Problem I
Credit Card Payment — Problem Statistics

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Submissions	4072
Accepted submissions	726
Submission ratio	17.83%
Authors	675
Full solves [?]	496
Full solve Ratio	73.48%

#	User	Runtime	Language	Date
1	Ivan Petrov	0.00 s	C	2019-08-06 08:37:20
2	陳重諺	0.00 s	C	2021-02-01 18:58:16
3	Hidden user	0.00 s	C	2024-02-12 19:09:08
4	Alexander Bilde Pedersen	0.00 s	C	2025-03-19 08:52:55
5	Boris Vanhoof	0.00 s	C	2025-11-12 22:15:49
6	Lee Geng Yu	0.01 s	C	2017-12-19 06:18:30
7	Eyleifur Bjarkason	0.01 s	C	2019-11-28 22:18:05
8	Bergur Snorrason	0.01 s	C	2019-12-04 12:36:14
9	Rishi Chandna	0.01 s	C	2020-08-29 21:18:54
10	Samuel Rose	0.01 s	C	2022-11-05 21:26:02

#	User	Runtime	Language	Date
1	Mateo Fernandez-Tyson	0.06 s	C#	2024-09-21 22:15:31

#	User	Runtime	Language	Date
1	Brent Yorgey	0.02 s	Haskell	2017-09-28 13:38:57
2	Li Jun	0.02 s	Haskell	2023-06-28 15:55:58
3	Matthew Gvasalia	0.08 s	Haskell	2023-08-05 02:51:34
4	Hidden user	0.09 s	Haskell	2022-01-29 03:20:20
5	Ghaith Abou Dan	0.17 s	Haskell	2021-03-02 03:58:43

#	User	Runtime	Language	Date
1	Bryan Jin	0.08 s	Java	2018-08-20 19:47:09
2	Ludvig Dahlberg	0.10 s	Java	2025-07-03 09:31:06
3	Lozzi Ali	0.11 s	Java	2016-11-23 03:46:28
4	Moussaid Yassine	0.11 s	Java	2016-11-23 20:01:56
5	Fu Jin	0.11 s	Java	2018-07-14 11:20:13
6	Crystal Sharpe	0.11 s	Java	2020-06-26 05:34:09
7	Alfred Andersson	0.12 s	Java	2016-11-15 19:05:52
8	Terrence Park	0.12 s	Java	2020-08-29 22:07:32
9	Godmar Back	0.12 s	Java	2022-09-06 06:14:51
10	Joseph Meleshko	0.13 s	Java	2017-09-27 20:11:32

#	User	Runtime	Language	Date
1	Redho Darmawan	0.10 s	JavaScript (Node.js)	2024-07-04 17:33:29
2	Daniel Cabral	0.47 s	JavaScript (Node.js)	2020-03-30 17:07:33

#	User	Runtime	Language	Date
1	Timothy Gaede	0.38 s	Julia	2025-04-22 14:12:50

#	User	Runtime	Language	Date
1	Jacob Huebner	0.18 s	Kotlin	2021-04-29 22:56:34
2	Johnny Baloney	0.24 s	Kotlin	2022-01-22 23:05:48
3	Hidden user	0.25 s	Kotlin	2020-02-09 19:12:33
4	Phường Lên	0.26 s	Kotlin	2020-04-04 06:51:37
5	Chelsea Hoernemann	0.64 s	Kotlin	2022-10-28 04:34:30

#	User	Runtime	Language	Date
1	Oscar Lindvall	0.05 s	Python 2	2016-11-15 19:59:00
2	Björn Magnusson	0.07 s	Python 2	2020-08-30 10:44:44
3	Hidden user	0.08 s	Python 2	2018-01-24 08:14:14
4	Andreas Björklund	0.16 s	Python 2	2020-09-01 17:26:10
5	Juho Lee	0.22 s	Python 2	2018-01-21 15:38:33
6	Hidden user	0.32 s	Python 2	2016-11-15 18:54:37
7	Catalin Popa	0.65 s	Python 2	2019-01-03 19:56:00

#	User	Runtime	Language	Date
1	Ram Basnet	0.05 s	Python 3	2017-03-22 07:16:52
2	Jonatan Šega Car	0.05 s	Python 3	2018-01-24 20:18:58
3	Chris Jiang	0.06 s	Python 3	2025-01-28 01:52:08
4	Martin Berglund	0.06 s	Python 3	2025-07-02 12:20:09
5	Jakob Fredby	0.07 s	Python 3	2025-06-26 15:10:13
6	Erik Risberg	0.07 s	Python 3	2025-07-03 07:39:11
7	Isaac Lee	0.07 s	Python 3	2025-10-28 23:27:50
8	Gaurav Ashar	0.08 s	Python 3	2025-02-01 05:52:07
9	Cheng Hang	0.09 s	Python 3	2018-01-19 10:50:18
10	Bjørn Dons	0.09 s	Python 3	2018-10-16 19:23:28

#	User	Runtime	Language	Date
1	Eric Källman	0.01 s	Rust	2025-06-30 23:45:22
2	Ishtiaq Hussain Naqi	0.02 s	Rust	2023-08-29 19:52:27

#	User	Length	Language	Date
1	Jesse Case	567	C	2021-12-01 21:43:07
2	Boris Vanhoof	620	C	2025-11-12 22:15:49
3	Samuel Rose	648	C	2022-11-05 21:26:02
4	Mirel Cosulschi	675	C	2025-02-22 23:25:47
5	Ricardo López Becerra	700	C	2021-08-22 20:53:40
6	Alexander Bilde Pedersen	716	C	2025-03-19 08:52:55
7	Ivan Petrov	739	C	2019-08-06 08:37:20
8	Ricardo Ruelas Viurquez	767	C	2021-08-20 22:10:17
9	Yoav Farid Pozos	767	C	2021-08-20 22:12:19
10	Díaz Bryan	767	C	2021-08-20 22:24:23

#	User	Length	Language	Date
1	Mateo Fernandez-Tyson	1423	C#	2024-09-21 22:15:31

#	User	Length	Language	Date
1	Jun Yan	319	C++	2024-07-27 04:08:05
2	Yeoh Han Yi	320	C++	2025-04-16 17:18:55
3	Raynold Ng	371	C++	2018-01-18 06:22:35
4	Hidden user	382	C++	2023-05-04 01:23:26
5	Mugeon Kim	391	C++	2024-01-31 03:42:42
6	Vedant K	437	C++	2024-04-17 12:51:27
7	Shafquat Mahbub	444	C++	2020-07-22 21:22:24
8	Roger Chen	455	C++	2021-06-01 18:53:05
9	Sidhant Bansal	465	C++	2018-01-18 19:26:45
10	Lim Meng Shin	466	C++	2022-11-27 15:50:38

#	User	Length	Language	Date
1	Li Jun	487	Haskell	2023-06-28 15:56:28
2	Hidden user	514	Haskell	2022-01-28 21:59:10
3	Matthew Gvasalia	722	Haskell	2023-08-05 02:51:34
4	Brent Yorgey	745	Haskell	2017-09-28 13:38:57
5	Ghaith Abou Dan	1021	Haskell	2021-03-02 03:58:43

#	User	Length	Language	Date
1	Michael Shi	534	Java	2022-09-04 19:47:04
2	Christopher Stephens	801	Java	2022-11-06 05:39:23
3	Joel Augustine	829	Java	2020-08-29 20:57:55
4	Cody Korman	864	Java	2022-10-03 04:33:04
5	Brian Tan	900	Java	2022-09-03 21:53:50
6	Lior Barak	905	Java	2022-11-09 22:10:51
7	Darrin Wiley	938	Java	2020-08-29 23:01:58
8	Vivan Shah	950	Java	2020-08-30 00:16:55
9	John Vincent Chua	964	Java	2023-06-11 13:49:05
10	Johnny Console	998	Java	2023-10-27 17:21:15

#	User	Length	Language	Date
1	Redho Darmawan	1082	JavaScript (Node.js)	2024-07-04 17:33:29
2	Daniel Cabral	1940	JavaScript (Node.js)	2020-03-30 17:07:33

#	User	Length	Language	Date
1	Timothy Gaede	772	Julia	2025-04-22 14:12:50

#	User	Length	Language	Date
1	Jacob Huebner	726	Kotlin	2021-04-29 22:56:34
2	Phường Lên	971	Kotlin	2020-04-04 06:51:37
3	Johnny Baloney	1114	Kotlin	2022-01-22 23:05:48
4	Hidden user	1203	Kotlin	2020-02-09 19:12:33
5	Chelsea Hoernemann	2031	Kotlin	2022-10-28 04:34:30

#	User	Length	Language	Date
1	Andreas Björklund	352	Python 2	2020-09-01 17:26:10
2	Björn Magnusson	358	Python 2	2020-08-30 10:44:44
3	Hidden user	402	Python 2	2018-01-24 08:14:14
4	Juho Lee	529	Python 2	2018-01-21 15:38:33
5	Catalin Popa	554	Python 2	2019-01-03 20:01:11
6	Hidden user	637	Python 2	2016-11-15 18:54:37
7	Oscar Lindvall	986	Python 2	2016-11-15 19:59:00

#	User	Length	Language	Date
1	Thibault Raffaillac	206	Python 3	2020-02-01 22:39:59
2	Herman Karlsson	209	Python 3	2016-11-16 21:03:39
3	Md Akif Chowdhury	265	Python 3	2023-02-23 02:28:25
4	Tylan McKinney	279	Python 3	2022-02-22 01:20:54
5	Oskar Haarklou Veileborg	281	Python 3	2021-04-07 20:13:27
6	Aditya Roy	303	Python 3	2025-06-02 17:06:22
7	Abdullah Farid	306	Python 3	2025-11-12 15:44:57
8	Russell Ng	307	Python 3	2025-06-08 13:33:16
9	Nicholas Russell Saerang	312	Python 3	2024-02-15 06:50:38
10	Kim Jong Un	312	Python 3	2024-07-06 14:20:45

#	User	Length	Language	Date
1	Ishtiaq Hussain Naqi	1141	Rust	2023-08-29 19:52:27
2	Eric Källman	1243	Rust	2025-06-30 23:45:22

Solution running time distribution