Parse integers

Compute the sum of integers read from STDIN as fast as possible.

Input: 50 000 000 lines, each containing one integer in the range [0; 2147483647].

Output: The uint64 sum of all numbers, printed as a decimal string.

Note: Integer overflow is expected – use a 64-bit accumulator.

Restrictions:30s512Mb 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
Jul 7, 2026 14:15	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 13:50	Kevin Heavey	RUSTrust-1.95.0	Error	+266.77 RP
Jul 7, 2026 12:54	Kevin Heavey	RUSTrust-1.95.0	Success	8,260
Jul 7, 2026 12:44	Kevin Heavey	RUSTrust-1.95.0	Success	5,696
Jul 7, 2026 12:33	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 12:16	Victor Mercklé	RUSTrust-1.95.0	Error	+0.59 RP
Jul 7, 2026 11:53	Kevin Heavey	RUSTrust-1.95.0	Success	4,414+113.48 RP
Jul 7, 2026 11:41	Kevin Heavey	RUSTrust-1.95.0	Success	4,638
Jul 7, 2026 11:14	0xGlake	RUSTrust-1.95.0	Success	87,556+114.21 RP
Jul 7, 2026 11:07	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 10:54	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 10:54	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 10:51	Adam Folwarczny	CPPg++14.2.0	Error	+29.83 RP
Jul 7, 2026 10:44	Kevin Heavey	RUSTrust-1.95.0	Success	5,640
Jul 7, 2026 10:24	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 10:24	Kevin Heavey	RUSTrust-1.95.0	Success	8,190
Jul 7, 2026 10:22	Victor Mercklé	RUSTrust-1.95.0	Success	4,505+21.95 RP
Jul 7, 2026 10:16	Victor Mercklé	GOgo1.26.2	Error
Jul 7, 2026 09:54	Kevin Heavey	RUSTrust-1.95.0	Success	7,954
Jul 7, 2026 09:48	Victor Mercklé	CPPg++14.2.0	Success	5,490
Jul 7, 2026 09:16	Victor Mercklé	CPPg++14.2.0	Success	11,860
Jul 7, 2026 09:02	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 09:02	Kevin Heavey	RUSTrust-1.95.0	Success	6,843
Jul 7, 2026 09:01	Kevin Heavey	RUSTrust-1.95.0	Success	7,706
Jul 7, 2026 08:50	Teow Hua Jun	CPPg++14.2.0	Success	11,654
Jul 7, 2026 08:39	Teow Hua Jun	CPPg++14.2.0	Success	11,799
Jul 7, 2026 08:32	Victor Mercklé	CPPg++14.2.0	Success	102,116
Jul 7, 2026 07:43	Kevin Heavey	RUSTrust-1.95.0	Error
Jul 7, 2026 07:35	Kevin Heavey	RUSTrust-1.95.0	Success	24,071
Jul 7, 2026 05:57	Victor Mercklé	CSHARP10.0.7	Error
Jul 7, 2026 05:47	Victor Mercklé	CPPg++14.2.0	Error	+21.31 RP
Jul 7, 2026 05:42	Victor Mercklé	GOgo1.26.2	Success	4,737+63.96 RP
Jul 7, 2026 05:37	Victor Mercklé	ZIG0.16.0	Success	4,476+45.95 RP
Jul 7, 2026 05:28	wn	CPPg++14.2.0	Success	3,294+18.38 RP
Jul 7, 2026 05:26	wn	CPPg++14.2.0	Success	3,309
Jul 7, 2026 05:25	Victor Mercklé	CPPg++14.2.0	Success	45,956
Jul 7, 2026 05:16	Victor Mercklé	CPPg++14.2.0	Success	4,128+14.58 RP
Jul 7, 2026 05:04	Victor Mercklé	CPPg++14.2.0	Success	34,009
Jul 7, 2026 04:54	wn	CPPg++14.2.0	Success	3,457
Jul 7, 2026 04:47	Victor Mercklé	CPPg++14.2.0	Success	5,591
Jul 7, 2026 04:41	wn	CPPg++13.3.0	Success	3,443
Jul 7, 2026 04:28	wn	CPPg++14.2.0	Success	3,381
Jul 7, 2026 04:25	wn	CPPg++14.2.0	Success	3,319
Jul 7, 2026 04:23	wn	CPPg++14.2.0	Success	3,547
Jul 7, 2026 04:21	Victor Mercklé	CPPg++14.2.0	Success	5,588
Jul 7, 2026 04:21	wn	CPPg++14.2.0	Success	3,442
Jul 7, 2026 04:16	wn	CPPg++14.2.0	Success	3,410
Jul 7, 2026 04:12	Victor Mercklé	CPPg++14.2.0	Success	8,148
Jul 7, 2026 04:05	wn	CPPg++14.2.0	Success	3,304+30.08 RP
Jul 7, 2026 04:04	wn	CPPg++14.2.0	Success	3,433
Jul 7, 2026 04:03	wn	CPPg++13.3.0	Success	3,333
Jul 7, 2026 04:03	wn	CPPg++14.2.0	Success	3,321+9.04 RP
Jul 7, 2026 04:02	wn	CPPg++14.2.0	Success	3,331+4.50 RP
Jul 7, 2026 04:00	wn	CPPg++14.2.0	Success	3,336+663.33 RP
Jul 7, 2026 03:53	Victor Mercklé	CPPg++14.2.0	Success	4,746
Jul 7, 2026 03:49	wn	CPPg++14.2.0	Error	+211.29 RP
Jul 7, 2026 03:44	Victor Mercklé	CPPg++14.2.0	Success	4,740
Jul 7, 2026 03:40	wn	CPPg++14.2.0	Error
Jul 7, 2026 03:39	wn	CPPg++14.2.0	Error
Jul 7, 2026 03:38	wn	CPPg++14.2.0	Error
Jul 7, 2026 03:36	wn	CPPg++14.2.0	Error	+17.44 RP
Jul 7, 2026 03:35	wn	CPPg++14.2.0	Error	+316.98 RP
Jul 7, 2026 03:32	wn	CPPg++14.2.0	Error	+52.35 RP
Jul 7, 2026 03:31	wn	CPPg++13.3.0	Error	+317.55 RP
Jul 7, 2026 03:30	Victor Mercklé	CPPg++14.2.0	Success	5,976
Jul 6, 2026 23:47	Victor Mercklé	CPPg++14.2.0	Success	4,781
Jul 6, 2026 23:38	Victor Mercklé	CPPg++14.2.0	Success	28,929
Jul 6, 2026 23:27	Victor Mercklé	CPPg++14.2.0	Success	4,801
Jul 6, 2026 23:13	Victor Mercklé	CPPg++14.2.0	Success	4,896
Jul 6, 2026 23:07	Victor Mercklé	CPPg++14.2.0	Success	4,794
Jul 6, 2026 22:38	boop34	CPPg++10.5.0	Success	535,703
Jul 6, 2026 22:35	boop34	CPPg++10.5.0	Error
Jul 6, 2026 22:26	Victor Mercklé	CPPg++14.2.0	Success	6,657
Jul 6, 2026 22:25	boop34	CPPg++10.5.0	Error
Jul 6, 2026 22:14	Victor Mercklé	CPPg++14.2.0	Success	5,388
Jul 6, 2026 22:08	boop34	CPPg++10.5.0	Success	77,686+16.38 RP
Jul 6, 2026 22:06	Joshua Montross	CPPclang++18.1.3	Success	21,172
Jul 6, 2026 22:04	Victor Mercklé	CPPg++14.2.0	Success	6,796
Jul 6, 2026 21:59	boop34	CPPg++10.5.0	Success	89,009+0.11 RP
Jul 6, 2026 21:53	Victor Mercklé	CPPg++14.2.0	Success	28,480
Jul 6, 2026 21:30	Victor Mercklé	CPPg++14.2.0	Success	5,575
Jul 6, 2026 21:26	Joshua Montross	CPPclang++18.1.3	Success	21,124+36.50 RP
Jul 6, 2026 21:25	Victor Mercklé	CPPg++14.2.0	Success	5,620
Jul 6, 2026 21:09	Victor Mercklé	CPPg++14.2.0	Success	26,399
Jul 6, 2026 21:01	Victor Mercklé	CPPg++14.2.0	Success	5,481
Jul 6, 2026 20:55	Kevin Heavey	RUSTrust-1.95.0	Success	15,921
Jul 6, 2026 20:04	Victor Mercklé	CPPg++14.2.0	Success	39,736
Jul 6, 2026 19:53	Victor Mercklé	CPPg++14.2.0	Success	98,546
Jul 6, 2026 19:42	Victor Mercklé	CPPg++14.2.0	Success	25,202
Jul 6, 2026 19:21	Victor Mercklé	CPPg++14.2.0	Success	5,280
Jul 6, 2026 19:18	Kevin Heavey	RUSTrust-1.95.0	Success	12,627
Jul 6, 2026 19:10	Teow Hua Jun	CPPg++14.2.0	Success	9,457+23.08 RP
Jul 6, 2026 18:11	Teow Hua Jun	CPPclang++20.1.2	Success	10,350
Jul 6, 2026 18:10	Kevin Heavey	RUSTrust-1.95.0	Success	4,948
Jul 6, 2026 17:39	Kevin Heavey	RUSTrust-1.95.0	Success	7,070
Jul 6, 2026 16:22	Victor Mercklé	CPPg++14.2.0	Error	+5.40 RP
Jul 6, 2026 15:50	Kevin Heavey	RUSTrust-1.95.0	Success	9,392
Jul 6, 2026 15:49	Victor Mercklé	CPPg++14.2.0	Error	+2.39 RP
Jul 6, 2026 14:52	Kevin Heavey	RUSTrust-1.95.0	Success	6,643
Jul 6, 2026 14:22	Kevin Heavey	RUSTrust-1.95.0	Success	6,438

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