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
Nov 4, 2026 16:50	Aleksey Shvets	RUSTrust-1.99.1	Success	13,774+359.87 RP
Nov 4, 2026 16:25	Aleksey Shvets	RUSTrust-1.95.0	Success	27,312+12.98 RP
Nov 4, 2026 16:17	Aleksey Shvets	RUSTrust-1.95.0	Success	28,316+74.19 RP
Nov 4, 2026 15:43	Aleksey Shvets	RUSTrust-1.95.0	Success	35,846+143.39 RP
Nov 4, 2026 14:14	Aleksey Shvets	RUSTrust-1.95.0	Success	73,758+1.16 RP
Nov 4, 2026 14:09	Aleksey Shvets	RUSTrust-1.95.0	Success	74,392+66.46 RP
Nov 1, 2026 23:45	Aleksey Shvets	RUSTrust-1.99.1	Success	147,148+67.96 RP
Oct 19, 2026 07:51	highload-churner	CPPclang++18.1.3	Success	1,643
Oct 19, 2026 07:41	highload-churner	CPPg++14.2.0	Success	1,576
Oct 19, 2026 07:37	highload-churner	CPPg++14.2.0	Success	1,582
Oct 19, 2026 07:33	highload-churner	CPPg++14.2.0	Success	1,574
Oct 19, 2026 07:30	highload-churner	CPPg++14.2.0	Success	1,574+28.18 RP
Oct 19, 2026 07:25	highload-churner	CPPg++14.2.0	Success	1,581
Oct 19, 2026 07:23	highload-churner	CPPg++14.2.0	Success	1,645
Oct 19, 2026 07:19	highload-churner	CPPg++14.2.0	Success	1,581
Oct 19, 2026 07:08	highload-churner	CPPg++14.2.0	Success	1,579+19.99 RP
Oct 19, 2026 07:04	highload-churner	CPPg++14.2.0	Success	1,584+159.29 RP
Oct 19, 2026 06:46	highload-churner	CPPg++14.2.0	Success	2,995
Oct 19, 2026 04:09	zayd-ansari-code	CPPg++10.5.0	Success	76,949+129.96 RP
Oct 17, 2026 09:52	Kacpxer	CPPg++10.5.0	Success	20,242+494.02 RP
Oct 17, 2026 07:50	janwww	RUSTrust-1.95.0	Success	2,057
Oct 17, 2026 01:54	highload-churner	CPPg++14.2.0	Success	1,640
Oct 16, 2026 13:53	highload-churner	CPPg++14.2.0	Success	1,636
Oct 16, 2026 10:30	highload-churner	CPPg++14.2.0	Success	1,633
Oct 16, 2026 10:30	highload-churner	CPPclang++18.1.3	Success	1,633
Oct 16, 2026 09:28	highload-churner	CPPg++14.2.0	Success	1,633
Oct 16, 2026 08:16	highload-churner	CPPg++14.2.0	Success	1,630
Oct 16, 2026 07:00	highload-churner	CPPg++14.2.0	Success	1,630
Oct 16, 2026 06:19	highload-churner	CPPg++14.2.0	Success	1,632
Oct 16, 2026 06:19	highload-churner	CPPg++14.2.0	Success	1,652
Oct 16, 2026 05:07	highload-churner	CPPg++14.2.0	Success	1,634
Oct 16, 2026 05:05	highload-churner	CPPg++14.2.0	Success	1,758
Oct 16, 2026 04:53	highload-churner	CPPg++14.2.0	Success	1,625+268.03 RP
Oct 14, 2026 00:15	highload-churner	CPPg++14.2.0	Success	18,841
Oct 14, 2026 00:08	highload-churner	CPPg++14.2.0	Success	13,434
Oct 13, 2026 20:11	Karthik Reddy	CPPg++13.3.0	Success	1,583
Oct 13, 2026 00:55	highload-churner	CPPg++14.2.0	Error
Oct 13, 2026 00:54	highload-churner	CPPg++14.2.0	Error
Oct 13, 2026 00:48	highload-churner	CPPg++14.2.0	Error
Oct 13, 2026 00:45	highload-churner	CPPg++14.2.0	Error
Oct 13, 2026 00:36	highload-churner	CPPg++14.2.0	Error
Oct 13, 2026 00:29	highload-churner	CPPg++14.2.0	Success	1,712
Oct 12, 2026 17:02	highload-churner	CPPg++14.2.0	Success	1,749
Oct 12, 2026 16:56	highload-churner	CPPg++14.2.0	Success	3,112
Oct 12, 2026 16:49	highload-churner	CPPg++14.2.0	Success	3,160
Oct 12, 2026 16:41	highload-churner	CPPg++14.2.0	Success	1,699+1'365.02 RP
Oct 12, 2026 15:52	highload-churner	CPPg++14.2.0	Error
Oct 12, 2026 15:48	highload-churner	CPPg++14.2.0	Success	6,278
Oct 10, 2026 00:36	highload-churner	CPPg++14.2.0	Success	2,710
Oct 10, 2026 00:33	highload-churner	CPPg++14.2.0	Success	2,212+48.52 RP
Oct 10, 2026 00:12	highload-churner	CPPg++14.2.0	Success	2,236+4.00 RP
Oct 9, 2026 23:44	highload-churner	CPPg++13.3.0	Success	2,238+216.57 RP
Oct 9, 2026 23:27	highload-churner	CPPg++14.2.0	Success	55,588
Oct 9, 2026 23:00	highload-churner	CPPg++14.2.0	Success	2,899
Oct 9, 2026 22:59	highload-churner	CPPg++13.3.0	Success	2,660
Oct 9, 2026 22:58	highload-churner	CPPg++14.2.0	Success	2,399
Oct 9, 2026 22:58	highload-churner	CPPg++14.2.0	Success	2,384
Oct 9, 2026 22:45	highload-churner	CPPg++14.2.0	Success	2,543
Oct 9, 2026 22:45	highload-churner	CPPg++14.2.0	Success	2,585
Oct 9, 2026 22:19	highload-churner	CPPg++14.2.0	Success	2,535
Oct 9, 2026 22:18	highload-churner	CPPg++14.2.0	Success	2,564
Oct 9, 2026 22:18	highload-churner	CPPg++14.2.0	Success	2,831
Oct 9, 2026 22:07	highload-churner	CPPg++14.2.0	Success	2,956
Oct 9, 2026 22:06	highload-churner	CPPg++14.2.0	Success	2,950
Oct 9, 2026 22:06	highload-churner	CPPg++14.2.0	Success	2,435
Oct 9, 2026 22:06	highload-churner	CPPg++14.2.0	Success	2,440
Oct 9, 2026 22:05	highload-churner	CPPg++14.2.0	Success	2,443
Oct 9, 2026 22:05	highload-churner	CPPg++14.2.0	Success	2,352+662.33 RP
Oct 9, 2026 21:51	highload-churner	CPPg++14.2.0	Success	2,976
Oct 9, 2026 21:46	highload-churner	CPPg++14.2.0	Success	2,924
Oct 9, 2026 21:45	highload-churner	CPPg++13.3.0	Success	2,853
Oct 9, 2026 21:45	highload-churner	CPPg++14.2.0	Success	2,920
Oct 9, 2026 21:45	highload-churner	CPPg++14.2.0	Success	2,786+186.86 RP
Oct 9, 2026 21:23	highload-churner	CPPg++14.2.0	Success	2,939+13.84 RP
Oct 9, 2026 21:18	highload-churner	CPPg++14.2.0	Success	3,200
Oct 9, 2026 21:17	highload-churner	CPPg++14.2.0	Success	2,998
Oct 9, 2026 21:15	highload-churner	CPPg++14.2.0	Success	2,951+394.67 RP
Oct 9, 2026 20:27	highload-churner	CPPg++13.3.0	Success	4,021
Oct 9, 2026 20:24	highload-churner	CPPg++14.2.0	Success	3,665
Oct 9, 2026 20:24	highload-churner	CPPg++14.2.0	Success	3,508
Oct 9, 2026 16:07	Karthik Reddy	CSHARP9.0.18	Success	1,604+369.31 RP
Oct 9, 2026 14:39	Karthik Reddy	CSHARP9.0.18	Success	1,781
Oct 9, 2026 12:17	highload-churner	CPPg++13.3.0	Success	3,529
Oct 9, 2026 12:03	highload-churner	CPPg++14.2.0	Success	3,340+188.96 RP
Oct 9, 2026 11:56	highload-churner	CPPg++14.2.0	Success	3,565+58.55 RP
Oct 9, 2026 11:44	highload-churner	CPPg++14.2.0	Success	3,641+72.70 RP
Oct 9, 2026 11:43	highload-churner	CPPg++14.2.0	Success	3,740+64.87 RP
Oct 9, 2026 11:42	highload-churner	CPPg++14.2.0	Success	3,833+2'608.92 RP
Oct 9, 2026 10:44	Karthik Reddy	ZIG0.15.1	Success	1,584+51.39 RP
Oct 9, 2026 09:00	Karthik Reddy	ZIG0.15.1	Success	1,740
Oct 9, 2026 08:59	Karthik Reddy	RUSTrust-1.95.0	Success	1,582+275.16 RP
Oct 9, 2026 08:45	janwww	CPPg++14.2.0	Success	2,053+4'742.07 RP
Oct 9, 2026 08:16	Karthik Reddy	GOgo1.26.2	Success	1,683
Oct 9, 2026 08:07	Karthik Reddy	ZIG0.15.1	Success	1,742
Oct 9, 2026 07:16	Karthik Reddy	RUSTrust-1.95.0	Success	1,772
Oct 8, 2026 18:40	Karthik Reddy	CPPg++13.3.0	Error
Oct 8, 2026 18:39	Karthik Reddy	CPPg++13.3.0	Error
Oct 8, 2026 18:37	Karthik Reddy	CPPg++13.3.0	Error
Oct 8, 2026 18:36	Karthik Reddy	CPPg++13.3.0	Error
Oct 8, 2026 18:25	Karthik Reddy	CPPg++13.3.0	Success	1,621

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