Problem A
Contest Struggles — Problem Statistics

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Submissions	2734
Accepted submissions	1110
Submission ratio	40.60%
Authors	1034
Full solves [?]	960
Full solve Ratio	92.84%

#	User	Runtime	Language	Date
1	Noah	0.02 s	C#	2021-09-04 02:42:33
2	Nikolai Valkamo	0.02 s	C#	2021-12-22 20:03:09
3	Yousif ALi	0.02 s	C#	2022-09-28 22:09:15
4	Mikael Fiala-Lundström	0.03 s	C#	2021-04-12 22:01:31
5	Göran Andersson	0.03 s	C#	2022-05-19 21:46:42

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.04 s	F#	2022-11-26 09:44:53

#	User	Runtime	Language	Date
1	Hidden user	0.08 s	Go	2021-04-04 08:51:30
2	Norbert Voelker	0.08 s	Go	2021-04-26 23:46:17
3	Ian Howell	0.08 s	Go	2021-05-12 19:54:23

#	User	Runtime	Language	Date
1	Ng Tek In	0.00 s	Haskell	2022-08-20 02:46:00
2	Hidden user	0.00 s	Haskell	2023-01-09 18:09:47
3	Steinar Simonnes	0.00 s	Haskell	2024-03-10 21:46:55
4	Rudy Matela	0.00 s	Haskell	2024-11-11 18:00:56
5	Hidden user	0.00 s	Haskell	2025-01-13 18:57:24
6	eepystrawberry	0.00 s	Haskell	2026-02-12 18:52:52
7	Brent Yorgey	0.01 s	Haskell	2021-04-03 18:39:55
8	Jan Hrček	0.01 s	Haskell	2021-04-07 10:41:55
9	Hidden user	0.01 s	Haskell	2021-05-30 13:20:07
10	Aaron Lengyel	0.01 s	Haskell	2021-11-04 17:50:44

#	User	Runtime	Language	Date
1	Mohammad Naufal Hazim Bin Saharudin	0.04 s	Java	2025-05-30 09:23:26
2	Fadhil Peer Mohamed	0.04 s	Java	2025-11-26 07:23:09
3	Ranjith M	0.05 s	Java	2024-07-26 01:50:53
4	Muhammad Aziz	0.06 s	Java	2021-04-03 18:35:21
5	Calvin Godfrey	0.06 s	Java	2021-04-11 19:16:44
6	Crystal Sharpe	0.06 s	Java	2021-04-16 08:03:57
7	Liam Keliher	0.06 s	Java	2021-05-20 02:44:42
8	Logan Pipes	0.06 s	Java	2021-05-20 03:11:31
9	Emil Bak-Møller	0.06 s	Java	2021-06-08 17:59:45
10	武晓飞	0.06 s	Java	2021-07-03 05:14:30

#	User	Runtime	Language	Date
1	Chris Wong	0.42 s	JavaScript (Node.js)	2022-01-16 16:11:33

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2021-04-04 13:57:10
2	Peter Menyes	0.02 s	JavaScript (SpiderMonkey)	2021-09-23 12:55:48
3	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-07 16:29:19
4	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2025-07-17 00:01:10

#	User	Runtime	Language	Date
1	Timothy Gaede	0.42 s	Julia	2024-04-25 05:14:22

#	User	Runtime	Language	Date
1	Jacob Huebner	0.13 s	Kotlin	2022-03-16 05:25:49
2	Roger Bongers	0.14 s	Kotlin	2021-06-27 03:00:40
3	Aniket Kumar	0.20 s	Kotlin	2024-04-24 15:23:00

#	User	Runtime	Language	Date
1	Zeheng Li	0.00 s	Lua	2024-03-28 18:24:54

#	User	Runtime	Language	Date
1	Danil Braun	0.00 s	OCaml	2021-05-06 13:10:12

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2021-04-08 11:52:28
2	Nhật Nguyễn Minh	0.00 s	Pascal	2021-10-23 14:24:20

#	User	Runtime	Language	Date
1	Hasan Kalzi	0.02 s	Python 2	2022-06-17 16:29:18
2	Balamurugan M	0.02 s	Python 2	2023-07-04 16:58:06
3	Fredrik Horn Dannert	0.03 s	Python 2	2021-04-04 15:08:57
4	Johan Lyts	0.03 s	Python 2	2021-04-07 14:09:33
5	Hidden user	0.03 s	Python 2	2021-04-15 01:59:27
6	Thomas Feld	0.03 s	Python 2	2021-05-21 09:51:51
7	Yanmarshus Bachtiar	0.03 s	Python 2	2021-05-29 09:22:17
8	Adriaan de Vries	0.03 s	Python 2	2021-10-23 16:38:46
9	Olav Røthe Bakken	0.03 s	Python 2	2021-11-20 11:17:39
10	Andreas Björklund	0.03 s	Python 2	2021-11-21 18:41:37

#	User	Runtime	Language	Date
1	Erik Dyrelius	0.04 s	Python 3	2022-06-09 09:04:36
2	crapcode	0.04 s	Python 3	2022-06-09 14:24:49
3	Weiguo Jiang	0.04 s	Python 3	2022-06-14 23:47:57
4	Hasan Kalzi	0.04 s	Python 3	2022-06-17 16:29:05
5	Peter Stauder	0.04 s	Python 3	2022-06-18 19:22:46
6	Rajul Srivastava	0.04 s	Python 3	2022-07-23 08:46:20
7	Hidden user	0.04 s	Python 3	2022-07-24 15:20:15
8	Mariann Løtvedt	0.04 s	Python 3	2022-08-02 20:59:13
9	Kelly Dance	0.04 s	Python 3	2022-08-17 03:18:06
10	Hidden user	0.04 s	Python 3	2022-08-18 03:16:07

#	User	Runtime	Language	Date
1	Kok Dith	0.05 s	Ruby	2021-08-22 17:13:08
2	Thomas Feld	0.06 s	Ruby	2023-03-15 10:22:55

#	User	Runtime	Language	Date
1	Eric Pinter	0.00 s	Rust	2021-06-20 01:26:56
2	Bas Dirks	0.00 s	Rust	2022-01-07 07:32:25
3	David Rasch	0.00 s	Rust	2022-04-29 17:15:09
4	Hidden user	0.00 s	Rust	2023-10-12 21:16:33
5	Vincent Lagerros	0.00 s	Rust	2024-12-04 23:15:56
6	Ole Magnus	0.00 s	Rust	2025-01-14 08:31:11
7	Hidden user	0.00 s	Rust	2025-02-03 02:56:48
8	Joshua Freudenhammer	0.00 s	Rust	2025-09-25 22:03:48
9	Adam Martinez	0.00 s	Rust	2026-02-22 10:47:47

#	User	Length	Language	Date
1	Florian ten Napel	176	C	2025-01-14 17:09:38
2	隨緣	242	C	2021-05-22 15:43:24
3	Hidden user	252	C	2021-05-22 10:08:23
4	劉睿升	262	C	2021-06-24 16:32:58
5	Sambit Palit	266	C	2021-06-27 18:09:34
6	Mirel Cosulschi	271	C	2024-09-19 18:49:26
7	April Clark	279	C	2021-10-03 16:03:56
8	Felix Ren	313	C	2021-07-05 13:46:10
9	劉睿升	328	C	2021-05-22 10:00:58
10	Mikael K Eriksson	337	C	2021-04-05 13:12:34

#	User	Length	Language	Date
1	Nikolai Valkamo	726	C#	2021-12-22 20:03:09
2	Göran Andersson	789	C#	2022-05-19 21:46:42
3	Mikael Fiala-Lundström	962	C#	2021-04-12 22:01:31
4	Noah	1027	C#	2021-09-04 02:42:33
5	Yousif ALi	1049	C#	2022-09-28 22:09:15

#	User	Length	Language	Date
1	Asifur Rahman	191	C++	2024-04-07 19:21:05
2	Kerk Tai Heng	218	C++	2025-11-24 17:01:43
3	Merijn van Delft	223	C++	2025-11-22 12:54:40
4	Grae Yeandle	227	C++	2021-04-03 19:01:23
5	Hung Pham	232	C++	2021-10-23 16:50:58
6	Matteo Zappia	238	C++	2022-04-05 09:17:50
7	Frederick Pek	241	C++	2021-06-13 11:30:14
8	Admasu Abera	241	C++	2021-07-24 22:26:22
9	Bastien Aubecq	245	C++	2025-01-24 11:21:14
10	Matei Tinca	251	C++	2021-11-11 00:26:05

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	442	F#	2022-11-26 09:44:53

#	User	Length	Language	Date
1	Hidden user	207	Go	2021-04-04 08:51:30
2	Ian Howell	225	Go	2021-05-12 19:54:23
3	Norbert Voelker	632	Go	2021-04-26 23:46:17

#	User	Length	Language	Date
1	Rudy Matela	102	Haskell	2024-11-11 18:00:56
2	Aaron Lengyel	154	Haskell	2021-11-04 17:50:44
3	Steinar Simonnes	202	Haskell	2024-03-10 21:46:55
4	Bjarki Baldursson Harksen	239	Haskell	2021-11-10 16:58:41
5	Hidden user	273	Haskell	2023-01-09 18:09:47
6	eepystrawberry	457	Haskell	2026-02-12 18:52:52
7	Hidden user	518	Haskell	2025-01-13 18:57:24
8	Jan Hrček	569	Haskell	2021-04-07 10:41:55
9	Ng Tek In	716	Haskell	2022-08-20 02:46:00
10	Brent Yorgey	1867	Haskell	2021-04-03 18:39:55

#	User	Length	Language	Date
1	Nathaniel Lukas Christianto	401	Java	2023-12-26 04:36:58
2	Christopher Stephens	406	Java	2022-04-26 00:18:49
3	raul fauste	409	Java	2025-02-06 15:23:55
4	Chris Gittings	424	Java	2022-01-21 05:37:48
5	Muhammad Iqbal Bin Imran	434	Java	2021-05-28 18:52:38
6	Gian Peña	474	Java	2021-04-10 03:52:41
7	Sid A	475	Java	2021-04-11 21:12:55
8	Chan Yong Chee	475	Java	2024-12-25 06:02:27
9	Thomas Beuman	486	Java	2021-05-31 14:11:40
10	Maciej Lewandowski	495	Java	2022-01-07 00:51:15

#	User	Length	Language	Date
1	Chris Wong	634	JavaScript (Node.js)	2022-01-16 16:11:33

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	98	JavaScript (SpiderMonkey)	2023-03-07 16:33:18
2	Jimmy Gustafsson	107	JavaScript (SpiderMonkey)	2025-07-17 00:01:10
3	Bjørn Chr. Soltvedt	216	JavaScript (SpiderMonkey)	2021-04-04 13:57:10
4	Peter Menyes	218	JavaScript (SpiderMonkey)	2021-09-23 12:55:48

#	User	Length	Language	Date
1	Timothy Gaede	600	Julia	2024-04-25 05:14:22

#	User	Length	Language	Date
1	Jacob Huebner	451	Kotlin	2022-03-16 05:25:49
2	Aniket Kumar	460	Kotlin	2024-04-24 15:23:00
3	Roger Bongers	509	Kotlin	2021-06-27 03:00:40

#	User	Length	Language	Date
1	Zeheng Li	143	Lua	2024-03-28 18:24:54

#	User	Length	Language	Date
1	Danil Braun	440	OCaml	2021-05-06 13:10:12

#	User	Length	Language	Date
1	Ingemar Ragnemalm	293	Pascal	2021-04-08 11:52:28
2	Nhật Nguyễn Minh	372	Pascal	2021-10-23 14:24:20

#	User	Length	Language	Date
1	Johan Lyts	154	Python 2	2021-04-07 14:09:33
2	Thomas Feld	176	Python 2	2021-05-21 09:51:51
3	Olav Røthe Bakken	183	Python 2	2021-11-20 11:17:39
4	Andreas Björklund	214	Python 2	2021-11-21 18:41:37
5	Fredrik Horn Dannert	216	Python 2	2021-04-04 15:08:57
6	Hidden user	283	Python 2	2021-04-15 01:59:27
7	Yanmarshus Bachtiar	284	Python 2	2021-05-29 09:22:17
8	Adriaan de Vries	286	Python 2	2021-10-23 16:38:46
9	Hasan Kalzi	428	Python 2	2021-04-16 23:35:31
10	Balamurugan M	428	Python 2	2023-07-04 16:58:06

#	User	Length	Language	Date
1	Clement Oh	91	Python 3	2023-07-02 18:54:16
2	Thibault Raffaillac	91	Python 3	2024-08-26 16:00:40
3	Benjamin Z White	92	Python 3	2023-05-19 02:39:05
4	Ryan Farrell	105	Python 3	2025-03-02 06:11:11
5	Tarjei Landøy	106	Python 3	2025-01-20 19:15:52
6	Ahmed Chamseddine	115	Python 3	2024-08-18 22:44:38
7	I Coello	115	Python 3	2025-02-10 18:20:34
8	Jason Oliphant	120	Python 3	2025-03-01 17:32:43
9	Farzam Abrishami	121	Python 3	2024-01-20 20:32:06
10	Tan Yi Long	121	Python 3	2025-04-30 00:21:12

#	User	Length	Language	Date
1	Thomas Feld	77	Ruby	2023-03-15 10:23:43
2	Kok Dith	214	Ruby	2021-08-22 17:13:08

#	User	Length	Language	Date
1	Vincent Lagerros	258	Rust	2024-12-04 23:16:30
2	Bas Dirks	723	Rust	2022-01-07 07:32:25
3	Adam Martinez	737	Rust	2026-02-22 10:47:47
4	David Rasch	816	Rust	2022-04-29 17:15:54
5	Ole Magnus	972	Rust	2025-01-14 08:31:11
6	Hidden user	1057	Rust	2023-10-12 21:16:33
7	Joshua Freudenhammer	1080	Rust	2025-09-25 22:03:48
8	Eric Pinter	1081	Rust	2021-06-20 01:26:56
9	Hidden user	3303	Rust	2025-02-03 02:56:48

Solution running time distribution