Problem A
ICPC Tutorial — Problem Statistics

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Submissions	8729
Accepted submissions	2127
Submission ratio	24.37%
Authors	2136
Full solves [?]	1796
Full solve Ratio	84.08%

#	User	Runtime	Language	Date
1	Nazrul Affiq Bin Ahmad Amimar	0.01 s	C#	2015-09-12 07:35:21
2	Daouda Camara	0.01 s	C#	2015-09-14 12:28:16
3	Luiz Miranda	0.01 s	C#	2016-04-03 03:50:41
4	Joe Amenta	0.01 s	C#	2016-04-04 21:54:01
5	David Hutchinson	0.01 s	C#	2017-05-10 15:02:55
6	Hidden user	0.02 s	C#	2015-10-04 01:19:41
7	Tin Pavelić	0.02 s	C#	2016-03-10 12:05:51
8	Peter Bohunský	0.02 s	C#	2017-11-18 01:50:13
9	Tom Ilestrand	0.02 s	C#	2019-02-19 17:23:13
10	DE	0.02 s	C#	2019-02-26 00:20:00

#	User	Runtime	Language	Date
1	Yitian Wang	0.02 s	Go	2023-01-26 17:53:33
2	Hidden user	0.08 s	Go	2017-09-16 00:12:34
3	Erik Rairden	0.08 s	Go	2020-11-23 23:23:11
4	Krzysztof Gibuła	0.08 s	Go	2021-04-26 20:43:34
5	Gabriel Díaz	0.08 s	Go	2021-08-01 15:05:33
6	Norbert Voelker	0.08 s	Go	2021-10-29 20:03:00

#	User	Runtime	Language	Date
1	Ramtin Javanmardi	0.00 s	Haskell	2016-10-30 11:33:16
2	Hidden user	0.00 s	Haskell	2017-08-04 08:37:54
3	Brent Yorgey	0.00 s	Haskell	2017-11-24 02:14:54
4	Olle Eriksson	0.00 s	Haskell	2018-06-20 00:05:31
5	Steinar Simonnes	0.00 s	Haskell	2025-05-05 13:17:43
6	Lars Corbijn	0.01 s	Haskell	2018-09-17 17:27:57
7	Qi Ji	0.01 s	Haskell	2018-09-25 15:55:36
8	jordan Labell	0.01 s	Haskell	2019-03-16 06:28:53
9	Aurélien Pepin	0.01 s	Haskell	2019-09-11 10:45:36
10	Ziyao Wei	0.01 s	Haskell	2020-03-09 00:01:06

#	User	Runtime	Language	Date
1	CUX "INDIO" PRADA	0.04 s	Java	2024-08-04 15:48:41
2	Taras Romanyuk	0.04 s	Java	2024-09-07 23:24:44
3	Guangyi Zhou	0.04 s	Java	2024-12-14 07:36:22
4	Noel Lim	0.04 s	Java	2024-12-26 09:21:48
5	Issa Issack	0.04 s	Java	2025-01-14 21:28:32
6	Rene Argento	0.04 s	Java	2025-08-14 16:20:38
7	Marco Vincenzo Karaan	0.05 s	Java	2015-09-12 07:16:27
8	Nguyễn Mạnh Phúc	0.05 s	Java	2015-09-12 07:18:39
9	Thương Trương	0.05 s	Java	2015-09-12 07:54:54
10	Tú Huỳnh	0.05 s	Java	2015-09-12 07:58:11

#	User	Runtime	Language	Date
1	Hidden user	0.05 s	JavaScript (Node.js)	2019-03-07 15:18:49
2	Ram Basnet	0.42 s	JavaScript (Node.js)	2020-03-03 05:14:19

#	User	Runtime	Language	Date
1	Bjørn Chr. Soltvedt	0.01 s	JavaScript (SpiderMonkey)	2016-02-21 17:28:31
2	Hà Minh Ngọc	0.01 s	JavaScript (SpiderMonkey)	2016-07-26 20:23:33
3	Nguyễn Hùng Cường	0.02 s	JavaScript (SpiderMonkey)	2018-09-10 09:01:28
4	Christian Pilegaard Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-03-08 10:32:54
5	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-06-17 23:20:40

#	User	Runtime	Language	Date
1	Timothy Gaede	0.58 s	Julia	2024-08-22 17:36:57

#	User	Runtime	Language	Date
1	Nicholas Johnson	0.12 s	Kotlin	2020-06-14 22:23:26
2	Jahid Hasan Imon	0.12 s	Kotlin	2020-08-27 01:57:37
3	Adam Koprowski	0.19 s	Kotlin	2021-05-05 11:03:36
4	Adam Rankin	0.19 s	Kotlin	2023-09-15 06:53:57
5	Johnny Console	0.19 s	Kotlin	2023-10-27 19:41:56

#	User	Runtime	Language	Date
1	Andriy Zyevakov	0.02 s	Prolog	2024-12-09 06:22:59

#	User	Runtime	Language	Date
1	Thanh Do Quang	0.02 s	Python 2	2015-09-12 07:13:22
2	Akash Dnyaneshwar Rindhe	0.02 s	Python 2	2015-09-12 07:22:26
3	Manh Le	0.02 s	Python 2	2015-09-12 07:25:16
4	Christofer Ohlsson	0.02 s	Python 2	2015-09-14 14:50:39
5	Asger Hautop Drewsen	0.02 s	Python 2	2015-09-25 14:37:53
6	Adam Michael	0.02 s	Python 2	2015-09-26 19:20:57
7	Joshua Workman	0.02 s	Python 2	2015-09-26 21:23:29
8	Nick Wu	0.02 s	Python 2	2015-10-15 07:46:03
9	Lars Tveito	0.02 s	Python 2	2015-10-18 21:42:29
10	Hans Rusten	0.02 s	Python 2	2015-10-27 20:38:11

#	User	Runtime	Language	Date
1	John Kevin Tjahjadi	0.02 s	Python 3	2015-09-12 07:39:19
2	Hidden user	0.02 s	Python 3	2015-09-16 14:21:28
3	Zhuowei Zhang	0.02 s	Python 3	2015-09-26 19:27:16
4	Adam Fazekas	0.02 s	Python 3	2015-09-26 19:46:49
5	Jan Clarin	0.02 s	Python 3	2015-09-26 20:33:51
6	Adrien Coulier	0.02 s	Python 3	2015-09-26 21:39:30
7	John William O'Rourke	0.02 s	Python 3	2015-10-04 21:16:40
8	Wayne	0.02 s	Python 3	2016-01-24 18:01:29
9	Luca Della Vedova	0.02 s	Python 3	2016-02-14 20:17:17
10	Óðinn Eyjólfsson	0.02 s	Python 3	2016-03-18 13:26:14

#	User	Runtime	Language	Date
1	Casper Christensen	0.03 s	Ruby	2016-01-26 11:56:30
2	Naoki Mizuno	0.03 s	Ruby	2016-04-06 03:46:12
3	Macdara mac an tSionnaigh	0.04 s	Ruby	2019-09-27 18:09:37
4	Thomas Feld	0.06 s	Ruby	2023-06-06 15:30:30
5	Clement Oh	0.06 s	Ruby	2023-10-24 05:43:02

#	User	Runtime	Language	Date
1	Aaron Lengyel	0.00 s	Rust	2023-02-20 22:20:12
2	Vincent Lagerros	0.00 s	Rust	2024-07-07 20:41:20
3	Egor Kulikov	0.00 s	Rust	2025-10-16 13:11:21
4	Joe Blower	0.00 s	Rust	2025-12-31 02:25:27

#	User	Length	Language	Date
1	Tjandra Satria Gunawan	544	C	2015-09-12 09:07:37
2	Anton Lyxell	556	C	2019-05-14 12:47:33
3	Conor McGovern	575	C	2018-05-30 03:29:54
4	Ravi Shankar Reddy Kanakaveeti	658	C	2015-09-12 11:57:03
5	Samuel Nzembele	739	C	2019-05-04 15:36:36
6	Ng Wei Jie	739	C	2020-02-18 07:56:31
7	Jón Steinn Elíasson	763	C	2017-06-13 23:40:52
8	Axel Jeremy	763	C	2017-10-07 04:11:18
9	Krystian Wojcicki	763	C	2017-11-29 20:03:15
10	Yassine Mhedhbi	763	C	2017-12-03 04:25:38

#	User	Length	Language	Date
1	Peter Bohunský	1569	C#	2017-11-18 01:50:13
2	Hidden user	1587	C#	2015-10-04 01:19:41
3	Luiz Miranda	1686	C#	2016-04-03 03:50:41
4	Simon Boye Jørgensen	1824	C#	2020-10-27 20:11:53
5	Bryce Goddard	1927	C#	2020-04-17 22:53:25
6	David Hutchinson	2016	C#	2017-05-10 15:02:55
7	Tin Pavelić	2316	C#	2016-03-10 12:05:51
8	Jacob Aufdenberg	2599	C#	2019-05-16 19:54:50
9	DE	2926	C#	2019-02-26 00:20:00
10	Nop Nop	2931	C#	2020-02-12 23:49:27

#	User	Length	Language	Date
1	David Wärn	410	C++	2015-09-17 16:06:49
2	Muhammad Rizki Ramadhana	460	C++	2015-09-12 07:48:18
3	Üsame Cengiz	498	C++	2019-03-04 19:50:23
4	Rashad Borbély	525	C++	2016-08-26 23:08:28
5	鄭瀚	526	C++	2022-12-31 04:15:23
6	廖俊杰	527	C++	2015-09-12 10:26:28
7	Thalyta Lima	539	C++	2024-10-01 21:16:16
8	Daniel D'Agosta	549	C++	2024-01-24 22:07:43
9	Morgen Sudyanto	554	C++	2017-08-11 14:39:41
10	Yeung Man Tsung	562	C++	2022-12-05 18:39:15

#	User	Length	Language	Date
1	Hidden user	872	Go	2017-09-16 00:12:34
2	Krzysztof Gibuła	1141	Go	2021-04-26 20:43:34
3	Norbert Voelker	1180	Go	2021-10-29 20:07:21
4	Yitian Wang	1855	Go	2023-01-26 17:53:33
5	Gabriel Díaz	1904	Go	2021-08-01 15:05:33
6	Erik Rairden	2008	Go	2020-11-23 23:23:11

#	User	Length	Language	Date
1	Lars Corbijn	419	Haskell	2018-09-17 17:27:57
2	Ziyao Wei	496	Haskell	2020-03-09 00:01:06
3	Caleb Spiess	500	Haskell	2020-03-17 08:24:05
4	Steinar Simonnes	505	Haskell	2025-05-05 13:17:43
5	jordan Labell	602	Haskell	2019-03-16 06:28:53
6	Qi Ji	681	Haskell	2018-09-25 15:55:36
7	Brent Yorgey	801	Haskell	2017-11-24 02:14:54
8	Aurélien Pepin	884	Haskell	2019-09-11 10:45:36
9	Hidden user	1055	Haskell	2017-08-04 08:37:54
10	Olle Eriksson	1093	Haskell	2018-06-20 00:05:31

#	User	Length	Language	Date
1	Saathvik Selvan	662	Java	2018-03-13 19:41:41
2	Daniel West	769	Java	2017-10-30 20:28:57
3	Connor Johnston	787	Java	2018-11-27 06:21:42
4	Pauline Johnson	817	Java	2020-05-13 16:07:57
5	Annt Phyo Thwin	825	Java	2015-09-12 10:48:01
6	Mitchell Petingola	850	Java	2023-10-28 00:33:12
7	Felix Burie	875	Java	2016-12-04 00:21:42
8	김현수	877	Java	2019-10-10 00:06:43
9	Taylor Buscher	882	Java	2015-09-26 20:35:23
10	Ricardo Velasco Guachalla	901	Java	2023-10-28 01:17:40

#	User	Length	Language	Date
1	Ram Basnet	956	JavaScript (Node.js)	2020-03-03 05:14:19
2	Hidden user	1611	JavaScript (Node.js)	2019-03-07 15:18:49

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	406	JavaScript (SpiderMonkey)	2023-03-08 10:32:54
2	Nguyễn Hùng Cường	584	JavaScript (SpiderMonkey)	2018-09-10 09:01:28
3	Bjørn Chr. Soltvedt	873	JavaScript (SpiderMonkey)	2016-02-21 17:28:31
4	Zach Tschetter	895	JavaScript (SpiderMonkey)	2023-06-17 23:20:40
5	Hà Minh Ngọc	1353	JavaScript (SpiderMonkey)	2016-07-26 20:23:33

#	User	Length	Language	Date
1	Timothy Gaede	1175	Julia	2024-08-22 17:36:57

#	User	Length	Language	Date
1	Johnny Console	701	Kotlin	2023-10-27 19:41:56
2	Adam Rankin	898	Kotlin	2023-09-15 06:53:57
3	Adam Koprowski	924	Kotlin	2021-05-05 11:03:36
4	Jahid Hasan Imon	1912	Kotlin	2020-08-27 01:57:37
5	Nicholas Johnson	2924	Kotlin	2020-06-14 22:23:26

#	User	Length	Language	Date
1	Andriy Zyevakov	3653	Prolog	2024-12-09 06:22:59

#	User	Length	Language	Date
1	Trevor Masters	320	Python 2	2016-12-09 18:49:14
2	Thomas Feld	324	Python 2	2019-08-26 10:21:29
3	Peter Mikkelsen	350	Python 2	2018-04-07 19:14:38
4	Andreas Björklund	373	Python 2	2020-03-09 20:45:17
5	張振豪	379	Python 2	2015-09-12 07:11:38
6	Matt Bonsall	394	Python 2	2016-09-30 07:36:14
7	Marcus Wanner	397	Python 2	2015-09-26 22:42:35
8	Hidden user	406	Python 2	2016-07-11 18:57:11
9	Jasper Lu	412	Python 2	2017-07-09 02:19:23
10	Benjamin Scott Pruett	440	Python 2	2015-09-26 19:23:00

#	User	Length	Language	Date
1	Daniel Bogorad	136	Python 3	2026-01-19 15:12:03
2	Benjamin Z White	146	Python 3	2023-05-28 09:40:32
3	Tai Tze Kin	177	Python 3	2024-05-05 15:52:04
4	Yong Mao	178	Python 3	2023-06-02 23:41:28
5	David Aldenbro	232	Python 3	2025-08-19 15:13:04
6	Ahmed Chamseddine	255	Python 3	2025-05-14 00:06:01
7	Peter Stauder	258	Python 3	2023-04-20 21:10:03
8	Si Jie Tan	266	Python 3	2026-01-06 00:11:50
9	Li Yao'an	298	Python 3	2020-04-14 05:25:32
10	Kelly Dance	316	Python 3	2023-02-15 06:52:07

#	User	Length	Language	Date
1	Thomas Feld	95	Ruby	2023-06-06 15:48:07
2	Clement Oh	365	Ruby	2023-10-24 05:43:02
3	Macdara mac an tSionnaigh	437	Ruby	2019-09-27 18:09:37
4	Naoki Mizuno	584	Ruby	2016-04-06 03:46:12
5	Casper Christensen	597	Ruby	2016-01-26 11:56:30

#	User	Length	Language	Date
1	Joe Blower	2350	Rust	2025-12-31 02:25:27
2	Vincent Lagerros	4747	Rust	2024-07-07 20:41:20
3	Aaron Lengyel	5078	Rust	2023-02-20 22:20:12
4	Egor Kulikov	32966	Rust	2025-10-16 13:11:21

Solution running time distribution