Problem A
1's For All — Problem Statistics

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Submissions	4263
Accepted submissions	831
Submission ratio	19.49%
Authors	860
Full solves [?]	465
Full solve Ratio	54.07%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.18 s	Bash	2024-04-18 14:35:34

#	User	Runtime	Language	Date
1	Grettir Heimisson	0.00 s	C	2024-09-13 17:00:07
2	Arni Alfredsson	0.04 s	C	2024-09-12 15:27:26
3	Hjörtur Björnsson	0.07 s	C	2023-03-28 23:20:08
4	Eyleifur Bjarkason	0.09 s	C	2024-09-11 15:06:36
5	Will Killian	0.10 s	C	2022-10-03 01:02:57
6	Brandon Lee	1.85 s	C	2025-01-31 23:59:51
7	Alexander Bilde Pedersen	1.97 s	C	2023-07-01 00:52:25
8	Bergur Snorrason	2.61 s	C	2024-09-15 10:29:22
9	Reuben	3.43 s	C	2023-07-29 00:38:33
10	Max Nilsson	3.50 s	C	2022-03-31 09:38:32

#	User	Runtime	Language	Date
1	la123	0.20 s	Fortran	2025-03-26 08:59:40

#	User	Runtime	Language	Date
1	Norbert Voelker	0.25 s	Go	2023-07-26 15:06:10

#	User	Runtime	Language	Date
1	Edmunds Cers	0.20 s	Haskell	2025-08-12 12:54:27
2	Juan Miguel Vilar	3.55 s	Haskell	2023-07-26 07:55:34
3	Fabian Mitterwallner	5.91 s	Haskell	2025-08-13 19:52:01

#	User	Runtime	Language	Date
1	Hidden user	0.36 s	Java	2022-02-26 18:16:40
2	John Huddleston	0.41 s	Java	2024-04-24 20:04:52
3	leo0813	0.50 s	Java	2025-07-26 11:10:56
4	Crystal Sharpe	0.74 s	Java	2022-03-12 20:48:48
5	Mark Sturtevant	2.14 s	Java	2023-12-29 17:51:51
6	lspfa	2.36 s	Java	2022-10-24 21:37:56
7	Rene van Putten	2.50 s	Java	2023-09-17 18:18:05
8	Robert Jay Beralde	2.52 s	Java	2023-08-25 01:15:20
9	Robert Jay Beralde	2.68 s	Java	2023-08-21 04:21:15
10	Shreyas Jamadagni	3.22 s	Java	2025-04-05 14:47:20

#	User	Runtime	Language	Date
1	Sabrine Shami Karanganwa	0.48 s	JavaScript (Node.js)	2025-10-08 16:40:53
2	Jiayi Nie	0.50 s	JavaScript (Node.js)	2025-06-18 14:16:24

#	User	Runtime	Language	Date
1	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-09-03 07:06:44
2	Christian Pilegaard Cederquist	0.47 s	JavaScript (SpiderMonkey)	2023-02-26 14:49:17

#	User	Runtime	Language	Date
1	Yue Sun	0.65 s	Julia	2025-07-29 06:39:09
2	Konyihuly Falhozvert	0.79 s	Julia	2023-11-11 12:10:57
3	Hidden user	2.71 s	Julia	2023-11-11 11:14:46
4	Vahagn Altunyan	11.71 s	Julia	2024-06-18 08:23:43

#	User	Runtime	Language	Date
1	Nicholas Johnson	6.45 s	Kotlin	2022-03-13 17:35:27
2	Jacob Huebner	6.45 s	Kotlin	2022-03-13 21:48:27

#	User	Runtime	Language	Date
1	Andreas Björklund	0.55 s	Python 2	2022-03-05 19:28:17
2	Muhammad Ashir	7.24 s	Python 2	2024-06-26 20:18:35
3	Rayyan Naqvi	10.59 s	Python 2	2024-06-28 10:43:03
4	Hayden Dansereau	10.60 s	Python 2	2023-12-08 21:15:13
5	Carlos José Rebellon Jalil	12.30 s	Python 2	2025-10-30 00:00:11

#	User	Runtime	Language	Date
1	Jorge Villarrubia Elvira	0.04 s	Python 3	2024-09-07 09:01:40
2	Alexandre Noel	0.04 s	Python 3	2024-10-09 18:27:42
3	Guillermo Garcia Ramos de la Rosa	0.04 s	Python 3	2024-12-04 22:36:13
4	Jonathan Allarassem	0.04 s	Python 3	2025-05-10 18:10:20
5	Pablo Sainz López	0.04 s	Python 3	2025-06-15 16:40:55
6	Jack Meyer Garvey	0.04 s	Python 3	2025-08-15 22:31:13
7	Michael Jeppesen	0.04 s	Python 3	2025-12-06 03:45:34
8	Martin Zhang	0.04 s	Python 3	2025-12-31 19:25:23
9	Elias Lundell	0.05 s	Python 3	2022-06-12 18:39:04
10	Kattis Speedrun	0.05 s	Python 3	2022-07-21 16:19:20

#	User	Runtime	Language	Date
1	Thomas Feld	5.89 s	Ruby	2023-08-22 14:06:59

#	User	Runtime	Language	Date
1	Fabian Elliot Dudde Arn	0.00 s	Rust	2023-08-27 22:56:04
2	Alexandre Noel	0.00 s	Rust	2024-10-09 18:12:57
3	Elias Nodland	0.11 s	Rust	2023-12-06 06:48:55
4	Alexander Berntsson	0.12 s	Rust	2022-06-27 19:37:02
5	Benjamin Sølvberg Buan	0.49 s	Rust	2022-11-05 15:00:39
6	Daniel Anker Hermansen	2.66 s	Rust	2023-05-12 20:41:13
7	Devin Ragotzy	3.44 s	Rust	2022-10-10 19:32:04
8	Benjamin Richcreek	4.95 s	Rust	2022-04-28 00:59:01
9	gard heine kalland	5.60 s	Rust	2024-03-26 22:10:57
10	Z S	6.20 s	Rust	2022-08-05 20:06:23

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	TypeScript	2026-03-16 21:29:37

#	User	Length	Language	Date
1	Chenzhang Hu	1402	Bash	2024-04-18 14:35:34

#	User	Length	Language	Date
1	Noah Weninger	279	C	2022-12-04 16:57:37
2	Will Killian	298	C	2022-10-03 01:02:57
3	Hidden user	902	C	2024-03-08 12:59:58
4	Jun Kim	1097	C	2024-12-04 04:11:17
5	Bergur Snorrason	1121	C	2024-09-16 08:50:57
6	Brandon Lee	1224	C	2025-01-31 23:59:51
7	Arni Alfredsson	1266	C	2024-09-12 16:06:36
8	Reuben	1617	C	2023-07-29 00:38:33
9	Hjörtur Björnsson	1636	C	2023-03-28 22:53:42
10	Max Nilsson	2916	C	2022-03-31 09:38:32

#	User	Length	Language	Date
1	Thomas Feld	266	C++	2023-06-08 09:06:32
2	Robert Lee	390	C++	2023-02-05 07:46:41
3	Michael Goldwasser	438	C++	2023-02-12 07:46:25
4	Shang-En Huang	518	C++	2022-02-27 21:15:40
5	Yeung Man Tsung	535	C++	2022-11-29 13:08:07
6	Zac Friggstad	538	C++	2023-04-05 20:19:55
7	Yunxuan Jiang	538	C++	2024-10-19 21:22:23
8	Asger Hautop Drewsen	541	C++	2022-06-15 18:42:17
9	Rafael Kristoforus Yanto	541	C++	2025-02-04 14:22:31
10	Chenghao Wang	561	C++	2023-02-22 22:45:46

#	User	Length	Language	Date
1	la123	1181	Fortran	2025-03-26 08:59:40

#	User	Length	Language	Date
1	Norbert Voelker	1839	Go	2023-07-26 15:06:10

#	User	Length	Language	Date
1	Fabian Mitterwallner	1273	Haskell	2025-08-13 19:11:56
2	Edmunds Cers	1505	Haskell	2025-08-12 12:54:27
3	Juan Miguel Vilar	1887	Haskell	2023-07-26 07:55:34

#	User	Length	Language	Date
1	Antonio Blanca	852	Java	2025-10-17 00:58:27
2	Hidden user	985	Java	2022-04-24 07:46:03
3	Frank Liu	998	Java	2024-10-11 20:19:28
4	Michael O'Brien	1027	Java	2022-03-14 22:15:51
5	John Huddleston	1045	Java	2024-04-17 21:11:25
6	Robert Jay Beralde	1047	Java	2023-08-25 01:15:20
7	Robert Jay Beralde	1079	Java	2023-08-21 04:21:15
8	Justin Too	1132	Java	2025-12-18 08:25:09
9	Shreyas Jamadagni	1151	Java	2025-04-05 15:06:55
10	John Huddleston	1218	Java	2024-04-17 21:37:31

#	User	Length	Language	Date
1	Jiayi Nie	2418	JavaScript (Node.js)	2025-06-18 14:16:24
2	Sabrine Shami Karanganwa	2839	JavaScript (Node.js)	2025-10-08 16:40:53

#	User	Length	Language	Date
1	Jimmy Gustafsson	895	JavaScript (SpiderMonkey)	2022-09-03 06:50:01
2	Christian Pilegaard Cederquist	1062	JavaScript (SpiderMonkey)	2023-02-26 14:49:17

#	User	Length	Language	Date
1	Vahagn Altunyan	721	Julia	2024-06-18 08:23:43
2	Hidden user	909	Julia	2023-11-11 11:14:46
3	Yue Sun	1190	Julia	2025-07-27 08:00:37
4	Konyihuly Falhozvert	1208	Julia	2023-11-11 12:10:57

#	User	Length	Language	Date
1	Nicholas Johnson	1687	Kotlin	2022-03-13 17:35:27
2	Jacob Huebner	1750	Kotlin	2022-03-13 21:48:27

#	User	Length	Language	Date
1	Hayden Dansereau	376	Python 2	2023-12-08 21:15:13
2	Rayyan Naqvi	376	Python 2	2024-06-28 10:43:03
3	Muhammad Ashir	387	Python 2	2024-06-26 20:06:02
4	Andreas Björklund	578	Python 2	2022-03-05 19:28:17
5	Carlos José Rebellon Jalil	766	Python 2	2025-10-30 00:02:52

#	User	Length	Language	Date
1	Thomas Draper	201	Python 3	2023-07-18 20:58:54
2	David Llorens	261	Python 3	2023-07-26 08:11:59
3	Thomas Feld	261	Python 3	2023-08-22 13:56:12
4	Jonathan Hallström	330	Python 3	2023-09-17 10:50:31
5	Iman Khodadi	354	Python 3	2024-02-22 12:45:47
6	Kelly Dance	360	Python 3	2024-06-03 03:14:25
7	Hayden Dansereau	376	Python 3	2023-12-08 21:15:32
8	Alan Zepeda Pelayo	376	Python 3	2024-01-29 21:01:21
9	Bilguudei Sh.	376	Python 3	2024-04-02 15:03:59
10	Hidden user	376	Python 3	2024-04-07 19:13:01

#	User	Length	Language	Date
1	Thomas Feld	173	Ruby	2023-08-22 14:06:59

#	User	Length	Language	Date
1	gard heine kalland	960	Rust	2024-03-26 22:10:57
2	Z S	1419	Rust	2022-08-05 20:06:23
3	Elias Nodland	1614	Rust	2023-12-06 05:49:53
4	Gabriele Baietta	2016	Rust	2023-09-10 14:12:39
5	Alexander Berntsson	2371	Rust	2022-06-27 19:37:02
6	Devin Ragotzy	2587	Rust	2022-10-10 19:32:04
7	Benjamin Richcreek	3496	Rust	2022-04-28 00:59:01
8	Arnav Sastry	3982	Rust	2022-03-12 00:57:31
9	Benjamin Sølvberg Buan	12445	Rust	2022-11-05 15:03:32
10	Daniel Anker Hermansen	22775	Rust	2023-05-12 20:41:13

#	User	Length	Language	Date
1	Hidden user	2808	TypeScript	2026-03-16 21:27:07

Solution running time distribution