Problem A
Kanna's Friendship — Problem Statistics

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Submissions	4052
Accepted submissions	3809
Submission ratio	94.00%
Authors	463
Full solves [?]	224
Full solve Ratio	48.38%

#	User	Score	Language	Date
1	Lucky Raffael Wijaya	61	C	2024-09-19 08:13:53

#	User	Score	Language	Date
1	Andriy Zyevakov	44	C#	2024-03-11 09:01:17

#	User	Score	Language	Date
1	Bjørn Chr. Soltvedt	44	JavaScript (Node.js)	2023-04-03 15:27:41

#	User	Score	Language	Date
1	Christian Cederquist	100	JavaScript (SpiderMonkey)	2023-10-25 19:39:54
2	Bjørn Chr. Soltvedt	44	JavaScript (SpiderMonkey)	2023-03-19 00:31:47

#	User	Score	Language	Date
1	Timothy Gaede	41	Julia	2024-09-16 13:14:26

#	User	Score	Language	Date
1	Hidden user	100	OCaml	2024-11-02 19:36:29

#	User	Score	Language	Date
1	Hidden user	100	Python 3	2024-11-04 21:10:39
2	Hidden user	100	Python 3	2023-07-14 05:10:20
3	Duoduo Zhao	100	Python 3	2025-08-20 09:05:50
4	Dylan Farley	100	Python 3	2025-05-22 20:12:35
5	Raymond Christopher	82	Python 3	2023-11-25 08:01:49
6	Hidden user	82	Python 3	2024-03-05 11:12:35
7	Jonathan Denning	65	Python 3	2023-11-30 13:47:24
8	Samuel Qi	62	Python 3	2025-07-19 18:57:42
9	Kadriye Yildiz	58	Python 3	2024-08-22 13:55:28
10	Woongbi Shin	58	Python 3	2024-07-31 10:03:40

#	User	Score	Language	Date
1	Vincent Lagerros	100	Rust	2025-06-03 16:02:15
2	Frank Endriss	100	Rust	2024-10-29 19:50:00
3	Joe Blower	100	Rust	2025-08-17 02:34:48
4	Egor Kulikov	100	Rust	2024-12-20 12:34:11
5	Daniel Anker Hermansen	100	Rust	2023-05-23 10:14:40
6	Luke Steensen	100	Rust	2024-10-31 04:31:20
7	Bas Dirks	24	Rust	2024-01-06 14:43:52

#	User	Runtime	Language	Date
1	Hidden user	0.06 s	C++	2022-10-27 18:30:34
2	Tomas Lagland	0.07 s	C++	2023-03-15 19:15:37
3	Ignacio Castellano Vega	0.07 s	C++	2023-03-31 21:38:21
4	Oskar Haarklou Veileborg	0.07 s	C++	2023-06-01 22:26:20
5	Jaime Romo González	0.07 s	C++	2023-08-07 18:15:45
6	Daniel González Arbelo	0.07 s	C++	2023-08-10 16:44:43
7	Steven Halim	0.08 s	C++	2022-10-23 17:45:01
8	Ammar Fathin Sabili	0.08 s	C++	2022-10-24 12:29:51
9	Joshua Nee Ting Feng	0.08 s	C++	2022-10-24 16:12:56
10	Arif Khalid	0.08 s	C++	2022-10-27 15:42:40

#	User	Runtime	Language	Date
1	Bjørn Dons	0.42 s	Java	2023-11-25 21:41:56
2	San Shao Qian	0.42 s	Java	2024-10-21 16:36:15
3	Timothy Wan Kai Yang	0.44 s	Java	2023-07-05 08:15:39
4	Ng Jian An	0.48 s	Java	2024-10-22 17:50:00
5	Choo Jun Inn Darren	0.50 s	Java	2024-10-16 08:36:04
6	Jason Christopher	0.51 s	Java	2023-10-27 12:37:44
7	Lester Lim Jia Jun	0.54 s	Java	2024-10-23 08:30:53
8	FAN YUEH-CHING	0.61 s	Java	2023-10-27 11:21:57
9	Hidden user	0.64 s	Java	2023-10-22 14:26:24
10	Benedict Bryan Tjandra	0.64 s	Java	2023-10-27 04:29:39

#	User	Runtime	Language	Date
1	Christian Cederquist	0.65 s	JavaScript (SpiderMonkey)	2023-10-25 19:39:54

#	User	Runtime	Language	Date
1	Hidden user	0.28 s	OCaml	2024-11-02 19:36:29

#	User	Runtime	Language	Date
1	Hidden user	0.54 s	Python 3	2024-11-04 21:10:39
2	Hidden user	0.57 s	Python 3	2023-07-14 05:10:20
3	Duoduo Zhao	0.72 s	Python 3	2025-08-20 09:05:50
4	Dylan Farley	0.76 s	Python 3	2025-05-22 20:12:35

#	User	Runtime	Language	Date
1	Vincent Lagerros	0.05 s	Rust	2025-06-03 16:02:15
2	Frank Endriss	0.06 s	Rust	2024-10-29 19:50:00
3	Joe Blower	0.06 s	Rust	2025-08-17 02:34:48
4	Egor Kulikov	0.15 s	Rust	2024-12-20 12:34:11
5	Daniel Anker Hermansen	0.19 s	Rust	2023-05-23 10:14:40
6	Luke Steensen	0.22 s	Rust	2024-10-31 04:31:20

#	User	Length	Language	Date
1	Frans Meulenbroeks	345	C++	2025-03-29 17:09:35
2	Elias Lolck	524	C++	2023-05-29 01:37:17
3	Hidden user	599	C++	2022-11-10 20:01:19
4	Ammar Fathin Sabili	607	C++	2022-10-24 12:29:51
5	Mathias Gernez	636	C++	2023-08-25 19:40:45
6	Pascal Zeihen	866	C++	2025-06-16 16:18:18
7	Nicholas Foo Chuan Le	872	C++	2022-11-10 17:20:31
8	Lim An Jun	982	C++	2023-04-14 09:39:28
9	Ignacio Castellano Vega	1016	C++	2023-03-31 21:38:21
10	Dmitry Lyubshin	1019	C++	2023-05-29 20:45:40

#	User	Length	Language	Date
1	Soh Soon Wei	1396	Java	2023-10-16 14:32:15
2	Atharva Tyagi	1410	Java	2023-10-21 09:54:27
3	Ng Jian An	1541	Java	2024-10-22 17:50:00
4	Koh Jia Xuan, Rick	1592	Java	2023-10-23 08:30:17
5	Jovan Yo Shihao	1638	Java	2024-10-23 11:24:24
6	Tan Xing Zhong	1647	Java	2024-10-17 16:46:09
7	Lim Shao Qi	1684	Java	2024-10-15 21:06:34
8	Puri Virakarin	1729	Java	2023-10-25 19:35:26
9	Jason Christopher	1769	Java	2023-10-27 12:17:52
10	Koh Tze Shyan Benjamin	1811	Java	2024-11-22 07:03:38

#	User	Length	Language	Date
1	Christian Cederquist	2108	JavaScript (SpiderMonkey)	2023-10-25 19:39:54

#	User	Length	Language	Date
1	Hidden user	1267	OCaml	2024-11-03 03:06:21

#	User	Length	Language	Date
1	Dylan Farley	1385	Python 3	2025-05-22 20:12:35
2	Hidden user	1429	Python 3	2024-11-04 21:10:39
3	Hidden user	1450	Python 3	2023-09-04 06:29:39
4	Duoduo Zhao	2395	Python 3	2025-08-20 09:05:50

#	User	Length	Language	Date
1	Luke Steensen	1744	Rust	2024-10-31 04:31:20
2	Joe Blower	2056	Rust	2025-08-17 02:34:48
3	Frank Endriss	3022	Rust	2024-10-29 19:50:00
4	Daniel Anker Hermansen	20603	Rust	2023-05-23 10:14:40
5	Egor Kulikov	37442	Rust	2024-12-20 12:34:11
6	Vincent Lagerros	62768	Rust	2025-06-03 16:02:15

Solution running time distribution