Problem A
Word Cloud — Problem Statistics

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Submissions	1635
Accepted submissions	813
Submission ratio	49.72%
Authors	785
Full solves [?]	714
Full solve Ratio	90.96%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C	2015-11-10 23:56:38
2	Ivan Petrov	0.00 s	C	2019-07-05 08:02:24
3	Franz Miltz	0.00 s	C	2019-11-25 23:45:20
4	Sambit Palit	0.00 s	C	2020-09-30 06:29:25
5	Wise Kiwi	0.00 s	C	2021-06-01 01:40:46
6	Jesse Case	0.00 s	C	2021-11-30 21:33:13
7	Hidden user	0.00 s	C	2025-04-25 13:50:32
8	Md Shahab Uddin	0.00 s	C	2025-06-16 12:16:02

#	User	Runtime	Language	Date
1	Dan Wolff	0.02 s	C#	2018-10-10 21:09:07
2	Leslie Yip	0.02 s	C#	2022-09-17 08:37:59
3	Hidden user	0.03 s	C#	2020-08-11 17:58:31

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2023-02-07 17:46:14

#	User	Runtime	Language	Date
1	Norbert Voelker	0.08 s	Go	2021-07-13 23:26:50

#	User	Runtime	Language	Date
1	Jan Hlavacek	0.00 s	Haskell	2017-02-05 00:09:46
2	Brent Yorgey	0.00 s	Haskell	2017-11-21 22:08:56
3	Hidden user	0.00 s	Haskell	2023-01-20 00:15:35
4	Li Jun	0.00 s	Haskell	2023-06-27 21:19:25
5	Steinar Simonnes	0.00 s	Haskell	2025-07-17 12:37:38
6	Hidden user	0.01 s	Haskell	2019-10-26 15:44:33
7	Juan Miguel Vilar	0.01 s	Haskell	2020-10-07 18:23:05
8	Andrés Marzal Varó	0.01 s	Haskell	2020-10-09 11:36:54
9	Jaime Perera	0.01 s	Haskell	2020-10-09 16:37:32
10	Sergio Martín Sempere	0.01 s	Haskell	2020-10-09 22:39:44

#	User	Runtime	Language	Date
1	Đỗ Duy Tân	0.05 s	Java	2015-10-14 06:17:48
2	Tú Huỳnh	0.05 s	Java	2015-10-14 06:19:14
3	Nick Wu	0.06 s	Java	2015-10-10 19:06:53
4	Hidden user	0.06 s	Java	2015-10-14 06:10:05
5	Dennis Shi	0.06 s	Java	2016-01-08 22:26:25
6	Simon Xue	0.06 s	Java	2016-04-15 01:53:22
7	Martijn Muijsers	0.06 s	Java	2016-10-10 22:48:33
8	Michael Sullivan	0.06 s	Java	2016-12-13 22:39:15
9	James Black	0.06 s	Java	2017-05-22 04:39:25
10	Filip Jansson	0.06 s	Java	2017-06-22 10:19:18

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-03-07 16:57:47
2	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-22 23:01:22
3	Zach Tschetter	0.03 s	JavaScript (SpiderMonkey)	2023-11-24 00:28:46

#	User	Runtime	Language	Date
1	Johnny Baloney	0.15 s	Kotlin	2021-12-03 22:39:50
2	Adam Rankin	0.19 s	Kotlin	2023-09-09 06:48:19
3	Neil Harmon	0.21 s	Kotlin	2019-07-22 13:05:58
4	Ravisai Tiruvuri	0.22 s	Kotlin	2024-03-23 06:27:35
5	Jacob Huebner	0.22 s	Kotlin	2024-11-06 23:47:55
6	Ali M. Nekoh	0.23 s	Kotlin	2025-06-11 16:46:21

#	User	Runtime	Language	Date
1	Mgh Et	0.01 s	PHP	2015-10-13 20:44:18

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.03 s	Python 2	2015-10-12 22:09:30
2	Hans Rusten	0.03 s	Python 2	2015-11-17 00:09:19
3	Martin Jackson	0.03 s	Python 2	2016-08-02 03:30:33
4	Marcus Johansson	0.03 s	Python 2	2016-08-05 11:49:41
5	Maisam Arif	0.03 s	Python 2	2017-01-25 18:05:15
6	Eric Dand	0.03 s	Python 2	2017-09-23 23:19:29
7	Jung Hee Ryu	0.03 s	Python 2	2017-09-30 21:43:53
8	Xinhao Liu	0.03 s	Python 2	2017-09-30 22:48:00
9	Minh Le	0.03 s	Python 2	2017-09-30 23:11:26
10	Thomas Yuan	0.03 s	Python 2	2017-09-30 23:32:39

#	User	Runtime	Language	Date
1	Neil Girdhar	0.02 s	Python 3	2015-10-10 20:20:25
2	Theodore Derego	0.02 s	Python 3	2015-10-10 21:47:31
3	Johnson Zhong	0.02 s	Python 3	2015-10-10 21:50:12
4	Hunter Herman	0.02 s	Python 3	2015-10-10 21:52:04
5	Jim Zhang	0.02 s	Python 3	2015-10-10 22:26:12
6	Wayne	0.02 s	Python 3	2016-02-01 18:18:03
7	Rebekah Loving	0.02 s	Python 3	2016-04-21 04:18:39
8	Ram Basnet	0.02 s	Python 3	2016-12-19 07:05:01
9	Ciara Godwin	0.02 s	Python 3	2017-08-12 17:31:22
10	Dalton Cole	0.02 s	Python 3	2017-09-09 09:22:09

#	User	Runtime	Language	Date
1	Mridula Prabhu	0.03 s	Ruby	2017-06-04 10:56:13

#	User	Runtime	Language	Date
1	Chun Mun Soon	0.00 s	Rust	2021-06-26 07:39:16
2	David Rasch	0.00 s	Rust	2023-08-28 17:09:22
3	Bas Dirks	0.00 s	Rust	2024-01-25 12:14:34
4	jaswanth	0.00 s	Rust	2024-03-27 04:14:17
5	Hidden user	0.00 s	Rust	2025-02-23 17:18:54

#	User	Length	Language	Date
1	Wise Kiwi	1256	C	2021-06-01 01:40:46
2	Hidden user	1347	C	2025-04-25 13:50:32
3	Franz Miltz	1553	C	2019-11-25 23:45:20
4	Md Shahab Uddin	1577	C	2025-06-16 12:16:02
5	Sambit Palit	1589	C	2020-09-30 06:29:25
6	Ivan Petrov	1738	C	2019-07-05 08:02:24
7	Jesse Case	2021	C	2021-11-30 21:33:13
8	Hidden user	2986	C	2015-11-10 23:56:38

#	User	Length	Language	Date
1	Hidden user	1635	C#	2020-08-11 17:58:31
2	Leslie Yip	1857	C#	2022-09-17 08:37:59
3	Dan Wolff	4012	C#	2018-10-10 21:09:07

#	User	Length	Language	Date
1	Mugeon Kim	567	C++	2024-01-29 04:05:36
2	William Gan	608	C++	2017-01-11 17:32:29
3	Anna Roczek	662	C++	2023-07-11 19:50:04
4	Christopher Boo	706	C++	2017-01-12 09:02:05
5	Giang Đào	756	C++	2018-10-15 05:57:06
6	Mel Rogene Natividad	762	C++	2019-03-10 17:02:55
7	David Venhoek	778	C++	2016-01-18 15:30:37
8	Brandon Zhang	786	C++	2020-04-24 01:27:24
9	Hyunjun Lee	790	C++	2022-10-18 14:20:26
10	Grae Yeandle	791	C++	2016-12-14 17:38:09

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	2275	F#	2023-02-07 17:46:14

#	User	Length	Language	Date
1	Norbert Voelker	1627	Go	2021-07-13 23:26:50

#	User	Length	Language	Date
1	Li Jun	1049	Haskell	2023-06-27 21:23:42
2	Hidden user	1059	Haskell	2023-01-20 00:15:35
3	Steinar Simonnes	1291	Haskell	2025-07-17 12:37:38
4	Juan Miguel Vilar	1465	Haskell	2020-10-07 18:23:05
5	Andrés Marzal Varó	1548	Haskell	2020-10-09 11:36:54
6	Jan Hlavacek	1677	Haskell	2017-02-05 00:09:46
7	Brent Yorgey	1736	Haskell	2017-11-21 22:08:56
8	Erik von Brömssen	1832	Haskell	2021-06-21 01:37:44
9	Sergio Martín Sempere	1977	Haskell	2020-10-09 22:39:44
10	Jaime Perera	2902	Haskell	2020-10-09 16:37:32

#	User	Length	Language	Date
1	Prakash Sanyasi	955	Java	2017-04-13 22:57:41
2	Zachary Hancock	1076	Java	2015-10-10 19:43:48
3	Alan Zhao	1117	Java	2015-10-10 19:56:58
4	Avery Whitaker	1136	Java	2017-09-30 22:22:36
5	Jacob Burroughs	1158	Java	2016-04-02 20:52:26
6	Benjamin Scott Pruett	1168	Java	2015-10-10 19:30:37
7	Nathaniel Lahn	1221	Java	2015-10-10 19:31:52
8	Andreas Jansson	1272	Java	2015-10-11 01:07:27
9	Brennan Cleland	1278	Java	2023-05-30 05:33:20
10	Darrin Wiley	1279	Java	2015-10-10 22:23:39

#	User	Length	Language	Date
1	Zach Tschetter	926	JavaScript (SpiderMonkey)	2023-11-24 00:28:46
2	Christian Pilegaard Cederquist	943	JavaScript (SpiderMonkey)	2023-03-22 23:01:22
3	Bjørn Chr. Soltvedt	1337	JavaScript (SpiderMonkey)	2016-03-07 16:57:47

#	User	Length	Language	Date
1	Ali M. Nekoh	1176	Kotlin	2025-06-11 16:46:21
2	Jacob Huebner	1374	Kotlin	2024-11-06 23:47:55
3	Adam Rankin	1388	Kotlin	2023-09-09 06:48:19
4	Johnny Baloney	1659	Kotlin	2021-12-03 22:39:50
5	Neil Harmon	2096	Kotlin	2019-07-22 13:05:58
6	Ravisai Tiruvuri	6107	Kotlin	2024-03-23 06:27:35

#	User	Length	Language	Date
1	Mgh Et	939	PHP	2015-10-13 20:44:18

#	User	Length	Language	Date
1	Thomas Feld	384	Python 2	2019-09-17 09:25:03
2	Jesper Öqvist	694	Python 2	2018-10-27 10:30:46
3	Ismail Tigrek	938	Python 2	2017-11-10 19:57:08
4	Johan Lyts	989	Python 2	2020-06-22 15:05:02
5	Martin Jackson	1004	Python 2	2016-08-02 03:30:33
6	Marcus Johansson	1037	Python 2	2016-08-05 11:49:41
7	Yanmarshus Bachtiar	1065	Python 2	2020-08-22 02:27:44
8	Jung Hee Ryu	1219	Python 2	2017-09-30 21:43:53
9	Eric Dand	1224	Python 2	2017-09-23 23:19:29
10	Xinhao Liu	1327	Python 2	2017-09-30 22:48:00

#	User	Length	Language	Date
1	Ahmed Chamseddine	320	Python 3	2024-10-31 22:33:52
2	Jason Clarke	374	Python 3	2024-05-02 16:32:39
3	Jun Yan	401	Python 3	2023-10-13 10:56:46
4	Thibault Raffaillac	424	Python 3	2020-01-29 10:37:30
5	Kelly Dance	475	Python 3	2022-08-17 20:36:57
6	Andreas Björklund	503	Python 3	2024-11-09 18:03:41
7	Nicholas Russell Saerang	509	Python 3	2023-07-12 10:39:11
8	Yong Mao	511	Python 3	2023-10-02 16:15:33
9	Samarth Upadhya	522	Python 3	2023-12-12 12:19:37
10	Yohannes Melese	546	Python 3	2022-09-04 13:14:00

#	User	Length	Language	Date
1	Mridula Prabhu	2094	Ruby	2017-06-04 10:56:13

#	User	Length	Language	Date
1	David Rasch	1201	Rust	2023-08-28 17:09:22
2	Bas Dirks	1709	Rust	2024-01-25 12:14:34
3	Hidden user	2057	Rust	2025-02-23 17:18:54
4	jaswanth	2164	Rust	2024-03-27 04:14:17
5	Chun Mun Soon	2950	Rust	2021-06-26 07:39:16

Solution running time distribution