Problem I
Birthday Party — Problem Statistics

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Submissions	10993
Accepted submissions	3384
Submission ratio	30.78%
Authors	3064
Full solves [?]	2564
Full solve Ratio	83.68%

#	User	Runtime	Language	Date
1	Raymond Yang	0.00 s	C	2021-10-16 02:53:02
2	Mirel Cosulschi	0.00 s	C	2022-12-10 20:13:16
3	Anavi Vyawhare	0.00 s	C	2025-04-24 21:11:31
4	Hidden user	0.01 s	C	2022-12-08 00:56:47
5	Hidden user	0.01 s	C	2022-12-08 15:23:45
6	Sanjiv Dinakar	0.36 s	C	2023-04-29 15:45:17
7	Hidden user	0.47 s	C	2023-03-10 18:14:17
8	Wanghan Zhu	0.63 s	C	2024-06-12 11:53:29

#	User	Runtime	Language	Date
1	Fredrik Absalonsen	0.03 s	C#	2018-02-11 10:21:00
2	Kelvin Petry	0.03 s	C#	2019-06-17 12:15:44
3	Jayant Notani	0.04 s	C#	2020-04-05 04:29:48
4	Nathan Andrews	0.06 s	C#	2024-10-29 18:24:22

#	User	Runtime	Language	Date
1	Hidden user	0.03 s	Common Lisp	2019-08-06 23:22:40

#	User	Runtime	Language	Date
1	Yitian Wang	0.03 s	Go	2023-03-23 07:15:38
2	Norbert Voelker	0.08 s	Go	2021-12-08 20:17:15
3	Thomas Cole	0.10 s	Go	2024-03-22 03:39:28
4	Nathan Lee	0.10 s	Go	2025-11-03 14:55:15

#	User	Runtime	Language	Date
1	Birk Tjelmeland	0.01 s	Haskell	2018-01-24 16:21:00
2	Steinar Simonnes	0.01 s	Haskell	2025-08-11 12:09:25
3	nome	0.15 s	Haskell	2023-08-27 12:42:15
4	Morten Lohne	1.50 s	Haskell	2018-01-21 23:47:38

#	User	Runtime	Language	Date
1	José Vander Meulen	0.07 s	Java	2018-03-29 20:49:28
2	Vaibhav Pulastya	0.07 s	Java	2018-11-15 07:56:57
3	Mehdi Maick	0.07 s	Java	2018-12-12 19:05:41
4	Bjørn Dons	0.08 s	Java	2018-12-14 01:37:20
5	Rahul Ahuja	0.09 s	Java	2024-10-06 15:35:11
6	Magnus Øian	0.10 s	Java	2018-02-15 23:13:49
7	Sizhe Zheng	0.10 s	Java	2025-12-09 07:07:40
8	Øyvind Haarberg	0.11 s	Java	2016-09-28 20:15:48
9	James Black	0.11 s	Java	2017-10-27 04:07:28
10	Olivier Bourgeois	0.11 s	Java	2017-10-28 00:24:46

#	User	Runtime	Language	Date
1	Rachel Lader	1.28 s	JavaScript (Node.js)	2018-06-13 04:51:26

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.06 s	JavaScript (SpiderMonkey)	2023-06-29 20:43:25
2	Bjørn Chr. Soltvedt	0.45 s	JavaScript (SpiderMonkey)	2021-02-18 22:52:27
3	Zach Tschetter	1.46 s	JavaScript (SpiderMonkey)	2023-07-01 01:12:25

#	User	Runtime	Language	Date
1	Timothy Gaede	1.34 s	Julia	2025-04-13 06:49:57

#	User	Runtime	Language	Date
1	Phường Lên	0.23 s	Kotlin	2019-12-25 03:30:03
2	Hidden user	0.31 s	Kotlin	2018-01-24 15:20:47
3	Hidden user	0.33 s	Kotlin	2019-11-22 07:02:58
4	Ali M. Nekoh	0.34 s	Kotlin	2025-06-11 16:01:42
5	Luca Mueller	0.37 s	Kotlin	2024-10-25 21:05:00
6	Cheatahh	0.41 s	Kotlin	2025-06-14 12:10:07
7	Aksel Holbek Sørbye	4.69 s	Kotlin	2025-10-08 15:13:25

#	User	Runtime	Language	Date
1	Sander de Haan	0.01 s	Lua	2025-04-13 12:26:14
2	Caleb Austin	0.75 s	Lua	2024-11-03 00:02:08

#	User	Runtime	Language	Date
1	Ida Bredal Skjørten	0.07 s	Python 2	2016-10-24 22:05:42
2	Agis Daniels	0.07 s	Python 2	2020-03-22 16:24:21
3	Hidden user	0.08 s	Python 2	2018-12-15 01:01:07
4	Andreas Björklund	0.09 s	Python 2	2020-11-16 17:28:54
5	Oskar Haarklou Veileborg	0.11 s	Python 2	2018-10-31 14:12:15
6	Haggai Liu	0.14 s	Python 2	2017-06-11 07:36:10
7	Bjørn Herting	0.24 s	Python 2	2016-09-28 17:21:57
8	Victor Zheng	0.30 s	Python 2	2017-06-17 18:50:58
9	Sondre Vestad	0.39 s	Python 2	2016-09-28 16:12:56
10	Ida Ryland	0.39 s	Python 2	2016-10-23 20:18:07

#	User	Runtime	Language	Date
1	mike	0.04 s	Python 3	2018-11-14 21:05:47
2	Ram Basnet	0.04 s	Python 3	2018-11-16 18:45:26
3	Gunvor Lemvik	0.05 s	Python 3	2018-01-27 11:45:58
4	Simon Halvorsen	0.05 s	Python 3	2018-05-07 14:47:40
5	Mark Thomas	0.05 s	Python 3	2019-07-15 22:08:25
6	Navya Zaveri	0.05 s	Python 3	2019-12-05 03:16:37
7	Yosuke Mizutani	0.05 s	Python 3	2019-12-28 09:38:31
8	卢欣逸	0.05 s	Python 3	2024-10-10 12:18:37
9	Thomas Olinger	0.05 s	Python 3	2024-10-29 22:07:30
10	Aamir Shivji	0.05 s	Python 3	2025-11-23 04:23:16

#	User	Runtime	Language	Date
1	Thomas Feld	0.08 s	Ruby	2025-11-04 07:54:22

#	User	Runtime	Language	Date
1	Niklas Sandén	0.00 s	Rust	2023-03-08 17:21:50
2	Egor Kulikov	0.00 s	Rust	2025-01-14 15:48:57
3	Vincent Lagerros	0.00 s	Rust	2025-03-16 14:07:51
4	anass belcaid	0.00 s	Rust	2025-11-21 10:56:36
5	Eric Pinter	0.01 s	Rust	2020-10-13 00:51:48
6	Joe Blower	0.02 s	Rust	2025-09-09 16:39:27
7	Erik Magnusson	0.12 s	Rust	2024-02-06 17:13:49

#	User	Length	Language	Date
1	Wanghan Zhu	865	C	2024-06-12 11:53:29
2	Raymond Yang	1051	C	2021-10-16 02:53:02
3	Hidden user	1251	C	2023-03-10 18:14:17
4	Mirel Cosulschi	1329	C	2022-12-10 20:13:16
5	Hidden user	1801	C	2022-12-08 15:23:45
6	Hidden user	1964	C	2022-12-08 01:10:45
7	Anavi Vyawhare	2180	C	2025-04-24 21:11:31
8	Sanjiv Dinakar	3484	C	2023-04-29 15:45:17

#	User	Length	Language	Date
1	Nathan Andrews	2037	C#	2024-10-29 18:24:22
2	Fredrik Absalonsen	2913	C#	2018-02-11 10:21:00
3	Kelvin Petry	3426	C#	2019-06-19 09:36:19
4	Jayant Notani	3523	C#	2020-04-05 04:29:48

#	User	Length	Language	Date
1	Buste Alin	489	C++	2025-08-26 19:24:15
2	Ronchen Luo	618	C++	2024-06-02 18:00:29
3	Đặng Xuân Minh Khôi	686	C++	2025-06-18 09:38:42
4	tushar sharma	737	C++	2021-03-01 21:30:13
5	芦义涵	765	C++	2025-04-07 23:35:14
6	MEV Alan	766	C++	2021-11-01 06:09:02
7	Hidden user	769	C++	2017-07-25 19:26:21
8	Hidden user	769	C++	2017-07-25 19:27:16
9	Gaelan McMillan	773	C++	2023-03-05 17:06:42
10	Mohammad Shirali	773	C++	2023-09-08 13:45:27

#	User	Length	Language	Date
1	Hidden user	1541	Common Lisp	2019-08-06 23:22:40

#	User	Length	Language	Date
1	Thomas Cole	2211	Go	2024-03-22 03:39:28
2	Yitian Wang	2271	Go	2023-03-23 07:15:38
3	Nathan Lee	3103	Go	2025-11-03 14:55:15
4	Norbert Voelker	4616	Go	2021-12-08 20:17:15

#	User	Length	Language	Date
1	Birk Tjelmeland	1459	Haskell	2018-01-24 16:21:00
2	Morten Lohne	1904	Haskell	2018-01-22 15:18:49
3	Steinar Simonnes	2997	Haskell	2025-08-11 12:09:25
4	nome	6838	Haskell	2023-08-27 12:42:15

#	User	Length	Language	Date
1	Benedikt Nork	1155	Java	2018-06-11 21:25:06
2	Arham Khan	1179	Java	2024-05-09 20:40:37
3	Duncan Page	1317	Java	2018-03-26 22:24:40
4	Zoe Xue	1353	Java	2023-11-01 12:25:09
5	Venkatasai Gudisa	1401	Java	2022-07-11 18:45:48
6	Nathan Zhang	1403	Java	2022-11-09 02:19:04
7	Thomas King	1424	Java	2019-10-09 18:11:04
8	Ken Zheng	1442	Java	2023-03-03 23:48:30
9	Matthew Sun Sun	1486	Java	2023-12-25 22:48:37
10	Felix Shen	1488	Java	2023-03-11 19:23:23

#	User	Length	Language	Date
1	Rachel Lader	2035	JavaScript (Node.js)	2018-06-13 04:51:26

#	User	Length	Language	Date
1	Zach Tschetter	1010	JavaScript (SpiderMonkey)	2023-07-01 01:12:25
2	Christian Pilegaard Cederquist	2320	JavaScript (SpiderMonkey)	2023-06-29 20:43:25
3	Bjørn Chr. Soltvedt	19613	JavaScript (SpiderMonkey)	2021-02-18 22:52:27

#	User	Length	Language	Date
1	Timothy Gaede	1677	Julia	2025-04-13 06:49:57

#	User	Length	Language	Date
1	Ali M. Nekoh	1254	Kotlin	2025-06-11 16:01:42
2	Cheatahh	1410	Kotlin	2025-06-14 12:10:07
3	Hidden user	1633	Kotlin	2019-11-22 07:02:58
4	Luca Mueller	1691	Kotlin	2024-10-25 21:05:00
5	Phường Lên	1823	Kotlin	2019-12-25 03:30:03
6	Hidden user	4158	Kotlin	2018-01-24 15:20:47
7	Aksel Holbek Sørbye	28521	Kotlin	2025-10-08 15:13:25

#	User	Length	Language	Date
1	Sander de Haan	1466	Lua	2025-04-13 12:26:14
2	Caleb Austin	2106	Lua	2024-11-03 00:02:08

#	User	Length	Language	Date
1	Oskar Haarklou Veileborg	549	Python 2	2018-10-31 13:59:54
2	Andreas Björklund	712	Python 2	2020-11-16 17:28:54
3	Haggai Liu	760	Python 2	2017-06-11 07:36:10
4	Victor Zheng	764	Python 2	2017-06-17 18:50:58
5	Maj Stenmark	825	Python 2	2020-09-08 18:20:26
6	Lars Åström	859	Python 2	2018-06-25 20:15:51
7	Ida Ryland	885	Python 2	2016-10-23 20:18:07
8	Bjørn Herting	946	Python 2	2016-09-28 15:20:01
9	Sondre Vestad	946	Python 2	2016-09-28 16:12:56
10	Ida Bredal Skjørten	987	Python 2	2016-10-24 22:05:42

#	User	Length	Language	Date
1	Sander Oppen	456	Python 3	2025-11-13 14:55:15
2	Kylind Reagan	486	Python 3	2025-10-08 20:51:32
3	Jimmy Xu	491	Python 3	2025-01-03 02:52:53
4	Andrew Ferguson	642	Python 3	2022-06-18 22:41:31
5	Kelly Dance	644	Python 3	2022-09-12 04:12:59
6	Victor Song	671	Python 3	2023-12-19 12:50:57
7	Abel Moen	706	Python 3	2025-11-28 09:55:35
8	Denis Molnar Ardelean	730	Python 3	2025-06-02 15:41:39
9	Nicholas Russell Saerang	737	Python 3	2023-10-24 09:50:00
10	Aarav Sh	743	Python 3	2025-04-06 02:44:20

#	User	Length	Language	Date
1	Thomas Feld	289	Ruby	2025-11-04 08:32:42

#	User	Length	Language	Date
1	Eric Pinter	4271	Rust	2020-10-13 00:51:48
2	Joe Blower	4302	Rust	2025-09-09 16:39:27
3	anass belcaid	4904	Rust	2025-11-21 10:56:36
4	Erik Magnusson	5041	Rust	2024-02-06 17:13:49
5	Niklas Sandén	27178	Rust	2023-03-08 17:21:50
6	Vincent Lagerros	44024	Rust	2025-03-16 14:07:51
7	Egor Kulikov	49330	Rust	2025-01-14 15:48:57

Solution running time distribution