Problem C
IMO Harder Problem — Problem Statistics

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Submissions	142
Accepted submissions	62
Submission ratio	43.66%
Authors	53
Accepted authors	39
Author ratio	73.58%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.01 s	C	2019-12-05 16:39:37

#	User	Runtime	Language	Date
1	Morgen Sudyanto	0.01 s	C++	2019-11-03 03:01:04
2	Minh Nguyen	0.01 s	C++	2019-11-03 04:10:16
3	Tiago Gonçalves	0.01 s	C++	2019-11-03 05:20:06
4	Tony Tony	0.01 s	C++	2019-11-03 08:30:28
5	Prabowo Djonatan	0.01 s	C++	2019-11-03 17:06:29
6	Benjamin Qi	0.01 s	C++	2019-11-05 22:03:51
7	Nguyen Xuan Tung	0.01 s	C++	2019-11-06 04:02:41
8	Vu Hoang Kien	0.01 s	C++	2019-11-09 05:29:38
9	Le Phuoc Dinh	0.01 s	C++	2019-11-10 23:52:55
10	Atli Fannar Franklín	0.01 s	C++	2019-11-13 13:39:55

#	User	Runtime	Language	Date
1	Bjørn Dons	0.03 s	Go	2023-07-30 18:16:41

#	User	Runtime	Language	Date
1	Nguyen Thanh Trung	0.05 s	Python 2	2019-10-30 07:53:59
2	Andreas Björklund	0.05 s	Python 2	2020-08-22 09:47:33

#	User	Runtime	Language	Date
1	Bryan Juniano	0.05 s	Python 3	2025-04-23 13:00:17
2	Nicholas Russell Saerang	0.07 s	Python 3	2023-07-24 19:39:37
3	Rafael Kristoforus Yanto	0.12 s	Python 3	2025-02-04 16:15:51
4	vance	0.16 s	Python 3	2020-01-21 05:25:44

#	User	Runtime	Language	Date
1	Thomas Feld	0.21 s	Ruby	2023-07-31 15:53:37

#	User	Length	Language	Date
1	Ivan Petrov	694	C	2019-12-05 16:39:37

#	User	Length	Language	Date
1	Jeremy Lim	330	C++	2024-06-08 08:27:51
2	Yeoh Han Yi	337	C++	2025-04-15 14:21:12
3	Hidden user	431	C++	2024-12-30 08:44:49
4	Hidden user	444	C++	2019-11-09 17:08:40
5	Minh Nguyen	446	C++	2019-11-03 04:10:16
6	Nguyen Xuan Tung	489	C++	2019-11-06 07:25:23
7	Atli Fannar Franklín	502	C++	2019-11-13 13:39:55
8	Christian Yongwhan Lim	518	C++	2023-08-15 10:14:30
9	Prabowo Djonatan	545	C++	2019-11-03 17:06:29
10	Anson Ho	608	C++	2019-11-03 05:54:08

#	User	Length	Language	Date
1	Bjørn Dons	770	Go	2023-07-30 18:16:41

#	User	Length	Language	Date
1	Andreas Björklund	170	Python 2	2020-08-22 09:47:33
2	Nguyen Thanh Trung	333	Python 2	2019-10-30 07:53:59

#	User	Length	Language	Date
1	Nicholas Russell Saerang	101	Python 3	2023-07-24 20:00:46
2	Bryan Juniano	146	Python 3	2025-04-23 13:00:17
3	Rafael Kristoforus Yanto	159	Python 3	2025-02-04 16:15:51
4	vance	247	Python 3	2020-01-21 06:35:09

#	User	Length	Language	Date
1	Thomas Feld	66	Ruby	2023-07-31 16:02:19

Solution running time distribution