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
Aug 17, 2026 09:52	marko1597	CPPclang++18.1.3	Success	4,053
Aug 17, 2026 09:52	marko1597	CPPclang++19.1.1	Success	3,972+33.15 RP
Aug 17, 2026 09:41	marko1597	CPPclang++20.1.2	Success	4,025+38.29 RP
Aug 17, 2026 09:41	marko1597	CPPclang++20.1.2	Success	4,088+514.56 RP
Aug 17, 2026 09:41	marko1597	CPPclang++20.1.2	Success	5,226
Aug 17, 2026 09:41	marko1597	CPPclang++20.1.2	Success	5,177+133.38 RP
Aug 17, 2026 09:21	marko1597	CPPclang++16.0.6	Success	5,636
Aug 17, 2026 09:21	marko1597	CPPclang++20.1.2	Success	5,561+162.38 RP
Aug 17, 2026 09:21	marko1597	CPPg++13.3.0	Success	6,221
Aug 17, 2026 09:21	marko1597	CPPg++14.2.0	Success	6,113+664.89 RP
Aug 17, 2026 09:21	marko1597	CPPg++14.2.0	Success	11,002
Aug 17, 2026 09:07	marko1597	CPPg++14.2.0	Success	10,299+970.97 RP
Aug 17, 2026 08:51	marko1597	CPPg++14.2.0	Error
Aug 17, 2026 08:51	marko1597	CPPg++14.2.0	Error
Aug 16, 2026 23:10	Tomislav Tunkovic	ZIG0.15.1	Success	4,753
Aug 16, 2026 23:10	Tomislav Tunkovic	GOgo1.26.2	Success	7,900
Aug 16, 2026 23:10	Tomislav Tunkovic	RUSTrust-1.95.0	Success	3,064
Aug 15, 2026 08:30	Tomislav Tunkovic	CPPg++13.3.0	Success	2,360
Aug 15, 2026 08:24	Tomislav Tunkovic	CPPg++13.3.0	Success	2,348+163.66 RP
Aug 15, 2026 08:19	Tomislav Tunkovic	CPPg++13.3.0	Error
Aug 15, 2026 08:16	Tomislav Tunkovic	CPPg++13.3.0	Success	2,526
Aug 15, 2026 08:10	Tomislav Tunkovic	CPPg++13.3.0	Success	2,396+55.01 RP
Aug 15, 2026 08:04	Tomislav Tunkovic	CPPg++14.2.0	Success	2,430
Aug 15, 2026 07:58	Tomislav Tunkovic	CPPg++13.3.0	Success	2,428+172.29 RP
Aug 15, 2026 07:51	Tomislav Tunkovic	CPPclang++20.1.2	Success	2,534+321.83 RP
Aug 15, 2026 07:34	Tomislav Tunkovic	CPPclang++20.1.2	Success	2,759+1'245.81 RP
Aug 14, 2026 16:17	Tomislav Tunkovic	CPPclang++20.1.2	Success	4,204+216.99 RP
Aug 14, 2026 14:47	Tomislav Tunkovic	CPPclang++20.1.2	Success	4,626+0.47 RP
Aug 14, 2026 14:37	Tomislav Tunkovic	CPPclang++20.1.2	Success	4,627+144.29 RP
Aug 14, 2026 14:35	Tomislav Tunkovic	CPPclang++20.1.2	Success	4,958+418.99 RP
Aug 14, 2026 14:14	Tomislav Tunkovic	CPPclang++20.1.2	Success	6,258+150.57 RP
Aug 14, 2026 14:10	Tomislav Tunkovic	CPPclang++20.1.2	Success	6,909+1'447.39 RP
Jul 31, 2026 06:15	Tony	CPPg++10.5.0	Success	77,890+128.39 RP
Jul 16, 2026 16:08	Andrew Tsibin	RUSTrust-1.95.0	Success	3,730+600.67 RP
Jul 16, 2026 15:48	Andrew Tsibin	RUSTrust-1.95.0	Success	4,848
Jul 16, 2026 15:32	Andrew Tsibin	RUSTrust-1.95.0	Success	5,820
Jul 16, 2026 14:14	Andrew Tsibin	RUSTrust-1.95.0	Success	4,807+2'080.30 RP
Jul 15, 2026 01:34	Victor Mercklé	CPPg++14.2.0	Success	2,760
Jul 15, 2026 01:29	Victor Mercklé	CPPg++14.2.0	Success	2,992
Jul 15, 2026 01:24	Victor Mercklé	CPPg++14.2.0	Success	3,880
Jul 10, 2026 18:27	Genos0	CPPg++10.5.0	Success	76,716+130.35 RP
Jul 9, 2026 01:36	Victor Mercklé	GOgo1.26.2	Success	2,709+12.22 RP
Jul 8, 2026 08:19	Victor Mercklé	GOgo1.26.2	Success	2,718+1.35 RP
Jul 8, 2026 02:22	Victor Mercklé	GOgo1.26.2	Success	2,719+26.86 RP
Jul 8, 2026 02:05	Victor Mercklé	GOgo1.26.2	Success	2,739+14.60 RP
Jul 7, 2026 20:56	Victor Mercklé	CPPg++14.2.0	Success	2,572
Jul 7, 2026 07:31	Victor Mercklé	CPPg++14.2.0	Success	2,879
Jul 7, 2026 07:19	Victor Mercklé	CPPg++14.2.0	Success	21,496
Jul 7, 2026 07:07	Victor Mercklé	CPPg++14.2.0	Success	2,555
Jul 7, 2026 07:02	Victor Mercklé	CPPg++14.2.0	Success	2,546
Jul 7, 2026 06:48	Victor Mercklé	CPPg++14.2.0	Success	2,554
Jul 7, 2026 06:29	Victor Mercklé	CPPg++14.2.0	Success	4,703
Jul 7, 2026 06:20	Victor Mercklé	CPPg++14.2.0	Success	2,799
Jul 7, 2026 06:12	Victor Mercklé	CPPg++14.2.0	Success	2,407
Jul 7, 2026 05:31	Victor Mercklé	CSHARP10.0.7	Error
Jul 7, 2026 03:32	Victor Mercklé	ZIG0.16.0	Error
Jul 7, 2026 03:21	Victor Mercklé	GOgo1.26.2	Error
Jul 7, 2026 02:14	Victor Mercklé	GOgo1.26.2	Error
Jul 7, 2026 02:02	Victor Mercklé	RUSTrust-1.95.0	Error	+7.00 RP
Jul 3, 2026 14:39	Victor Mercklé	CPPg++14.2.0	Success	6,269
Jul 3, 2026 14:34	Victor Mercklé	CPPg++14.2.0	Success	2,541
Jul 3, 2026 14:29	Victor Mercklé	CPPg++14.2.0	Success	2,787
Jul 3, 2026 14:23	Victor Mercklé	CPPg++14.2.0	Success	2,628
Jul 3, 2026 14:18	Victor Mercklé	CPPg++14.2.0	Success	2,567
Jul 3, 2026 11:24	Victor Mercklé	CPPg++14.2.0	Success	2,613
Jul 3, 2026 11:15	Victor Mercklé	CPPg++14.2.0	Success	2,782
Jul 3, 2026 11:08	Victor Mercklé	CPPg++14.2.0	Success	2,541
Jul 3, 2026 02:43	f0xeri	CPPg++10.5.0	Success	76,948+129.96 RP
Jul 2, 2026 17:30	A_Shaman	CPPg++10.5.0	Success	23,209
Jul 2, 2026 17:16	A_Shaman	CPPg++10.5.0	Success	27,766
Jul 2, 2026 17:09	A_Shaman	CPPg++10.5.0	Success	23,043+36.94 RP
Jul 2, 2026 17:03	A_Shaman	CPPg++10.5.0	Success	25,686
Jul 2, 2026 16:43	A_Shaman	CPPg++10.5.0	Success	25,187+24.24 RP
Jul 2, 2026 16:39	A_Shaman	CPPg++10.5.0	Error
Jul 2, 2026 16:32	A_Shaman	CPPg++10.5.0	Success	26,825+2.25 RP
Jul 2, 2026 16:26	A_Shaman	CPPg++10.5.0	Success	26,988+38.98 RP
Jul 2, 2026 16:12	A_Shaman	CPPg++10.5.0	Error
Jul 1, 2026 23:47	Victor Mercklé	CPPg++14.2.0	Success	6,215
Jul 1, 2026 23:34	Victor Mercklé	CPPg++14.2.0	Success	2,392+31.34 RP
Jul 1, 2026 23:29	Victor Mercklé	CPPg++14.2.0	Success	2,518
Jul 1, 2026 22:12	Victor Mercklé	CPPg++14.2.0	Error	+30.99 RP
Jul 1, 2026 22:00	Victor Mercklé	CPPg++14.2.0	Success	2,532
Jul 1, 2026 21:50	Victor Mercklé	CPPg++14.2.0	Success	2,639
Jul 1, 2026 21:41	Victor Mercklé	CPPg++14.2.0	Error	+70.55 RP
Jul 1, 2026 21:36	Victor Mercklé	CPPg++14.2.0	Error	+502.14 RP
Jul 1, 2026 21:21	Victor Mercklé	CPPg++14.2.0	Success	2,814
Jul 1, 2026 21:11	Victor Mercklé	CPPg++14.2.0	Error	+11.38 RP
Jul 1, 2026 21:01	Victor Mercklé	CPPg++14.2.0	Success	2,847
Jul 1, 2026 20:53	Victor Mercklé	CPPg++14.2.0	Error	+148.52 RP
Jul 1, 2026 20:47	Victor Mercklé	CPPg++14.2.0	Error	+269.51 RP
Jul 1, 2026 02:54	Victor Mercklé	CPPg++14.2.0	Success	3,261
Jul 1, 2026 02:48	Victor Mercklé	CPPg++14.2.0	Success	3,324
Jul 1, 2026 02:43	Victor Mercklé	CPPg++14.2.0	Success	3,242
Jul 1, 2026 02:36	Victor Mercklé	CPPg++14.2.0	Success	3,289
Jul 1, 2026 02:31	Victor Mercklé	CPPg++14.2.0	Success	3,298
Jul 1, 2026 02:25	Victor Mercklé	CPPg++14.2.0	Success	3,225
Jul 1, 2026 02:20	Victor Mercklé	CPPg++14.2.0	Success	3,793
Jul 1, 2026 02:11	Victor Mercklé	CPPg++14.2.0	Success	3,259
Jul 1, 2026 01:52	Victor Mercklé	CPPg++14.2.0	Success	7,292
Jul 1, 2026 01:37	Victor Mercklé	CPPg++14.2.0	Success	3,259

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