Problem I
Secret Santa — Problem Statistics

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Submissions	1910
Accepted submissions	733
Submission ratio	38.38%
Authors	690
Full solves [?]	597
Full solve Ratio	86.52%

#	User	Runtime	Language	Date
1	Rasmus Brants	0.02 s	C#	2017-06-03 20:08:23
2	Klas af Geijerstam	0.02 s	C#	2017-07-06 17:01:09
3	Max Nylander	0.02 s	C#	2017-07-06 17:29:45
4	Øyvind Skaar	0.02 s	C#	2018-12-12 23:28:25
5	Soujatya Sanyal	0.02 s	C#	2019-02-10 04:06:28
6	Emil Jäpelt	0.02 s	C#	2020-11-27 19:23:19
7	Kristoffer Højelse	0.02 s	C#	2020-11-27 19:36:47

#	User	Runtime	Language	Date
1	Hugo Sansaqua	0.29 s	Common Lisp	2020-11-27 16:40:51

#	User	Runtime	Language	Date
1	Alejandro Germain	0.07 s	Go	2018-09-28 00:06:45
2	Norbert Voelker	0.07 s	Go	2021-08-24 00:10:08

#	User	Runtime	Language	Date
1	Johan Meier	0.00 s	Haskell	2016-12-30 22:48:17
2	Brent Yorgey	0.00 s	Haskell	2018-01-01 05:49:30
3	Jannik Olbrich	0.00 s	Haskell	2022-12-14 11:16:14
4	Rudy Matela	0.00 s	Haskell	2024-04-21 19:44:15
5	Steinar Simonnes	0.00 s	Haskell	2025-06-27 09:04:14
6	Aurélien Pepin	0.01 s	Haskell	2019-09-06 13:36:25

#	User	Runtime	Language	Date
1	Eskil Jarlskog	0.05 s	Java	2016-11-06 11:18:55
2	Måns Magnusson	0.05 s	Java	2016-11-06 13:39:07
3	Andreas Jansson	0.05 s	Java	2016-11-06 14:08:04
4	Micah Stairs	0.05 s	Java	2016-11-08 03:02:05
5	Paul Boddington	0.05 s	Java	2017-01-09 22:48:45
6	Chris Wu	0.05 s	Java	2017-03-11 20:04:24
7	Pontus Eriksson	0.05 s	Java	2017-07-05 21:54:45
8	Aldo Chow	0.05 s	Java	2017-08-08 06:04:58
9	Aron Bergman	0.05 s	Java	2017-12-08 10:54:11
10	Audun Liberg	0.05 s	Java	2017-12-08 23:52:05

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-11-07 00:06:34
2	Christian Mikkelstrup	0.01 s	JavaScript (SpiderMonkey)	2017-12-11 11:01:06
3	Christian Pilegaard Cederquist	0.03 s	JavaScript (SpiderMonkey)	2023-05-29 15:24:52

#	User	Runtime	Language	Date
1	Noszály Csaba	0.40 s	Julia	2025-09-16 00:01:31
2	Timothy Gaede	0.43 s	Julia	2024-05-28 21:48:28

#	User	Runtime	Language	Date
1	Adam Rankin	0.17 s	Kotlin	2023-05-15 18:24:25
2	Phường Lên	0.18 s	Kotlin	2019-10-27 00:42:55
3	Hidden user	0.20 s	Kotlin	2019-10-26 01:18:32

#	User	Runtime	Language	Date
1	Erik K	0.01 s	OCaml	2020-12-29 06:43:18

#	User	Runtime	Language	Date
1	Ingemar Ragnemalm	0.00 s	Pascal	2018-05-21 14:21:30

#	User	Runtime	Language	Date
1	Michael Mullen	0.02 s	Python 2	2017-01-05 19:21:02
2	Haggai Liu	0.02 s	Python 2	2017-01-10 07:26:49
3	Vikram Gaur	0.02 s	Python 2	2017-03-11 21:38:07
4	Zheng Dai	0.02 s	Python 2	2017-03-11 23:37:30
5	Kasper Borys	0.02 s	Python 2	2017-03-12 09:36:49
6	Shaheer Ahmed	0.02 s	Python 2	2017-11-21 01:03:56
7	Sigurður Jens Albertsson	0.02 s	Python 2	2017-11-23 13:44:42
8	Andrei Stoica	0.02 s	Python 2	2017-12-12 22:11:42
9	Kenny Wiratama	0.03 s	Python 2	2016-11-11 09:55:20
10	Pinzhen Chen	0.03 s	Python 2	2018-10-13 13:23:11

#	User	Runtime	Language	Date
1	Aonghus Lawlor	0.02 s	Python 3	2016-11-06 23:25:14
2	Christian Lindeström	0.02 s	Python 3	2016-11-10 13:48:29
3	Yunpeng Tang	0.02 s	Python 3	2017-03-11 19:39:28
4	Arnav Sastry	0.02 s	Python 3	2017-03-11 20:32:56
5	Jason Cannon	0.02 s	Python 3	2017-03-11 21:34:29
6	Shiro Omi	0.02 s	Python 3	2017-03-11 22:03:24
7	Bernhard Kartefla	0.02 s	Python 3	2017-04-20 02:38:57
8	Денис Соболев	0.02 s	Python 3	2017-04-22 16:57:39
9	Ilya Grekov	0.02 s	Python 3	2017-06-15 16:12:40
10	Manuel Kohnen	0.02 s	Python 3	2017-06-25 13:32:17

#	User	Runtime	Language	Date
1	Stian Fredrikstad	0.03 s	Ruby	2017-12-08 14:45:52
2	Thomas Feld	0.06 s	Ruby	2023-02-14 10:17:24

#	User	Runtime	Language	Date
1	Adrian	0.00 s	Rust	2021-10-25 01:16:34
2	Leslie Yip	0.00 s	Rust	2022-12-07 08:24:48
3	Oscar	0.00 s	Rust	2025-01-29 02:26:39

#	User	Length	Language	Date
1	Teikn Smith	167	C	2022-12-02 03:52:02
2	Hidden user	306	C	2024-12-12 22:57:12
3	vance	363	C	2020-03-12 05:01:08
4	Hrant Hovhannisyan	439	C	2017-04-17 11:22:55
5	Ivan Kotkamaa Toma	484	C	2016-12-14 16:21:56
6	Marcus Carlsson	484	C	2016-12-14 16:39:23
7	Scott Dauer	527	C	2020-01-16 06:01:05
8	dotParadigm	528	C	2019-08-28 21:18:54
9	Olav Røthe Bakken	641	C	2017-10-22 16:19:37
10	Pontus Eriksson	855	C	2017-07-06 17:35:05

#	User	Length	Language	Date
1	Klas af Geijerstam	428	C#	2017-07-06 17:01:09
2	Soujatya Sanyal	629	C#	2019-02-10 04:06:28
3	Kristoffer Højelse	631	C#	2020-11-27 19:38:06
4	Max Nylander	740	C#	2017-07-06 17:33:17
5	Emil Jäpelt	860	C#	2020-11-27 19:23:19
6	Rasmus Brants	1005	C#	2017-06-03 20:08:23
7	Øyvind Skaar	1584	C#	2018-12-12 23:28:25

#	User	Length	Language	Date
1	Ganapathy Sanath Balaji	228	C++	2019-09-12 09:19:52
2	Elias Lolck	238	C++	2020-11-27 17:07:42
3	Johan Wind	250	C++	2018-04-18 00:15:16
4	Steven Albert	261	C++	2016-11-11 12:26:26
5	Yeung Man Tsung	268	C++	2022-12-31 15:52:44
6	Grae Yeandle	283	C++	2017-01-18 16:47:19
7	Syx Pek	298	C++	2016-12-03 02:23:30
8	Fakhri Abbasov	299	C++	2023-10-19 19:24:27
9	Stefan Tiplea	305	C++	2023-10-17 14:49:57
10	Robert Koprinkov	308	C++	2019-10-14 20:00:40

#	User	Length	Language	Date
1	Hugo Sansaqua	2869	Common Lisp	2020-11-27 16:40:51

#	User	Length	Language	Date
1	Alejandro Germain	325	Go	2018-09-28 00:06:45
2	Norbert Voelker	537	Go	2021-08-24 00:10:08

#	User	Length	Language	Date
1	Jannik Olbrich	244	Haskell	2022-12-19 17:56:54
2	Aurélien Pepin	382	Haskell	2019-09-06 13:36:25
3	Johan Meier	456	Haskell	2016-12-30 22:48:17
4	Steinar Simonnes	552	Haskell	2025-06-27 09:04:14
5	Brent Yorgey	751	Haskell	2018-01-01 05:49:30
6	Rudy Matela	989	Haskell	2024-04-21 19:44:15

#	User	Length	Language	Date
1	Kate Sanders	356	Java	2019-02-07 00:51:36
2	Stela Palii	374	Java	2018-01-06 11:42:26
3	Eric Leow Yu Quan	420	Java	2021-01-01 10:05:10
4	Doug Goodman	422	Java	2017-06-07 20:10:41
5	Ashraf Ali	445	Java	2020-06-03 01:36:23
6	Low Jun Kai	451	Java	2019-01-20 14:24:33
7	David Koval	455	Java	2017-06-14 09:23:05
8	Rahul Shanmugham	455	Java	2017-11-21 04:32:06
9	Patrick Hession	455	Java	2018-02-07 10:26:01
10	Sohaib Atif	455	Java	2019-09-23 11:51:47

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	116	JavaScript (SpiderMonkey)	2023-05-29 15:24:52
2	Christian Mikkelstrup	230	JavaScript (SpiderMonkey)	2017-12-11 11:01:06
3	Bjørn Chr. Soltvedt	402	JavaScript (SpiderMonkey)	2016-11-07 00:06:34

#	User	Length	Language	Date
1	Noszály Csaba	75	Julia	2025-09-16 00:28:49
2	Timothy Gaede	483	Julia	2024-05-28 21:43:34

#	User	Length	Language	Date
1	Adam Rankin	457	Kotlin	2023-05-15 18:24:25
2	Hidden user	504	Kotlin	2019-10-26 01:18:32
3	Phường Lên	553	Kotlin	2019-10-27 00:42:55

#	User	Length	Language	Date
1	Erik K	708	OCaml	2020-12-29 06:43:18

#	User	Length	Language	Date
1	Ingemar Ragnemalm	913	Pascal	2018-05-21 14:21:30

#	User	Length	Language	Date
1	Thomas Feld	104	Python 2	2019-09-13 14:07:39
2	Vikram Gaur	136	Python 2	2017-03-11 21:38:07
3	Lars Åström	162	Python 2	2018-11-20 14:14:52
4	Kasper Borys	182	Python 2	2017-03-12 09:35:44
5	Sigurður Jens Albertsson	212	Python 2	2017-11-23 13:44:42
6	Johan Lyts	216	Python 2	2019-09-12 14:50:46
7	Conor McCauley	216	Python 2	2019-10-18 06:54:48
8	Andrei Stoica	220	Python 2	2017-12-12 22:14:56
9	Shaheer Ahmed	231	Python 2	2017-11-21 01:03:56
10	Wang Zhi Jian	233	Python 2	2019-05-11 15:55:50

#	User	Length	Language	Date
1	Lee Yi Heng	84	Python 3	2024-02-29 10:11:45
2	Benjamin Z White	87	Python 3	2023-05-15 17:17:09
3	Rafael Kristoforus Yanto	98	Python 3	2025-02-21 17:20:38
4	Farzam Abrishami	110	Python 3	2024-01-28 20:37:21
5	Christian Blumenthal	119	Python 3	2022-06-04 17:34:55
6	Zhang Jikun	125	Python 3	2023-04-17 20:44:44
7	Hidden user	128	Python 3	2020-09-15 12:59:45
8	Alexandre Noel	130	Python 3	2022-10-23 14:58:27
9	Yunpeng Tang	135	Python 3	2017-03-11 19:39:28
10	Christian Lindeström	136	Python 3	2016-11-10 13:48:29

#	User	Length	Language	Date
1	Thomas Feld	62	Ruby	2023-02-14 10:19:13
2	Stian Fredrikstad	217	Ruby	2017-12-08 14:45:52

#	User	Length	Language	Date
1	Oscar	767	Rust	2025-01-29 02:26:39
2	Leslie Yip	969	Rust	2022-12-07 08:24:48
3	Adrian	1039	Rust	2021-10-25 01:16:34

Solution running time distribution