Problem I
Good Morning! — Problem Statistics

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Submissions	7268
Accepted submissions	2558
Submission ratio	35.20%
Authors	2134
Full solves [?]	1849
Full solve Ratio	86.64%

#	User	Runtime	Language	Date
1	Yuwono Bangun Nagoro	0.02 s	C#	2020-10-28 12:53:45
2	Jasmin Baniya	0.03 s	C#	2020-02-09 21:24:37
3	Benjamin Iserman	0.03 s	C#	2022-04-21 01:39:36
4	Benjamin Applegate	0.04 s	C#	2023-08-31 00:00:09
5	Jerri Kangasniemi	0.06 s	C#	2023-10-06 01:28:06
6	Patrik Tetour	0.06 s	C#	2024-02-11 12:56:43
7	Zach Champeau	0.07 s	C#	2023-08-30 01:43:22
8	Mikael Fiala-Lundström	0.18 s	C#	2022-02-04 23:16:21

#	User	Runtime	Language	Date
1	Jacob Harris Cryer Kragh	0.05 s	F#	2023-04-07 11:03:02

#	User	Runtime	Language	Date
1	Jonas Mittnacht	0.00 s	Go	2024-02-20 21:24:55
2	Keoni Reynolds	0.00 s	Go	2025-10-30 01:41:47
3	Nathaniel Jordan Ramirez	0.00 s	Go	2025-10-30 04:27:56
4	Norbert Voelker	0.02 s	Go	2021-07-25 23:24:40

#	User	Runtime	Language	Date
1	Sven Rönnbäck	0.04 s	Java	2024-09-13 20:49:23
2	이나영/AI·소프트웨어학부(인공지능전공)	0.04 s	Java	2025-11-21 05:02:38
3	kimjintae	0.04 s	Java	2025-11-26 02:32:42
4	손영원/AI·소프트웨어학부(인공지능전공)	0.04 s	Java	2025-11-26 07:53:44
5	Paul Boddington	0.05 s	Java	2017-01-16 00:59:55
6	Bjørn Dons	0.05 s	Java	2018-11-16 06:10:26
7	Pham Minh Tuan Bui	0.05 s	Java	2024-10-30 09:07:42
8	Andrew Benedict	0.05 s	Java	2024-10-31 21:42:04
9	Thanh Nhan Nguyen	0.05 s	Java	2024-11-02 01:40:53
10	James H. Tran	0.05 s	Java	2024-11-05 05:58:08

#	User	Runtime	Language	Date
1	James Irvin	0.06 s	JavaScript (Node.js)	2018-09-30 01:26:19
2	Hovhannes Kantuni	0.42 s	JavaScript (Node.js)	2021-03-05 02:18:51

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-11-08 20:13:51
2	Jimmy Gustafsson	0.02 s	JavaScript (SpiderMonkey)	2022-09-27 12:17:12
3	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-05-30 14:43:20

#	User	Runtime	Language	Date
1	Hidden user	0.45 s	Julia	2025-03-04 20:50:45
2	Timothy Gaede	0.52 s	Julia	2024-05-23 07:39:46

#	User	Runtime	Language	Date
1	Jacob Huebner	0.12 s	Kotlin	2022-01-31 09:06:30
2	Allen Guan	0.16 s	Kotlin	2022-04-01 15:14:19
3	Taylor South	0.20 s	Kotlin	2023-03-07 22:11:40
4	Phường Lên	0.22 s	Kotlin	2019-10-30 02:28:59
5	Adam Rankin	0.23 s	Kotlin	2023-09-16 19:05:31
6	Chris Johnson	0.33 s	Kotlin	2025-03-24 03:09:35

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2017-08-14 13:14:20

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.01 s	Prolog	2016-11-13 17:03:53
2	Timothy White	0.05 s	Prolog	2021-09-15 04:45:25

#	User	Runtime	Language	Date
1	Christofer Ohlsson	0.03 s	Python 2	2016-11-08 18:49:09
2	Hermon Mulat	0.03 s	Python 2	2016-11-09 20:10:31
3	Erik Tjøswold	0.03 s	Python 2	2018-06-13 02:08:11
4	Johann Ly	0.03 s	Python 2	2018-09-20 10:02:06
5	Vincent Liu	0.03 s	Python 2	2018-09-28 03:22:12
6	Justin Su	0.03 s	Python 2	2018-10-17 04:59:45
7	Oskar Haarklou Veileborg	0.03 s	Python 2	2018-10-22 23:28:12
8	Asger Hautop Drewsen	0.03 s	Python 2	2018-10-30 22:25:21
9	Lars Åström	0.03 s	Python 2	2018-11-20 11:00:14
10	Johan Lyts	0.03 s	Python 2	2020-02-24 22:07:46

#	User	Runtime	Language	Date
1	Marika Rostvall	0.02 s	Python 3	2016-11-08 16:35:11
2	Robert Welin-Berger	0.02 s	Python 3	2016-11-08 16:52:41
3	Nathan Collins	0.02 s	Python 3	2016-11-30 02:44:55
4	Noah Ó Donnaile	0.02 s	Python 3	2017-03-14 04:28:29
5	Alfred Olsson	0.02 s	Python 3	2017-04-24 08:05:44
6	Josenildo Silva	0.02 s	Python 3	2017-07-09 04:01:21
7	Денис Соболев	0.02 s	Python 3	2017-07-20 11:47:40
8	Lionel KITIHOUN	0.02 s	Python 3	2017-07-29 14:25:20
9	Cian Ruane	0.02 s	Python 3	2017-08-06 20:19:19
10	Bob Krueger	0.02 s	Python 3	2017-09-14 01:12:23

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	Ruby	2019-11-27 18:08:49
2	Thomas Feld	0.06 s	Ruby	2023-08-29 10:23:43
3	Matzuka	0.07 s	Ruby	2025-11-04 14:41:59
4	Pontus Fyhr	0.14 s	Ruby	2025-10-03 10:46:45

#	User	Runtime	Language	Date
1	Pahlevi Fikri Auliya	0.00 s	Rust	2021-03-13 04:36:16
2	Aaron Lengyel	0.00 s	Rust	2021-11-10 18:17:23
3	Bas Dirks	0.00 s	Rust	2022-01-20 19:57:54
4	Jerri Kangasniemi	0.00 s	Rust	2023-10-10 00:23:32
5	Daniel Anker Hermansen	0.00 s	Rust	2024-11-09 14:24:49
6	Chris Seager	0.00 s	Rust	2025-02-13 04:20:09
7	Gabriella Gloria	0.00 s	Rust	2025-04-23 17:40:30
8	Egor Kulikov	0.00 s	Rust	2025-10-16 13:05:13
9	Joe Blower	0.00 s	Rust	2025-12-13 02:42:46

#	User	Length	Language	Date
1	최진범/AI·소프트웨어학부(인공지능전공)	573	C	2025-11-25 16:36:03
2	최민서	736	C	2025-11-25 14:53:46
3	Hyukjin Jang	767	C	2025-11-25 03:49:11
4	김현민	822	C	2025-11-25 13:42:39
5	이은우	845	C	2025-11-26 04:12:53
6	Ivan Petrov	868	C	2019-06-24 13:42:19
7	양민혁/AI·소프트웨어학부(인공지능전공)	870	C	2025-11-25 08:12:57
8	Raymond Yang	878	C	2021-12-29 02:07:21
9	이재훈/AI·소프트웨어학부(인공지능전공)	941	C	2025-11-25 09:01:13
10	Andrew Roberts	945	C	2022-01-15 02:24:38

#	User	Length	Language	Date
1	Benjamin Applegate	1509	C#	2023-09-14 08:28:08
2	Benjamin Iserman	1642	C#	2022-04-21 01:39:36
3	Zach Champeau	1859	C#	2023-08-30 01:43:22
4	Yuwono Bangun Nagoro	2644	C#	2020-10-28 12:53:45
5	Patrik Tetour	2688	C#	2024-02-11 12:56:43
6	Jerri Kangasniemi	5192	C#	2023-10-06 01:28:06
7	Jasmin Baniya	6032	C#	2020-02-09 21:24:37
8	Mikael Fiala-Lundström	11708	C#	2022-02-04 23:16:21

#	User	Length	Language	Date
1	William Gan	567	C++	2018-04-03 11:34:24
2	Hyunjun Lee	589	C++	2022-12-04 15:43:23
3	Leonardo Blanger	606	C++	2020-11-16 18:12:50
4	Johan Wind	607	C++	2018-09-17 18:49:35
5	Markus Mathiasen	607	C++	2022-03-15 20:28:35
6	Irawan Tanudirdjo	609	C++	2025-08-15 12:02:26
7	Hidden user	613	C++	2024-08-06 12:43:10
8	鹿目圆	627	C++	2019-01-31 17:01:35
9	Hidden user	671	C++	2016-11-08 18:28:15
10	Muhammed Naufal	683	C++	2020-03-01 20:57:51

#	User	Length	Language	Date
1	Jacob Harris Cryer Kragh	1065	F#	2023-04-07 11:03:02

#	User	Length	Language	Date
1	Norbert Voelker	1221	Go	2021-07-25 23:30:25
2	Jonas Mittnacht	1380	Go	2024-02-20 21:24:55
3	Keoni Reynolds	1453	Go	2025-10-30 01:41:47
4	Nathaniel Jordan Ramirez	1534	Go	2025-10-30 04:27:56

#	User	Length	Language	Date
1	Fang Qi	645	Haskell	2025-04-05 16:13:12
2	Ivan Marriott	790	Haskell	2025-04-07 21:42:33
3	Daniel Rasmussen	835	Haskell	2025-04-05 15:51:01
4	Hidden user	861	Haskell	2023-01-12 08:19:41
5	Antony Lee	897	Haskell	2018-02-11 10:41:23
6	Michael Wahoski	1028	Haskell	2025-04-02 12:37:54
7	Jon Nathaniel Ayuco	1028	Haskell	2025-04-07 23:04:11
8	Cole Higbee	1060	Haskell	2025-04-07 18:05:35
9	Lawson Darrow	1071	Haskell	2025-04-09 20:03:30
10	Tommy Chamberlain	1071	Haskell	2025-04-10 19:19:52

#	User	Length	Language	Date
1	Duncan Page	932	Java	2018-02-12 23:33:44
2	Doug Goodman	974	Java	2017-09-26 23:11:06
3	Hidden user	978	Java	2016-11-09 01:57:35
4	Marc Dominic San Pedro	990	Java	2024-05-27 12:43:30
5	Natalie Longtin	1010	Java	2018-02-12 20:57:04
6	Youngsik Yoon	1043	Java	2020-01-16 22:52:41
7	Markus Bao	1048	Java	2022-09-28 12:48:09
8	Le Huu Trinh Kha	1077	Java	2023-11-16 01:14:29
9	Khoa Ngo Duc Minh	1084	Java	2024-10-29 22:57:53
10	송경훈/응용통계학과	1098	Java	2025-11-23 06:36:27

#	User	Length	Language	Date
1	Hovhannes Kantuni	1509	JavaScript (Node.js)	2021-03-05 02:18:51
2	James Irvin	1690	JavaScript (Node.js)	2018-09-30 01:26:19

#	User	Length	Language	Date
1	Jimmy Gustafsson	576	JavaScript (SpiderMonkey)	2022-09-27 12:17:12
2	Bjørn Chr. Soltvedt	642	JavaScript (SpiderMonkey)	2016-11-08 20:13:51
3	Christian Pilegaard Cederquist	813	JavaScript (SpiderMonkey)	2023-05-30 14:43:20

#	User	Length	Language	Date
1	Hidden user	271	Julia	2025-03-04 20:50:45
2	Timothy Gaede	1254	Julia	2024-05-23 07:39:46

#	User	Length	Language	Date
1	Phường Lên	992	Kotlin	2019-10-30 02:28:59
2	Chris Johnson	1013	Kotlin	2025-03-24 03:09:35
3	Jacob Huebner	1105	Kotlin	2022-01-31 09:06:30
4	Taylor South	1228	Kotlin	2023-03-07 22:24:19
5	Allen Guan	1644	Kotlin	2022-04-01 15:14:19
6	Adam Rankin	2183	Kotlin	2023-09-16 19:05:31

#	User	Length	Language	Date
1	Ingemar Ragnemalm	2461	Pascal	2017-08-14 13:14:20

#	User	Length	Language	Date
1	Timothy White	995	Prolog	2021-09-15 04:45:25
2	Andriy Zyevakov	3396	Prolog	2016-11-13 17:03:53

#	User	Length	Language	Date
1	Thomas Feld	324	Python 2	2019-09-30 14:39:26
2	Andreas Björklund	467	Python 2	2020-03-30 21:11:20
3	Justin Su	477	Python 2	2018-10-17 05:05:15
4	Alejandro Moreno Zuluaga	477	Python 2	2025-04-07 00:42:41
5	Lars Åström	575	Python 2	2018-11-20 11:00:14
6	Johan Lyts	644	Python 2	2020-02-24 22:07:46
7	Hidden user	662	Python 2	2019-06-02 03:17:35
8	Jesper Öqvist	705	Python 2	2018-11-05 00:33:10
9	Hermon Mulat	793	Python 2	2016-11-09 20:10:31
10	João Pedro Alvito	820	Python 2	2018-04-04 23:21:10

#	User	Length	Language	Date
1	Rachel Krohn	251	Python 3	2025-03-15 03:52:00
2	Shashank Bhatt	262	Python 3	2023-08-29 03:35:28
3	Benjamin Z White	299	Python 3	2023-04-11 23:12:26
4	Charles Ancheta	308	Python 3	2023-04-13 08:52:26
5	Will Killian	312	Python 3	2022-10-19 14:45:12
6	Tyler Wright (Pug)	316	Python 3	2023-08-30 03:54:42
7	Yong Mao	324	Python 3	2023-07-28 04:13:23
8	Kelly Dance	345	Python 3	2023-08-30 00:33:07
9	Michael Goldwasser	345	Python 3	2025-09-04 06:55:14
10	Sean Malloy	356	Python 3	2022-10-20 03:19:58

#	User	Length	Language	Date
1	Thomas Feld	127	Ruby	2023-08-29 10:26:05
2	Matzuka	459	Ruby	2025-11-04 14:41:59
3	Hidden user	673	Ruby	2019-11-27 18:08:49
4	Pontus Fyhr	2165	Ruby	2025-10-03 10:46:45

#	User	Length	Language	Date
1	Bas Dirks	1264	Rust	2022-01-20 19:57:54
2	Chris Seager	1305	Rust	2025-02-13 04:20:09
3	Gabriella Gloria	1633	Rust	2025-04-23 17:40:30
4	Joe Blower	2477	Rust	2025-12-13 02:42:46
5	Jerri Kangasniemi	3009	Rust	2023-10-10 00:23:32
6	Pahlevi Fikri Auliya	3267	Rust	2021-03-13 04:36:16
7	Aaron Lengyel	5437	Rust	2021-11-10 18:17:23
8	Daniel Anker Hermansen	12630	Rust	2024-11-09 14:24:49
9	Egor Kulikov	22815	Rust	2025-10-16 13:05:13

Solution running time distribution