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
Apr 13, 2026 20:37	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:51	Yuriy Lyfenko	CPPg++13.3.0	Error	+4.34 RP
Apr 13, 2026 19:51	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:40	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:39	Josu San Martin	CPPclang++18.1.3	Success	5,021
Apr 13, 2026 19:33	Daniel Mastalerz	CPPclang++18.1.3	Success	8,682
Apr 13, 2026 19:26	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:25	Yuriy Lyfenko	CPPg++13.3.0	Error	+1.08 RP
Apr 13, 2026 19:20	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:20	Yuriy Lyfenko	CPPclang++18.1.3	Error
Apr 13, 2026 19:10	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:08	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:06	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 19:05	Yuriy Lyfenko	CPPclang++18.1.3	Error
Apr 13, 2026 19:00	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:57	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:56	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:55	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:55	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:54	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:53	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:53	Yuriy Lyfenko	CPPg++13.3.0	Error	+19.85 RP
Apr 13, 2026 18:52	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:52	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:51	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:51	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:46	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:46	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:34	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:33	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:33	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:32	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:31	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:31	Yuriy Lyfenko	CPPclang++18.1.3	Error
Apr 13, 2026 18:30	Yuriy Lyfenko	CPPg++13.3.0	Error	+7.42 RP
Apr 13, 2026 18:29	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:29	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:28	Yuriy Lyfenko	CPPg++13.3.0	Error	+6.32 RP
Apr 13, 2026 18:27	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:25	Yuriy Lyfenko	CPPg++13.3.0	Error	+87.94 RP
Apr 13, 2026 18:21	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:21	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 18:20	Yuriy Lyfenko	CPPg++13.3.0	Error
Apr 13, 2026 16:24	Josu San Martin	CPPclang++18.1.3	Success	5,237
Apr 13, 2026 14:43	Josu San Martin	CPPclang++18.1.3	Success	5,289
Apr 13, 2026 14:40	Josu San Martin	CPPclang++18.1.3	Success	5,181
Apr 13, 2026 14:36	Josu San Martin	CPPclang++18.1.3	Success	5,456
Apr 13, 2026 13:25	wn	CPPclang++18.1.3	Success	5,881
Apr 13, 2026 13:21	wn	CPPclang++18.1.3	Success	5,170
Apr 13, 2026 12:53	wn	CPPclang++18.1.3	Error
Apr 13, 2026 12:45	wn	CPPclang++18.1.3	Error
Apr 13, 2026 12:43	wn	CPPclang++18.1.3	Error
Apr 13, 2026 12:41	wn	CPPclang++18.1.3	Error	+11.48 RP
Apr 13, 2026 12:10	wn	CPPclang++18.1.3	Error
Apr 13, 2026 12:09	wn	CPPclang++18.1.3	Error
Apr 13, 2026 12:03	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:55	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:43	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:41	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:39	Daniel Mastalerz	CPPclang++18.1.3	Success	5,983
Apr 13, 2026 11:39	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:37	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:35	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:33	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:30	Daniel Mastalerz	CPPclang++18.1.3	Success	6,244
Apr 13, 2026 11:29	Oleg Skinderev	CPPg++13.3.0	Success	65,203+15.11 RP
Apr 13, 2026 11:27	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:27	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:22	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:16	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:10	wn	CPPclang++18.1.3	Error
Apr 13, 2026 11:07	wn	CPPclang++18.1.3	Error	+5.40 RP
Apr 13, 2026 10:49	wn	CPPclang++18.1.3	Error
Apr 13, 2026 10:43	wn	CPPclang++18.1.3	Error
Apr 13, 2026 10:41	wn	CPPclang++18.1.3	Error	+10.73 RP
Apr 13, 2026 10:39	wn	CPPclang++18.1.3	Error
Apr 13, 2026 10:39	wn	CPPclang++18.1.3	Error
Apr 13, 2026 10:36	wn	CPPclang++18.1.3	Error
Apr 13, 2026 10:36	wn	CPPclang++18.1.3	Error	+39.14 RP
Apr 13, 2026 10:35	wn	CPPclang++18.1.3	Success	4,292
Apr 13, 2026 10:34	wn	CPPg++13.3.0	Success	4,358
Apr 13, 2026 10:30	wn	CPPclang++18.1.3	Error	+29.52 RP
Apr 13, 2026 10:22	wn	CPPclang++18.1.3	Success	4,651
Apr 13, 2026 08:06	wn	CPPclang++18.1.3	Success	4,320
Apr 13, 2026 08:03	wn	CPPclang++18.1.3	Error
Apr 13, 2026 08:01	wn	CPPclang++18.1.3	Error
Apr 13, 2026 06:26	wn	CPPclang++18.1.3	Error
Apr 13, 2026 06:23	wn	CPPclang++18.1.3	Success	4,438
Apr 13, 2026 06:18	wn	CPPclang++18.1.3	Success	4,490
Apr 13, 2026 06:15	wn	CPPclang++18.1.3	Success	4,484
Apr 13, 2026 05:57	wn	CPPclang++18.1.3	Success	5,744
Apr 13, 2026 05:51	wn	CPPclang++18.1.3	Success	5,758
Apr 13, 2026 05:48	wn	CPPclang++18.1.3	Success	5,850
Apr 13, 2026 05:41	wn	CPPg++13.3.0	Success	5,579
Apr 13, 2026 05:15	wn	CPPg++13.3.0	Success	6,759
Apr 13, 2026 05:08	wn	CPPclang++18.1.3	Success	5,806
Apr 13, 2026 05:02	wn	CPPclang++18.1.3	Success	5,780
Apr 13, 2026 04:22	wn	CPPclang++18.1.3	Success	4,327
Apr 13, 2026 03:42	Josu San Martin	CPPclang++18.1.3	Success	7,360
Apr 13, 2026 02:56	Josu San Martin	CPPclang++18.1.3	Success	5,160

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