Problem A
Efficient Exchange — Problem Statistics

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Submissions	355
Accepted submissions	138
Submission ratio	38.87%
Authors	146
Accepted authors	117
Author ratio	80.14%

#	User	Runtime	Language	Date
1	Zach Tschetter	0.01 s	Haskell	2021-05-17 18:38:46

#	User	Runtime	Language	Date
1	Michael Phillotry	0.06 s	Java	2020-12-31 20:59:30
2	Mark Sturtevant	0.06 s	Java	2021-02-27 21:01:15
3	Bas te Kolste	0.06 s	Java	2022-10-30 12:21:17
4	Bjørn Dons	0.06 s	Java	2023-04-24 19:00:11
5	Fredrik Persson	0.09 s	Java	2023-06-26 09:14:03
6	Quang Long Huynh	0.10 s	Java	2021-09-28 15:13:32
7	Doug Goodman	0.11 s	Java	2021-05-13 16:08:47
8	Mattias Gustafsson	0.13 s	Java	2023-06-29 11:50:13

#	User	Runtime	Language	Date
1	Adam Rankin	0.26 s	Kotlin	2023-09-22 04:46:02

#	User	Runtime	Language	Date
1	Isaac Lee	0.04 s	Python 3	2022-08-30 02:25:28
2	Coleson Mott	0.04 s	Python 3	2025-03-07 21:43:25
3	Eric Leow Yu Quan	0.04 s	Python 3	2025-03-09 09:52:12
4	Hrant Hovhannisyan	0.04 s	Python 3	2025-04-09 10:48:44
5	Glenn	0.04 s	Python 3	2025-04-24 15:41:11
6	Hidden user	0.05 s	Python 3	2022-08-20 16:14:59
7	Benjamin Z White	0.05 s	Python 3	2023-07-07 23:57:33
8	Paco Criado	0.05 s	Python 3	2023-09-09 15:18:36
9	Hidden user	0.05 s	Python 3	2023-10-30 02:50:45
10	Maciej Sidor	0.05 s	Python 3	2024-09-17 20:17:02

#	User	Runtime	Language	Date
1	Thomas Feld	0.06 s	Ruby	2023-07-15 15:22:31

#	User	Runtime	Language	Date
1	Constantijn Dekker	0.00 s	Rust	2021-04-30 21:46:57

#	User	Length	Language	Date
1	Dmitry Lyubshin	425	C++	2023-04-20 22:13:04
2	Hermannstadt Sibiu	431	C++	2021-10-24 13:30:58
3	天天 张	464	C++	2025-03-13 09:35:25
4	Joel Au	466	C++	2020-11-10 10:02:14
5	Hidden user	501	C++	2022-02-27 03:49:05
6	Jim Zheng	525	C++	2021-02-27 19:32:20
7	Christian Yongwhan Lim	534	C++	2023-06-19 03:20:55
8	我撼昆仑	557	C++	2025-03-07 05:04:41
9	Andree Stef	559	C++	2023-07-31 12:11:06
10	Jan van Baast	559	C++	2023-07-31 12:56:12

#	User	Length	Language	Date
1	Zach Tschetter	566	Haskell	2021-05-17 18:38:46

#	User	Length	Language	Date
1	Quang Long Huynh	586	Java	2021-09-28 15:13:32
2	Fredrik Persson	851	Java	2023-06-26 09:14:03
3	Doug Goodman	1274	Java	2021-05-13 16:08:47
4	Mattias Gustafsson	1585	Java	2023-06-29 11:50:13
5	Bas te Kolste	1858	Java	2022-10-30 12:21:17
6	Mark Sturtevant	2159	Java	2021-02-27 21:01:15
7	Bjørn Dons	5758	Java	2023-04-24 19:00:11
8	Michael Phillotry	8934	Java	2020-12-31 20:59:30

#	User	Length	Language	Date
1	Adam Rankin	622	Kotlin	2023-09-22 04:46:02

#	User	Length	Language	Date
1	Hidden user	87	Python 3	2023-10-30 02:50:45
2	Benjamin Z White	112	Python 3	2023-07-08 00:05:26
3	Nicholas Russell Saerang	119	Python 3	2025-03-09 07:13:48
4	Glenn	139	Python 3	2025-04-24 15:41:11
5	Paco Criado	172	Python 3	2023-09-09 15:18:36
6	Gustavo Fadel	174	Python 3	2021-12-03 03:27:35
7	Leslie Yip	229	Python 3	2023-07-19 05:26:28
8	Hrant Hovhannisyan	246	Python 3	2025-04-09 10:48:44
9	Maciej Sidor	268	Python 3	2024-09-17 20:17:02
10	John Eric Estrada	273	Python 3	2023-08-04 03:39:38

#	User	Length	Language	Date
1	Thomas Feld	78	Ruby	2023-07-15 15:31:41

#	User	Length	Language	Date
1	Constantijn Dekker	718	Rust	2021-04-30 21:46:57

Solution running time distribution