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
Feb 22, 2026 01:48	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 01:45	olliecrow	CPPclang++18.1.3	Error
Feb 22, 2026 01:42	olliecrow	CPPclang++18.1.3	Error
Jan 2, 2026 17:40	Yehor Bondar	CPPclang++18.1.3	Success	14,266+586.37 RP
Jan 2, 2026 16:31	Yehor Bondar	GOgo1.25.5	Success	87,735
Dec 31, 2025 18:57	Keefe	CPPg++13.3.0	Error
Dec 31, 2025 17:40	Aniruddha Deb	CPPg++13.3.0	Success	4,042
Dec 31, 2025 17:21	Aniruddha Deb	CPPg++13.3.0	Error
Dec 31, 2025 17:13	Aniruddha Deb	CPPg++13.3.0	Success	10,030
Dec 31, 2025 17:08	Aniruddha Deb	CPPg++13.3.0	Success	4,198
Dec 31, 2025 17:03	Aniruddha Deb	CPPclang++18.1.3	Success	6,479
Dec 31, 2025 12:10	Aniruddha Deb	CPPg++13.3.0	Success	4,080
Dec 31, 2025 12:08	Aniruddha Deb	CPPg++13.3.0	Error
Dec 30, 2025 17:38	Yehor Bondar	GOgo1.25.5	Success	87,264+19.38 RP
Dec 30, 2025 17:18	Yehor Bondar	GOgo1.25.5	Error
Dec 30, 2025 17:13	Yehor Bondar	GOgo1.25.5	Error
Dec 30, 2025 02:26	Josu San Martin	RUSTrust-1.92.0	Success	7,087
Dec 30, 2025 02:20	Josu San Martin	RUSTrust-1.92.0	Success	10,532
Dec 30, 2025 02:19	Josu San Martin	RUSTrust-1.92.0	Success	11,213
Dec 30, 2025 02:04	Josu San Martin	RUSTrust-1.92.0	Success	7,252
Dec 30, 2025 02:02	Josu San Martin	RUSTrust-1.92.0	Success	6,687+1'881.41 RP
Dec 30, 2025 01:41	Josu San Martin	RUSTrust-1.92.0	Error
Dec 30, 2025 01:33	Josu San Martin	RUSTrust-1.92.0	Error
Dec 30, 2025 01:32	Josu San Martin	RUSTrust-1.92.0	Error
Dec 30, 2025 01:06	Josu San Martin	RUSTrust-1.92.0	Success	24,991+147.82 RP
Dec 30, 2025 01:06	Josu San Martin	RUSTrust-1.92.0	Success	39,631+252.33 RP
Dec 29, 2025 15:53	Josu San Martin	RUSTrust-1.92.0	Error
Dec 29, 2025 15:51	Josu San Martin	RUSTrust-1.92.0	Error
Dec 29, 2025 15:49	Josu San Martin	RUSTrust-1.92.0	Error
Dec 22, 2025 22:20	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 22:19	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 22:15	JulesPrieux	RUSTrust-1.92.0	Success	29,824+229.99 RP
Dec 22, 2025 22:10	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 22:09	JulesPrieux	RUSTrust-1.92.0	Success	99,000
Dec 22, 2025 21:59	JulesPrieux	RUSTrust-1.92.0	Success	94,954+96.69 RP
Dec 22, 2025 21:50	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 21:46	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 21:44	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 21:40	JulesPrieux	RUSTrust-1.92.0	Error
Dec 22, 2025 21:13	JulesPrieux	GOgo1.25.5	Success	1,160,029+8.62 RP
Dec 5, 2025 02:56	Yehor Bondar	GOgo1.25.5	Success	105,029+95.21 RP
Nov 19, 2025 18:09	Yuriy Lyfenko	CPPg++13.3.0	Success	3,012
Nov 19, 2025 18:08	Yuriy Lyfenko	CPPg++13.3.0	Success	3,005
Nov 16, 2025 00:20	Aniruddha Deb	CPPg++13.3.0	Success	4,033+595.24 RP
Nov 16, 2025 00:09	Aniruddha Deb	CPPg++13.3.0	Success	5,661
Nov 16, 2025 00:07	Aniruddha Deb	CPPg++13.3.0	Success	5,528
Nov 16, 2025 00:01	Aniruddha Deb	CPPg++13.3.0	Success	5,307+1.06 RP
Nov 16, 2025 00:00	Aniruddha Deb	CPPg++13.3.0	Success	5,628
Nov 15, 2025 23:50	Aniruddha Deb	CPPg++13.3.0	Success	8,317
Nov 15, 2025 23:48	Aniruddha Deb	CPPg++13.3.0	Success	5,669
Nov 15, 2025 23:46	Aniruddha Deb	CPPg++13.3.0	Success	5,669
Nov 15, 2025 23:46	Aniruddha Deb	CPPg++13.3.0	Success	5,690
Nov 15, 2025 23:44	Aniruddha Deb	CPPg++13.3.0	Success	5,754
Nov 15, 2025 23:44	Aniruddha Deb	CPPg++13.3.0	Success	5,467
Nov 15, 2025 23:36	Aniruddha Deb	CPPg++13.3.0	Success	5,310+14.78 RP
Nov 15, 2025 23:33	Aniruddha Deb	CPPg++13.3.0	Success	5,352+118.99 RP
Nov 15, 2025 23:29	Aniruddha Deb	CPPclang++18.1.3	Success	7,975
Nov 14, 2025 14:11	izotoff	GOgo1.24.4	Success	101,719
Nov 14, 2025 14:09	izotoff	GOgo1.24.4	Success	101,489
Nov 14, 2025 14:08	izotoff	GOgo1.18	Success	450,289
Nov 14, 2025 14:08	izotoff	GOgo1.11	Success	495,871
Nov 14, 2025 13:16	izotoff	GOgo1.25.4	Success	100,022+99.98 RP
Nov 9, 2025 00:32	Aniruddha Deb	CPPg++13.3.0	Success	5,752
Nov 9, 2025 00:32	Aniruddha Deb	CPPg++13.3.0	Success	5,716+14.57 RP
Nov 9, 2025 00:30	Aniruddha Deb	CPPg++13.3.0	Success	5,764+69.63 RP
Nov 9, 2025 00:30	Aniruddha Deb	CPPg++13.3.0	Success	6,005+49.25 RP
Nov 9, 2025 00:27	Aniruddha Deb	CPPg++13.3.0	Error
Nov 9, 2025 00:26	Aniruddha Deb	CPPg++13.3.0	Error
Nov 9, 2025 00:24	Aniruddha Deb	CPPg++13.3.0	Error
Nov 9, 2025 00:24	Aniruddha Deb	CPPg++13.3.0	Error
Sep 23, 2025 06:50	Tejas G.	CPPg++13.3.0	Success	10,534
Sep 23, 2025 06:48	Tejas G.	CPPg++13.3.0	Success	10,833
Sep 23, 2025 06:46	Tejas G.	CPPg++13.3.0	Success	11,084
Sep 23, 2025 06:42	Tejas G.	CPPg++13.3.0	Success	10,245+1.14 RP
Sep 23, 2025 06:40	Tejas G.	CPPg++13.3.0	Error
Sep 23, 2025 06:35	Tejas G.	CPPg++13.3.0	Success	10,415
Sep 23, 2025 06:32	Tejas G.	CPPclang++18.1.3	Success	12,905
Sep 23, 2025 06:30	Tejas G.	CPPg++13.3.0	Success	10,257+129.71 RP
Sep 23, 2025 06:28	Tejas G.	CPPg++13.3.0	Success	12,220
Sep 23, 2025 06:28	Tejas G.	CPPclang++18.1.3	Success	12,256
Sep 23, 2025 06:27	Tejas G.	CPPg++13.3.0	Success	12,214
Sep 23, 2025 06:21	Tejas G.	CPPg++13.3.0	Success	11,831+3.84 RP
Sep 23, 2025 06:17	Tejas G.	CPPg++13.3.0	Success	16,320
Sep 23, 2025 06:15	Tejas G.	CPPg++13.3.0	Error
Sep 23, 2025 03:15	Tejas G.	CPPg++13.3.0	Success	13,321
Sep 23, 2025 03:12	Tejas G.	CPPg++13.3.0	Error
Sep 23, 2025 01:14	Tejas G.	GOgo1.25.1	Error
Sep 23, 2025 00:58	Tejas G.	CPPg++13.3.0	Success	12,104
Sep 23, 2025 00:56	Tejas G.	CPPg++13.3.0	Success	11,885+15.09 RP
Sep 23, 2025 00:53	Tejas G.	CPPg++13.3.0	Error
Sep 23, 2025 00:50	Tejas G.	CPPg++13.3.0	Success	12,102+0.07 RP
Sep 22, 2025 15:38	Tejas G.	CPPclang++18.1.3	Success	15,684
Sep 22, 2025 15:38	Tejas G.	CPPg++13.3.0	Success	12,111
Sep 22, 2025 15:37	Tejas G.	CPPg++13.3.0	Success	12,103+2.04 RP
Sep 22, 2025 15:29	Tejas G.	CPPg++13.3.0	Success	12,133+184.49 RP
Sep 22, 2025 15:28	Tejas G.	CPPclang++18.1.3	Success	15,716
Sep 22, 2025 15:27	Tejas G.	CPPclang++18.1.3	Success	15,748
Sep 22, 2025 15:25	Tejas G.	CPPclang++18.1.3	Success	15,694
Sep 22, 2025 15:17	Tejas G.	CPPclang++18.1.3	Success	15,669
Sep 22, 2025 15:04	Tejas G.	CPPclang++18.1.3	Success	15,888

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