Problem A
Echo Echo Echo — Problem Statistics

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Submissions	181
Accepted submissions	127
Submission ratio	70.17%
Authors	112
Accepted authors	111
Author ratio	99.11%

#	User	Runtime	Language	Date
1	Hidden user	0.00 s	C++	2021-10-13 09:16:52
2	Zhang Lifang	0.00 s	C++	2021-10-28 09:04:09
3	Natasha Tan Yan Tze	0.00 s	C++	2022-02-03 14:02:57
4	Wang Tingjia	0.00 s	C++	2022-04-19 11:21:13

#	User	Runtime	Language	Date
1	Li Jiayu	0.09 s	Java	2021-09-18 09:28:53
2	Zhuang Yihui	0.10 s	Java	2021-09-24 10:26:47
3	Isaac Tay Zhi Xian	0.10 s	Java	2022-01-14 12:44:08
4	Cheyenne	0.17 s	Java	2023-02-11 04:25:00

#	User	Runtime	Language	Date
1	Alvin Ng Yong Han	0.04 s	Python 3	2022-08-29 03:13:49
2	Hidden user	0.05 s	Python 3	2021-07-25 06:10:45
3	Nguyen Van Binh	0.05 s	Python 3	2021-08-05 15:13:49
4	Hidden user	0.05 s	Python 3	2021-09-14 16:26:01
5	Chan Thian Yong	0.05 s	Python 3	2021-09-14 16:42:20
6	Hidden user	0.05 s	Python 3	2021-09-14 17:35:49
7	Nicholas Foo Chuan Le	0.05 s	Python 3	2021-09-14 19:52:17
8	Yan Zehong	0.05 s	Python 3	2021-09-14 21:56:48
9	Tan Yi Geng	0.05 s	Python 3	2021-09-15 01:55:25
10	Hidden user	0.05 s	Python 3	2021-09-15 04:26:19

#	User	Length	Language	Date
1	Wang Tingjia	148	C++	2022-04-19 11:21:13
2	Hidden user	229	C++	2021-10-13 09:16:52
3	Zhang Lifang	234	C++	2021-10-28 09:10:06
4	Natasha Tan Yan Tze	429	C++	2022-02-03 14:02:57

#	User	Length	Language	Date
1	Zhuang Yihui	262	Java	2021-09-24 10:26:47
2	Isaac Tay Zhi Xian	262	Java	2022-01-14 12:44:08
3	Cheyenne	306	Java	2023-02-11 04:25:00
4	Li Jiayu	517	Java	2021-09-18 09:28:53

#	User	Length	Language	Date
1	Jin Yuhan	22	Python 3	2021-09-21 03:46:22
2	Zhang Zhe	22	Python 3	2021-09-21 04:07:18
3	Aidan Wong	22	Python 3	2021-09-21 10:28:14
4	Wong Jin Jye	22	Python 3	2021-09-21 10:38:06
5	Wang Tao	22	Python 3	2021-09-21 15:27:19
6	Hidden user	22	Python 3	2021-09-22 04:47:33
7	Yan Yibo	22	Python 3	2021-09-22 06:32:30
8	Ng Keok Boon	22	Python 3	2021-09-22 07:01:18
9	Li Jiayi	22	Python 3	2021-09-22 08:23:04
10	Wang Zhiliang	22	Python 3	2021-09-22 08:42:48

Solution running time distribution