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
Feb 9, 2026 20:51	Daniel Mastalerz	CPPclang++18.1.3	Success	9,502+0.55 RP
Feb 9, 2026 20:44	Daniel Mastalerz	CPPg++13.3.0	Success	13,641
Feb 9, 2026 20:44	Daniel Mastalerz	CPPclang++18.1.3	Success	13,222
Feb 9, 2026 20:39	Daniel Mastalerz	CPPclang++18.1.3	Success	9,507+37.04 RP
Feb 9, 2026 20:39	Daniel Mastalerz	CPPg++13.3.0	Success	9,854+16.91 RP
Feb 9, 2026 20:34	Daniel Mastalerz	CPPclang++18.1.3	Success	11,204
Feb 9, 2026 20:34	Daniel Mastalerz	CPPg++13.3.0	Success	12,890
Feb 9, 2026 20:26	Daniel Mastalerz	CPPg++13.3.0	Success	10,026
Feb 9, 2026 20:25	Daniel Mastalerz	CPPg++13.3.0	Success	11,416
Feb 9, 2026 20:02	Daniel Mastalerz	CPPg++13.3.0	Success	10,021+37.11 RP
Feb 9, 2026 20:01	Daniel Mastalerz	CPPclang++18.1.3	Success	10,408+13.11 RP
Feb 9, 2026 19:29	Ayush Sharma	CPPg++13.3.0	Success	478,267
Feb 9, 2026 19:29	Daniel Mastalerz	CPPclang++18.1.3	Success	10,568
Feb 9, 2026 19:07	Ayush Sharma	CPPg++13.3.0	Success	175,359+0.03 RP
Feb 9, 2026 18:59	Ayush Sharma	CPPg++13.3.0	Success	175,463+0.84 RP
Feb 9, 2026 18:50	nun	RUSTrust-1.93.0	Success	58,813+59.75 RP
Feb 9, 2026 18:49	Ayush Sharma	CPPg++13.3.0	Success	178,101+51.26 RP
Feb 9, 2026 18:46	nun	RUSTrust-1.93.0	Error
Feb 9, 2026 18:43	nun	RUSTrust-1.93.0	Success	90,679+45.58 RP
Feb 9, 2026 18:26	nun	RUSTrust-1.93.0	Success	154,551+37.65 RP
Feb 9, 2026 18:08	Mikołaj Uzarski	CPPg++13.3.0	Success	10,711
Feb 9, 2026 18:06	Mikołaj Uzarski	CPPclang++18.1.3	Success	9,490+114.77 RP
Feb 9, 2026 16:58	lipapipa	CPPg++13.3.0	Success	10,039+51.47 RP
Feb 9, 2026 16:49	nun	RUSTrust-1.93.0	Success	369,649+27.05 RP
Feb 9, 2026 16:45	lipapipa	CPPg++13.3.0	Success	10,586+118.06 RP
Feb 9, 2026 16:18	lipapipa	CPPg++13.3.0	Success	12,098+98.57 RP
Feb 9, 2026 16:05	lipapipa	CPPg++13.3.0	Success	42,397
Feb 8, 2026 22:40	Mikołaj Uzarski	CPPclang++18.1.3	Error
Feb 8, 2026 22:39	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 22:38	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 21:59	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 21:56	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 21:54	Mikołaj Uzarski	CPPg++13.3.0	Success	10,652
Feb 8, 2026 21:50	Mikołaj Uzarski	CPPg++13.3.0	Success	10,657
Feb 8, 2026 20:29	Daniel Mastalerz	CPPclang++18.1.3	Success	11,862
Feb 8, 2026 20:26	Daniel Mastalerz	CPPclang++18.1.3	Success	10,552+8.72 RP
Feb 8, 2026 20:20	Daniel Mastalerz	CPPclang++18.1.3	Success	10,650+8.73 RP
Feb 8, 2026 19:35	Mikołaj Uzarski	CPPg++13.3.0	Success	10,651
Feb 8, 2026 19:29	Mikołaj Uzarski	CPPg++13.3.0	Success	10,650+324.75 RP
Feb 8, 2026 19:17	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 19:09	Mikołaj Uzarski	CPPg++13.3.0	Success	16,436
Feb 8, 2026 19:05	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 18:57	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 18:44	Mikołaj Uzarski	CPPg++13.3.0	Success	16,817
Feb 8, 2026 18:34	Mikołaj Uzarski	CPPg++13.3.0	Success	16,281+349.80 RP
Feb 8, 2026 18:21	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 18:16	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 18:11	Mikołaj Uzarski	CPPg++13.3.0	Success	38,045
Feb 8, 2026 18:05	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 18:01	Mikołaj Uzarski	CPPg++13.3.0	Success	880,969
Feb 8, 2026 17:53	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 17:41	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 17:26	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 17:16	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 17:11	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 17:10	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 16:58	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 16:58	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 16:20	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 16:16	Mikołaj Uzarski	CPPg++13.3.0	Error
Feb 8, 2026 12:49	Daniel Mastalerz	CPPclang++18.1.3	Success	11,763
Feb 8, 2026 12:43	Daniel Mastalerz	CPPclang++18.1.3	Success	10,750+0.17 RP
Feb 8, 2026 12:33	Daniel Mastalerz	CPPclang++18.1.3	Success	10,752+170.93 RP
Feb 8, 2026 12:32	Daniel Mastalerz	CPPg++13.3.0	Success	13,173+8.77 RP
Feb 8, 2026 12:25	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 12:25	Daniel Mastalerz	CPPg++13.3.0	Success	93,351
Feb 8, 2026 12:23	Daniel Mastalerz	CPPg++13.3.0	Success	13,421
Feb 8, 2026 12:21	Daniel Mastalerz	CPPg++13.3.0	Success	13,872
Feb 8, 2026 12:21	Daniel Mastalerz	CPPg++13.3.0	Success	13,903
Feb 8, 2026 12:18	Daniel Mastalerz	CPPg++13.3.0	Success	13,327+0.79 RP
Feb 8, 2026 12:15	Daniel Mastalerz	CPPg++13.3.0	Success	13,341+3.19 RP
Feb 8, 2026 12:10	Daniel Mastalerz	CPPg++13.3.0	Success	53,957
Feb 8, 2026 12:08	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 12:01	Daniel Mastalerz	CPPg++13.3.0	Success	13,399
Feb 8, 2026 10:57	Daniel Mastalerz	CPPg++13.3.0	Success	13,398
Feb 8, 2026 10:54	Daniel Mastalerz	CPPg++13.3.0	Success	13,398+7.88 RP
Feb 8, 2026 10:52	Daniel Mastalerz	CPPg++13.3.0	Success	14,965
Feb 8, 2026 10:50	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 10:48	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 10:45	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 10:36	Daniel Mastalerz	CPPg++13.3.0	Success	14,766
Feb 8, 2026 10:29	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 10:28	Daniel Mastalerz	CPPg++13.3.0	Success	17,741
Feb 8, 2026 10:25	Daniel Mastalerz	CPPg++13.3.0	Success	13,974
Feb 8, 2026 10:24	Daniel Mastalerz	CPPg++13.3.0	Success	33,961
Feb 8, 2026 10:23	Daniel Mastalerz	CPPg++13.3.0	Success	14,111
Feb 8, 2026 10:20	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 8, 2026 10:17	Daniel Mastalerz	CPPg++13.3.0	Success	13,995
Feb 8, 2026 10:17	Daniel Mastalerz	CPPg++13.3.0	Success	14,604
Feb 8, 2026 10:11	Daniel Mastalerz	CPPg++13.3.0	Success	26,677
Feb 8, 2026 10:07	Daniel Mastalerz	CPPg++13.3.0	Success	1,260,855
Feb 8, 2026 09:43	Brian Chew	CPPg++13.3.0	Success	53,642
Feb 8, 2026 07:15	Brian Chew	CPPg++13.3.0	Success	52,875
Feb 8, 2026 06:47	Brian Chew	CPPg++13.3.0	Error
Feb 8, 2026 06:38	Brian Chew	CPPg++13.3.0	Success	73,056
Feb 8, 2026 06:28	Brian Chew	CPPg++13.3.0	Success	61,877
Feb 8, 2026 06:22	Brian Chew	CPPg++13.3.0	Success	44,677+74.17 RP
Feb 8, 2026 06:19	Brian Chew	CPPg++13.3.0	Success	66,819+122.54 RP
Feb 8, 2026 06:17	howen	RUSTrust-1.93.0	Success	88,295
Feb 8, 2026 06:15	Brian Chew	CPPg++13.3.0	Success	368,805+27.11 RP

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