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
Sep 2, 2026 12:19	Victor Mercklé	CPPg++14.2.0	Success	3,967
Sep 2, 2026 12:13	CheckHarry	CPPg++13.3.0	Success	20,696
Sep 2, 2026 11:48	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 11:29	CheckHarry	CPPg++10.5.0	Success	38,358
Sep 2, 2026 11:18	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 11:16	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 11:07	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 11:00	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 10:59	CheckHarry	CPPg++10.5.0	Error
Sep 2, 2026 10:38	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 10:36	CheckHarry	CPPg++10.5.0	Success	33,545
Sep 2, 2026 10:36	CheckHarry	CPPg++10.5.0	Success	89,024
Sep 2, 2026 10:32	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 04:43	Victor Mercklé	CPPg++14.2.0	Success	3,680
Sep 2, 2026 03:52	Victor Mercklé	CPPg++14.2.0	Success	4,420
Sep 2, 2026 03:48	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:46	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:31	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:27	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:22	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:19	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:14	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:14	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:02	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 03:01	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:59	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:28	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:26	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:25	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:21	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:19	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:15	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:14	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:08	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:08	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:07	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:07	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:02	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 02:00	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:58	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:55	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:52	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:49	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:46	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:44	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:38	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:36	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:29	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:19	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:09	Victor Mercklé	CPPg++14.2.0	Success	3,699
Sep 2, 2026 01:07	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 01:02	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 00:49	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 00:39	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 00:26	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 00:07	Victor Mercklé	CPPg++14.2.0	Error
Sep 2, 2026 00:00	Victor Mercklé	CPPg++14.2.0	Error
Sep 1, 2026 23:47	Victor Mercklé	CPPg++14.2.0	Error
Sep 1, 2026 09:54	Haha Expert	CSHARP9.0.19	Success	64,839
Sep 1, 2026 09:09	Nikita Grivin	CPPg++10.5.0	Success	89,015+117.34 RP
Sep 1, 2026 07:47	Victor Mercklé	CPPg++14.2.0	Success	3,826
Sep 1, 2026 07:43	Victor Mercklé	CPPg++14.2.0	Success	3,741
Sep 1, 2026 07:40	Victor Mercklé	CPPg++14.2.0	Success	3,986
Sep 1, 2026 07:34	Victor Mercklé	CPPg++14.2.0	Success	3,793
Sep 1, 2026 07:31	Victor Mercklé	CPPg++14.2.0	Success	3,688
Sep 1, 2026 07:26	Victor Mercklé	CPPg++14.2.0	Success	4,852
Sep 1, 2026 07:16	Victor Mercklé	CPPg++14.2.0	Success	4,961
Sep 1, 2026 07:09	Victor Mercklé	CPPg++14.2.0	Success	4,736
Sep 1, 2026 07:07	Victor Mercklé	CPPg++14.2.0	Success	4,761
Sep 1, 2026 06:47	Victor Mercklé	CPPg++14.2.0	Success	3,755
Sep 1, 2026 06:44	Victor Mercklé	CPPg++14.2.0	Success	3,655
Sep 1, 2026 06:38	Victor Mercklé	CPPg++14.2.0	Success	3,803
Sep 1, 2026 06:36	Victor Mercklé	CPPg++14.2.0	Success	3,929
Sep 1, 2026 06:32	Victor Mercklé	CPPg++14.2.0	Success	3,807
Sep 1, 2026 06:26	Victor Mercklé	CPPg++14.2.0	Success	3,996
Sep 1, 2026 06:19	Victor Mercklé	CPPg++14.2.0	Success	3,638+23.97 RP
Sep 1, 2026 04:14	Victor Mercklé	CPPg++14.2.0	Success	3,684+5.00 RP
Sep 1, 2026 01:42	Haha Expert	CSHARP9.0.19	Success	64,775+5.00 RP
Sep 1, 2026 01:40	Haha Expert	CSHARP9.0.19	Error
Aug 31, 2026 13:37	Victor Mercklé	CPPg++14.2.0	Success	56,764
Aug 31, 2026 12:08	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 12:04	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 11:50	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 11:15	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 11:08	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 11:06	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 10:49	Victor Mercklé	CPPg++14.2.0	Success	4,305
Aug 31, 2026 10:45	Victor Mercklé	CPPg++14.2.0	Success	4,181
Aug 31, 2026 10:35	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 10:32	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 10:09	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 10:03	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 09:59	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 06:25	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 06:16	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 06:07	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 05:59	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 05:42	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 05:33	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 05:28	Victor Mercklé	CPPg++14.2.0	Error

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