Problem A
Numbers On a Tree — Problem Statistics

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Submissions	2144
Accepted submissions	545
Submission ratio	25.42%
Authors	562
Full solves [?]	503
Full solve Ratio	89.50%

#	User	Runtime	Language	Date
1	Rose Liu	0.00 s	C	2021-10-29 19:02:24
2	Darcy Mazloum	0.00 s	C	2022-02-23 01:59:36
3	Richard Xia	0.00 s	C	2022-02-23 17:18:42
4	Vlad Zorila	0.00 s	C	2022-02-23 18:45:14
5	Weichen Zong	0.00 s	C	2022-10-28 19:46:01
6	Nazim Djeradi	0.00 s	C	2022-10-29 15:51:49
7	selyann berrada	0.00 s	C	2024-09-11 22:25:23
8	Anubhav Shelat	0.00 s	C	2024-09-17 17:48:19
9	Sophia Vetrici	0.00 s	C	2024-09-17 21:06:36

#	User	Runtime	Language	Date
1	Dan Greco	0.00 s	Haskell	2025-09-08 19:20:07

#	User	Runtime	Language	Date
1	Daniel Aarao Reis Arturi	0.04 s	Java	2024-09-12 01:07:50
2	Bogdan Timercan	0.04 s	Java	2025-09-10 06:38:54
3	Daniel Zhang	0.06 s	Java	2022-02-22 19:29:36
4	Xin Yi Du	0.06 s	Java	2022-02-23 15:52:48
5	Zixi Luo	0.06 s	Java	2022-10-25 19:24:23
6	Yuran Zhang	0.06 s	Java	2022-10-29 12:24:14
7	Justin Bondurant-David	0.07 s	Java	2021-10-26 22:20:31
8	Xiejun Shen	0.08 s	Java	2025-09-16 01:56:12
9	Hidden user	0.08 s	Java	2025-09-18 19:10:04
10	Nehir Özsunar	0.08 s	Java	2025-09-18 21:33:27

#	User	Runtime	Language	Date
1	Brandon Sovran	0.03 s	Python 2	2022-02-23 00:35:12

#	User	Runtime	Language	Date
1	Théophile Bégin	0.04 s	Python 3	2022-10-21 20:19:28
2	Yi Jia Tan	0.04 s	Python 3	2022-10-21 22:14:12
3	Kaelan Felcarek-Hope	0.04 s	Python 3	2022-10-21 22:49:02
4	Chuntao Hu	0.04 s	Python 3	2022-10-21 23:31:47
5	Christopher Parkinson	0.04 s	Python 3	2022-10-22 13:41:31
6	Claire Feng	0.04 s	Python 3	2022-10-22 15:40:02
7	Minna Feng	0.04 s	Python 3	2022-10-23 03:53:41
8	Victor Chen	0.04 s	Python 3	2022-10-23 17:17:36
9	Yujie Chen	0.04 s	Python 3	2022-10-23 19:52:03
10	Dailun Li	0.04 s	Python 3	2022-10-23 20:28:16

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	Python 3 with NumPy	2024-09-16 19:01:48
2	Shusheng Liu	0.04 s	Python 3 with NumPy	2024-09-17 00:46:09
3	Junghoon Cho	0.04 s	Python 3 with NumPy	2025-09-10 14:57:54
4	Yutong Liu	0.04 s	Python 3 with NumPy	2025-09-15 20:25:48
5	Ethan Church	0.04 s	Python 3 with NumPy	2025-09-17 19:32:27
6	hannah dacks	0.04 s	Python 3 with NumPy	2025-09-17 20:04:21
7	Mikhael Pechonkin	0.04 s	Python 3 with NumPy	2025-09-18 16:11:09
8	Hidden user	0.04 s	Python 3 with NumPy	2025-09-18 20:11:52
9	Dominic Phung	0.05 s	Python 3 with NumPy	2023-09-11 01:20:53
10	Isabella Drouin	0.05 s	Python 3 with NumPy	2023-09-13 18:23:22

#	User	Runtime	Language	Date
1	Louis Bouchard	0.00 s	Rust	2024-09-15 03:49:29

#	User	Length	Language	Date
1	Weichen Zong	543	C	2022-10-28 19:46:01
2	Nazim Djeradi	566	C	2022-10-29 15:51:49
3	Rose Liu	591	C	2021-10-29 19:02:24
4	Anubhav Shelat	607	C	2024-09-17 17:48:19
5	Sophia Vetrici	607	C	2024-09-17 21:06:36
6	Vlad Zorila	636	C	2022-02-23 18:45:14
7	Richard Xia	650	C	2022-02-23 17:18:42
8	selyann berrada	708	C	2024-09-11 22:25:23
9	Darcy Mazloum	863	C	2022-02-23 01:59:36

#	User	Length	Language	Date
1	Mohamed Ben Mekki	251	C++	2022-10-21 20:57:17
2	Ricky Youm	257	C++	2023-10-12 22:10:42
3	Hidden user	257	C++	2025-09-19 01:12:03
4	Nicolas Fertout	264	C++	2022-02-23 06:10:47
5	Luna Dana	304	C++	2022-02-18 19:35:42
6	Lara Ozdamar	310	C++	2022-10-27 01:32:20
7	Calla Lu	320	C++	2022-10-28 03:21:01
8	Khalil Alobeid	335	C++	2024-09-19 00:31:34
9	Hidden user	337	C++	2021-10-22 19:14:59
10	Joey Yu	352	C++	2025-09-09 21:28:39

#	User	Length	Language	Date
1	Dan Greco	364	Haskell	2025-09-08 19:20:07

#	User	Length	Language	Date
1	Khalil Alobeid	445	Java	2024-09-19 03:35:02
2	Xiaoyi Li	455	Java	2022-02-23 16:07:15
3	Alberto Lopez Garcia	477	Java	2022-10-27 21:11:51
4	Katie Schunk	486	Java	2021-10-28 19:25:09
5	Jianing Xu	508	Java	2021-10-22 22:01:56
6	Sarah Al Taleb	538	Java	2022-10-27 18:19:50
7	Yimu Zhang	540	Java	2022-10-27 14:20:31
8	Jun Soo Kim	547	Java	2023-09-10 22:49:32
9	Yining Wang	558	Java	2022-02-19 00:43:35
10	Peter Montgomery	562	Java	2023-09-15 22:51:01

#	User	Length	Language	Date
1	Brandon Sovran	317	Python 2	2022-02-23 00:35:12

#	User	Length	Language	Date
1	Edmund Paquin	107	Python 3	2024-09-14 19:39:15
2	Milton Rosenbaum	120	Python 3	2024-09-15 18:44:10
3	Shazain Aziz	128	Python 3	2022-10-28 04:54:39
4	Victor Chen	132	Python 3	2022-10-23 17:19:22
5	Maitree Hirunteeyakul	157	Python 3	2022-10-26 17:42:48
6	Louis-Alexandre Jobin-Colgan	162	Python 3	2023-09-10 15:50:13
7	Alex To	168	Python 3	2022-02-22 22:32:19
8	Chamara Vithanage	169	Python 3	2022-10-28 10:55:32
9	Marie Li Chionis	169	Python 3	2024-09-12 15:41:52
10	Danlin Luo	173	Python 3	2023-09-10 23:33:20

#	User	Length	Language	Date
1	Hidden user	211	Python 3 with NumPy	2025-09-18 20:12:40
2	hannah dacks	290	Python 3 with NumPy	2025-09-17 20:04:21
3	Shusheng Liu	319	Python 3 with NumPy	2024-09-17 00:46:09
4	Ethan Church	342	Python 3 with NumPy	2025-09-17 19:32:27
5	Yutong Liu	356	Python 3 with NumPy	2025-09-15 20:25:48
6	Mikhael Pechonkin	370	Python 3 with NumPy	2025-09-18 16:11:09
7	Hidden user	382	Python 3 with NumPy	2024-09-16 19:01:48
8	Qi Zeng	428	Python 3 with NumPy	2025-09-18 18:53:53
9	Isabella Drouin	469	Python 3 with NumPy	2023-09-13 18:23:22
10	Junghoon Cho	537	Python 3 with NumPy	2025-09-10 14:57:54

#	User	Length	Language	Date
1	Louis Bouchard	708	Rust	2024-09-15 03:49:29

Solution running time distribution