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
Aug 29, 2026 17:10	Tomislav Tunkovic	CSHARP9.0.15	Error
Aug 29, 2026 17:06	Tomislav Tunkovic	CSHARP9.0.15	Error
Aug 29, 2026 17:03	Tomislav Tunkovic	CSHARP9.0.15	Error
Aug 29, 2026 16:59	Tomislav Tunkovic	CSHARP9.0.15	Error
Aug 29, 2026 16:53	Tomislav Tunkovic	GOgo1.26.2	Success	1,900+1'312.15 RP
Aug 29, 2026 16:49	Tomislav Tunkovic	ZIG0.15.1	Success	1,674+1'723.82 RP
Aug 29, 2026 16:47	Tomislav Tunkovic	RUSTrust-1.95.0	Success	1,717+1'572.41 RP
Aug 29, 2026 16:38	Tomislav Tunkovic	CPPg++14.2.0	Success	1,676
Aug 29, 2026 16:35	Tomislav Tunkovic	CPPg++13.3.0	Success	1,890
Aug 29, 2026 16:32	Tomislav Tunkovic	CPPg++13.3.0	Success	1,681
Aug 29, 2026 16:26	Tomislav Tunkovic	CPPg++13.3.0	Success	1,677
Aug 29, 2026 16:21	Tomislav Tunkovic	CPPg++13.3.0	Success	1,666
Aug 29, 2026 16:18	Tomislav Tunkovic	CPPg++13.3.0	Success	1,670
Aug 29, 2026 16:15	Tomislav Tunkovic	CPPg++13.3.0	Success	1,686
Aug 29, 2026 16:13	Tomislav Tunkovic	CPPg++13.3.0	Success	1,678
Aug 29, 2026 16:08	Tomislav Tunkovic	CPPg++13.3.0	Success	1,666+2'867.81 RP
Aug 29, 2026 01:56	Victor Mercklé	CPPg++14.2.0	Success	2,742
Aug 29, 2026 01:39	Victor Mercklé	CPPg++14.2.0	Success	2,143
Aug 29, 2026 01:36	Victor Mercklé	CPPg++14.2.0	Success	2,121
Aug 29, 2026 01:29	Victor Mercklé	CPPg++14.2.0	Success	2,128
Aug 29, 2026 01:23	Victor Mercklé	CPPg++14.2.0	Success	2,050+23.74 RP
Aug 29, 2026 01:12	Victor Mercklé	CPPg++14.2.0	Success	3,120
Aug 29, 2026 00:51	Victor Mercklé	CPPg++14.2.0	Success	2,821
Aug 29, 2026 00:28	Victor Mercklé	CPPg++14.2.0	Success	3,792
Aug 29, 2026 00:14	Victor Mercklé	CPPg++14.2.0	Success	2,490
Aug 28, 2026 23:53	Victor Mercklé	CPPg++14.2.0	Success	2,058
Aug 28, 2026 23:47	Victor Mercklé	CPPg++14.2.0	Success	2,055+14.18 RP
Aug 28, 2026 23:39	Victor Mercklé	CPPg++14.2.0	Success	2,112
Aug 28, 2026 23:32	Victor Mercklé	CPPg++14.2.0	Success	2,246
Aug 28, 2026 23:19	Victor Mercklé	CPPg++14.2.0	Success	2,058+28.26 RP
Aug 28, 2026 23:14	Victor Mercklé	CPPg++14.2.0	Success	2,124
Aug 28, 2026 23:02	Victor Mercklé	CPPg++14.2.0	Success	2,064+88.38 RP
Aug 28, 2026 22:59	Victor Mercklé	CPPg++14.2.0	Success	2,142
Aug 28, 2026 22:55	Victor Mercklé	CPPg++14.2.0	Success	2,246
Aug 28, 2026 22:51	Victor Mercklé	CPPg++14.2.0	Success	2,083+176.46 RP
Aug 28, 2026 21:51	Victor Mercklé	CPPg++14.2.0	Success	2,607
Aug 28, 2026 20:56	Victor Mercklé	CPPg++14.2.0	Success	2,122+325.88 RP
Aug 28, 2026 20:46	Victor Mercklé	CPPg++14.2.0	Success	2,198+202.38 RP
Aug 28, 2026 20:20	Victor Mercklé	CPPg++14.2.0	Success	2,266
Aug 28, 2026 20:10	Victor Mercklé	CPPg++14.2.0	Success	2,992
Aug 28, 2026 19:56	Victor Mercklé	CPPg++14.2.0	Success	2,346
Aug 28, 2026 19:46	Victor Mercklé	CPPg++14.2.0	Success	2,304
Aug 28, 2026 19:42	Victor Mercklé	CPPg++14.2.0	Success	2,806
Aug 28, 2026 19:35	Victor Mercklé	CPPg++14.2.0	Success	2,248+11.86 RP
Aug 28, 2026 19:28	Victor Mercklé	CPPg++14.2.0	Success	4,139
Aug 28, 2026 19:21	Victor Mercklé	CPPg++14.2.0	Success	8,030
Aug 28, 2026 19:11	Victor Mercklé	CPPg++14.2.0	Success	2,251+136.04 RP
Aug 28, 2026 19:00	Victor Mercklé	CPPg++14.2.0	Success	2,394
Aug 28, 2026 18:54	Victor Mercklé	CPPg++14.2.0	Success	9,592
Aug 28, 2026 18:47	Victor Mercklé	CPPg++14.2.0	Success	2,521
Aug 28, 2026 18:37	Victor Mercklé	CPPg++14.2.0	Success	7,834
Aug 28, 2026 18:24	Victor Mercklé	CPPg++14.2.0	Success	2,351
Aug 28, 2026 18:20	Victor Mercklé	CPPg++14.2.0	Success	2,357
Aug 28, 2026 18:13	Victor Mercklé	CPPg++14.2.0	Success	5,358
Aug 28, 2026 17:49	Victor Mercklé	CPPg++14.2.0	Success	2,287
Aug 28, 2026 17:45	Victor Mercklé	CPPg++14.2.0	Success	2,491
Aug 28, 2026 17:41	Victor Mercklé	CPPg++14.2.0	Success	2,294
Aug 28, 2026 17:36	Victor Mercklé	CPPg++14.2.0	Success	2,366
Aug 28, 2026 17:30	Victor Mercklé	CPPg++14.2.0	Success	3,641
Aug 28, 2026 17:20	Victor Mercklé	CPPg++14.2.0	Success	2,286+41.90 RP
Aug 28, 2026 17:15	Victor Mercklé	CPPg++14.2.0	Success	2,365
Aug 28, 2026 17:08	Victor Mercklé	CPPg++14.2.0	Success	2,369
Aug 28, 2026 16:56	Victor Mercklé	CPPg++14.2.0	Success	2,297+260.46 RP
Aug 28, 2026 16:51	Victor Mercklé	CPPg++14.2.0	Success	2,530
Aug 28, 2026 16:42	Victor Mercklé	CPPg++14.2.0	Success	2,461
Aug 28, 2026 16:24	Victor Mercklé	CPPg++14.2.0	Success	2,581
Aug 23, 2026 22:07	Andrew Epstein	CPPg++14.2.0	Success	6,180+431.46 RP
Aug 23, 2026 15:39	Andrew Epstein	CPPg++14.2.0	Success	8,427+1'186.66 RP
Aug 19, 2026 12:02	marko1597	CPPclang++16.0.6	Success	2,470
Aug 19, 2026 12:01	marko1597	CPPclang++15.0.7	Success	2,594
Aug 19, 2026 12:01	marko1597	CPPclang++20.1.2	Success	2,467
Aug 19, 2026 12:01	marko1597	CPPclang++17.0.6	Success	2,444
Aug 19, 2026 12:01	marko1597	CPPclang++19.1.1	Success	2,446
Aug 19, 2026 10:47	marko1597	CPPg++14.2.0	Error
Aug 17, 2026 19:02	Tomislav Tunkovic	CSHARP9.0.15	Error
Aug 17, 2026 12:31	Tomislav Tunkovic	ZIG0.15.1	Success	2,353+64.04 RP
Aug 17, 2026 12:26	Tomislav Tunkovic	RUSTrust-1.95.0	Success	2,352+64.10 RP
Aug 17, 2026 11:54	Tomislav Tunkovic	CSHARP9.0.15	Success	2,638+118.33 RP
Aug 17, 2026 11:51	Tomislav Tunkovic	GOgo1.26.2	Success	2,531+259.61 RP
Aug 17, 2026 11:18	marko1597	CPPclang++19.1.1	Success	2,430+26.92 RP
Aug 17, 2026 11:18	marko1597	CPPclang++19.1.1	Success	2,461
Aug 17, 2026 11:05	marko1597	CPPclang++18.1.3	Success	2,756
Aug 17, 2026 11:05	marko1597	CPPclang++19.1.1	Success	2,765
Aug 17, 2026 10:57	marko1597	CPPclang++18.1.3	Success	2,902
Aug 17, 2026 10:57	marko1597	CPPclang++19.1.1	Success	2,861
Aug 17, 2026 10:37	marko1597	CPPclang++19.1.1	Success	3,672
Aug 17, 2026 10:37	marko1597	CPPclang++19.1.1	Success	3,389
Aug 17, 2026 10:37	marko1597	CPPclang++19.1.1	Success	3,418
Aug 17, 2026 10:33	marko1597	CPPclang++18.1.3	Success	2,457
Aug 17, 2026 10:33	marko1597	CPPclang++16.0.6	Success	2,480
Aug 17, 2026 10:21	marko1597	CPPclang++20.1.2	Success	2,586
Aug 17, 2026 10:21	marko1597	CPPclang++19.1.1	Success	2,794
Aug 17, 2026 10:21	marko1597	CPPclang++19.1.1	Success	2,446+854.15 RP
Aug 17, 2026 10:11	marko1597	CPPg++14.2.0	Success	3,128
Aug 17, 2026 10:11	marko1597	CPPclang++20.1.2	Success	3,097
Aug 17, 2026 10:11	marko1597	CPPclang++19.1.1	Success	3,092+716.53 RP
Aug 17, 2026 09:55	marko1597	CPPclang++20.1.2	Error
Aug 17, 2026 09:55	marko1597	CPPclang++20.1.2	Error
Aug 17, 2026 09:52	marko1597	CPPclang++16.0.6	Success	4,014
Aug 17, 2026 09:52	marko1597	CPPclang++17.0.6	Success	4,035

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