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
Feb 18, 2026 10:06	wn	CPPclang++18.1.3	Success	7,254
Feb 18, 2026 10:03	wn	CPPclang++18.1.3	Success	7,186
Feb 18, 2026 10:03	wn	CPPclang++18.1.3	Success	7,259
Feb 18, 2026 10:02	wn	CPPclang++18.1.3	Success	7,258
Feb 18, 2026 10:01	wn	CPPclang++18.1.3	Success	8,399
Feb 18, 2026 10:00	wn	CPPclang++18.1.3	Success	7,255
Feb 18, 2026 10:00	wn	CPPclang++18.1.3	Error
Feb 18, 2026 09:58	wn	CPPclang++18.1.3	Success	7,091+9.29 RP
Feb 18, 2026 09:57	wn	CPPclang++18.1.3	Success	7,217
Feb 18, 2026 09:57	wn	CPPclang++18.1.3	Success	7,138+6.84 RP
Feb 18, 2026 09:57	wn	CPPclang++18.1.3	Success	7,202
Feb 18, 2026 09:57	CheckHarry	CPPg++13.3.0	Success	82,969
Feb 18, 2026 09:56	wn	CPPclang++18.1.3	Success	7,267
Feb 18, 2026 09:56	wn	CPPclang++18.1.3	Error
Feb 18, 2026 09:52	wn	CPPclang++18.1.3	Success	7,304
Feb 18, 2026 09:43	CheckHarry	CPPg++13.3.0	Success	44,617+18.50 RP
Feb 18, 2026 09:43	wn	CPPclang++18.1.3	Success	10,212
Feb 18, 2026 09:36	wn	CPPclang++18.1.3	Success	15,372
Feb 18, 2026 09:23	CheckHarry	CPPg++13.3.0	Success	48,630+28.97 RP
Feb 18, 2026 09:17	Daniel Mastalerz	CPPclang++18.1.3	Success	7,086
Feb 18, 2026 09:06	Daniel Mastalerz	CPPg++13.3.0	Success	6,869
Feb 18, 2026 09:02	Daniel Mastalerz	CPPg++13.3.0	Error
Feb 18, 2026 04:01	Josu San Martin	CPPg++13.3.0	Success	6,119
Feb 18, 2026 03:56	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:55	Josu San Martin	CPPclang++18.1.3	Error
Feb 18, 2026 03:55	Josu San Martin	CPPclang++18.1.3	Success	6,238
Feb 18, 2026 03:52	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:40	Daniel Mastalerz	CPPclang++18.1.3	Success	6,933
Feb 18, 2026 03:35	Daniel Mastalerz	CPPclang++18.1.3	Success	7,087
Feb 18, 2026 03:34	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:30	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:25	Daniel Mastalerz	CPPclang++18.1.3	Success	7,087
Feb 18, 2026 03:23	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:21	Daniel Mastalerz	CPPclang++18.1.3	Success	7,051
Feb 18, 2026 03:18	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 03:05	Daniel Mastalerz	CPPclang++18.1.3	Success	6,702
Feb 18, 2026 03:00	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 02:51	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 02:47	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 02:44	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 02:40	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 02:30	Adam LaRusso	CPPg++13.3.0	Error
Feb 18, 2026 02:23	Adam LaRusso	CPPg++13.3.0	Error
Feb 18, 2026 02:09	Adam LaRusso	CPPg++13.3.0	Success	56,981+4.91 RP
Feb 18, 2026 02:07	Adam LaRusso	CPPg++13.3.0	Success	58,620+14.76 RP
Feb 18, 2026 02:01	Adam LaRusso	CPPg++13.3.0	Success	64,171+150.99 RP
Feb 18, 2026 01:45	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:43	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:42	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:40	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:32	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:30	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:27	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:22	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:17	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 01:14	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:54	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:53	Daniel Mastalerz	CPPclang++18.1.3	Success	7,258
Feb 18, 2026 00:49	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:48	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:45	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:39	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:36	Daniel Mastalerz	CPPclang++18.1.3	Success	6,243+5.37 RP
Feb 18, 2026 00:32	olliecrow	CPPg++13.3.0	Success	5,932
Feb 18, 2026 00:25	Daniel Mastalerz	CPPclang++18.1.3	Success	6,264+1.53 RP
Feb 18, 2026 00:25	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:24	Daniel Mastalerz	CPPclang++18.1.3	Success	6,386
Feb 18, 2026 00:24	olliecrow	CPPg++13.3.0	Success	5,903
Feb 18, 2026 00:23	olliecrow	CPPg++13.3.0	Success	7,081
Feb 18, 2026 00:23	olliecrow	CPPg++13.3.0	Success	8,151
Feb 18, 2026 00:22	olliecrow	CPPg++13.3.0	Success	8,175
Feb 18, 2026 00:20	Daniel Mastalerz	CPPclang++18.1.3	Success	8,330
Feb 18, 2026 00:17	Daniel Mastalerz	CPPclang++18.1.3	Success	6,270+2.03 RP
Feb 18, 2026 00:04	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:03	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 18, 2026 00:03	Daniel Mastalerz	CPPclang++18.1.3	Success	6,510
Feb 18, 2026 00:02	Daniel Mastalerz	CPPclang++18.1.3	Success	7,214
Feb 18, 2026 00:00	Daniel Mastalerz	CPPclang++18.1.3	Success	7,174
Feb 17, 2026 23:59	Daniel Mastalerz	CPPclang++18.1.3	Success	7,633
Feb 17, 2026 23:54	Daniel Mastalerz	CPPclang++18.1.3	Success	7,138
Feb 17, 2026 23:49	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 17, 2026 23:28	Daniel Mastalerz	CPPclang++18.1.3	Success	6,643
Feb 17, 2026 22:40	lipapipa	CPPg++13.3.0	Success	6,677+12.02 RP
Feb 17, 2026 22:34	Daniel Mastalerz	CPPclang++18.1.3	Success	6,821
Feb 17, 2026 22:29	lipapipa	CPPg++13.3.0	Success	6,815
Feb 17, 2026 22:28	lipapipa	CPPg++13.3.0	Success	6,744
Feb 17, 2026 22:22	Daniel Mastalerz	CPPclang++18.1.3	Success	6,666
Feb 17, 2026 22:19	Daniel Mastalerz	CPPclang++18.1.3	Success	6,655
Feb 17, 2026 22:18	Daniel Mastalerz	CPPclang++18.1.3	Success	6,656
Feb 17, 2026 22:15	Adam LaRusso	CPPg++13.3.0	Success	2,066,605+4.84 RP
Feb 17, 2026 22:07	Daniel Mastalerz	CPPclang++18.1.3	Success	6,696
Feb 17, 2026 21:54	lipapipa	CPPg++13.3.0	Success	6,772
Feb 17, 2026 21:53	lipapipa	CPPg++13.3.0	Success	6,731+20.89 RP
Feb 17, 2026 21:43	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 17, 2026 21:41	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 17, 2026 21:31	Daniel Mastalerz	CPPclang++18.1.3	Error
Feb 17, 2026 21:26	wn	CPPclang++18.1.3	Success	11,065
Feb 17, 2026 21:12	wn	CPPclang++18.1.3	Success	10,988
Feb 17, 2026 21:12	wn	CPPclang++18.1.3	Success	15,462
Feb 17, 2026 21:05	wn	CPPclang++18.1.3	Success	11,168

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