Parse dateTime

Compute the sum of 5,000,000 UTC Unix timestamps as fast as possible.

Input

One RFC 3339 datetime per line on STDIN:

2017-05-04T14:31:30-03:00
2046-06-23T11:51:56-06:00
2031-08-14T13:18:38+06:00
2048-04-14T05:55:06-09:00
1980-08-28T00:43:03+02:00

Output

Print the sum of all UTC Unix timestamps (int64) to STDOUT.

Constraints

Datetimes are in the range 1950-01-01T00:00:00 to 2050-12-31T23:59:59

Restrictions:30s256Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Date	Author	Language	Status	Score
Apr 28, 2026 09:38	TudyM	CPPclang++18.1.3	Success	5,628
Apr 28, 2026 09:36	TudyM	CPPclang++18.1.3	Success	5,007+0.40 RP
Apr 28, 2026 09:34	TudyM	CPPclang++18.1.3	Success	5,008+43.68 RP
Apr 28, 2026 09:31	TudyM	CPPclang++18.1.3	Success	5,124
Apr 28, 2026 09:30	TudyM	CPPclang++18.1.3	Success	5,256
Apr 28, 2026 09:28	TudyM	CPPclang++18.1.3	Success	5,120+2.29 RP
Apr 28, 2026 09:26	TudyM	CPPclang++18.1.3	Success	5,172
Apr 28, 2026 09:24	TudyM	CPPclang++18.1.3	Success	5,130
Apr 28, 2026 09:21	TudyM	CPPclang++18.1.3	Success	5,136
Apr 28, 2026 09:18	TudyM	CPPclang++18.1.3	Success	5,126+17.35 RP
Apr 28, 2026 09:16	TudyM	CPPclang++18.1.3	Success	5,178
Apr 28, 2026 09:14	TudyM	CPPclang++18.1.3	Success	5,178
Apr 28, 2026 09:12	TudyM	CPPclang++18.1.3	Success	5,172+0.75 RP
Apr 28, 2026 09:10	TudyM	CPPclang++18.1.3	Success	5,831
Apr 28, 2026 09:07	TudyM	CPPclang++18.1.3	Success	5,222
Apr 28, 2026 09:05	TudyM	CPPclang++18.1.3	Success	5,174+48.79 RP
Apr 28, 2026 09:04	TudyM	CPPclang++18.1.3	Success	5,324
Apr 28, 2026 08:58	TudyM	CPPclang++18.1.3	Success	5,313
Apr 28, 2026 08:57	TudyM	CPPclang++18.1.3	Success	5,308+6.01 RP
Apr 28, 2026 08:55	TudyM	CPPclang++18.1.3	Success	5,325+0.71 RP
Apr 28, 2026 08:52	Victor Mercklé	CPPg++14.2.0	Success	7,958+20.96 RP
Apr 28, 2026 08:52	TudyM	CPPclang++18.1.3	Success	8,191
Apr 28, 2026 08:50	TudyM	CPPclang++18.1.3	Success	5,327
Apr 28, 2026 08:48	TudyM	CPPclang++18.1.3	Success	5,327+0.35 RP
Apr 28, 2026 08:45	TudyM	CPPclang++18.1.3	Success	5,394
Apr 28, 2026 08:42	TudyM	CPPclang++18.1.3	Success	5,402
Apr 28, 2026 08:39	TudyM	CPPclang++18.1.3	Success	5,412
Apr 28, 2026 08:37	TudyM	CPPclang++18.1.3	Success	5,410
Apr 28, 2026 08:34	TudyM	CPPclang++18.1.3	Success	5,410
Apr 28, 2026 08:33	TudyM	CPPclang++20.1.2	Success	5,758
Apr 28, 2026 08:29	TudyM	CPPclang++18.1.3	Success	5,400
Apr 28, 2026 08:26	TudyM	CPPclang++18.1.3	Success	5,436
Apr 28, 2026 08:22	TudyM	CPPclang++18.1.3	Success	5,328+29.47 RP
Apr 28, 2026 08:19	TudyM	CPPclang++18.1.3	Error
Apr 28, 2026 08:17	TudyM	CPPclang++18.1.3	Success	5,543
Apr 28, 2026 08:15	TudyM	CPPclang++18.1.3	Success	6,339
Apr 28, 2026 08:13	TudyM	CPPclang++18.1.3	Success	5,413+423.11 RP
Apr 28, 2026 08:11	TudyM	CPPclang++18.1.3	Success	7,021+57.99 RP
Apr 28, 2026 03:42	Charles Cabergs	CPPg++13.3.0	Success	5,982
Apr 28, 2026 01:41	Charles Cabergs	CPPg++13.3.0	Success	5,988
Apr 27, 2026 22:23	Victor Mercklé	CPPg++14.2.0	Success	8,093+1'050.10 RP
Apr 27, 2026 22:11	Victor Mercklé	CPPg++14.2.0	Success	70,357
Apr 27, 2026 22:03	Victor Mercklé	CPPg++14.2.0	Success	53,897+185.54 RP
Apr 27, 2026 21:58	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 01:23	olliecrow	ZIG0.15.1	Error
Apr 27, 2026 01:06	olliecrow	RUSTrust-1.95.0	Success	4,732+204.15 RP
Apr 27, 2026 00:54	olliecrow	CPPg++10.5.0	Success	8,877
Apr 26, 2026 23:52	Charles Cabergs	CPPg++13.3.0	Success	5,969+27.06 RP
Apr 26, 2026 19:47	TudyM	CPPclang++20.1.2	Success	7,566
Apr 26, 2026 19:43	TudyM	CPPg++10.5.0	Success	8,342
Apr 26, 2026 19:41	TudyM	CPPclang++20.1.2	Success	7,319+213.04 RP
Apr 26, 2026 18:42	TudyM	CPPclang++20.1.2	Success	8,671+0.13 RP
Apr 26, 2026 18:41	TudyM	CPPg++14.2.0	Success	9,091
Apr 26, 2026 18:40	TudyM	CPPg++10.5.0	Success	8,672+764.38 RP
Apr 26, 2026 17:13	TudyM	CPPg++10.5.0	Success	25,723+388.76 RP
Apr 24, 2026 23:04	Charles Cabergs	CPPg++13.3.0	Success	6,890
Apr 24, 2026 04:03	Charles Cabergs	CPPg++13.3.0	Success	6,701
Apr 23, 2026 21:08	Charles Cabergs	CPPg++13.3.0	Success	6,067+53.87 RP
Apr 23, 2026 09:52	Charles Cabergs	CPPg++13.3.0	Success	6,272+8.34 RP
Apr 23, 2026 04:40	Charles Cabergs	CPPg++13.3.0	Success	6,366
Apr 22, 2026 15:09	olliecrow	ZIG0.15.1	Success	837,629
Apr 22, 2026 14:44	olliecrow	RUSTrust-1.95.0	Success	6,079
Apr 22, 2026 14:22	olliecrow	CPPg++10.5.0	Success	8,879
Apr 22, 2026 13:16	Ben	CPPg++14.2.0	Success	14,456+167.15 RP
Apr 22, 2026 11:47	olliecrow	CSHARP9.0.15	Success	5,954+655.69 RP
Apr 22, 2026 11:11	olliecrow	CPPg++10.5.0	Success	9,950
Apr 22, 2026 05:43	olliecrow	ZIG0.15.1	Error
Apr 22, 2026 05:17	olliecrow	RUSTrust-1.95.0	Success	6,294
Apr 22, 2026 03:46	olliecrow	CPPclang++18.1.3	Success	6,711
Apr 22, 2026 03:44	olliecrow	CPPclang++18.1.3	Success	7,010
Apr 22, 2026 03:42	olliecrow	CPPg++10.5.0	Success	9,562
Apr 21, 2026 22:16	Ben	CPPg++14.2.0	Error
Apr 21, 2026 22:14	Ben	CPPg++14.2.0	Error
Apr 21, 2026 15:00	Charles Cabergs	CPPg++13.3.0	Success	6,305+198.31 RP
Apr 21, 2026 04:31	Charles Cabergs	CPPg++13.3.0	Success	7,206+19.74 RP
Apr 21, 2026 01:28	Taylor Dettling	RUSTrust-1.95.0	Success	143,118+69.87 RP
Apr 20, 2026 23:03	Charles Cabergs	CPPg++13.3.0	Success	8,242
Apr 20, 2026 19:59	Charles Cabergs	CPPg++13.3.0	Success	7,310+26.25 RP
Apr 20, 2026 18:43	Ben	CPPg++13.3.0	Success	19,062+524.60 RP
Apr 20, 2026 18:43	Ben	CPPclang++18.1.3	Success	21,532
Apr 20, 2026 16:29	Ben	CPPclang++18.1.3	Error
Apr 20, 2026 16:29	Ben	CPPg++13.3.0	Error
Apr 20, 2026 16:29	Ben	CPPg++14.2.0	Error
Apr 20, 2026 15:52	Dominique Garmier	RUSTrust-1.95.0	Success	7,873
Apr 20, 2026 14:53	olliecrow	ZIG0.14.0	Error
Apr 20, 2026 14:51	olliecrow	RUSTrust-1.94.0	Success	5,563
Apr 20, 2026 14:48	olliecrow	CPPg++13.3.0	Success	9,026
Apr 20, 2026 13:59	Dominique Garmier	CPPclang++20.1.2	Success	6,862
Apr 20, 2026 09:50	Dominique Garmier	RUSTrust-1.95.0	Error
Apr 19, 2026 09:45	olliecrow	CPPclang++18.1.3	Success	6,509
Apr 19, 2026 07:48	olliecrow	CPPclang++18.1.3	Success	5,041
Apr 19, 2026 07:46	olliecrow	CPPclang++18.1.3	Success	6,357
Apr 19, 2026 07:38	olliecrow	CPPclang++18.1.3	Success	4,958
Apr 19, 2026 03:49	olliecrow	CPPclang++18.1.3	Success	6,646
Apr 18, 2026 21:20	olliecrow	ZIG0.14.0	Success	46,219
Apr 18, 2026 17:55	Charles Cabergs	CPPg++13.3.0	Success	7,453+294.62 RP
Apr 18, 2026 06:17	Charles Cabergs	CPPg++13.3.0	Success	9,550+233.38 RP
Apr 18, 2026 00:40	Charles Cabergs	CPPg++13.3.0	Success	25,966
Apr 18, 2026 00:23	olliecrow	ZIG0.14.0	Error
Apr 17, 2026 20:47	Charles Cabergs	CPPg++13.3.0	Success	12,289+813.74 RP

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1