Problem I
Instagraph — Problem Statistics

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Submissions	682
Accepted submissions	264
Submission ratio	38.71%
Authors	215
Full solves [?]	198
Full solve Ratio	92.09%

#	User	Runtime	Language	Date
1	Dan Wolff	1.75 s	C#	2025-10-04 11:57:04

#	User	Runtime	Language	Date
1	Jüri Reitel	0.20 s	C++	2025-10-07 23:40:15
2	Lee Heng Sheng	0.21 s	C++	2025-10-05 10:11:31
3	Martynas Šmaižys	0.33 s	C++	2025-10-04 11:51:40
4	Marcus Dicander	0.34 s	C++	2025-10-04 12:53:40
5	Nick Wu	0.34 s	C++	2025-10-08 03:41:18
6	Manh Hung Nguyen	0.35 s	C++	2025-10-04 11:19:08
7	Kosuke Kaneshita	0.35 s	C++	2025-10-04 12:59:12
8	Joshua Andersson	0.37 s	C++	2025-10-04 11:26:00
9	Markus Krabbe Larsen	0.38 s	C++	2025-10-04 11:48:53
10	Hidden user	0.38 s	C++	2025-10-04 15:17:35

#	User	Runtime	Language	Date
1	Steinar Simonnes	0.68 s	Haskell	2025-10-05 16:47:31

#	User	Runtime	Language	Date
1	Lee Heng Sheng	0.41 s	Java	2025-10-05 10:05:50
2	Nils Hedin	1.00 s	Java	2025-10-10 16:18:15
3	Hidden user	1.04 s	Java	2025-10-10 16:53:55
4	Johannes Hackl	1.19 s	Java	2025-10-04 15:09:41
5	Åke Wettergren	1.28 s	Java	2025-10-04 11:48:00
6	Thore Husfeldt	1.28 s	Java	2025-10-05 19:55:19
7	Hidden user	1.30 s	Java	2025-10-04 12:46:09
8	Satia Herfert	1.53 s	Java	2025-10-04 13:08:20
9	Athena Winther	1.66 s	Java	2025-10-04 15:43:20
10	Emelie Bondesson	1.73 s	Java	2025-10-04 12:52:04

#	User	Runtime	Language	Date
1	Ihor Kolisnyk	2.46 s	JavaScript (Node.js)	2025-10-04 16:15:30

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	2.98 s	JavaScript (SpiderMonkey)	2025-10-05 01:54:47

#	User	Runtime	Language	Date
1	Petr	0.49 s	Python 3	03:17:45
2	Rune Harlyk	0.54 s	Python 3	2025-10-11 14:06:41
3	Andreas Severin Hauch Trøstrup	0.58 s	Python 3	2025-10-04 12:31:57
4	Alexander Nord	0.63 s	Python 3	2025-10-04 12:33:12
5	Hugo Bäckman	0.68 s	Python 3	2025-10-04 11:46:53
6	Oskar Haarklou Veileborg	0.68 s	Python 3	2025-10-04 20:14:30
7	Ole Vik Lysne	0.70 s	Python 3	2025-10-04 14:19:24
8	einar bratthall	0.75 s	Python 3	2025-10-04 11:41:09
9	Titas Bojarunas	0.79 s	Python 3	2025-10-04 14:39:11
10	Mattias Persson	0.81 s	Python 3	2025-10-10 16:35:13

#	User	Runtime	Language	Date
1	Thomas Feld	2.19 s	Ruby	2025-10-06 13:16:47

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.07 s	Rust	2025-10-05 14:24:19
2	Simon Hallefält	0.40 s	Rust	2025-10-05 15:53:15
3	Morteza Rezaei	0.40 s	Rust	2025-10-06 13:23:11
4	Fredrik Medley	0.45 s	Rust	2025-10-04 14:41:57
5	A Potato	4.49 s	Rust	2025-10-04 13:00:56

#	User	Length	Language	Date
1	Dan Wolff	2720	C#	2025-10-04 11:57:04

#	User	Length	Language	Date
1	Juknevicius Robertas	482	C++	2025-10-04 12:32:40
2	Marius Bjørhei	510	C++	2025-10-04 12:37:31
3	Hidden user	544	C++	2025-10-04 11:59:43
4	Lukas Kofoed Marker	552	C++	2025-10-04 12:46:26
5	Gustav Godsk	582	C++	2025-10-04 14:50:20
6	Hidden user	597	C++	2025-10-04 13:03:02
7	Mark	599	C++	2025-10-10 09:08:24
8	Kristinn Hrafn Daníelsson	611	C++	2025-10-04 11:45:47
9	Gustav Bille Gørtz	615	C++	2025-10-04 13:01:59
10	Markus Mathiasen	617	C++	2025-10-11 13:16:44

#	User	Length	Language	Date
1	Steinar Simonnes	1288	Haskell	2025-10-05 16:47:31

#	User	Length	Language	Date
1	Joel Johansson	978	Java	2025-10-04 12:25:08
2	Mads Westermann	1062	Java	2025-10-13 12:42:46
3	FrostBiil	1188	Java	2025-10-04 13:52:03
4	Silver Slinko	1402	Java	2025-10-04 14:55:13
5	Thøger Jakobsen	1419	Java	2025-10-04 13:35:44
6	Thore Husfeldt	1424	Java	2025-10-05 19:55:19
7	Athena Winther	1877	Java	2025-10-04 15:43:20
8	Johannes Hackl	2169	Java	2025-10-04 15:09:41
9	Hidden user	2840	Java	2025-10-10 16:53:55
10	Åke Wettergren	3171	Java	2025-10-04 11:48:00

#	User	Length	Language	Date
1	Ihor Kolisnyk	871	JavaScript (Node.js)	2025-10-04 16:15:30

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	660	JavaScript (SpiderMonkey)	2025-10-05 01:54:47

#	User	Length	Language	Date
1	Nicholas Russell Saerang	185	Python 3	2025-10-05 07:33:13
2	Ahmed Chamseddine	222	Python 3	2025-10-05 12:40:42
3	Axel Matstoms	242	Python 3	2025-10-04 11:34:24
4	Hugo Söderbergh	255	Python 3	2025-10-04 13:11:12
5	Farzam Abrishami	264	Python 3	2025-10-09 22:27:34
6	Jeroen Op de Beek	269	Python 3	2025-10-05 04:31:09
7	Luna Skjernaa Mygind	276	Python 3	2025-10-04 13:05:34
8	Bergur Snorrason	302	Python 3	2025-10-09 16:37:52
9	Gerth Stølting Brodal	321	Python 3	2025-10-04 23:48:10
10	Hidden user	347	Python 3	2025-10-04 11:52:04

#	User	Length	Language	Date
1	Thomas Feld	123	Ruby	2025-10-06 13:18:42

#	User	Length	Language	Date
1	Fredrik Medley	1175	Rust	2025-10-04 14:41:57
2	Morteza Rezaei	1224	Rust	2025-10-04 11:37:27
3	Simon Hallefält	1224	Rust	2025-10-05 15:53:15
4	A Potato	1845	Rust	2025-10-04 13:00:56
5	Vincent Lagerros	66644	Rust	2025-10-05 14:24:19

Solution running time distribution