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
Mar 21, 2026 19:38	Josu San Martin	CPPg++13.3.0	Error
Mar 21, 2026 18:48	olliecrow	GOgo1.26.1	Success	18,375
Mar 21, 2026 18:26	olliecrow	ZIG0.14.0	Error
Mar 21, 2026 17:34	Dominique Garmier	RUSTrust-1.94.0	Success	10,045
Mar 21, 2026 16:47	Dominique Garmier	RUSTrust-1.94.0	Success	23,688
Mar 21, 2026 15:51	Dominique Garmier	RUSTrust-1.94.0	Success	32,325
Mar 21, 2026 15:30	Dominique Garmier	RUSTrust-1.94.0	Success	95,537
Mar 21, 2026 13:50	Dominique Garmier	CPPclang++18.1.3	Success	8,036
Mar 21, 2026 12:09	Dominique Garmier	CPPg++13.3.0	Success	8,637
Mar 21, 2026 12:09	Dominique Garmier	CPPclang++18.1.3	Success	8,609
Mar 21, 2026 10:24	Dominique Garmier	CSHARP9.0.14	Success	94,077
Mar 21, 2026 09:54	Dominique Garmier	ZIG0.13.0	Success	185,076
Mar 21, 2026 09:32	Dominique Garmier	ZIG0.13.0	Error
Mar 21, 2026 09:26	Dominique Garmier	ZIG0.13.0	Error
Mar 21, 2026 05:16	olliecrow	RUSTrust-1.94.0	Success	5,671+257.11 RP
Mar 21, 2026 02:59	Dominique Garmier	GOgo1.26.1	Success	40,782
Mar 20, 2026 22:00	Dominique Garmier	RUSTrust-1.94.0	Success	344,685
Mar 20, 2026 11:31	Dominique Garmier	CPPg++13.3.0	Success	14,687
Mar 20, 2026 09:32	Dominique Garmier	CPPg++13.3.0	Success	10,715
Mar 20, 2026 08:43	Dominique Garmier	CPPclang++18.1.3	Success	6,681+26.63 RP
Mar 20, 2026 03:07	Dominique Garmier	CPPg++13.3.0	Success	18,459
Mar 19, 2026 17:02	Dominique Garmier	CPPclang++18.1.3	Success	12,531
Mar 19, 2026 14:18	Dominique Garmier	CPPg++13.3.0	Success	12,483
Mar 19, 2026 05:02	Dominique Garmier	CPPg++13.3.0	Success	19,888
Mar 19, 2026 05:01	Dominique Garmier	CPPclang++18.1.3	Success	8,470
Mar 19, 2026 00:57	Dominique Garmier	CPPclang++18.1.3	Success	6,802
Mar 18, 2026 23:58	Dominique Garmier	CPPclang++18.1.3	Success	6,802
Mar 18, 2026 23:34	Dominique Garmier	CPPclang++18.1.3	Success	6,808
Mar 18, 2026 21:55	Dominique Garmier	CPPclang++18.1.3	Success	7,582
Mar 18, 2026 21:52	Dominique Garmier	CPPclang++18.1.3	Success	8,512
Mar 18, 2026 21:52	Dominique Garmier	CPPclang++18.1.3	Success	6,986
Mar 18, 2026 21:51	Dominique Garmier	CPPg++13.3.0	Success	10,200
Mar 18, 2026 21:50	Dominique Garmier	CPPclang++18.1.3	Success	6,802+468.75 RP
Mar 18, 2026 21:48	Dominique Garmier	CPPclang++18.1.3	Success	10,473
Mar 18, 2026 21:45	Dominique Garmier	CPPg++13.3.0	Success	19,842
Mar 17, 2026 14:50	Dominique Garmier	CPPg++13.3.0	Success	16,415
Mar 15, 2026 22:24	Dominique Garmier	CPPclang++18.1.3	Success	10,704
Mar 15, 2026 22:17	Dominique Garmier	CPPclang++18.1.3	Success	12,366
Mar 15, 2026 22:15	Dominique Garmier	CPPclang++18.1.3	Error
Mar 15, 2026 21:39	Dominique Garmier	CPPclang++18.1.3	Success	10,297
Mar 15, 2026 13:20	Keefe	CPPg++13.3.0	Success	6,088
Mar 15, 2026 12:35	Keefe	CPPg++13.3.0	Success	5,832
Mar 15, 2026 11:49	Keefe	CPPg++13.3.0	Success	5,780+345.64 RP
Mar 15, 2026 11:17	Dominique Garmier	CPPg++13.3.0	Error
Mar 15, 2026 11:09	Keefe	CPPclang++18.1.3	Success	8,590
Mar 15, 2026 11:06	Keefe	CPPg++13.3.0	Success	7,223+555.83 RP
Mar 13, 2026 15:50	Dominique Garmier	CPPclang++18.1.3	Success	10,307
Mar 13, 2026 15:47	Dominique Garmier	CPPclang++18.1.3	Success	9,986+188.13 RP
Mar 13, 2026 15:42	Dominique Garmier	CPPclang++18.1.3	Success	12,296+35.85 RP
Mar 13, 2026 15:41	Dominique Garmier	CPPclang++18.1.3	Success	15,862
Mar 13, 2026 12:36	Dominique Garmier	CPPg++13.3.0	Error
Mar 13, 2026 11:23	Dominique Garmier	CPPg++13.3.0	Success	12,863+777.42 RP
Mar 13, 2026 11:21	Dominique Garmier	CPPg++13.3.0	Error
Mar 6, 2026 01:39	Sergey Serebryakov	CPPg++13.3.0	Error
Mar 6, 2026 01:36	Sergey Serebryakov	CPPg++13.3.0	Error
Mar 6, 2026 01:35	Sergey Serebryakov	CPPg++13.3.0	Error
Mar 4, 2026 04:25	Josu San Martin	CPPg++13.3.0	Success	5,706+78.62 RP
Mar 4, 2026 04:25	Josu San Martin	RUSTrust-1.92.0	Error
Mar 4, 2026 04:02	Josu San Martin	RUSTrust-1.92.0	Success	6,639+0.91 RP
Mar 4, 2026 03:55	Josu San Martin	CPPg++13.3.0	Success	8,240
Mar 4, 2026 03:38	Josu San Martin	CPPclang++18.1.3	Success	5,974+168.58 RP
Mar 4, 2026 03:34	Josu San Martin	RUSTrust-1.92.0	Success	6,643+19.82 RP
Mar 4, 2026 03:24	Josu San Martin	CPPclang++18.1.3	Success	7,227
Mar 4, 2026 03:19	Josu San Martin	CPPclang++18.1.3	Error
Mar 4, 2026 03:02	Josu San Martin	CPPclang++18.1.3	Error
Mar 4, 2026 03:02	Josu San Martin	CPPg++13.3.0	Error
Mar 4, 2026 02:59	Josu San Martin	CSHARP9.0.13	Success	11,077+407.82 RP
Mar 3, 2026 22:11	olliecrow	CPPclang++18.1.3	Success	4,852
Feb 22, 2026 10:16	olliecrow	CPPclang++18.1.3	Success	4,714+0.45 RP
Feb 22, 2026 10:10	olliecrow	CPPclang++18.1.3	Success	4,715
Feb 22, 2026 10:04	olliecrow	CPPclang++18.1.3	Success	4,737
Feb 22, 2026 09:58	olliecrow	CPPclang++18.1.3	Success	4,736
Feb 22, 2026 09:51	olliecrow	CPPclang++18.1.3	Success	4,715+1.80 RP
Feb 22, 2026 09:38	olliecrow	CPPclang++18.1.3	Success	5,184
Feb 22, 2026 09:34	olliecrow	CPPclang++18.1.3	Success	4,906
Feb 22, 2026 09:28	olliecrow	CPPclang++18.1.3	Success	4,722
Feb 22, 2026 09:22	olliecrow	CPPclang++18.1.3	Success	4,746
Feb 22, 2026 09:18	olliecrow	CPPclang++18.1.3	Success	4,724
Feb 22, 2026 09:08	olliecrow	CPPclang++18.1.3	Success	4,719+46.98 RP
Feb 22, 2026 09:03	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 08:59	olliecrow	CPPclang++18.1.3	Success	6,641
Feb 22, 2026 08:55	olliecrow	CPPclang++18.1.3	Success	4,906
Feb 22, 2026 08:51	olliecrow	CPPclang++18.1.3	Success	4,826+1.29 RP
Feb 22, 2026 08:47	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 08:42	olliecrow	CPPclang++18.1.3	Success	5,252
Feb 22, 2026 08:37	olliecrow	CPPclang++18.1.3	Success	5,168
Feb 22, 2026 08:32	olliecrow	CPPclang++18.1.3	Success	4,829+149.96 RP
Feb 22, 2026 08:28	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 08:23	olliecrow	CPPclang++18.1.3	Success	5,206+635.51 RP
Feb 22, 2026 08:17	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 08:00	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 07:55	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 07:49	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 07:43	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 07:38	olliecrow	CPPclang++18.1.3	Success	8,386
Feb 22, 2026 07:33	olliecrow	CPPclang++18.1.3	Success	7,919
Feb 22, 2026 07:23	olliecrow	CPPclang++18.1.3	Success	7,780+4.45 RP
Feb 22, 2026 07:16	olliecrow	CPPclang++18.1.3	Success	7,907
Feb 22, 2026 07:11	olliecrow	CPPclang++18.1.3	Success	7,807+6.37 RP
Feb 22, 2026 06:58	olliecrow	CPPg++13.3.0	Success	8,516

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