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
Aug 11, 2026 20:54	Victor Mercklé	CPPg++14.2.0	Success	11,000
Aug 11, 2026 20:49	Victor Mercklé	CPPg++14.2.0	Success	11,010
Aug 11, 2026 20:44	Victor Mercklé	CPPg++14.2.0	Success	5,295
Aug 11, 2026 19:44	Victor Mercklé	CPPg++14.2.0	Success	3,880
Aug 11, 2026 19:39	Victor Mercklé	CPPg++14.2.0	Success	3,876
Aug 11, 2026 19:34	Victor Mercklé	CPPg++14.2.0	Success	3,945
Aug 11, 2026 19:27	Victor Mercklé	CPPg++14.2.0	Success	3,959
Aug 11, 2026 19:22	Victor Mercklé	CPPg++13.3.0	Success	3,897
Aug 11, 2026 19:17	Victor Mercklé	CPPclang++20.1.2	Success	4,564
Aug 11, 2026 18:55	Victor Mercklé	CPPg++14.2.0	Success	3,853
Aug 11, 2026 18:50	Victor Mercklé	CPPg++14.2.0	Success	3,882
Aug 11, 2026 18:45	Victor Mercklé	CPPg++14.2.0	Success	5,668
Aug 11, 2026 18:39	Victor Mercklé	CPPg++14.2.0	Success	3,872
Aug 11, 2026 18:34	Victor Mercklé	CPPg++14.2.0	Success	3,859
Aug 11, 2026 18:29	Victor Mercklé	CPPg++14.2.0	Success	4,121
Aug 11, 2026 18:24	Victor Mercklé	CPPg++14.2.0	Success	3,872
Aug 11, 2026 18:19	Victor Mercklé	CPPg++14.2.0	Success	3,854
Aug 11, 2026 18:00	Victor Mercklé	CPPg++14.2.0	Success	4,038
Aug 11, 2026 17:55	Victor Mercklé	CPPg++14.2.0	Success	4,476
Aug 11, 2026 17:49	Victor Mercklé	CPPg++14.2.0	Success	4,058
Aug 11, 2026 17:44	Victor Mercklé	CPPg++14.2.0	Success	5,299
Aug 11, 2026 17:39	Victor Mercklé	CPPg++14.2.0	Success	3,907
Aug 11, 2026 17:23	Victor Mercklé	CPPg++14.2.0	Success	4,179
Aug 11, 2026 17:18	Victor Mercklé	CPPg++14.2.0	Success	3,870
Aug 11, 2026 17:13	Victor Mercklé	CPPg++14.2.0	Success	3,878
Aug 11, 2026 17:08	Victor Mercklé	CPPg++14.2.0	Success	3,862
Aug 11, 2026 17:02	Victor Mercklé	CPPg++14.2.0	Success	64,076
Aug 11, 2026 16:47	Victor Mercklé	CPPg++14.2.0	Success	4,227
Aug 11, 2026 16:42	Victor Mercklé	CPPg++14.2.0	Success	6,741
Aug 11, 2026 16:37	Victor Mercklé	CPPg++14.2.0	Success	3,869
Aug 11, 2026 16:31	Victor Mercklé	CPPg++14.2.0	Success	5,771
Aug 11, 2026 16:26	Victor Mercklé	CPPg++14.2.0	Success	8,465
Aug 11, 2026 16:17	Victor Mercklé	CPPg++14.2.0	Success	4,578
Aug 11, 2026 16:10	Victor Mercklé	CPPg++14.2.0	Success	3,989
Aug 11, 2026 16:08	wn	CPPg++14.2.0	Error
Aug 11, 2026 16:05	Victor Mercklé	CPPg++14.2.0	Success	3,857
Aug 11, 2026 16:04	wn	CPPg++14.2.0	Error
Aug 11, 2026 16:01	wn	CPPg++14.2.0	Error
Aug 11, 2026 15:59	Victor Mercklé	CPPg++14.2.0	Success	3,856
Aug 11, 2026 15:58	wn	CPPg++14.2.0	Error
Aug 11, 2026 15:55	wn	CPPg++14.2.0	Error
Aug 11, 2026 15:54	Victor Mercklé	CPPg++14.2.0	Success	11,941
Aug 11, 2026 15:51	wn	CPPg++14.2.0	Error
Aug 11, 2026 15:49	Victor Mercklé	CPPg++14.2.0	Success	6,743
Aug 11, 2026 15:44	Victor Mercklé	CPPg++14.2.0	Success	3,978
Aug 11, 2026 15:39	Victor Mercklé	CPPg++14.2.0	Success	3,901
Aug 11, 2026 15:35	Rabenknecht	CPPg++13.3.0	Error
Aug 11, 2026 15:34	Rabenknecht	CPPg++13.3.0	Success	52,140
Aug 11, 2026 15:31	Rabenknecht	CPPg++14.2.0	Success	52,452
Aug 11, 2026 15:30	Rabenknecht	CPPg++13.3.0	Success	58,171
Aug 11, 2026 14:48	Victor Mercklé	CPPg++14.2.0	Success	3,969
Aug 11, 2026 14:43	Victor Mercklé	CPPg++14.2.0	Success	9,530
Aug 11, 2026 14:32	Victor Mercklé	CPPg++14.2.0	Success	3,976
Aug 11, 2026 14:27	Victor Mercklé	CPPg++14.2.0	Success	4,260
Aug 11, 2026 14:12	Victor Mercklé	CPPg++14.2.0	Success	3,956
Aug 11, 2026 14:07	Victor Mercklé	CPPg++14.2.0	Success	4,385
Aug 11, 2026 14:02	Victor Mercklé	CPPg++14.2.0	Success	3,993
Aug 11, 2026 13:57	Victor Mercklé	CPPg++14.2.0	Success	3,966
Aug 11, 2026 13:46	Victor Mercklé	CPPg++14.2.0	Success	8,179
Aug 11, 2026 13:39	Victor Mercklé	CPPg++14.2.0	Success	63,776
Aug 11, 2026 13:17	Victor Mercklé	CPPg++14.2.0	Success	4,200
Aug 11, 2026 13:12	Victor Mercklé	CPPg++14.2.0	Success	3,852+8.73 RP
Aug 11, 2026 13:07	Victor Mercklé	CPPg++14.2.0	Success	3,877
Aug 11, 2026 13:02	Victor Mercklé	CPPg++14.2.0	Success	3,865+8.01 RP
Aug 11, 2026 12:56	Victor Mercklé	CPPg++14.2.0	Success	3,930
Aug 11, 2026 12:51	Victor Mercklé	CPPg++14.2.0	Success	3,920
Aug 11, 2026 12:44	Victor Mercklé	CPPg++14.2.0	Success	4,609
Aug 11, 2026 12:39	Victor Mercklé	CPPg++14.2.0	Success	3,893
Aug 11, 2026 12:34	Victor Mercklé	CPPg++14.2.0	Success	4,030
Aug 11, 2026 12:29	Victor Mercklé	CPPg++10.5.0	Success	3,909
Aug 11, 2026 12:24	Victor Mercklé	CPPg++14.2.0	Success	3,903
Aug 11, 2026 12:19	Victor Mercklé	CPPg++14.2.0	Success	4,366
Aug 11, 2026 12:04	Victor Mercklé	CPPg++14.2.0	Success	4,540
Aug 11, 2026 11:59	Victor Mercklé	CPPg++14.2.0	Success	3,923
Aug 11, 2026 11:54	Victor Mercklé	CPPg++14.2.0	Success	3,893
Aug 11, 2026 11:49	Victor Mercklé	CPPg++14.2.0	Success	3,887
Aug 11, 2026 11:44	Victor Mercklé	CPPg++13.3.0	Success	3,898
Aug 11, 2026 11:39	Victor Mercklé	CPPclang++20.1.2	Success	4,404
Aug 11, 2026 11:34	Victor Mercklé	CPPg++14.2.0	Success	5,873
Aug 11, 2026 11:31	Rabenknecht	CPPg++13.3.0	Success	51,847+1.85 RP
Aug 11, 2026 11:27	Rabenknecht	CPPg++13.3.0	Success	66,533
Aug 11, 2026 11:25	Rabenknecht	CPPg++13.3.0	Success	52,350+34.78 RP
Aug 11, 2026 11:17	Rabenknecht	CPPg++10.5.0	Success	65,793
Aug 11, 2026 11:16	Rabenknecht	CPPg++10.5.0	Success	64,005+3.23 RP
Aug 11, 2026 10:59	Rabenknecht	CPPg++10.5.0	Success	65,746
Aug 11, 2026 10:56	Rabenknecht	CPPg++10.5.0	Error
Aug 11, 2026 10:41	Rabenknecht	CPPg++10.5.0	Success	65,355+13.59 RP
Aug 11, 2026 10:34	Rabenknecht	CPPg++10.5.0	Error
Aug 11, 2026 10:32	Rabenknecht	CPPg++10.5.0	Success	71,723+11.53 RP
Aug 11, 2026 10:28	Rabenknecht	CPPg++10.5.0	Error
Aug 11, 2026 09:29	Rabenknecht	CPPg++10.5.0	Error
Aug 11, 2026 09:27	Rabenknecht	CPPg++10.5.0	Error
Aug 11, 2026 07:54	Rabenknecht	CPPg++10.5.0	Success	100,379
Aug 11, 2026 07:45	Rabenknecht	CPPg++13.3.0	Success	78,189+127.90 RP
Aug 11, 2026 01:39	Victor Mercklé	CPPg++14.2.0	Success	4,043
Aug 11, 2026 01:32	Victor Mercklé	CPPg++14.2.0	Success	3,988
Aug 11, 2026 01:11	Victor Mercklé	CPPg++14.2.0	Success	3,954
Aug 11, 2026 00:59	Victor Mercklé	CPPg++14.2.0	Success	3,877+6.64 RP
Aug 11, 2026 00:54	Victor Mercklé	CPPg++14.2.0	Success	3,901
Aug 11, 2026 00:49	Victor Mercklé	CPPg++14.2.0	Success	4,078

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