Problem A
Hello World! — Problem Statistics

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Submissions	114
Accepted submissions	65
Submission ratio	57.02%
Authors	54
Accepted authors	53
Author ratio	98.15%

#	User	Runtime	Language	Date
1	张华彦	0.00 s	C++	2014-02-02 07:30:42
2	Van Gao	0.00 s	C++	2014-02-12 16:07:17
3	李升运	0.00 s	C++	2014-03-20 04:41:54
4	Lingwei Kong	0.00 s	C++	2014-10-23 01:47:33
5	Haobo Jiang	0.00 s	C++	2015-09-21 18:08:08
6	Filip Hovorka	0.00 s	C++	2021-05-31 16:53:49

#	User	Runtime	Language	Date
1	Nick Shi	0.00 s	Haskell	2014-04-20 23:48:35
2	姚锦铭	0.00 s	Haskell	2015-09-22 11:26:12
3	Jun Liang	0.00 s	Haskell	2015-09-30 10:03:48

#	User	Runtime	Language	Date
1	Leran Cai	0.05 s	Java	2014-02-05 11:36:42
2	张华彦	0.05 s	Java	2014-02-20 10:29:57
3	Hidden user	0.05 s	Java	2014-08-28 15:59:06
4	Haoyue Zhu	0.05 s	Java	2014-10-23 02:07:35
5	Anqi Gao	0.05 s	Java	2015-09-24 15:12:45
6	姚锦铭	0.05 s	Java	2015-09-28 23:40:27

#	User	Runtime	Language	Date
1	姚锦铭	0.01 s	PHP	2015-09-29 01:29:38

#	User	Runtime	Language	Date
1	Imanol Luengo	0.02 s	Python 2	2014-02-05 18:23:51

#	User	Runtime	Language	Date
1	William Templeton	0.05 s	Python 3	2021-09-15 13:54:21

#	User	Runtime	Language	Date
1	Alex	0.00 s	Rust	2020-11-15 00:06:06

#	User	Length	Language	Date
1	James Harvey	43	C	2021-09-09 01:13:30
2	Chen Hanslen	57	C	2015-09-24 15:36:45
3	Jason Houchin	64	C	2019-10-23 15:39:08
4	Yujie Qiu	66	C	2015-09-29 16:47:38
5	Aaron Osher	66	C	2019-10-23 15:36:35
6	Anatoliy Kushnir	72	C	2019-10-28 14:40:40
7	Harry Hsu	76	C	2019-10-28 14:04:16
8	Cara Hayes-Williams	77	C	2019-10-28 14:13:25
9	Apollon Nakopoulos	78	C	2019-10-28 11:15:05
10	许逸轩	81	C	2019-10-27 23:35:34

#	User	Length	Language	Date
1	Haobo Jiang	66	C++	2015-09-21 18:08:08
2	张华彦	76	C++	2014-02-02 07:30:42
3	Van Gao	90	C++	2014-02-12 16:07:17
4	Lingwei Kong	93	C++	2014-10-23 01:47:33
5	李升运	177	C++	2014-03-20 04:41:54
6	Filip Hovorka	290	C++	2021-05-31 16:53:49

#	User	Length	Language	Date
1	Nick Shi	48	Haskell	2014-04-20 23:48:35
2	Jun Liang	49	Haskell	2015-09-30 10:03:48
3	姚锦铭	63	Haskell	2015-09-22 11:26:12

#	User	Length	Language	Date
1	姚锦铭	111	Java	2015-09-28 23:40:27
2	Haoyue Zhu	113	Java	2014-10-23 02:07:35
3	Hidden user	119	Java	2014-08-28 15:59:06
4	Anqi Gao	148	Java	2015-09-24 15:12:45
5	张华彦	158	Java	2014-02-20 10:29:57
6	Leran Cai	351	Java	2014-02-05 11:36:42

#	User	Length	Language	Date
1	姚锦铭	31	PHP	2015-09-29 01:29:38

#	User	Length	Language	Date
1	Imanol Luengo	20	Python 2	2014-02-05 18:23:51

#	User	Length	Language	Date
1	William Templeton	21	Python 3	2021-09-15 13:54:21

#	User	Length	Language	Date
1	Alex	44	Rust	2020-11-15 00:06:06

Solution running time distribution