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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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
Sep 27, 2026 00:58	Kevin Heavey	RUSTrust-1.95.0	Success	1,928
Sep 27, 2026 00:55	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:55	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:53	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:52	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:51	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:50	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:49	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:48	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:45	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:44	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:42	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 27, 2026 00:41	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:37	Kevin Heavey	CPPg++13.3.0	Error
Sep 27, 2026 00:36	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 27, 2026 00:35	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 27, 2026 00:34	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 23:44	Kevin Heavey	RUSTrust-1.95.0	Success	1,866
Sep 26, 2026 23:38	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 23:37	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 23:34	Kevin Heavey	RUSTrust-1.95.0	Success	1,856
Sep 26, 2026 23:32	Kevin Heavey	RUSTrust-1.95.0	Success	1,816
Sep 26, 2026 23:29	Kevin Heavey	RUSTrust-1.95.0	Success	1,860
Sep 26, 2026 23:27	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 23:23	Kevin Heavey	RUSTrust-1.95.0	Success	1,761
Sep 26, 2026 23:21	Kevin Heavey	RUSTrust-1.95.0	Success	1,849
Sep 26, 2026 23:18	Kevin Heavey	RUSTrust-1.95.0	Success	1,873
Sep 26, 2026 23:13	Kevin Heavey	RUSTrust-1.95.0	Success	1,863
Sep 26, 2026 23:11	Kevin Heavey	CPPg++13.3.0	Success	1,779
Sep 26, 2026 23:08	Kevin Heavey	RUSTrust-1.95.0	Success	1,848
Sep 26, 2026 23:05	Kevin Heavey	RUSTrust-1.95.0	Success	1,863
Sep 26, 2026 23:03	Kevin Heavey	RUSTrust-1.95.0	Success	1,871
Sep 26, 2026 23:00	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 22:59	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 22:59	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 22:58	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 22:56	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 22:55	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 22:54	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 22:54	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 22:50	Kevin Heavey	RUSTrust-1.95.0	Success	1,882
Sep 26, 2026 22:01	Kevin Heavey	RUSTrust-1.95.0	Success	1,849
Sep 26, 2026 22:00	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 21:58	Kevin Heavey	CSHARP9.0.18	Error
Sep 26, 2026 21:57	Kevin Heavey	ZIG0.15.1	Error
Sep 26, 2026 21:56	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 21:53	Kevin Heavey	CPPg++13.3.0	Success	1,625
Sep 26, 2026 21:50	Kevin Heavey	RUSTrust-1.95.0	Success	1,870
Sep 26, 2026 21:46	Kevin Heavey	RUSTrust-1.95.0	Error
Sep 26, 2026 21:46	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 21:43	Kevin Heavey	RUSTrust-1.95.0	Success	1,835
Sep 26, 2026 21:39	Kevin Heavey	CPPg++13.3.0	Success	1,837
Sep 26, 2026 21:36	Kevin Heavey	RUSTrust-1.95.0	Success	1,856
Sep 26, 2026 21:33	Kevin Heavey	CPPg++13.3.0	Success	1,632
Sep 26, 2026 21:30	Kevin Heavey	CPPg++13.3.0	Success	1,628
Sep 26, 2026 21:28	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 21:24	Kevin Heavey	CPPg++13.3.0	Success	1,879
Sep 26, 2026 21:22	Kevin Heavey	CPPg++13.3.0	Error
Sep 26, 2026 21:20	Kevin Heavey	CPPg++13.3.0	Success	1,816
Sep 26, 2026 21:16	Kevin Heavey	RUSTrust-1.95.0	Success	1,866
Sep 26, 2026 21:13	Kevin Heavey	CPPg++13.3.0	Success	1,616
Sep 26, 2026 21:10	Kevin Heavey	RUSTrust-1.95.0	Success	1,833
Sep 26, 2026 21:05	Kevin Heavey	GOgo1.26.2	Success	1,815
Sep 26, 2026 21:02	Kevin Heavey	ZIG0.15.1	Success	1,836
Sep 26, 2026 20:59	Kevin Heavey	RUSTrust-1.95.0	Success	1,858
Sep 26, 2026 19:54	Kevin Heavey	CPPg++13.3.0	Success	1,687
Sep 26, 2026 19:00	Kevin Heavey	CSHARP9.0.18	Success	1,705+51.15 RP
Sep 26, 2026 18:57	Kevin Heavey	GOgo1.26.2	Success	1,861
Sep 26, 2026 18:54	Kevin Heavey	ZIG0.15.1	Success	1,826
Sep 26, 2026 18:51	Kevin Heavey	RUSTrust-1.95.0	Success	1,842
Sep 25, 2026 08:51	Matthias Görgens	CPPclang++19.1.1	Success	12,364
Sep 23, 2026 18:04	Matthias Görgens	CPPclang++19.1.1	Success	11,983+839.52 RP
Sep 23, 2026 18:01	Matthias Görgens	CPPclang++19.1.1	Error
Sep 23, 2026 17:58	Matthias Görgens	CPPclang++19.1.1	Error
Sep 23, 2026 17:56	Matthias Görgens	CPPclang++19.1.1	Error
Sep 23, 2026 13:23	Kevin Heavey	CPPg++13.3.0	Success	1,602+210.68 RP
Sep 23, 2026 13:15	Kevin Heavey	CPPg++13.3.0	Success	1,645
Sep 23, 2026 13:11	Kevin Heavey	CPPg++13.3.0	Success	1,631+55.87 RP
Sep 23, 2026 13:01	Kevin Heavey	CPPg++13.3.0	Success	1,646+247.83 RP
Sep 23, 2026 12:54	Kevin Heavey	CPPg++13.3.0	Success	1,761
Sep 23, 2026 12:54	Kevin Heavey	CPPg++13.3.0	Success	1,716+735.86 RP
Sep 23, 2026 12:38	Kevin Heavey	CPPg++13.3.0	Success	1,964+5'096.65 RP
Sep 23, 2026 12:20	Kevin Heavey	CPPg++13.3.0	Error
Sep 23, 2026 07:34	githubskribble24	CPPg++10.5.0	Success	76,681+135.41 RP
Sep 21, 2026 23:50	Andrew Epstein	CSHARP10.0.7	Success	1,720+20.21 RP
Sep 21, 2026 23:35	Andrew Epstein	CSHARP10.0.7	Success	1,735
Sep 21, 2026 23:27	Andrew Epstein	CPPg++14.2.0	Success	19,887
Sep 21, 2026 23:26	Andrew Epstein	CSHARP9.0.15	Success	1,766
Sep 21, 2026 23:10	Andrew Epstein	CSHARP9.0.15	Success	1,792
Sep 21, 2026 23:09	Andrew Epstein	ZIG0.15.1	Success	1,655+29.07 RP
Sep 21, 2026 23:09	Andrew Epstein	RUSTrust-1.95.0	Success	1,654+50.75 RP
Sep 21, 2026 23:09	Andrew Epstein	GOgo1.26.2	Success	1,713+57.36 RP
Sep 21, 2026 21:54	Andrew Epstein	CPPg++13.3.0	Success	1,628+148.93 RP
Sep 21, 2026 21:54	Andrew Epstein	CPPg++14.2.0	Success	1,666
Sep 21, 2026 21:48	Andrew Epstein	CPPg++14.2.0	Success	1,805
Sep 21, 2026 21:47	Andrew Epstein	CPPclang++20.1.2	Success	1,680
Sep 21, 2026 21:46	Andrew Epstein	CPPg++14.2.0	Success	25,831
Sep 21, 2026 21:41	Andrew Epstein	CPPg++14.2.0	Success	1,663
Sep 21, 2026 21:40	Andrew Epstein	CPPg++14.2.0	Success	1,741
Sep 21, 2026 21:38	Andrew Epstein	CPPg++14.2.0	Success	10,753

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