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
Apr 13, 2026 22:24	Yuriy Lyfenko	CPPg++13.3.0	Success	3,007
Apr 13, 2026 22:24	Yuriy Lyfenko	CPPg++13.3.0	Success	3,018
Apr 13, 2026 22:23	Yuriy Lyfenko	CPPg++13.3.0	Success	3,031
Apr 11, 2026 11:26	limanjun99	CPPg++13.3.0	Success	4,099
Apr 11, 2026 11:23	limanjun99	CPPg++13.3.0	Success	4,113
Apr 11, 2026 11:22	limanjun99	CPPg++13.3.0	Success	4,093+10.70 RP
Apr 11, 2026 11:15	limanjun99	CPPg++13.3.0	Success	4,129
Apr 11, 2026 11:15	limanjun99	CPPg++13.3.0	Success	4,111+21.12 RP
Apr 11, 2026 11:14	limanjun99	CPPg++13.3.0	Success	4,147+28.73 RP
Apr 11, 2026 10:46	limanjun99	CPPg++13.3.0	Success	4,287
Apr 11, 2026 10:37	limanjun99	CPPg++13.3.0	Success	4,197+1.13 RP
Apr 11, 2026 10:36	limanjun99	CPPg++13.3.0	Success	4,202
Apr 11, 2026 10:35	limanjun99	CPPg++13.3.0	Success	4,242
Apr 11, 2026 10:33	limanjun99	CPPg++13.3.0	Success	4,199+18.57 RP
Apr 11, 2026 10:30	limanjun99	CPPg++13.3.0	Success	4,232+27.59 RP
Apr 11, 2026 10:29	limanjun99	CPPg++13.3.0	Success	4,282+120.52 RP
Apr 11, 2026 10:24	limanjun99	CPPg++13.3.0	Success	7,481
Apr 11, 2026 10:13	limanjun99	CPPg++13.3.0	Success	4,515+15.59 RP
Apr 11, 2026 10:11	limanjun99	CPPg++13.3.0	Success	4,547+24.87 RP
Apr 11, 2026 10:09	limanjun99	CPPg++13.3.0	Success	4,599+211.29 RP
Apr 11, 2026 09:02	limanjun99	CPPg++13.3.0	Success	5,114
Apr 11, 2026 09:01	limanjun99	CPPg++13.3.0	Success	5,221
Apr 11, 2026 09:01	limanjun99	CPPg++13.3.0	Success	5,252
Apr 11, 2026 08:58	limanjun99	CPPg++13.3.0	Success	5,094+33.34 RP
Apr 11, 2026 08:53	limanjun99	CPPg++13.3.0	Success	8,628
Apr 11, 2026 08:52	limanjun99	CPPg++13.3.0	Success	8,087
Apr 11, 2026 08:43	limanjun99	CPPg++13.3.0	Success	5,182+17.71 RP
Apr 11, 2026 08:42	limanjun99	CPPg++13.3.0	Success	5,230+9.82 RP
Apr 11, 2026 08:42	limanjun99	CPPg++13.3.0	Success	5,308
Apr 11, 2026 08:38	limanjun99	CPPg++13.3.0	Success	5,257+23.94 RP
Apr 11, 2026 08:38	limanjun99	CPPg++13.3.0	Success	5,381
Apr 11, 2026 08:37	limanjun99	CPPg++13.3.0	Success	5,324+170.05 RP
Apr 11, 2026 08:33	limanjun99	CPPg++13.3.0	Success	5,854+79.83 RP
Apr 11, 2026 08:31	limanjun99	CPPg++13.3.0	Success	6,141+177.65 RP
Apr 11, 2026 07:32	limanjun99	CPPg++13.3.0	Success	6,893+83.32 RP
Apr 11, 2026 07:27	limanjun99	CPPg++13.3.0	Error
Apr 11, 2026 07:23	limanjun99	CPPg++13.3.0	Success	7,313+49.38 RP
Apr 11, 2026 07:04	limanjun99	CPPg++13.3.0	Success	7,912
Apr 11, 2026 07:02	limanjun99	CPPg++13.3.0	Success	7,587+62.71 RP
Apr 11, 2026 06:46	limanjun99	CPPg++13.3.0	Success	8,194
Apr 11, 2026 06:44	limanjun99	CPPg++13.3.0	Success	7,966+323.46 RP
Apr 11, 2026 06:13	Josu San Martin	CPPg++13.3.0	Success	4,988
Apr 11, 2026 06:10	Josu San Martin	CPPg++13.3.0	Success	5,229
Apr 11, 2026 05:45	Josu San Martin	CPPg++13.3.0	Success	5,386
Apr 11, 2026 05:39	Josu San Martin	CPPg++13.3.0	Success	4,987+38.26 RP
Apr 11, 2026 05:38	Josu San Martin	CPPclang++18.1.3	Success	5,084+44.99 RP
Apr 11, 2026 05:30	Josu San Martin	CPPg++13.3.0	Success	5,203+33.04 RP
Apr 11, 2026 05:23	Josu San Martin	CPPclang++18.1.3	Success	5,294+2.14 RP
Apr 11, 2026 05:15	Josu San Martin	CPPclang++18.1.3	Success	5,400
Apr 11, 2026 05:06	Josu San Martin	CPPclang++18.1.3	Success	5,300+10.27 RP
Apr 11, 2026 05:03	Josu San Martin	CPPclang++18.1.3	Success	7,650
Apr 11, 2026 04:56	Josu San Martin	CPPclang++18.1.3	Success	5,370
Apr 11, 2026 04:51	Josu San Martin	CPPclang++18.1.3	Success	5,398
Apr 11, 2026 04:43	Josu San Martin	CPPclang++18.1.3	Success	5,360
Apr 11, 2026 04:31	Josu San Martin	CPPclang++18.1.3	Success	5,329+12.59 RP
Apr 11, 2026 04:29	Josu San Martin	CPPclang++18.1.3	Success	7,093
Apr 11, 2026 04:14	Josu San Martin	RUSTrust-1.94.1	Success	5,449
Apr 11, 2026 03:45	Josu San Martin	RUSTrust-1.94.1	Success	5,471
Apr 11, 2026 03:41	Josu San Martin	RUSTrust-1.94.1	Success	5,435+5.06 RP
Apr 11, 2026 03:39	Josu San Martin	RUSTrust-1.92.0	Success	5,450+8.04 RP
Apr 11, 2026 03:29	Josu San Martin	RUSTrust-1.94.1	Error
Apr 11, 2026 03:23	Josu San Martin	RUSTrust-1.94.1	Success	5,490
Apr 11, 2026 03:20	Josu San Martin	RUSTrust-1.94.1	Success	5,475
Apr 11, 2026 03:15	Josu San Martin	CPPg++13.3.0	Success	5,433
Apr 11, 2026 03:15	Josu San Martin	CPPclang++18.1.3	Success	5,385
Apr 11, 2026 03:14	Josu San Martin	RUSTrust-1.94.1	Success	5,478
Apr 11, 2026 03:09	Josu San Martin	RUSTrust-1.94.1	Success	5,476
Apr 11, 2026 02:59	Josu San Martin	RUSTrust-1.94.1	Success	5,474+17.85 RP
Apr 11, 2026 01:40	Josu San Martin	CPPclang++18.1.3	Success	5,365+2.08 RP
Apr 11, 2026 01:07	Josu San Martin	CPPg++13.3.0	Success	5,984
Apr 11, 2026 00:18	Josu San Martin	CPPclang++18.1.3	Success	8,030
Apr 11, 2026 00:04	Josu San Martin	CPPg++13.3.0	Success	5,402
Apr 11, 2026 00:03	Josu San Martin	CPPclang++18.1.3	Success	5,378
Apr 10, 2026 23:35	Josu San Martin	CPPclang++18.1.3	Success	5,371+80.59 RP
Apr 10, 2026 23:28	Josu San Martin	CPPg++13.3.0	Success	8,681
Apr 10, 2026 23:26	Josu San Martin	CPPg++13.3.0	Error
Apr 10, 2026 23:19	Josu San Martin	CPPg++13.3.0	Error
Apr 10, 2026 23:19	Josu San Martin	CPPg++13.3.0	Error
Apr 10, 2026 23:09	Josu San Martin	CPPg++13.3.0	Error
Apr 10, 2026 22:58	Josu San Martin	CPPg++13.3.0	Success	5,614+28.72 RP
Apr 10, 2026 22:58	Josu San Martin	CPPclang++18.1.3	Success	6,269
Apr 10, 2026 22:57	Josu San Martin	CPPg++13.3.0	Success	5,975
Apr 10, 2026 22:57	Josu San Martin	CPPg++13.3.0	Success	5,907
Apr 10, 2026 16:24	limanjun99	CPPg++13.3.0	Success	10,731+7.67 RP
Apr 10, 2026 16:17	limanjun99	CPPg++13.3.0	Success	10,937
Apr 10, 2026 16:09	limanjun99	CPPg++13.3.0	Success	10,820
Apr 10, 2026 15:44	limanjun99	CPPg++13.3.0	Success	10,820+89.70 RP
Apr 10, 2026 15:30	limanjun99	CPPg++13.3.0	Success	11,983+177.61 RP
Apr 10, 2026 15:17	limanjun99	CPPg++13.3.0	Success	15,223+656.90 RP
Apr 10, 2026 15:12	limanjun99	CPPg++13.3.0	Error
Apr 10, 2026 14:58	limanjun99	CPPg++13.3.0	Error
Apr 9, 2026 01:44	olliecrow	ZIG0.14.0	Error
Apr 8, 2026 13:20	olliecrow	CPPclang++18.1.3	Success	4,883
Apr 8, 2026 13:17	olliecrow	CPPclang++18.1.3	Success	4,887
Apr 8, 2026 13:15	olliecrow	CPPclang++18.1.3	Success	4,900
Apr 8, 2026 13:10	olliecrow	CPPclang++18.1.3	Success	7,021
Apr 1, 2026 21:32	olliecrow	CSHARP9.0.14	Success	9,767+12.94 RP
Mar 30, 2026 16:04	Dominique Garmier	RUSTrust-1.94.1	Success	8,641
Mar 30, 2026 16:03	Dominique Garmier	RUSTrust-1.94.1	Success	9,918
Mar 30, 2026 14:25	Dominique Garmier	RUSTrust-1.94.1	Success	8,014

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