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	1:20.1.2-0ubuntu1~24.04.2	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.
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	3.0.13-0ubuntu3.9	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
May 14, 2026 14:36	Josu San Martin	CPPclang++17.0.6	Error
May 14, 2026 14:36	Josu San Martin	CPPclang++18.1.3	Error
May 14, 2026 14:35	Josu San Martin	CPPclang++19.1.1	Error
May 14, 2026 09:38	Victor Mercklé	CPPg++14.2.0	Success	660,501
May 14, 2026 09:31	Victor Mercklé	CPPg++14.2.0	Success	67,806
May 14, 2026 09:26	Victor Mercklé	CPPg++14.2.0	Success	61,447
May 14, 2026 09:21	Victor Mercklé	CPPg++14.2.0	Success	103,011
May 14, 2026 09:16	Victor Mercklé	CPPg++14.2.0	Success	59,283
May 14, 2026 09:10	Victor Mercklé	CPPg++14.2.0	Success	63,671
May 14, 2026 09:05	Victor Mercklé	CPPg++14.2.0	Success	58,743
May 14, 2026 08:54	Victor Mercklé	CPPg++14.2.0	Success	60,490
May 14, 2026 08:47	Victor Mercklé	CPPg++14.2.0	Success	74,830
May 14, 2026 08:41	Victor Mercklé	CPPg++14.2.0	Success	67,562
May 14, 2026 08:36	Victor Mercklé	CPPg++14.2.0	Success	66,308
May 14, 2026 08:31	Victor Mercklé	CPPg++14.2.0	Success	62,311
May 14, 2026 08:26	Victor Mercklé	CPPg++14.2.0	Success	63,702
May 14, 2026 08:21	Victor Mercklé	CPPg++14.2.0	Success	58,971
May 14, 2026 08:16	Victor Mercklé	CPPg++14.2.0	Success	58,539
May 14, 2026 08:11	Victor Mercklé	CPPg++14.2.0	Success	58,734
May 14, 2026 08:06	Victor Mercklé	CPPg++14.2.0	Success	59,250
May 14, 2026 08:01	Victor Mercklé	CPPg++14.2.0	Success	60,729
May 14, 2026 07:56	Victor Mercklé	CPPg++14.2.0	Success	58,536
May 14, 2026 07:51	Victor Mercklé	CPPg++14.2.0	Success	59,983
May 14, 2026 07:46	Victor Mercklé	CPPg++14.2.0	Success	58,687
May 14, 2026 07:41	Victor Mercklé	CPPg++14.2.0	Success	60,116
May 14, 2026 07:36	Victor Mercklé	CPPg++14.2.0	Success	6,983
May 14, 2026 07:31	Victor Mercklé	CPPg++14.2.0	Success	6,966
May 14, 2026 07:26	Victor Mercklé	CPPg++14.2.0	Success	6,991
May 14, 2026 07:21	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 07:16	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 07:09	Victor Mercklé	CPPg++14.2.0	Success	6,973
May 14, 2026 07:04	Victor Mercklé	CPPg++14.2.0	Success	6,985
May 14, 2026 06:59	Victor Mercklé	CPPg++14.2.0	Success	6,968
May 14, 2026 06:54	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 06:49	Victor Mercklé	CPPg++14.2.0	Success	6,966+0.62 RP
May 14, 2026 06:44	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 06:39	Victor Mercklé	CPPg++14.2.0	Success	6,969+2.67 RP
May 14, 2026 06:34	Victor Mercklé	CPPg++14.2.0	Success	6,982+0.41 RP
May 14, 2026 06:29	Victor Mercklé	CPPg++14.2.0	Success	6,984+2.66 RP
May 14, 2026 06:24	Victor Mercklé	CPPg++14.2.0	Success	6,997+0.20 RP
May 14, 2026 06:19	Victor Mercklé	CPPg++14.2.0	Success	7,096
May 14, 2026 06:14	Victor Mercklé	CPPg++14.2.0	Success	7,003
May 14, 2026 06:09	Victor Mercklé	CPPg++14.2.0	Success	7,004
May 14, 2026 05:24	Victor Mercklé	CPPg++14.2.0	Success	30,233
May 14, 2026 05:19	Victor Mercklé	CPPg++14.2.0	Success	7,005
May 14, 2026 05:14	Victor Mercklé	CPPg++14.2.0	Success	7,249
May 14, 2026 05:09	Victor Mercklé	CPPg++14.2.0	Success	7,001
May 14, 2026 05:04	Victor Mercklé	CPPg++14.2.0	Success	7,003
May 14, 2026 04:35	Victor Mercklé	CPPg++14.2.0	Success	6,998+4.28 RP
May 14, 2026 04:28	Victor Mercklé	CPPg++14.2.0	Success	7,019+4.25 RP
May 14, 2026 04:21	Victor Mercklé	CPPg++14.2.0	Success	7,277
May 14, 2026 04:16	Victor Mercklé	CPPg++14.2.0	Success	7,060
May 14, 2026 04:11	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 04:06	Victor Mercklé	CPPg++14.2.0	Success	7,040+6.03 RP
May 14, 2026 03:56	Victor Mercklé	CPPg++14.2.0	Success	7,070+21.09 RP
May 14, 2026 03:43	Victor Mercklé	CPPg++14.2.0	Success	7,177+4.64 RP
May 14, 2026 03:18	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 03:13	Victor Mercklé	CPPg++14.2.0	Success	7,201+8.05 RP
May 14, 2026 03:08	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 02:39	Victor Mercklé	CPPg++14.2.0	Success	7,243+8.90 RP
May 14, 2026 02:27	Victor Mercklé	CPPg++14.2.0	Success	7,290
May 14, 2026 02:22	Victor Mercklé	CPPg++14.2.0	Success	7,290+0.19 RP
May 14, 2026 02:17	Victor Mercklé	CPPg++14.2.0	Success	7,415
May 14, 2026 02:12	Victor Mercklé	CPPg++14.2.0	Success	7,291+1.32 RP
May 14, 2026 02:02	Victor Mercklé	CPPg++14.2.0	Success	7,329
May 14, 2026 01:38	Victor Mercklé	CPPg++14.2.0	Success	7,298+27.60 RP
May 14, 2026 01:31	Victor Mercklé	CPPg++14.2.0	Success	7,448+6.10 RP
May 14, 2026 01:24	Victor Mercklé	CPPg++14.2.0	Success	7,482+7.28 RP
May 14, 2026 01:00	Victor Mercklé	CPPg++14.2.0	Error
May 14, 2026 00:49	Victor Mercklé	CPPg++14.2.0	Success	7,599
May 14, 2026 00:44	Victor Mercklé	CPPg++14.2.0	Success	7,523+1.76 RP
May 14, 2026 00:33	Victor Mercklé	CPPg++14.2.0	Success	7,533+6.14 RP
May 14, 2026 00:28	Victor Mercklé	CPPg++14.2.0	Error
May 13, 2026 23:49	Victor Mercklé	CPPg++14.2.0	Success	7,574
May 13, 2026 23:44	Victor Mercklé	CPPg++14.2.0	Success	7,665
May 13, 2026 23:43	Victor Mercklé	CPPg++14.2.0	Error
May 13, 2026 23:37	Victor Mercklé	CPPg++14.2.0	Success	7,573
May 13, 2026 23:32	Victor Mercklé	CPPg++14.2.0	Success	7,574
May 13, 2026 23:27	Victor Mercklé	CPPg++14.2.0	Success	7,612
May 13, 2026 23:22	Victor Mercklé	CPPg++14.2.0	Error
May 13, 2026 23:17	Victor Mercklé	CPPg++14.2.0	Success	7,568+2.96 RP
May 13, 2026 23:12	Victor Mercklé	CPPg++14.2.0	Success	7,585
May 13, 2026 23:07	Victor Mercklé	CPPg++14.2.0	Success	7,589
May 13, 2026 23:02	Victor Mercklé	CPPg++14.2.0	Success	7,676
May 13, 2026 22:57	Victor Mercklé	CPPg++14.2.0	Success	7,585+2.60 RP
May 13, 2026 22:42	Victor Mercklé	CPPg++14.2.0	Success	7,604
May 13, 2026 22:39	flavio87	CPPg++14.2.0	Success	6,137+43.67 RP
May 13, 2026 22:37	flavio87	CPPg++10.5.0	Success	6,306+77.95 RP
May 13, 2026 21:48	Victor Mercklé	CPPg++14.2.0	Success	53,184
May 13, 2026 21:41	Victor Mercklé	CPPg++14.2.0	Success	71,400
May 13, 2026 21:35	Victor Mercklé	CPPg++14.2.0	Success	7,604
May 13, 2026 21:30	Victor Mercklé	CPPg++14.2.0	Success	7,600+0.35 RP
May 13, 2026 21:25	Victor Mercklé	CPPg++14.2.0	Error
May 13, 2026 21:20	Victor Mercklé	CPPg++14.2.0	Success	7,602+15.90 RP
May 13, 2026 21:15	Victor Mercklé	CPPg++14.2.0	Success	7,750
May 13, 2026 21:10	Victor Mercklé	CPPg++14.2.0	Success	7,730
May 13, 2026 21:05	Victor Mercklé	CPPg++14.2.0	Success	7,726
May 13, 2026 20:59	Victor Mercklé	CPPg++14.2.0	Success	7,788
May 13, 2026 20:52	Victor Mercklé	CPPg++14.2.0	Success	7,727
May 13, 2026 20:45	Victor Mercklé	CPPg++14.2.0	Success	7,711

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