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
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
May 17, 2026 23:29	M-Rochat	CPPclang++18.1.3	Success	4,739
May 17, 2026 23:28	M-Rochat	CPPclang++18.1.3	Success	5,100
May 17, 2026 21:40	Aleksei Shahoika	CPPclang++18.1.3	Success	4,321
May 17, 2026 21:27	Aleksei Shahoika	CPPg++10.5.0	Success	5,236
May 17, 2026 21:11	Aleksei Shahoika	CPPclang++18.1.3	Success	4,283
May 17, 2026 20:54	Aleksei Shahoika	CPPclang++18.1.3	Success	4,078+84.20 RP
May 17, 2026 19:08	Aleksei Shahoika	CPPclang++18.1.3	Success	4,879
May 17, 2026 18:49	Aleksei Shahoika	CPPclang++18.1.3	Success	4,223+275.50 RP
May 17, 2026 18:22	Aleksei Shahoika	CPPclang++18.1.3	Success	4,779+293.60 RP
May 17, 2026 18:05	Aleksei Shahoika	CPPclang++18.1.3	Success	6,972
May 17, 2026 17:51	Aleksei Shahoika	CPPclang++18.1.3	Success	6,536
May 17, 2026 17:25	Aleksei Shahoika	CPPclang++18.1.3	Success	6,215
May 17, 2026 17:12	Aleksei Shahoika	CPPclang++18.1.3	Success	5,559+54.90 RP
May 17, 2026 16:57	Aleksei Shahoika	CPPclang++18.1.3	Success	5,734+9.68 RP
May 17, 2026 16:20	Aleksei Shahoika	CPPg++10.5.0	Success	6,337
May 17, 2026 15:24	Aleksei Shahoika	CPPclang++18.1.3	Success	6,228
May 17, 2026 15:15	Aleksei Shahoika	CPPg++10.5.0	Error
May 17, 2026 15:05	M-Rochat	CPPclang++20.1.2	Success	4,571
May 17, 2026 15:03	Aleksei Shahoika	CPPclang++18.1.3	Success	6,153
May 17, 2026 15:01	M-Rochat	CPPclang++18.1.3	Success	4,567+0.48 RP
May 17, 2026 14:58	M-Rochat	CPPg++13.2.0	Success	5,270
May 17, 2026 14:57	M-Rochat	CPPclang++20.1.2	Success	4,568+2.39 RP
May 17, 2026 14:56	M-Rochat	CPPclang++18.1.3	Success	4,573+143.43 RP
May 17, 2026 14:06	Aleksei Shahoika	CPPclang++18.1.3	Success	5,935
May 17, 2026 13:49	Aleksei Shahoika	CPPclang++18.1.3	Success	5,794
May 17, 2026 13:43	Aleksei Shahoika	CPPclang++18.1.3	Success	5,768
May 17, 2026 13:31	Aleksei Shahoika	CPPclang++18.1.3	Success	5,824
May 17, 2026 13:17	Aleksei Shahoika	CPPclang++18.1.3	Success	5,766+246.65 RP
May 17, 2026 13:05	Aleksei Shahoika	CPPclang++18.1.3	Success	8,259
May 17, 2026 12:45	Aleksei Shahoika	CPPg++10.5.0	Success	8,230
May 17, 2026 12:20	Aleksei Shahoika	CPPclang++18.1.3	Success	6,722+181.66 RP
May 17, 2026 12:15	M-Rochat	CPPg++13.2.0	Success	5,417
May 17, 2026 12:13	Aleksei Shahoika	CPPclang++18.1.3	Success	7,657+96.66 RP
May 17, 2026 11:33	Aleksei Shahoika	CPPg++10.5.0	Success	8,269+534.21 RP
May 17, 2026 11:26	Aleksei Shahoika	CPPg++10.5.0	Error
May 17, 2026 11:12	Aleksei Shahoika	CPPclang++18.1.3	Success	14,812+680.13 RP
May 17, 2026 11:11	M-Rochat	CPPclang++18.1.3	Success	4,899
May 17, 2026 11:11	M-Rochat	CPPclang++18.1.3	Success	4,897
May 17, 2026 11:11	M-Rochat	CPPclang++18.1.3	Success	4,898
May 17, 2026 11:02	Aleksei Shahoika	CPPclang++18.1.3	Error
May 17, 2026 11:01	M-Rochat	CPPclang++18.1.3	Success	4,894+12.86 RP
May 17, 2026 11:01	M-Rochat	CPPclang++19.1.1	Success	4,897
May 17, 2026 11:01	M-Rochat	CPPg++14.2.0	Success	5,419
May 17, 2026 10:57	M-Rochat	CPPclang++20.1.2	Success	4,929
May 17, 2026 10:52	M-Rochat	CPPclang++20.1.2	Success	4,925+0.41 RP
May 17, 2026 10:49	M-Rochat	CPPclang++20.1.2	Success	4,927+6.16 RP
May 17, 2026 10:49	M-Rochat	CPPclang++20.1.2	Success	4,926+0.41 RP
May 17, 2026 10:42	M-Rochat	CPPclang++20.1.2	Success	4,942+2.05 RP
May 17, 2026 10:41	M-Rochat	CPPclang++20.1.2	Success	7,602
May 17, 2026 10:34	M-Rochat	CPPclang++20.1.2	Success	4,947+159.92 RP
May 17, 2026 10:34	M-Rochat	CPPclang++20.1.2	Success	8,960
May 17, 2026 10:34	M-Rochat	CPPclang++20.1.2	Success	8,383
May 17, 2026 09:06	M-Rochat	CPPclang++20.1.2	Success	5,456
May 17, 2026 09:04	M-Rochat	CPPclang++20.1.2	Success	5,384+5.00 RP
May 17, 2026 09:04	M-Rochat	CPPclang++20.1.2	Success	5,377
May 16, 2026 23:40	M-Rochat	CPPg++14.2.0	Success	6,149
May 16, 2026 23:40	M-Rochat	CPPclang++20.1.2	Success	5,372+131.40 RP
May 16, 2026 23:40	M-Rochat	CPPg++13.3.0	Success	5,794

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