Problem A
Hello World! — Problem Statistics

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Submissions	2164
Accepted submissions	1296
Submission ratio	59.89%
Authors	927
Full solves [?]	920
Full solve Ratio	99.24%

#	User	Runtime	Language	Date
1	Alex Groiser	0.02 s	Algol 68	2025-09-03 17:32:34

#	User	Runtime	Language	Date
1	Simon Lavoie	0.01 s	Bash	2024-09-04 18:55:46
2	selyann berrada	0.01 s	Bash	2024-09-04 18:57:48
3	Harry Boutemy	0.01 s	Bash	2024-09-09 17:19:06

#	User	Runtime	Language	Date
1	Massimo Vicenzo	0.00 s	C	2021-09-06 19:01:27
2	Jason Hum	0.00 s	C	2022-01-11 21:36:05
3	Darcy Mazloum	0.00 s	C	2022-01-11 21:52:26
4	Ruo Yang Jiang	0.00 s	C	2022-09-03 21:18:04
5	Georgi Maslyankov	0.00 s	C	2022-09-06 19:23:42
6	Nazim Djeradi	0.00 s	C	2022-09-10 21:31:17
7	Ryan Bruneau	0.00 s	C	2023-08-30 23:37:10
8	Rency Waneskehian	0.00 s	C	2023-08-31 15:14:10
9	Gaspard Ratovondrahona Rasoarahona	0.00 s	C	2023-08-31 21:31:36
10	Max Eskenazi	0.00 s	C	2024-09-04 18:55:44

#	User	Runtime	Language	Date
1	Helen Lin	0.02 s	C#	2021-09-08 22:41:00
2	Andrew Lin	0.02 s	C#	2021-09-22 21:47:09
3	Joe Lerner	0.02 s	C#	2022-09-08 11:37:16
4	Felicia Chen-She	0.02 s	C#	2022-10-22 17:20:55
5	Tudor Trica-Mavrodin	0.03 s	C#	2023-08-30 22:16:49

#	User	Runtime	Language	Date
1	Brendan Cao	0.00 s	COBOL	2024-09-04 18:56:20

#	User	Runtime	Language	Date
1	Andrew Mackenzie	0.00 s	Common Lisp	2022-09-07 01:55:52
2	Idil Aydin	0.01 s	Common Lisp	2021-10-08 03:51:44

#	User	Runtime	Language	Date
1	Samuel Park	0.00 s	Fortran	2022-09-05 22:06:42

#	User	Runtime	Language	Date
1	Felis Sedano Luo Yi	0.00 s	Go	2023-08-31 18:18:03
2	Felicia Chen-She	0.02 s	Go	2022-09-25 01:30:14
3	Zi Chen Hu	0.02 s	Go	2022-10-22 02:03:35

#	User	Runtime	Language	Date
1	Allan Wei	0.00 s	Haskell	2021-10-08 03:41:15
2	Fraser Lee	0.00 s	Haskell	2022-01-06 10:26:58
3	Felis Sedano Luo Yi	0.00 s	Haskell	2023-08-31 03:54:47
4	Dan Greco	0.00 s	Haskell	2025-09-05 15:05:10

#	User	Runtime	Language	Date
1	Minju Kang	0.04 s	Java	2024-09-04 18:50:27
2	Nanqing Hu	0.04 s	Java	2024-09-04 18:52:50
3	Jiahao Jiang	0.04 s	Java	2024-09-04 18:53:35
4	Daniel Aarao Reis Arturi	0.04 s	Java	2024-09-04 18:54:00
5	Joshua Manascu	0.04 s	Java	2024-09-04 18:55:16
6	Gabe Woloz	0.04 s	Java	2024-09-04 18:55:49
7	Jinwoo Kim	0.04 s	Java	2024-09-04 18:55:59
8	Constantin Buruiana	0.04 s	Java	2024-09-04 18:56:12
9	Nancy Gong	0.04 s	Java	2024-09-04 18:56:43
10	Monica Li	0.04 s	Java	2024-09-04 18:59:31

#	User	Runtime	Language	Date
1	Nicholas Foisy	0.04 s	JavaScript (Node.js)	2024-09-04 18:43:52
2	Anthony Azrak	0.04 s	JavaScript (Node.js)	2024-09-04 18:46:59
3	Barry Chen	0.04 s	JavaScript (Node.js)	2024-09-04 18:55:34
4	Milton Rosenbaum	0.04 s	JavaScript (Node.js)	2024-09-04 18:57:11
5	Shanzid Shaiham	0.08 s	JavaScript (Node.js)	2022-09-03 15:53:07
6	Felicia Chen-She	0.08 s	JavaScript (Node.js)	2022-10-22 17:19:11
7	Ibrahim Younas, Mr	0.08 s	JavaScript (Node.js)	2023-09-08 02:02:56
8	Hidden user	0.08 s	JavaScript (Node.js)	2023-09-08 13:23:29
9	Wen Wu	0.41 s	JavaScript (Node.js)	2021-09-09 19:48:45
10	Yizhong Ding	0.41 s	JavaScript (Node.js)	2021-09-10 19:17:49

#	User	Runtime	Language	Date
1	Felis Sedano Luo Yi	0.50 s	Julia	2023-09-09 02:32:05

#	User	Runtime	Language	Date
1	Tuvshin Ganbold	0.00 s	OCaml	2021-09-04 21:30:41
2	Jason Hum	0.00 s	OCaml	2022-01-11 21:38:43
3	Shazain Aziz	0.00 s	OCaml	2022-09-06 20:12:11
4	Felicia Chen-She	0.00 s	OCaml	2022-10-22 17:17:23
5	David Lanyi	0.00 s	OCaml	2023-08-31 02:44:42
6	Dan Greco	0.00 s	OCaml	2025-09-03 17:23:04

#	User	Runtime	Language	Date
1	Vương Thiện Kiên	0.00 s	Pascal	2024-03-24 21:00:12

#	User	Runtime	Language	Date
1	Hanzhi Zhang	0.02 s	Python 2	2022-09-02 19:06:14
2	Yangyuru Liu	0.02 s	Python 2	2022-09-06 15:06:12
3	Jacqueline Wu	0.02 s	Python 2	2022-09-12 01:05:49
4	Sarah Al Taleb	0.02 s	Python 2	2022-10-22 00:06:59
5	Ping Gu	0.02 s	Python 2	2022-10-22 01:29:32
6	Yiwen Zhang	0.02 s	Python 2	2023-08-31 12:33:22
7	Brandon Sovran	0.03 s	Python 2	2022-01-08 01:39:39
8	Claire Rodham	0.07 s	Python 2	2025-06-23 18:39:14
9	Adele Valero	0.07 s	Python 2	2025-09-03 17:24:49
10	Sarah Abou-Zahr	0.07 s	Python 2	2025-09-03 17:25:07

#	User	Runtime	Language	Date
1	Ryan Senoune	0.04 s	Python 3	2022-09-02 19:00:31
2	My Duc Tran	0.04 s	Python 3	2022-09-02 19:00:40
3	Lucas Chew	0.04 s	Python 3	2022-09-02 19:00:51
4	Zehai Wen	0.04 s	Python 3	2022-09-02 19:03:57
5	Dailun Li	0.04 s	Python 3	2022-09-02 19:04:36
6	Felipe Fontes	0.04 s	Python 3	2022-09-02 19:42:33
7	Chuntao Hu	0.04 s	Python 3	2022-09-02 19:50:06
8	Felicia Chen-She	0.04 s	Python 3	2022-09-02 19:55:00
9	Youssef Samaan	0.04 s	Python 3	2022-09-02 20:04:01
10	Jaewon Moon	0.04 s	Python 3	2022-09-02 20:05:33

#	User	Runtime	Language	Date
1	Zehai Wen	0.04 s	Python 3 with NumPy	2022-09-03 11:40:06
2	Bowei Ke	0.04 s	Python 3 with NumPy	2022-09-04 18:35:17
3	Maitree Hirunteeyakul	0.04 s	Python 3 with NumPy	2022-09-05 08:39:01
4	Minna Feng	0.04 s	Python 3 with NumPy	2022-09-06 13:00:37
5	Yuyang Cao	0.04 s	Python 3 with NumPy	2022-09-07 03:32:14
6	Chamara Vithanage	0.04 s	Python 3 with NumPy	2022-09-10 05:46:44
7	Zhenbang Wu	0.04 s	Python 3 with NumPy	2022-09-10 17:43:08
8	Hidden user	0.04 s	Python 3 with NumPy	2022-09-12 16:40:19
9	Kian Fattahy	0.04 s	Python 3 with NumPy	2022-09-21 23:05:47
10	Ava Gilmour	0.04 s	Python 3 with NumPy	2022-10-22 14:57:11

#	User	Runtime	Language	Date
1	Henri Lemoine	0.06 s	Ruby	2022-09-05 00:10:04
2	Andrew Mackenzie	0.06 s	Ruby	2022-09-07 02:52:58
3	Daniel Zhang	0.06 s	Ruby	2023-09-04 01:39:08
4	Torin Andrews	0.07 s	Ruby	2025-09-03 17:24:24

#	User	Runtime	Language	Date
1	Sindbad Walter	0.00 s	Rust	2023-08-31 17:24:36
2	Callum Airlie	0.00 s	Rust	2024-09-04 18:55:00
3	Constantin Buruiana	0.00 s	Rust	2024-09-05 14:11:10
4	Louis Bouchard	0.00 s	Rust	2024-09-06 01:30:23

#	User	Runtime	Language	Date
1	Felis Sedano Luo Yi	0.82 s	Scala	2023-09-02 06:25:12

#	User	Runtime	Language	Date
1	Felis Sedano Luo Yi	0.08 s	TypeScript	2023-08-31 03:30:47

#	User	Length	Language	Date
1	Alex Groiser	46	Algol 68	2025-09-03 17:32:34

#	User	Length	Language	Date
1	Simon Lavoie	19	Bash	2024-09-04 18:55:46
2	selyann berrada	19	Bash	2024-09-04 18:57:48
3	Harry Boutemy	32	Bash	2024-09-09 17:19:06

#	User	Length	Language	Date
1	Gaspard Ratovondrahona Rasoarahona	63	C	2023-08-31 21:31:36
2	Ryan Bruneau	65	C	2023-08-30 23:37:10
3	Darcy Mazloum	67	C	2022-01-11 21:52:26
4	Ruo Yang Jiang	72	C	2022-09-03 21:18:04
5	Nazim Djeradi	76	C	2022-09-10 21:31:17
6	Rency Waneskehian	76	C	2023-08-31 15:14:10
7	Georgi Maslyankov	79	C	2022-09-06 19:23:42
8	Max Eskenazi	80	C	2024-09-04 18:55:44
9	Massimo Vicenzo	82	C	2021-09-06 19:01:27
10	Jason Hum	83	C	2022-01-11 21:36:05

#	User	Length	Language	Date
1	Joe Lerner	130	C#	2022-09-08 11:37:16
2	Helen Lin	136	C#	2021-09-08 22:41:00
3	Felicia Chen-She	174	C#	2022-10-22 17:20:55
4	Andrew Lin	181	C#	2021-09-22 21:47:09
5	Tudor Trica-Mavrodin	195	C#	2023-08-30 22:16:49

#	User	Length	Language	Date
1	Zi Chen Hu	63	C++	2022-10-22 02:02:33
2	Alexandre Barbeau	67	C++	2023-08-31 20:47:44
3	Tung Vu	68	C++	2023-09-02 23:50:48
4	Ege Guney	70	C++	2023-09-03 16:29:53
5	Allan Wei	71	C++	2021-09-04 00:34:13
6	Kevin Li	71	C++	2021-09-10 16:27:24
7	Mike Gao	77	C++	2021-09-03 20:17:11
8	Zehai Wen	77	C++	2022-10-22 12:22:36
9	Jiechen Zhang	78	C++	2022-01-11 20:29:38
10	Callum Airlie	78	C++	2024-09-05 16:01:31

#	User	Length	Language	Date
1	Brendan Cao	135	COBOL	2024-09-04 18:56:20

#	User	Length	Language	Date
1	Andrew Mackenzie	25	Common Lisp	2022-09-07 01:55:52
2	Idil Aydin	29	Common Lisp	2021-10-08 03:51:44

#	User	Length	Language	Date
1	Samuel Park	59	Fortran	2022-09-05 22:06:42

#	User	Length	Language	Date
1	Zi Chen Hu	73	Go	2022-10-22 02:03:35
2	Felicia Chen-She	78	Go	2022-09-25 01:30:14
3	Felis Sedano Luo Yi	78	Go	2023-08-31 18:18:03

#	User	Length	Language	Date
1	Allan Wei	30	Haskell	2021-10-08 03:41:15
2	Felis Sedano Luo Yi	30	Haskell	2023-08-31 03:54:47
3	Fraser Lee	45	Haskell	2022-01-06 10:26:58
4	Dan Greco	50	Haskell	2025-09-05 15:05:10

#	User	Length	Language	Date
1	Biruk Berhanu Retta	96	Java	2023-08-31 16:54:53
2	Daniel Zhang	99	Java	2022-01-06 08:50:41
3	Felicia Chen-She	101	Java	2022-10-22 17:16:41
4	Nidhi Bhatia	104	Java	2023-09-04 17:04:41
5	Oussama Chaabi	106	Java	2022-09-09 17:50:59
6	Linda Hu	106	Java	2022-09-12 17:22:23
7	Emilie Yahui Zhang	107	Java	2023-09-02 19:52:07
8	Rachel Craite	107	Java	2025-09-03 19:01:01
9	Kevyn Valladares	108	Java	2022-01-06 22:25:12
10	Chen Yue	108	Java	2022-09-03 00:09:53

#	User	Length	Language	Date
1	Wen Wu	27	JavaScript (Node.js)	2021-09-09 19:48:45
2	Ibrahim Younas, Mr	27	JavaScript (Node.js)	2023-09-08 02:02:56
3	Hidden user	27	JavaScript (Node.js)	2023-09-08 13:23:29
4	Anthony Azrak	27	JavaScript (Node.js)	2024-09-04 18:46:59
5	Milton Rosenbaum	27	JavaScript (Node.js)	2024-09-04 18:57:11
6	Yizhong Ding	28	JavaScript (Node.js)	2021-09-10 19:17:49
7	Yuqi Liu	28	JavaScript (Node.js)	2021-09-13 09:04:20
8	Felicia Chen-She	28	JavaScript (Node.js)	2022-10-22 17:19:11
9	Nicholas Foisy	28	JavaScript (Node.js)	2024-09-04 18:43:52
10	Barry Chen	28	JavaScript (Node.js)	2024-09-04 18:55:34

#	User	Length	Language	Date
1	Felis Sedano Luo Yi	55	Julia	2023-09-09 02:32:05

#	User	Length	Language	Date
1	Tuvshin Ganbold	27	OCaml	2021-09-04 21:30:41
2	Felicia Chen-She	27	OCaml	2022-10-22 17:22:55
3	David Lanyi	28	OCaml	2023-08-31 02:44:42
4	Shazain Aziz	30	OCaml	2022-09-06 20:12:11
5	Dan Greco	30	OCaml	2025-09-03 17:23:04
6	Jason Hum	31	OCaml	2022-01-11 21:38:43

#	User	Length	Language	Date
1	Vương Thiện Kiên	65	Pascal	2024-03-24 21:00:12

#	User	Length	Language	Date
1	Eric Zhu	20	Python 2	2025-09-03 17:29:03
2	Brandon Sovran	21	Python 2	2022-01-08 01:39:39
3	Hanzhi Zhang	21	Python 2	2022-09-02 19:06:14
4	Yangyuru Liu	21	Python 2	2022-09-06 15:06:12
5	Jacqueline Wu	21	Python 2	2022-09-12 01:05:49
6	Sarah Al Taleb	21	Python 2	2022-10-22 00:06:59
7	Ping Gu	21	Python 2	2022-10-22 01:29:32
8	Yiwen Zhang	21	Python 2	2023-08-31 12:33:22
9	Claire Rodham	21	Python 2	2025-06-23 18:39:14
10	Adele Valero	21	Python 2	2025-09-03 17:24:49

#	User	Length	Language	Date
1	Yuyao Zhang	21	Python 3	2021-09-03 20:38:44
2	Adam Hochschild	21	Python 3	2021-09-03 21:06:37
3	Hidden user	21	Python 3	2021-09-03 22:42:32
4	Brian Hu	21	Python 3	2021-09-03 22:54:21
5	Charles Poli	21	Python 3	2021-09-03 23:07:40
6	Owen Smith	21	Python 3	2021-09-04 00:46:17
7	Sophie Cao	21	Python 3	2021-09-04 13:22:21
8	Hengxian Jiang	21	Python 3	2021-09-04 14:36:27
9	Walid Madih	21	Python 3	2021-09-04 16:44:10
10	Yingjie Xu	21	Python 3	2021-09-04 19:14:43

#	User	Length	Language	Date
1	Bowei Ke	21	Python 3 with NumPy	2022-09-04 18:35:17
2	Maitree Hirunteeyakul	21	Python 3 with NumPy	2022-09-05 08:39:01
3	Minna Feng	21	Python 3 with NumPy	2022-09-06 13:00:37
4	Yuyang Cao	21	Python 3 with NumPy	2022-09-07 03:32:14
5	Chamara Vithanage	21	Python 3 with NumPy	2022-09-10 05:46:44
6	Zhenbang Wu	21	Python 3 with NumPy	2022-09-10 17:43:08
7	Hidden user	21	Python 3 with NumPy	2022-09-12 16:40:19
8	Zehai Wen	21	Python 3 with NumPy	2022-09-13 20:12:44
9	Kian Fattahy	21	Python 3 with NumPy	2022-09-21 23:05:47
10	Ava Gilmour	21	Python 3 with NumPy	2022-10-22 14:57:11

#	User	Length	Language	Date
1	Henri Lemoine	19	Ruby	2022-09-05 00:10:04
2	Andrew Mackenzie	19	Ruby	2022-09-07 02:52:58
3	Daniel Zhang	19	Ruby	2023-09-04 01:39:08
4	Torin Andrews	21	Ruby	2025-09-03 17:24:24

#	User	Length	Language	Date
1	Louis Bouchard	42	Rust	2024-09-06 01:30:23
2	Sindbad Walter	43	Rust	2023-08-31 17:24:36
3	Callum Airlie	43	Rust	2024-09-04 18:55:00
4	Constantin Buruiana	49	Rust	2024-09-05 14:11:10

#	User	Length	Language	Date
1	Felis Sedano Luo Yi	89	Scala	2023-09-02 06:25:12

#	User	Length	Language	Date
1	Felis Sedano Luo Yi	27	TypeScript	2023-08-31 03:30:47

Solution running time distribution