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
Jun 10, 2026 22:50	Victor Mercklé	CPPg++14.2.0	Success	3,526
Jun 10, 2026 22:44	Victor Mercklé	CPPg++14.2.0	Success	3,514
Jun 10, 2026 22:38	Victor Mercklé	CPPg++14.2.0	Success	3,536
Jun 10, 2026 22:31	Victor Mercklé	CPPg++14.2.0	Success	3,770
Jun 10, 2026 22:20	Victor Mercklé	CPPg++14.2.0	Success	3,522
Jun 10, 2026 22:15	Victor Mercklé	CPPg++14.2.0	Success	3,517
Jun 10, 2026 22:10	Victor Mercklé	CPPg++14.2.0	Success	3,534
Jun 10, 2026 22:05	Victor Mercklé	CPPg++14.2.0	Success	3,537
Jun 10, 2026 20:44	Victor Mercklé	CSHARP10.0.7	Success	24,788
Jun 10, 2026 20:37	Victor Mercklé	CSHARP10.0.7	Success	25,136
Jun 10, 2026 20:32	Victor Mercklé	CSHARP10.0.7	Error
Jun 10, 2026 20:25	Victor Mercklé	CSHARP10.0.7	Success	26,163
Jun 10, 2026 06:30	Victor Mercklé	CSHARP10.0.7	Success	3,814
Jun 10, 2026 06:23	Victor Mercklé	CSHARP10.0.7	Success	3,813+0.69 RP
Jun 10, 2026 06:14	Victor Mercklé	CSHARP10.0.7	Success	3,836
Jun 10, 2026 06:06	Victor Mercklé	CSHARP10.0.7	Error
Jun 10, 2026 05:57	Victor Mercklé	CSHARP10.0.7	Error
Jun 10, 2026 01:52	Victor Mercklé	ZIG0.16.0	Success	3,539
Jun 10, 2026 01:41	Victor Mercklé	ZIG0.16.0	Success	3,540
Jun 10, 2026 01:29	Victor Mercklé	ZIG0.16.0	Error
Jun 10, 2026 00:49	Victor Mercklé	ZIG0.16.0	Error
Jun 9, 2026 07:53	Victor Mercklé	CSHARP10.0.7	Recalculating
Jun 9, 2026 07:38	Victor Mercklé	CSHARP10.0.7	Recalculating
Jun 8, 2026 18:49	Victor Mercklé	CPPg++14.2.0	Success	3,496+8.97 RP
Jun 8, 2026 18:42	Victor Mercklé	CPPg++14.2.0	Success	3,507+3.25 RP
Jun 8, 2026 18:34	Victor Mercklé	CPPg++14.2.0	Success	3,712
Jun 8, 2026 18:28	Victor Mercklé	CPPg++14.2.0	Success	3,705
Jun 8, 2026 18:23	Victor Mercklé	RUSTrust-1.95.0	Error	+4.05 RP
Jun 8, 2026 18:18	Victor Mercklé	RUSTrust-1.95.0	Success	3,689
Jun 8, 2026 18:13	Victor Mercklé	CPPg++14.2.0	Success	3,528
Jun 8, 2026 18:08	Victor Mercklé	RUSTrust-1.95.0	Success	3,628+2.28 RP
Jun 8, 2026 18:03	Victor Mercklé	RUSTrust-1.95.0	Success	3,631+57.19 RP
Jun 8, 2026 17:58	Victor Mercklé	CPPg++14.2.0	Success	3,516+22.47 RP
Jun 8, 2026 17:53	Victor Mercklé	RUSTrust-1.95.0	Success	4,031
Jun 8, 2026 17:48	Victor Mercklé	RUSTrust-1.95.0	Success	3,708+49.97 RP
Jun 8, 2026 17:43	Victor Mercklé	RUSTrust-1.95.0	Error
Jun 7, 2026 17:52	Victor Mercklé	CPPg++14.2.0	Success	3,597
Jun 7, 2026 17:36	Victor Mercklé	CPPg++14.2.0	Success	3,672
Jun 7, 2026 17:31	Victor Mercklé	CPPg++14.2.0	Success	3,719
Jun 7, 2026 17:24	Victor Mercklé	CPPg++14.2.0	Success	3,544+14.26 RP
Jun 7, 2026 17:19	Victor Mercklé	CPPg++14.2.0	Error	+78.90 RP
Jun 6, 2026 03:34	Victor Mercklé	CPPg++14.2.0	Success	3,717
Jun 6, 2026 03:16	Victor Mercklé	CPPg++14.2.0	Success	3,747
Jun 6, 2026 03:11	Victor Mercklé	CPPg++14.2.0	Success	3,824
Jun 6, 2026 03:06	Victor Mercklé	CPPg++14.2.0	Success	3,714
Jun 5, 2026 07:56	Victor Mercklé	CPPg++14.2.0	Success	4,284
Jun 5, 2026 07:51	Victor Mercklé	CPPg++14.2.0	Success	3,673
Jun 5, 2026 07:44	Victor Mercklé	CPPg++14.2.0	Success	3,926
Jun 5, 2026 07:38	Victor Mercklé	CPPg++14.2.0	Success	3,692
Jun 5, 2026 07:33	Victor Mercklé	CPPg++14.2.0	Success	3,723
Jun 5, 2026 07:27	Victor Mercklé	CPPg++14.2.0	Error	+57.57 RP
Jun 5, 2026 07:21	Victor Mercklé	CPPg++14.2.0	Success	3,954
Jun 5, 2026 07:16	Victor Mercklé	CPPg++14.2.0	Success	5,276
Jun 5, 2026 07:11	Victor Mercklé	CPPg++14.2.0	Error	+62.70 RP
Jun 5, 2026 07:06	Victor Mercklé	CPPg++14.2.0	Success	3,906
Jun 5, 2026 06:58	Victor Mercklé	CPPg++14.2.0	Success	4,051
Jun 5, 2026 06:51	Victor Mercklé	CPPg++14.2.0	Success	4,594
Jun 5, 2026 06:46	Victor Mercklé	CPPg++14.2.0	Success	3,834+46.77 RP
Jun 5, 2026 06:38	Victor Mercklé	CPPg++14.2.0	Success	3,904+25.98 RP
Jun 5, 2026 06:31	Victor Mercklé	CPPg++14.2.0	Success	7,417
Jun 5, 2026 06:26	Victor Mercklé	CPPg++14.2.0	Success	3,944+22.93 RP
May 21, 2026 22:40	M-Rochat	CPPg++13.3.0	Success	4,171
May 21, 2026 22:36	M-Rochat	CPPg++13.3.0	Success	4,169
May 21, 2026 22:32	M-Rochat	CPPg++13.3.0	Success	4,168+2.30 RP
May 21, 2026 22:27	M-Rochat	CPPg++13.3.0	Success	4,172+136.02 RP
May 21, 2026 22:24	M-Rochat	CPPg++13.3.0	Success	4,436
May 21, 2026 22:20	M-Rochat	CPPg++13.3.0	Success	4,423
May 21, 2026 22:16	M-Rochat	CPPg++13.3.0	Success	4,423
May 21, 2026 22:11	M-Rochat	CPPg++13.3.0	Success	4,423+15.23 RP
May 20, 2026 20:52	M-Rochat	CPPclang++20.1.2	Success	5,069
May 20, 2026 20:50	M-Rochat	CPPclang++20.1.2	Success	5,082
May 20, 2026 20:48	M-Rochat	CPPclang++20.1.2	Success	5,051
May 20, 2026 20:46	M-Rochat	CPPclang++20.1.2	Success	5,153
May 20, 2026 20:44	M-Rochat	CPPclang++20.1.2	Success	5,257
May 20, 2026 20:41	M-Rochat	CPPclang++20.1.2	Success	4,979
May 20, 2026 20:39	M-Rochat	CPPclang++20.1.2	Success	4,944
May 20, 2026 20:38	M-Rochat	CPPclang++20.1.2	Success	4,992
May 20, 2026 20:37	M-Rochat	CPPclang++20.1.2	Success	5,060
May 20, 2026 20:35	M-Rochat	CPPclang++20.1.2	Success	5,075
May 20, 2026 20:32	M-Rochat	CPPclang++20.1.2	Success	5,202
May 20, 2026 20:30	M-Rochat	CPPclang++20.1.2	Success	5,077
May 20, 2026 20:26	M-Rochat	CPPclang++20.1.2	Success	4,882
May 20, 2026 20:24	M-Rochat	CPPclang++20.1.2	Success	4,542
May 19, 2026 13:58	M-Rochat	CPPg++13.3.0	Error
May 19, 2026 13:44	M-Rochat	RUSTrust-1.95.0	Error
May 18, 2026 17:47	M-Rochat	CPPclang++20.1.2	Success	8,128
May 18, 2026 17:47	M-Rochat	CPPclang++20.1.2	Success	8,064
May 18, 2026 04:33	M-Rochat	CPPclang++20.1.2	Success	4,460
May 18, 2026 04:26	M-Rochat	CPPclang++20.1.2	Success	4,925
May 18, 2026 03:38	M-Rochat	CPPclang++19.1.1	Success	4,454
May 18, 2026 03:34	M-Rochat	CPPg++13.2.0	Success	4,725
May 18, 2026 03:34	M-Rochat	CPPclang++20.1.2	Success	4,548
May 18, 2026 03:31	M-Rochat	CPPclang++20.1.2	Success	4,453+44.97 RP
May 18, 2026 03:13	M-Rochat	CPPclang++20.1.2	Success	4,546
May 18, 2026 03:06	M-Rochat	CPPclang++19.1.1	Success	4,546+2.42 RP
May 18, 2026 03:06	M-Rochat	CPPclang++18.1.3	Success	4,550
May 18, 2026 03:06	M-Rochat	CPPclang++20.1.2	Success	4,544+0.97 RP
May 18, 2026 03:04	M-Rochat	CPPclang++18.1.3	Success	4,551+7.70 RP
May 18, 2026 02:33	M-Rochat	CPPclang++19.1.1	Success	4,575
May 18, 2026 02:33	M-Rochat	CPPclang++17.0.6	Success	4,967

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