Problem I
Some Sum — Problem Statistics

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Submissions	6296
Accepted submissions	2533
Submission ratio	40.23%
Authors	2494
Full solves [?]	2218
Full solve Ratio	88.93%

#	User	Runtime	Language	Date
1	Michael Wichlinski	0.00 s	Ada	2025-02-19 05:38:42

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.01 s	Bash	2023-11-05 11:42:00

#	User	Runtime	Language	Date
1	Gurpartap Singh Bhatti	0.02 s	C#	2019-11-17 03:31:53
2	Michael Palkovics	0.02 s	C#	2019-11-18 14:42:09
3	Johan Pettersson	0.02 s	C#	2019-11-19 17:47:53
4	Rasmus Leyes	0.02 s	C#	2019-11-23 17:51:30
5	Thomas Norris	0.02 s	C#	2019-11-26 19:05:13
6	Sebastian Gielinger	0.02 s	C#	2019-11-28 07:24:02
7	Linus Ekblom	0.02 s	C#	2019-12-27 10:43:02
8	Clarissa Limoa	0.02 s	C#	2020-01-09 10:22:57
9	Maximilian Richter	0.02 s	C#	2020-01-17 13:13:05
10	Alex Darley	0.02 s	C#	2020-02-04 10:09:57

#	User	Runtime	Language	Date
1	Joe Walbran	0.00 s	COBOL	2019-11-17 18:53:46

#	User	Runtime	Language	Date
1	Hidden user	0.01 s	Common Lisp	2020-01-19 05:11:10
2	David Cawthon	0.01 s	Common Lisp	2020-06-22 02:25:01

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.03 s	F#	2022-09-19 18:46:08

#	User	Runtime	Language	Date
1	Krzysztof Gibuła	0.08 s	Go	2021-04-20 16:21:30
2	Norbert Voelker	0.08 s	Go	2021-04-26 10:11:08
3	David Zacek	0.08 s	Go	2021-06-01 22:04:52
4	Resa Renaldy	0.08 s	Go	2021-07-16 03:41:49
5	James Leopold	0.08 s	Go	2021-11-25 10:10:38
6	Jahid Hasan Imon	0.08 s	Go	2022-02-26 09:02:03
7	Nyamdavaa Amar	0.08 s	Go	2022-04-19 18:44:26

#	User	Runtime	Language	Date
1	Leslie Yip	0.00 s	Haskell	2022-08-28 23:17:04
2	Steinar Simonnes	0.00 s	Haskell	2024-02-25 11:28:43
3	Sebastian Banert	0.00 s	Haskell	2025-01-23 18:35:51
4	Boyan Karakostov	0.00 s	Haskell	2026-02-18 14:33:37
5	tibkir	0.00 s	Haskell	2026-02-20 13:24:57
6	Brent Yorgey	0.01 s	Haskell	2019-11-15 18:08:40
7	Hidden user	0.01 s	Haskell	2019-11-16 13:46:36
8	Aurélien Pepin	0.01 s	Haskell	2019-11-20 13:11:50
9	Andreas Ländle	0.01 s	Haskell	2020-06-12 17:39:03
10	Jan Hrček	0.01 s	Haskell	2020-10-29 17:01:02

#	User	Runtime	Language	Date
1	Guangyi Zhou	0.04 s	Java	2024-12-01 15:14:10
2	Hidden user	0.04 s	Java	2025-03-11 04:48:19
3	Issa Issack	0.05 s	Java	2024-06-30 19:09:41
4	Ryan Lee Ting Zhern	0.06 s	Java	2020-05-28 13:52:24
5	Lim Zhan Hong	0.06 s	Java	2020-06-01 13:08:51
6	Hidden user	0.06 s	Java	2020-06-03 19:36:29
7	Kadin Tang	0.06 s	Java	2020-06-20 03:47:40
8	Igor Trúchlik	0.06 s	Java	2020-06-28 12:38:47
9	Kevin Dai	0.06 s	Java	2020-07-25 15:13:30
10	Martijn Muijsers	0.06 s	Java	2020-08-20 22:02:10

#	User	Runtime	Language	Date
1	Chris Wong	0.41 s	JavaScript (Node.js)	2021-02-17 11:32:15
2	Bas Dirks	0.41 s	JavaScript (Node.js)	2021-12-20 20:14:18
3	Peter Kedemo	0.42 s	JavaScript (Node.js)	2020-01-01 11:32:35
4	Christopher Stromberg	0.42 s	JavaScript (Node.js)	2020-02-13 18:15:10
5	Antony Santos	0.42 s	JavaScript (Node.js)	2020-03-13 20:56:22
6	Tilo Hirsch	0.42 s	JavaScript (Node.js)	2020-07-13 18:15:28
7	Andoko Chandra	0.42 s	JavaScript (Node.js)	2020-10-09 10:58:18
8	Hovhannes Kantuni	0.42 s	JavaScript (Node.js)	2021-03-02 21:28:50

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2019-11-17 10:40:22
2	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-08-23 09:37:37
3	Tor Nordqvist	0.02 s	JavaScript (SpiderMonkey)	2022-12-26 11:59:41
4	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-06 21:17:31
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-10 16:28:20
6	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2024-08-04 22:27:39

#	User	Runtime	Language	Date
1	Danny Robinson	0.21 s	Julia	2023-09-10 22:20:13
2	Timothy Gaede	0.27 s	Julia	2024-03-26 07:29:24
3	Hidden user	0.35 s	Julia	2025-09-12 19:20:11

#	User	Runtime	Language	Date
1	Marit van Dijk	0.14 s	Kotlin	2021-09-17 06:50:36
2	Ola Sundell	0.14 s	Kotlin	2022-10-03 13:23:40
3	Paul Kelley	0.17 s	Kotlin	2019-11-11 17:23:22
4	Filip Belik	0.17 s	Kotlin	2019-11-20 18:05:05
5	Merih Bora Poçan	0.17 s	Kotlin	2020-09-16 06:07:59
6	Dayan Ruben Gonzalez	0.17 s	Kotlin	2020-10-08 02:34:51
7	Sergey Jakobsen	0.17 s	Kotlin	2021-06-07 09:17:26
8	Caden G	0.18 s	Kotlin	2019-11-18 16:10:33
9	Phường Lên	0.19 s	Kotlin	2019-11-19 05:19:12
10	Hidden user	0.19 s	Kotlin	2019-11-19 06:09:18

#	User	Runtime	Language	Date
1	Matthew Lutze	0.00 s	OCaml	2020-06-14 05:50:04

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2019-11-21 22:48:52
2	高梓軒4D16 Ko Tsz Hin	0.00 s	Pascal	2020-02-06 05:04:10

#	User	Runtime	Language	Date
1	cojonas1	0.01 s	PHP	2021-03-01 15:20:17
2	Zaw Phyo	0.01 s	PHP	2023-04-28 02:21:42

#	User	Runtime	Language	Date
1	Hakan Kjellerstrand	0.02 s	Prolog	2023-02-19 08:15:11
2	Andriy Zyevakov	0.02 s	Prolog	2023-03-19 16:18:46

#	User	Runtime	Language	Date
1	Nathan Ferragut	0.03 s	Python 2	2019-11-15 19:28:16
2	Johan Lyts	0.03 s	Python 2	2019-11-16 13:23:29
3	Ram Basnet	0.03 s	Python 2	2019-11-16 23:27:53
4	Godmar Back	0.03 s	Python 2	2019-11-17 04:30:49
5	Olav Røthe Bakken	0.03 s	Python 2	2019-11-18 12:56:06
6	Jesper Öqvist	0.03 s	Python 2	2019-11-19 13:47:44
7	Thomas Feld	0.03 s	Python 2	2019-11-26 10:03:56
8	Sigurður Jens Albertsson	0.03 s	Python 2	2019-11-27 00:09:43
9	Mukerem Ali Nur	0.03 s	Python 2	2019-11-27 07:12:25
10	Justin Su	0.03 s	Python 2	2019-11-28 16:06:43

#	User	Runtime	Language	Date
1	Sean Malloy	0.02 s	Python 3	2019-11-15 17:29:37
2	April Chao	0.02 s	Python 3	2019-11-15 18:03:28
3	William Taylor-Melanson	0.02 s	Python 3	2019-11-15 18:55:14
4	Allan Stewart	0.02 s	Python 3	2019-11-15 18:56:20
5	Katya	0.02 s	Python 3	2019-11-15 19:10:48
6	Sebastian Boldsen Jakobsen	0.02 s	Python 3	2019-11-15 19:21:59
7	William Lynch	0.02 s	Python 3	2019-11-15 19:25:26
8	Steffen Andrè Grønmo	0.02 s	Python 3	2019-11-15 19:50:13
9	Sverrir Hákon Marteinsson	0.02 s	Python 3	2019-11-15 19:56:05
10	Bjørn Dons	0.02 s	Python 3	2019-11-15 20:04:40

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Ruby	2019-11-17 12:16:36
2	Hidden user	0.04 s	Ruby	2019-11-21 17:05:45
3	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-11-22 21:18:13
4	Thomas Feld	0.06 s	Ruby	2022-12-13 07:08:24

#	User	Length	Language	Date
1	Michael Wichlinski	658	Ada	2025-02-19 05:38:42

#	User	Length	Language	Date
1	Chenzhang Hu	46	Bash	2025-09-12 18:13:29

#	User	Length	Language	Date
1	a_b__c	113	C	2021-02-02 15:03:09
2	Magnus Wass	162	C	2020-03-17 15:21:51
3	PhilCampbell	174	C	2021-01-09 11:18:28
4	Mael MENOU	188	C	2021-12-05 10:54:45
5	Emil Wihlander	189	C	2020-12-09 20:43:04
6	Sambit Palit	190	C	2020-10-13 20:52:21
7	Julian Duniec	191	C	2024-06-25 10:48:58
8	Caleb Kraglund	194	C	2025-09-27 18:57:42
9	Christian Seibold	195	C	2019-11-15 18:55:58
10	Cyrus Leung	198	C	2020-02-06 13:20:46

#	User	Length	Language	Date
1	Hidden user	194	C#	2025-11-12 11:24:54
2	Malte Lundberg	273	C#	2025-09-23 12:23:26
3	Esty Crow	274	C#	2023-02-16 23:13:58
4	Gurpartap Singh Bhatti	278	C#	2019-11-17 03:31:53
5	Nick Wu	279	C#	2022-03-14 23:38:08
6	Thomas Norris	289	C#	2019-11-26 19:05:13
7	Clarissa Limoa	366	C#	2020-12-02 12:37:04
8	Anthony Ye	371	C#	2023-02-19 16:39:24
9	tony shi	406	C#	2023-09-28 19:18:32
10	Göran Andersson	423	C#	2022-05-15 21:25:27

#	User	Length	Language	Date
1	Taylor Rodríguez	88	C++	2025-05-11 02:03:51
2	Tyler Fernando	93	C++	2022-11-02 07:15:39
3	Enrico Manfron	121	C++	2020-06-25 18:03:45
4	Evan Michael Bailey	138	C++	2024-02-23 16:00:35
5	Ohieku Eneji Peacemaker	141	C++	2025-06-01 19:50:13
6	Hidden user	144	C++	2020-08-28 20:41:22
7	Sarah Adel	144	C++	2021-07-03 23:02:06
8	traxex	151	C++	2021-12-14 07:23:36
9	Frans Meulenbroeks	151	C++	2024-10-25 16:23:24
10	Aaron Kenn	152	C++	2025-11-28 12:40:01

#	User	Length	Language	Date
1	Joe Walbran	1123	COBOL	2019-11-17 18:53:46

#	User	Length	Language	Date
1	Hidden user	182	Common Lisp	2020-01-19 05:11:10
2	David Cawthon	252	Common Lisp	2020-06-22 02:25:01

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	339	F#	2022-09-19 18:46:08

#	User	Length	Language	Date
1	David Zacek	211	Go	2021-06-01 22:04:52
2	Resa Renaldy	232	Go	2021-07-16 03:41:49
3	Jahid Hasan Imon	284	Go	2022-02-26 09:02:03
4	Nyamdavaa Amar	295	Go	2022-04-19 18:44:26
5	Krzysztof Gibuła	420	Go	2021-04-20 16:21:30
6	James Leopold	421	Go	2021-11-25 10:10:38
7	Norbert Voelker	870	Go	2021-04-26 10:11:08

#	User	Length	Language	Date
1	Sebastian Banert	115	Haskell	2025-01-23 18:35:51
2	Thorbjørn Melheim	155	Haskell	2020-12-17 01:02:30
3	Leslie Yip	189	Haskell	2022-08-28 23:17:04
4	Aurélien Pepin	199	Haskell	2019-11-20 13:11:50
5	Jan Hrček	205	Haskell	2020-10-29 17:01:02
6	Caleb Surovik	209	Haskell	2021-07-09 17:37:07
7	Brian Hwang	218	Haskell	2021-03-05 00:42:16
8	Anders Aarsæther	225	Haskell	2021-11-08 14:35:45
9	Hidden user	270	Haskell	2019-11-16 13:46:36
10	Brent Yorgey	298	Haskell	2019-11-15 18:08:40

#	User	Length	Language	Date
1	Jason Liu	206	Java	2023-09-08 16:25:20
2	Nicholas Bui	220	Java	2019-11-19 22:58:10
3	Kristóf Németh	225	Java	2025-11-23 12:20:20
4	Calvin Godfrey	258	Java	2019-11-18 17:38:54
5	Logan Simon	280	Java	2020-11-10 21:18:43
6	Lottie Peterson	288	Java	2023-09-24 18:19:49
7	Caeden Whitaker	293	Java	2020-07-08 02:17:13
8	William Huang	300	Java	2020-09-07 03:37:59
9	Javad Jafari	303	Java	2020-02-29 10:48:16
10	Jacob Lee	306	Java	2020-02-11 02:01:13

#	User	Length	Language	Date
1	Peter Kedemo	350	JavaScript (Node.js)	2020-01-01 11:32:35
2	Tilo Hirsch	384	JavaScript (Node.js)	2020-07-13 18:15:28
3	Chris Wong	450	JavaScript (Node.js)	2021-02-17 11:32:15
4	Hovhannes Kantuni	494	JavaScript (Node.js)	2021-03-02 21:28:50
5	Antony Santos	806	JavaScript (Node.js)	2020-03-13 20:56:22
6	Andoko Chandra	811	JavaScript (Node.js)	2020-10-09 10:58:18
7	Bas Dirks	894	JavaScript (Node.js)	2021-12-20 20:14:18
8	Christopher Stromberg	1236	JavaScript (Node.js)	2020-02-13 18:15:10

#	User	Length	Language	Date
1	Jimmy Gustafsson	49	JavaScript (SpiderMonkey)	2024-08-04 22:27:39
2	Christian Pilegaard Cederquist	50	JavaScript (SpiderMonkey)	2023-01-06 21:18:14
3	Bjørn Chr. Soltvedt	115	JavaScript (SpiderMonkey)	2019-11-17 10:40:22
4	Peter Menyes	234	JavaScript (SpiderMonkey)	2021-08-23 09:37:37
5	Zach Tschetter	301	JavaScript (SpiderMonkey)	2023-06-10 16:28:20
6	Tor Nordqvist	370	JavaScript (SpiderMonkey)	2022-12-26 11:59:41

#	User	Length	Language	Date
1	Danny Robinson	70	Julia	2023-09-10 22:20:13
2	Hidden user	74	Julia	2025-09-12 19:25:58
3	Timothy Gaede	190	Julia	2024-03-26 07:29:24

#	User	Length	Language	Date
1	Sergey Jakobsen	162	Kotlin	2021-06-07 09:22:11
2	Troy Warmboe	170	Kotlin	2020-02-08 23:47:37
3	Einar Kjellback	180	Kotlin	2019-11-28 14:33:06
4	Phường Lên	199	Kotlin	2019-11-19 05:19:12
5	Hidden user	218	Kotlin	2019-11-19 06:09:18
6	Merih Bora Poçan	236	Kotlin	2020-09-16 06:07:59
7	Paul Kelley	247	Kotlin	2019-11-11 17:23:22
8	Caden G	247	Kotlin	2019-11-18 16:10:33
9	Filip Belik	247	Kotlin	2019-11-20 18:05:05
10	Dayan Ruben Gonzalez	277	Kotlin	2020-10-08 02:34:51

#	User	Length	Language	Date
1	Matthew Lutze	242	OCaml	2020-06-14 05:50:04

#	User	Length	Language	Date
1	Ingemar Ragnemalm	181	Pascal	2019-11-21 22:48:52
2	高梓軒4D16 Ko Tsz Hin	193	Pascal	2020-02-06 05:04:10

#	User	Length	Language	Date
1	cojonas1	297	PHP	2021-03-01 15:20:17
2	Zaw Phyo	426	PHP	2023-04-28 02:21:42

#	User	Length	Language	Date
1	Hakan Kjellerstrand	134	Prolog	2023-02-19 09:14:53
2	Andriy Zyevakov	349	Prolog	2023-03-19 16:18:46

#	User	Length	Language	Date
1	Thomas Feld	70	Python 2	2019-11-26 10:03:56
2	Johan Lyts	80	Python 2	2019-11-16 13:23:29
3	Guan Yang Ze	93	Python 2	2020-03-13 13:43:28
4	Andreas Björklund	96	Python 2	2020-01-04 08:36:04
5	Sigurður Jens Albertsson	97	Python 2	2019-11-27 00:09:43
6	Jesper Öqvist	100	Python 2	2019-11-19 13:50:32
7	Justin Su	102	Python 2	2019-11-28 16:08:47
8	Nathan Ferragut	105	Python 2	2019-11-15 19:28:16
9	Hugo Nissar	110	Python 2	2019-11-15 22:38:42
10	Olav Røthe Bakken	110	Python 2	2019-11-18 12:56:06

#	User	Length	Language	Date
1	Youssef Zahar	52	Python 3	2022-09-13 00:25:10
2	Max Jytyla	52	Python 3	2022-09-13 00:32:29
3	Clement Oh	52	Python 3	2023-05-18 14:43:44
4	Thibault Raffaillac	52	Python 3	2024-07-30 18:09:00
5	Alexandre Charland	52	Python 3	2024-11-04 15:09:22
6	Si Jie Tan	52	Python 3	2026-01-23 08:11:33
7	Taylor Rodríguez	54	Python 3	2025-05-11 02:34:38
8	Guillermo Hernández	55	Python 3	2022-08-26 08:13:33
9	Hakan Kjellerstrand	56	Python 3	2023-02-19 08:38:47
10	Jakob Rødal Skaar	56	Python 3	2023-06-26 12:15:55

#	User	Length	Language	Date
1	Thomas Feld	43	Ruby	2022-12-13 07:14:15
2	Hidden user	93	Ruby	2019-11-17 12:16:36
3	Macdara mac an tSionnaigh	188	Ruby	2019-11-22 21:18:13
4	Hidden user	190	Ruby	2019-11-21 17:05:45

#	User	Length	Language	Date
1	David Aldenbro	155	Rust	2023-10-26 14:25:30
2	Oskar Strömberg	328	Rust	2020-10-23 21:08:35
3	Artur Khuziakhmetov	341	Rust	2022-07-05 22:57:04
4	Hidden user	343	Rust	2020-07-01 18:24:29
5	Kok Dith	415	Rust	2021-08-14 16:10:32
6	David Rasch	464	Rust	2020-10-08 08:42:23
7	Guilherme Prado	474	Rust	2019-11-30 04:11:21
8	Klas af Geijerstam	501	Rust	2020-01-22 16:00:39
9	Isak Jägberg	529	Rust	2020-06-14 09:52:48
10	Vincent Lagerros	591	Rust	2025-02-06 18:02:32

Solution running time distribution