C	2024-09-26 20:46:56
7	Richard Arthur	1354	C	2023-06-13 15:29:51
8	Neeraj Kumbar	1392	C	2023-05-30 10:18:21
9	Christoffer Østborg	1801	C	2021-02-27 18:35:33
10	Hidden user	1937	C	2022-01-06 08:46:56

#	User	Length	Language	Date
1	traxex	448	C#	2024-05-15 14:01:33
2	Michael Fourie	599	C#	2024-09-19 01:09:28
3	Գոռ Բաղդասարյան	800	C#	2024-07-22 07:38:13
4	Elijah	818	C#	2023-04-03 21:19:21
5	Hidden user	844	C#	2022-07-13 22:23:26
6	Nathaniel McComas	957	C#	2022-10-26 09:56:03
7	bondenn	980	C#	2021-10-25 15:57:11
8	Göran Andersson	1072	C#	2022-05-14 18:21:09
9	Eric Weiss	1081	C#	2022-07-07 22:10:11
10	Ranjith M	1109	C#	2023-08-23 01:11:48

#	User	Length	Language	Date
1	Frans Meulenbroeks	206	C++	2025-02-18 22:58:27
2	rares poenar	369	C++	2022-10-16 13:28:45
3	黃宥華	381	C++	2021-12-04 12:59:22
4	Joel Niemelä	393	C++	2025-03-22 03:47:09
5	Alex Petru	397	C++	2021-12-08 17:54:56
6	Elias Lolck	401	C++	2021-02-12 16:17:11
7	Christian Yongwhan Lim	418	C++	2023-05-25 12:59:36
8	Frederick Pek	430	C++	2021-06-06 10:36:24
9	Aayush Shrivastava	448	C++	2021-11-29 07:48:07
10	Buste Alin	449	C++	2024-10-23 20:08:12

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	440	F#	2022-10-11 18:43:36
2	Patrick Bahr	2234	F#	2021-02-20 17:40:44

#	User	Length	Language	Date
1	Syn Kae Ng	777	Go	2022-04-25 23:19:40
2	Norbert Voelker	888	Go	2021-04-22 20:34:05
3	Daniel Power	1126	Go	2021-06-12 04:43:53
4	Resa Renaldy	1207	Go	2021-07-15 17:06:18

#	User	Length	Language	Date
1	Sondre Lunde	186	Haskell	2023-06-23 10:46:42
2	Charley Sheaffer	244	Haskell	2023-11-09 20:24:57
3	Øyvind Almli	246	Haskell	2021-10-22 19:05:09
4	Jahid Hasan Imon	339	Haskell	2021-07-26 09:52:00
5	Bernardo Brust	350	Haskell	2025-07-28 14:50:20
6	Brian Hwang	366	Haskell	2021-08-24 09:43:16
7	Ng Tek In	448	Haskell	2022-08-11 10:58:43
8	Steinar Simonnes	500	Haskell	2024-02-20 08:25:11
9	Mason Barnhill	571	Haskell	2023-05-26 18:54:17
10	Caleb Surovik	610	Haskell	2021-07-11 08:15:26

#	User	Length	Language	Date
1	Arup Ratan Guha	651	Java	2021-10-05 01:29:40
2	Jason Liu	673	Java	2023-05-25 03:56:39
3	Doug Goodman	735	Java	2021-10-31 20:23:59
4	Justin Yang	749	Java	2022-11-22 22:51:38
5	Adrian Bay Dorph	785	Java	2021-02-07 15:12:06
6	Martha E.	786	Java	2025-04-20 04:15:23
7	Carter Henderson	794	Java	2022-04-25 18:20:35
8	Hunter Mullen	803	Java	2025-02-07 01:05:47
9	Christoffer Gram	812	Java	2021-02-12 17:45:06
10	Daniel Sutantyo	813	Java	2021-09-14 14:39:02

#	User	Length	Language	Date
1	Peter Kedemo	435	JavaScript (Node.js)	2022-01-02 13:29:31
2	Howard Tin Chi Chan	653	JavaScript (Node.js)	2021-02-19 18:00:34
3	Chris Wong	675	JavaScript (Node.js)	2021-02-17 13:14:32
4	Eligijus Petrikonis	768	JavaScript (Node.js)	2023-08-18 15:04:23
5	Hassan Mango	810	JavaScript (Node.js)	2024-03-30 07:09:05
6	Hovhannes Kantuni	872	JavaScript (Node.js)	2021-03-02 23:53:43
7	Hidden user	1038	JavaScript (Node.js)	2025-02-01 21:52:13
8	John	1055	JavaScript (Node.js)	2021-02-20 08:31:38
9	Paulius M	1236	JavaScript (Node.js)	2023-08-22 13:04:35
10	Theodore Corrello-Reiser	1237	JavaScript (Node.js)	2021-02-24 23:44:15

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	210	JavaScript (SpiderMonkey)	2023-01-22 07:24:40
2	Jimmy Gustafsson	210	JavaScript (SpiderMonkey)	2024-07-20 21:22:39
3	Bjørn Chr. Soltvedt	401	JavaScript (SpiderMonkey)	2021-01-31 20:23:28
4	Peter Menyes	448	JavaScript (SpiderMonkey)	2021-08-15 15:06:56

#	User	Length	Language	Date
1	Danny Robinson	71	Julia	2024-09-07 00:08:10
2	Timothy Gaede	1262	Julia	2024-03-26 06:25:28

#	User	Length	Language	Date
1	Magnus Tønnessen	239	Kotlin	2024-09-19 15:46:27
2	Troy Warmboe	300	Kotlin	2023-04-13 00:24:19
3	Roger Bongers	349	Kotlin	2021-06-26 23:42:33
4	Adam Rankin	431	Kotlin	2023-05-06 06:39:19
5	Sondre Martin Bakke	479	Kotlin	2024-09-19 16:14:00
6	Jakub Jagiello	589	Kotlin	2021-06-12 11:28:08
7	Ola Sundell	634	Kotlin	2021-10-20 16:42:36
8	Sergey Jakobsen	646	Kotlin	2021-06-07 10:53:34
9	Ahmed Waseem Saeed	657	Kotlin	2022-01-17 17:06:31
10	Zaw Myat	743	Kotlin	2024-02-19 16:37:07

#	User	Length	Language	Date
1	Sebastian Banert	564	OCaml	2025-03-18 13:00:18

#	User	Length	Language	Date
1	David Connolly	1213	Pascal	2025-08-15 16:14:58

#	User	Length	Language	Date
1	Renate	488	PHP	2021-07-05 01:21:36

#	User	Length	Language	Date
1	Hakan Kjellerstrand	398	Prolog	2023-02-15 18:26:35

#	User	Length	Language	Date
1	Johan Lyts	194	Python 2	2022-05-07 13:56:52
2	Thomas Feld	201	Python 2	2021-05-21 09:54:11
3	Agis Daniels	277	Python 2	2021-12-08 15:22:41
4	Andreas Björklund	284	Python 2	2021-04-01 15:15:14
5	Sigurður Jens Albertsson	306	Python 2	2021-02-24 11:23:02
6	Yanmarshus Bachtiar	351	Python 2	2021-02-01 01:21:16
7	Gibransyah	352	Python 2	2021-06-18 12:26:44
8	Andrei Stoica	403	Python 2	2021-09-13 11:48:16
9	Hasan Kalzi	1168	Python 2	2021-03-12 12:56:34

#	User	Length	Language	Date
1	Clement Oh	81	Python 3	2023-06-29 07:02:35
2	Benjamin Z White	98	Python 3	2023-05-04 01:19:09
3	Allison Pelton	109	Python 3	2024-12-15 08:43:26
4	Collin Simpson	134	Python 3	2024-02-02 08:12:29
5	Morten Clausen	136	Python 3	2022-10-25 21:50:15
6	Alexandre Charland	138	Python 3	2024-06-07 14:17:22
7	Ritwin Narra	140	Python 3	2022-11-14 00:18:30
8	Markus Mathiasen	141	Python 3	2023-02-08 17:00:15
9	Brandon Zhang	143	Python 3	2022-05-18 07:03:16
10	Shashank Bhatt	145	Python 3	2024-07-24 05:13:27

#	User	Length	Language	Date
1	Chenzhang Hu	50	Ruby	2025-04-24 17:46:16
2	Thomas Feld	51	Ruby	2023-03-14 13:26:19
3	Clement Oh	102	Ruby	2023-10-30 18:16:16
4	Miorel Palii	161	Ruby	2022-03-12 18:26:14
5	Drew Wilson	212	Ruby	2023-06-02 02:10:06

#	User	Length	Language	Date
1	David Zacek	715	Rust	2021-05-27 23:02:35
2	David Rasch	768	Rust	2021-03-02 12:35:01
3	Isak Jägberg	790	Rust	2023-03-27 12:07:37
4	Kok Dith	858	Rust	2021-08-14 18:25:24
5	Bas Dirks	862	Rust	2022-01-06 15:56:15
6	chuanhao01	928	Rust	2024-04-06 12:26:38
7	Pankajkumar Patro	1011	Rust	2024-10-03 15:09:19
8	Dude Bro	1013	Rust	2023-09-19 08:24:36
9	Freek van Keulen	1189	Rust	2021-07-25 14:26:05
10	Eric Pinter	1423	Rust	2021-02-05 22:54:30

Solution running time distribution