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
Apr 28, 2026 12:55	Dominique Garmier	CPPclang++18.1.3	Success	7,362
Apr 28, 2026 12:53	Dominique Garmier	CPPclang++18.1.3	Success	8,245
Apr 28, 2026 12:19	Charles Cabergs	CPPg++13.3.0	Success	13,699
Apr 28, 2026 09:13	TudyM	CPPg++10.5.0	Success	34,615
Apr 28, 2026 09:11	TudyM	CPPg++10.5.0	Success	36,898
Apr 28, 2026 09:07	TudyM	CPPg++10.5.0	Success	34,631
Apr 28, 2026 09:04	TudyM	CPPg++10.5.0	Success	35,539
Apr 28, 2026 08:59	TudyM	CPPg++13.3.0	Success	38,856
Apr 28, 2026 08:57	TudyM	CPPg++10.5.0	Success	36,571
Apr 28, 2026 08:55	TudyM	CPPg++10.5.0	Success	35,880
Apr 28, 2026 08:52	TudyM	CPPclang++18.1.3	Success	37,676
Apr 28, 2026 06:19	Victor Mercklé	CPPg++14.2.0	Success	12,628+275.82 RP
Apr 28, 2026 04:42	Charles Cabergs	CPPg++13.3.0	Success	13,579
Apr 27, 2026 21:31	Victor Mercklé	CPPclang++20.1.2	Success	19,377+217.62 RP
Apr 27, 2026 18:50	Charles Cabergs	CPPg++13.3.0	Success	13,580
Apr 27, 2026 15:38	Victor Mercklé	CPPg++14.2.0	Error	+260.25 RP
Apr 27, 2026 15:30	Victor Mercklé	CPPg++14.2.0	Success	261,733+0.37 RP
Apr 27, 2026 15:27	Victor Mercklé	CPPg++14.2.0	Success	264,327+37.83 RP
Apr 27, 2026 15:22	Victor Mercklé	CPPg++14.2.0	Error
Apr 27, 2026 10:25	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:24	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:23	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:22	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:21	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:20	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:19	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:18	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:16	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:15	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:12	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:11	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:10	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:09	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:08	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:07	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:05	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:04	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:03	wn	CPPg++13.3.0	Error
Apr 27, 2026 10:01	wn	CPPg++13.3.0	Success	4,659
Apr 27, 2026 10:00	wn	CPPg++14.2.0	Error
Apr 27, 2026 09:59	wn	CPPg++13.3.0	Error
Apr 27, 2026 09:58	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:53	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:52	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:51	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:51	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:47	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:47	wn	CPPg++13.3.0	Error
Apr 27, 2026 07:35	olliecrow	RUSTrust-1.94.0	Success	6,289
Apr 27, 2026 07:28	olliecrow	RUSTrust-1.94.0	Error
Apr 27, 2026 07:02	olliecrow	RUSTrust-1.94.0	Error
Apr 27, 2026 06:48	GrangerJ17	CPPg++10.5.0	Success	89,282+112.00 RP
Apr 27, 2026 06:03	wn	CPPg++13.3.0	Error	+0.85 RP
Apr 27, 2026 05:57	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:56	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:55	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:54	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:53	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:52	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:51	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:50	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:49	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:48	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:47	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:46	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:45	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:42	wn	CPPg++14.2.0	Error
Apr 27, 2026 05:41	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:40	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:38	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:37	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:36	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:34	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:33	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:32	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:31	wn	CPPg++13.3.0	Error
Apr 27, 2026 05:27	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:58	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:54	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:52	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:51	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:49	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:48	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:47	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:45	wn	CPPg++13.3.0	Error
Apr 27, 2026 04:44	wn	CPPclang++18.1.3	Error
Apr 27, 2026 04:42	wn	CPPg++13.3.0	Error
Apr 27, 2026 02:48	wn	CPPg++10.5.0	Error
Apr 27, 2026 02:34	wn	CPPg++13.3.0	Error
Apr 27, 2026 02:33	wn	CPPg++13.3.0	Error
Apr 27, 2026 02:32	wn	CPPg++13.3.0	Error
Apr 27, 2026 02:31	wn	CPPg++13.3.0	Error
Apr 27, 2026 02:30	wn	CPPg++14.2.0	Error
Apr 27, 2026 00:28	olliecrow	CSHARP9.0.15	Success	9,430
Apr 26, 2026 21:36	zielaj	CPPclang++18.1.3	Error
Apr 26, 2026 21:35	zielaj	CPPclang++18.1.3	Error
Apr 26, 2026 21:34	zielaj	CPPg++10.5.0	Error
Apr 26, 2026 19:13	olliecrow	CSHARP9.0.15	Success	8,705
Apr 26, 2026 18:50	olliecrow	CSHARP9.0.15	Error
Apr 26, 2026 18:42	olliecrow	CSHARP9.0.15	Error

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