Problem I
Knigs of the Forest — Problem Statistics

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Submissions	11595
Accepted submissions	2707
Submission ratio	23.35%
Authors	2136
Full solves [?]	1735
Full solve Ratio	81.23%

#	User	Runtime	Language	Date
1	Johan Larsson	0.02 s	C	2022-06-13 05:45:03
2	Ivan Petrov	0.03 s	C	2019-07-17 15:06:49
3	Goutham Dabbara	0.04 s	C	2020-12-15 04:56:33
4	pengin	0.04 s	C	2021-05-18 12:35:58
5	Melker Forsberg	0.05 s	C	2023-06-14 05:28:46
6	Hidden user	0.06 s	C	2018-06-08 10:46:50
7	Hidden user	0.07 s	C	2022-11-14 16:51:02
8	Solomon Tikabo	0.08 s	C	2025-02-10 13:19:35

#	User	Runtime	Language	Date
1	Jim Zheng	0.01 s	C++	2020-08-26 21:51:44
2	Michael Wu	0.01 s	C++	2024-05-08 04:03:11
3	Roger Chen	0.02 s	C++	2021-08-10 04:26:37
4	Harrison Shen	0.02 s	C++	2021-09-25 01:48:56
5	Agis Daniels	0.02 s	C++	2022-01-16 19:38:37
6	Arvid Jonasson	0.02 s	C++	2025-06-14 04:10:57
7	Hidden user	0.03 s	C++	2018-07-11 22:08:03
8	Mok Bing Wei Maurice	0.03 s	C++	2019-10-25 11:24:31
9	Hidden user	0.03 s	C++	2020-08-07 18:26:04
10	Frank Endriss	0.03 s	C++	2021-03-12 12:49:45

#	User	Runtime	Language	Date
1	Norbert Voelker	0.13 s	Go	2023-11-15 15:27:58
2	Ola Dahl	0.24 s	Go	2023-02-18 19:53:26

#	User	Runtime	Language	Date
1	Tan Yi Long	0.06 s	Java	2025-08-16 19:45:58
2	James Tang	0.10 s	Java	2020-10-02 03:15:58
3	Bjørn Dons	0.18 s	Java	2018-10-23 07:09:51
4	Caleb Ahn	0.18 s	Java	2021-09-29 23:03:18
5	Abdullah Aldalaan	0.19 s	Java	2020-07-06 20:17:19
6	Mahdi Bu Ali	0.19 s	Java	2021-02-24 01:56:09
7	Lakouam Issam	0.20 s	Java	2018-09-26 18:52:55
8	Aniket Kumar Gupta	0.20 s	Java	2020-10-04 20:35:27
9	Jeegn Dani	0.20 s	Java	2020-10-04 20:39:51
10	Bhavey Jain	0.20 s	Java	2021-09-28 22:47:42

#	User	Runtime	Language	Date
1	Jimmy Gustafsson	0.16 s	JavaScript (SpiderMonkey)	2022-06-10 00:38:16
2	Håkan Lindahl	0.26 s	JavaScript (SpiderMonkey)	2022-06-15 01:38:07
3	Christian Pilegaard Cederquist	0.41 s	JavaScript (SpiderMonkey)	2023-07-01 07:12:01

#	User	Runtime	Language	Date
1	Noszály Csaba	0.62 s	Julia	2025-03-09 20:09:41

#	User	Runtime	Language	Date
1	Jacob Huebner	0.50 s	Kotlin	2020-03-11 12:50:19
2	Eric Sjöström	0.60 s	Kotlin	2023-06-11 19:39:08
3	Johnny Baloney	0.62 s	Kotlin	2022-01-12 21:53:15
4	Adam Rankin	0.63 s	Kotlin	2023-09-14 07:44:59
5	Benjamin Ye	0.72 s	Kotlin	2023-02-12 19:43:23
6	Hidden user	0.74 s	Kotlin	2020-02-15 14:56:04
7	Robert M	0.84 s	Kotlin	2023-03-04 13:43:48
8	Phường Lên	0.92 s	Kotlin	2020-03-21 23:56:59
9	Adam Koprowski	0.94 s	Kotlin	2020-09-07 19:57:22

#	User	Runtime	Language	Date
1	Hidden user	0.17 s	Python 2	2017-09-23 13:11:47
2	Christofer Ohlsson	0.22 s	Python 2	2017-09-23 21:51:44
3	Frederik Højholt	0.22 s	Python 2	2017-10-06 15:44:50
4	Maj Stenmark	0.27 s	Python 2	2018-08-17 17:35:38
5	Måns Magnusson	0.42 s	Python 2	2018-10-22 20:51:34
6	Andreas Björklund	0.43 s	Python 2	2019-05-05 13:55:16
7	Oskar Haarklou Veileborg	0.66 s	Python 2	2017-10-06 14:36:45
8	Øyvind Haarberg	0.69 s	Python 2	2018-09-26 12:56:42
9	Hermon Mulat	0.74 s	Python 2	2019-12-27 04:24:06
10	Goutham Dabbara	0.74 s	Python 2	2020-12-15 05:01:40

#	User	Runtime	Language	Date
1	Petr	0.07 s	Python 3	2025-07-09 01:46:45
2	Avery	0.09 s	Python 3	2025-07-29 02:47:08
3	Robin Fumei	0.13 s	Python 3	2022-06-15 14:15:10
4	Nicolai Eliassen	0.13 s	Python 3	2023-08-26 22:25:14
5	Michael Yang	0.13 s	Python 3	2024-04-19 06:00:29
6	Zahid Hasan	0.16 s	Python 3	2025-09-20 06:44:53
7	Erik Buis	0.18 s	Python 3	2022-03-20 14:49:22
8	Hidden user	0.18 s	Python 3	2023-06-14 13:09:25
9	Zhang Haochen	0.18 s	Python 3	2024-04-03 07:57:33
10	Floris Cnossen	0.19 s	Python 3	2022-04-14 23:48:50

#	User	Runtime	Language	Date
1	Logan Detrick	0.01 s	Rust	2024-04-26 08:33:18
2	Vincent Lagerros	0.01 s	Rust	2025-02-15 03:15:27
3	Melker Forsberg	0.03 s	Rust	2023-06-12 18:13:16
4	Peter Johan Flått-Bjørnstad	0.03 s	Rust	2023-08-26 17:49:35
5	Hidden user	0.03 s	Rust	2025-03-06 19:48:01
6	Klas af Geijerstam	0.04 s	Rust	2020-03-01 11:45:20
7	Raphaël Gauthier	0.04 s	Rust	2021-02-24 19:38:10
8	Jørn Lode	0.04 s	Rust	2022-10-05 16:47:12
9	Egor Kulikov	0.04 s	Rust	2025-02-05 11:27:34
10	Logan Travis	0.04 s	Rust	2025-09-11 05:04:53

#	User	Length	Language	Date
1	Ivan Petrov	490	C	2019-07-17 15:06:49
2	Goutham Dabbara	515	C	2020-12-15 04:56:33
3	pengin	674	C	2021-05-18 12:35:58
4	Hidden user	1218	C	2018-06-08 10:46:50
5	Johan Larsson	1913	C	2022-06-13 05:45:03
6	Hidden user	1952	C	2022-11-14 16:51:02
7	Solomon Tikabo	2710	C	2025-02-10 13:56:59
8	Melker Forsberg	2786	C	2023-06-14 17:03:21

#	User	Length	Language	Date
1	Modak Shantanu Bharat	529	C++	2019-10-23 04:23:26
2	Ben Wu	536	C++	2021-08-06 11:50:18
3	Reyno Tilikaynen	553	C++	2017-10-10 02:22:58
4	Hidden user	554	C++	2020-05-19 10:22:31
5	Mugeon Kim	555	C++	2024-03-10 06:34:28
6	Prakhar Gandhi	556	C++	2023-06-10 05:51:08
7	Lav Radosavljevic	557	C++	2017-09-23 14:10:35
8	Daniel Brännvall	557	C++	2023-06-11 18:51:07
9	Leonid Cuklev	577	C++	2024-05-02 19:31:55
10	Andreas Alberg	591	C++	2022-02-17 16:53:36

#	User	Length	Language	Date
1	Ola Dahl	3056	Go	2023-02-18 19:53:26
2	Norbert Voelker	4429	Go	2023-11-15 15:32:36

#	User	Length	Language	Date
1	Yeung Man Tsung	641	Java	2022-07-18 15:31:59
2	Ernest Ng Zi Xuan	1074	Java	2024-09-15 02:41:01
3	Suhas T. Nagar	1123	Java	2022-05-24 23:03:50
4	Doug Goodman	1189	Java	2018-01-28 16:26:29
5	Brett Fazio	1193	Java	2019-01-03 22:05:30
6	Steven Halim	1202	Java	2024-08-07 06:15:19
7	Abdelrahman Mokbel	1224	Java	2022-10-03 07:46:59
8	Ng Jian An	1236	Java	2024-09-16 07:42:50
9	Duncan Page	1253	Java	2019-09-10 00:13:44
10	Burek Čevap	1265	Java	2019-02-10 16:18:52

#	User	Length	Language	Date
1	Jimmy Gustafsson	583	JavaScript (SpiderMonkey)	2022-06-10 00:38:16
2	Håkan Lindahl	2200	JavaScript (SpiderMonkey)	2022-06-15 01:38:07
3	Christian Pilegaard Cederquist	3906	JavaScript (SpiderMonkey)	2023-07-01 07:12:01

#	User	Length	Language	Date
1	Noszály Csaba	238	Julia	2025-03-09 20:19:54

#	User	Length	Language	Date
1	Benjamin Ye	744	Kotlin	2023-02-12 19:43:23
2	Robert M	889	Kotlin	2023-03-04 13:43:48
3	Adam Koprowski	977	Kotlin	2020-09-07 19:57:22
4	Johnny Baloney	1026	Kotlin	2022-01-12 21:41:56
5	Jacob Huebner	1079	Kotlin	2020-03-11 12:50:19
6	Adam Rankin	1116	Kotlin	2023-09-14 07:44:59
7	Eric Sjöström	1123	Kotlin	2023-06-11 19:39:08
8	Hidden user	1480	Kotlin	2020-02-15 14:56:04
9	Phường Lên	3391	Kotlin	2020-03-21 23:56:59

#	User	Length	Language	Date
1	Andreas Björklund	515	Python 2	2019-05-05 13:55:16
2	Måns Magnusson	527	Python 2	2018-10-22 20:51:34
3	Hidden user	584	Python 2	2017-09-23 12:57:07
4	Oskar Haarklou Veileborg	588	Python 2	2017-10-06 14:32:45
5	Maj Stenmark	598	Python 2	2018-08-17 17:35:38
6	Casper Rysgaard	631	Python 2	2021-04-21 12:23:22
7	Hidden user	683	Python 2	2019-07-19 12:38:03
8	Christofer Ohlsson	685	Python 2	2017-09-23 21:51:44
9	Frederik Højholt	693	Python 2	2017-10-06 15:44:50
10	Hermon Mulat	734	Python 2	2019-12-27 04:24:06

#	User	Length	Language	Date
1	Avery	166	Python 3	2025-07-25 21:53:33
2	Michael Wu	169	Python 3	2024-04-23 04:01:34
3	Simon Hellsten	209	Python 3	2023-07-11 12:44:48
4	Yong Mao	224	Python 3	2023-06-10 03:17:51
5	Michael Goldwasser	247	Python 3	2025-09-18 23:46:08
6	Zac Friggstad	299	Python 3	2025-09-23 16:05:32
7	Thibault Raffaillac	344	Python 3	2020-02-24 21:33:01
8	Joshua Ben Halim	351	Python 3	2020-10-31 09:35:24
9	Paul Swingle	376	Python 3	2023-06-24 19:40:43
10	Ng Hua Yu	385	Python 3	2024-04-02 19:44:05

#	User	Length	Language	Date
1	Logan Detrick	801	Rust	2024-05-07 04:18:41
2	Raphaël Gauthier	1148	Rust	2021-02-24 19:56:25
3	Hidden user	1329	Rust	2025-03-06 19:48:01
4	Thomas Hügel	1335	Rust	2020-12-29 13:51:39
5	Oskar Lindén	1455	Rust	2022-06-11 13:14:26
6	Kalle Vigren	1584	Rust	2024-05-19 22:32:35
7	Melker Forsberg	1727	Rust	2023-06-12 18:13:16
8	Eric Källman	1876	Rust	2025-06-19 08:10:34
9	Marcus Persson	1949	Rust	2025-06-19 05:43:49
10	Reis Faar	2079	Rust	2023-08-23 06:43:04

Solution running time distribution