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
Oct 6, 2026 15:17	Karthik Reddy	CPPclang++18.1.3	Success	1,682
Oct 6, 2026 15:14	Karthik Reddy	CPPclang++18.1.3	Success	1,626
Oct 6, 2026 15:12	Karthik Reddy	CPPclang++18.1.3	Success	1,601
Oct 6, 2026 15:09	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 15:07	Karthik Reddy	CPPclang++18.1.3	Success	1,589
Oct 6, 2026 15:02	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 15:00	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 14:57	Karthik Reddy	CPPclang++18.1.3	Success	1,584
Oct 6, 2026 14:55	Karthik Reddy	CPPclang++18.1.3	Success	1,580
Oct 6, 2026 14:52	Karthik Reddy	CPPclang++18.1.3	Success	1,661
Oct 6, 2026 14:50	Karthik Reddy	CPPclang++18.1.3	Success	1,585
Oct 6, 2026 14:47	Karthik Reddy	CPPclang++18.1.3	Success	1,646
Oct 6, 2026 14:42	Karthik Reddy	CPPclang++18.1.3	Success	1,600
Oct 6, 2026 14:30	Karthik Reddy	CPPclang++18.1.3	Success	1,637
Oct 6, 2026 14:27	Karthik Reddy	CPPclang++18.1.3	Success	1,582
Oct 6, 2026 14:23	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 14:20	Karthik Reddy	CPPclang++18.1.3	Success	1,580
Oct 6, 2026 14:16	Karthik Reddy	CPPclang++18.1.3	Success	1,585
Oct 6, 2026 14:13	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 14:10	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 14:06	Karthik Reddy	CPPclang++18.1.3	Success	1,700
Oct 6, 2026 14:03	Karthik Reddy	CPPclang++18.1.3	Success	1,677
Oct 6, 2026 13:59	Karthik Reddy	CPPclang++18.1.3	Success	1,587
Oct 6, 2026 13:56	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 13:52	Karthik Reddy	CPPclang++18.1.3	Success	1,589
Oct 6, 2026 13:49	Karthik Reddy	CPPclang++18.1.3	Success	1,614
Oct 6, 2026 13:45	Karthik Reddy	CPPclang++18.1.3	Success	1,581
Oct 6, 2026 13:42	Karthik Reddy	CPPclang++18.1.3	Success	1,610
Oct 6, 2026 13:39	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 13:35	Karthik Reddy	CPPclang++18.1.3	Success	1,591
Oct 6, 2026 13:33	Karthik Reddy	CPPclang++18.1.3	Success	1,601
Oct 6, 2026 13:29	Karthik Reddy	CPPclang++18.1.3	Success	1,594
Oct 6, 2026 13:26	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 13:22	Karthik Reddy	CPPclang++18.1.3	Success	1,581
Oct 6, 2026 13:19	Karthik Reddy	CPPclang++18.1.3	Success	1,596
Oct 6, 2026 13:15	Karthik Reddy	CPPclang++18.1.3	Success	1,591
Oct 6, 2026 13:12	Karthik Reddy	CPPclang++18.1.3	Success	1,590
Oct 6, 2026 13:09	Karthik Reddy	CPPclang++18.1.3	Success	1,582
Oct 6, 2026 13:05	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 13:02	Karthik Reddy	CPPclang++18.1.3	Success	1,583
Oct 6, 2026 12:58	Karthik Reddy	CPPclang++18.1.3	Success	1,619
Oct 6, 2026 12:55	Karthik Reddy	CPPclang++18.1.3	Success	1,607
Oct 6, 2026 12:51	Karthik Reddy	CPPclang++18.1.3	Success	1,591
Oct 6, 2026 12:48	Karthik Reddy	CPPclang++18.1.3	Success	1,604
Oct 6, 2026 12:45	Karthik Reddy	CPPclang++18.1.3	Success	1,583
Oct 6, 2026 12:41	Karthik Reddy	CPPclang++18.1.3	Success	1,636
Oct 6, 2026 12:38	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 12:34	Karthik Reddy	CPPclang++18.1.3	Success	1,589
Oct 6, 2026 12:31	Karthik Reddy	CPPclang++18.1.3	Success	1,607
Oct 6, 2026 12:27	Karthik Reddy	CPPclang++18.1.3	Success	1,585
Oct 6, 2026 12:23	Karthik Reddy	CPPclang++18.1.3	Success	1,590
Oct 6, 2026 12:18	Karthik Reddy	CPPclang++18.1.3	Success	1,580
Oct 6, 2026 12:15	Karthik Reddy	CPPclang++18.1.3	Success	1,580
Oct 6, 2026 12:12	Karthik Reddy	CPPclang++18.1.3	Success	1,594
Oct 6, 2026 12:08	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 12:05	Karthik Reddy	CPPclang++18.1.3	Success	1,582
Oct 6, 2026 12:01	Karthik Reddy	CPPclang++18.1.3	Success	1,581
Oct 6, 2026 11:58	Karthik Reddy	CPPclang++18.1.3	Success	1,653
Oct 6, 2026 11:54	Karthik Reddy	CPPclang++18.1.3	Success	1,590
Oct 6, 2026 11:51	Karthik Reddy	CPPclang++18.1.3	Success	1,608
Oct 6, 2026 11:47	Karthik Reddy	CPPclang++18.1.3	Success	1,667
Oct 6, 2026 11:44	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 11:41	Karthik Reddy	CPPclang++18.1.3	Success	1,592
Oct 6, 2026 11:37	Karthik Reddy	CPPclang++18.1.3	Success	1,637
Oct 6, 2026 11:34	Karthik Reddy	CPPclang++18.1.3	Success	1,583
Oct 6, 2026 11:30	Karthik Reddy	CPPclang++18.1.3	Success	1,582
Oct 6, 2026 11:27	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 11:23	Karthik Reddy	CPPclang++18.1.3	Success	1,589
Oct 6, 2026 11:20	Karthik Reddy	CPPclang++18.1.3	Success	1,602
Oct 6, 2026 11:16	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 11:13	Karthik Reddy	CPPclang++18.1.3	Success	1,584
Oct 6, 2026 11:09	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 11:06	Karthik Reddy	CPPclang++18.1.3	Success	1,684
Oct 6, 2026 11:03	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 10:59	Karthik Reddy	CPPclang++18.1.3	Success	1,590
Oct 6, 2026 10:56	Karthik Reddy	CPPclang++18.1.3	Success	1,608
Oct 6, 2026 10:52	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 10:49	Karthik Reddy	CPPclang++18.1.3	Success	1,584
Oct 6, 2026 10:45	Karthik Reddy	CPPclang++18.1.3	Success	1,593
Oct 6, 2026 10:42	Karthik Reddy	CPPclang++18.1.3	Success	1,609
Oct 6, 2026 10:38	Karthik Reddy	CPPclang++18.1.3	Success	1,585
Oct 6, 2026 10:35	Karthik Reddy	CPPclang++18.1.3	Success	1,640
Oct 6, 2026 10:30	Karthik Reddy	CPPclang++18.1.3	Success	1,632
Oct 6, 2026 10:27	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 10:23	Karthik Reddy	CPPclang++18.1.3	Success	1,591
Oct 6, 2026 10:20	Karthik Reddy	CPPclang++18.1.3	Success	1,623
Oct 6, 2026 10:16	Karthik Reddy	CPPclang++18.1.3	Success	1,588
Oct 6, 2026 10:13	Karthik Reddy	CPPclang++18.1.3	Success	1,580
Oct 6, 2026 10:09	Karthik Reddy	CPPclang++18.1.3	Success	1,678
Oct 6, 2026 10:06	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 10:02	Karthik Reddy	CPPclang++18.1.3	Success	1,580+4.00 RP
Oct 6, 2026 09:59	Karthik Reddy	CPPclang++18.1.3	Success	1,643
Oct 6, 2026 09:55	Karthik Reddy	CPPclang++18.1.3	Success	1,587
Oct 6, 2026 09:52	Karthik Reddy	CPPclang++18.1.3	Success	1,642
Oct 6, 2026 09:48	Karthik Reddy	CPPclang++18.1.3	Success	1,696
Oct 6, 2026 09:45	Karthik Reddy	CPPclang++18.1.3	Success	1,745
Oct 6, 2026 09:41	Karthik Reddy	CPPclang++18.1.3	Success	1,600
Oct 6, 2026 09:38	Karthik Reddy	CPPclang++18.1.3	Success	1,586
Oct 6, 2026 09:34	Karthik Reddy	CPPclang++18.1.3	Success	1,581+7.99 RP
Oct 6, 2026 09:31	Karthik Reddy	CPPclang++18.1.3	Success	1,591

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