Problem A
Collecting Beepers — Problem Statistics

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Submissions	3284
Accepted submissions	1281
Submission ratio	39.01%
Authors	1002
Full solves [?]	799
Full solve Ratio	79.74%

#	User	Runtime	Language	Date
1	Eyleifur Bjarkason	0.00 s	C	2023-02-05 22:46:10
2	Jón Steinn Elíasson	0.01 s	C	2020-04-16 19:59:49
3	Andrew Kraft	0.01 s	C	2021-02-23 23:27:19
4	Mugunth Sureshkanna	0.01 s	C	2021-04-10 20:20:02
5	Kody Hill	0.01 s	C	2021-04-10 21:32:38
6	Mickye Mouse	0.01 s	C	2021-06-17 10:24:40
7	Hidden user	0.01 s	C	2022-01-08 18:26:20
8	Samala Ramesh	0.01 s	C	2022-01-26 09:01:32
9	Bergur Snorrason	0.01 s	C	2022-02-04 14:23:41
10	Pranay Kiran	0.01 s	C	2022-04-28 20:50:33

#	User	Runtime	Language	Date
1	Abdellatif Elyoussefy	0.04 s	C#	2020-05-28 19:42:04

#	User	Runtime	Language	Date
1	Hidden user	0.04 s	D	2025-09-17 21:00:06

#	User	Runtime	Language	Date
1	Herman Appelgren	0.08 s	Java	2018-09-15 17:40:48
2	Taras Romanyuk	0.09 s	Java	2024-05-19 23:27:55
3	Mouad Naciri	0.10 s	Java	2018-12-06 17:25:36
4	Dhruv Patel	0.10 s	Java	2021-02-18 06:46:17
5	Lee Bing Heng	0.10 s	Java	2021-04-30 05:42:03
6	Rene Argento	0.10 s	Java	2022-12-06 02:40:26
7	Nick Wu	0.11 s	Java	2016-02-04 05:46:45
8	Mehdi Maick	0.11 s	Java	2017-10-31 21:30:15
9	Hidden user	0.11 s	Java	2021-02-19 14:08:46
10	Andrew Lyem	0.11 s	Java	2023-07-26 01:10:02

#	User	Runtime	Language	Date
1	Kenneth Chen	0.18 s	JavaScript (Node.js)	2022-06-29 17:12:32
2	Stephanie Keck	1.44 s	JavaScript (Node.js)	2020-02-13 23:45:03

#	User	Runtime	Language	Date
1	Christian Pilegaard Cederquist	0.08 s	JavaScript (SpiderMonkey)	2023-10-31 08:36:17

#	User	Runtime	Language	Date
1	Hidden user	1.76 s	Julia	2025-09-17 11:11:26
2	Timothy Gaede	3.55 s	Julia	2025-03-27 08:37:22

#	User	Runtime	Language	Date
1	Phường Lên	0.29 s	Kotlin	2020-07-18 19:37:21
2	Hidden user	0.41 s	Kotlin	2019-12-23 15:27:19
3	Adam Rankin	0.57 s	Kotlin	2023-09-21 02:20:43
4	Sam Keyser	5.80 s	Kotlin	2022-10-20 05:51:32
5	Chelsea Hoernemann	6.39 s	Kotlin	2022-10-01 02:00:27

#	User	Runtime	Language	Date
1	Andreas Björklund	0.13 s	Python 2	2019-01-20 06:35:48
2	Måns Gezelius	0.15 s	Python 2	2018-04-23 17:08:52
3	Hidden user	0.27 s	Python 2	2018-09-29 23:36:54
4	Maj Stenmark	0.27 s	Python 2	2018-09-30 15:41:33
5	Øyvind Haarberg	0.31 s	Python 2	2018-02-02 16:41:10
6	Lars Åström	0.35 s	Python 2	2019-09-19 14:18:08
7	Hidden user	0.39 s	Python 2	2018-12-30 14:05:08
8	Oskar Haarklou Veileborg	0.81 s	Python 2	2019-09-09 09:25:13

#	User	Runtime	Language	Date
1	Jiaming Kong	0.08 s	Python 3	2025-08-07 17:54:03
2	Hidden user	0.08 s	Python 3	2026-02-13 13:28:16
3	Aamir Shivji	0.09 s	Python 3	2025-11-24 20:08:35
4	Naveen Kumar S	0.09 s	Python 3	2026-02-23 00:54:01
5	Alex KA	0.10 s	Python 3	2024-11-11 20:09:53
6	gulinazha	0.10 s	Python 3	09:06:05
7	Pizza Hut	0.11 s	Python 3	2025-07-23 06:14:30
8	Haocheng Tang	0.11 s	Python 3	2025-11-05 20:36:15
9	Lennon Shikhman	0.12 s	Python 3	2024-11-06 05:05:19
10	Patrick Kelly	0.12 s	Python 3	2024-11-12 04:28:15

#	User	Runtime	Language	Date
1	Arturas Aleksandraus	0.01 s	Rust	2024-01-24 10:58:01
2	HuaiYuan Jing	0.53 s	Rust	2025-09-07 18:09:15
3	Daniel Anker Hermansen	4.69 s	Rust	2023-09-07 16:40:43

#	User	Length	Language	Date
1	Andrew Kraft	985	C	2021-02-23 23:27:19
2	Ivan Petrov	1009	C	2019-09-10 15:49:18
3	Bergur Snorrason	1084	C	2022-02-04 14:23:41
4	Hidden user	1120	C	2019-08-27 01:50:08
5	Charles Hora	1291	C	2022-10-06 16:17:40
6	Charlie Hora	1291	C	2022-10-06 16:20:57
7	blah blah	1384	C	2022-10-06 04:39:19
8	Lukas Polacek	1561	C	2010-09-08 18:57:36
9	Hidden user	1802	C	2022-01-08 18:29:59
10	tik tok	1810	C	2022-10-07 01:53:35

#	User	Length	Language	Date
1	Abdellatif Elyoussefy	3857	C#	2020-05-28 19:42:04

#	User	Length	Language	Date
1	William Gan	587	C++	2017-12-19 14:51:34
2	מגיב גן	702	C++	2025-06-03 22:10:14
3	Hubert Teo	717	C++	2017-03-02 09:10:07
4	Hidden user	733	C++	2025-07-15 22:57:05
5	Evan Michael Bailey	734	C++	2022-11-23 03:17:50
6	Armen Andreasyan	743	C++	2021-06-22 14:44:55
7	UBERTO GARCIA CACERES	745	C++	2022-10-30 02:32:16
8	Mel Ó Cinnéide	751	C++	2025-12-17 01:10:36
9	Brandon Zhang	757	C++	2023-06-24 10:29:43
10	Alex Dai	760	C++	2016-08-11 01:10:05

#	User	Length	Language	Date
1	Hidden user	803	D	2025-09-17 20:45:23

#	User	Length	Language	Date
1	Måns Magnusson	1158	Java	2016-04-23 01:02:31
2	Nhan Nguyen	1233	Java	2022-11-07 04:46:09
3	Hidden user	1255	Java	2022-07-23 19:47:01
4	Ryan Ahn	1279	Java	2022-11-09 09:33:44
5	Anh Tran	1281	Java	2022-11-06 19:43:12
6	Isindi Cela	1310	Java	2022-11-09 00:44:13
7	Doug Goodman	1383	Java	2017-09-22 21:55:54
8	Matthew Sheldon	1433	Java	2021-04-10 21:46:47
9	Mark Wen	1493	Java	2021-04-10 20:20:22
10	Josh Henderson	1558	Java	2022-09-04 21:05:34

#	User	Length	Language	Date
1	Kenneth Chen	2567	JavaScript (Node.js)	2022-06-29 17:12:32
2	Stephanie Keck	7437	JavaScript (Node.js)	2020-02-13 23:45:03

#	User	Length	Language	Date
1	Christian Pilegaard Cederquist	1421	JavaScript (SpiderMonkey)	2023-10-31 08:36:17

#	User	Length	Language	Date
1	Hidden user	386	Julia	2025-09-17 11:25:05
2	Timothy Gaede	3770	Julia	2025-03-27 08:37:22

#	User	Length	Language	Date
1	Phường Lên	1333	Kotlin	2020-07-18 19:37:21
2	Hidden user	1855	Kotlin	2019-12-23 15:27:19
3	Sam Keyser	1866	Kotlin	2022-10-20 05:51:32
4	Adam Rankin	2455	Kotlin	2023-09-21 02:20:43
5	Chelsea Hoernemann	2536	Kotlin	2022-10-01 02:00:27

#	User	Length	Language	Date
1	Andreas Björklund	739	Python 2	2019-01-20 06:35:48
2	Lars Åström	761	Python 2	2019-09-19 14:18:08
3	Oskar Haarklou Veileborg	765	Python 2	2019-09-09 09:25:13
4	Hidden user	855	Python 2	2018-12-30 14:05:08
5	Måns Gezelius	1175	Python 2	2018-04-23 17:08:52
6	Hidden user	1262	Python 2	2018-09-29 23:36:54
7	Maj Stenmark	1262	Python 2	2018-09-30 15:41:33
8	Øyvind Haarberg	1398	Python 2	2018-02-02 16:41:10

#	User	Length	Language	Date
1	Elijah Satrom	597	Python 3	2022-11-02 18:27:24
2	Kelly Dance	732	Python 3	2022-10-07 02:38:17
3	Ivan Marriott	742	Python 3	2024-11-04 09:40:32
4	Christoffer Sommerlund	774	Python 3	2021-06-28 20:36:05
5	Iker Lissarrague	777	Python 3	2023-10-14 09:17:32
6	Jeremy Lim	897	Python 3	2024-01-02 16:42:42
7	Pablo Dávila Herrero	956	Python 3	2025-03-31 10:46:02
8	Hidden user	994	Python 3	2024-11-12 04:26:06
9	Shi Zhijian	1027	Python 3	2021-12-01 15:31:25
10	لين ابو سلعوم	1065	Python 3	2025-05-30 23:01:39

#	User	Length	Language	Date
1	Arturas Aleksandraus	2029	Rust	2024-01-24 10:58:01
2	HuaiYuan Jing	2106	Rust	2025-09-07 18:09:15
3	Daniel Anker Hermansen	27144	Rust	2023-09-07 16:40:43

Solution running time distribution