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
Aug 31, 2026 05:10	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:54	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:53	Josu San Martin	CPPclang++18.1.3	Success	4,353
Aug 31, 2026 04:48	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:42	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:38	Josu San Martin	CPPclang++18.1.3	Success	4,231
Aug 31, 2026 04:32	Josu San Martin	CPPclang++18.1.3	Success	4,364
Aug 31, 2026 04:26	Josu San Martin	CPPclang++18.1.3	Success	4,417
Aug 31, 2026 04:26	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:19	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 04:11	Josu San Martin	CPPclang++18.1.3	Success	7,590
Aug 31, 2026 04:05	Josu San Martin	CPPclang++18.1.3	Success	7,852
Aug 31, 2026 03:51	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 03:29	Josu San Martin	CPPclang++18.1.3	Success	4,608
Aug 31, 2026 03:25	Josu San Martin	CPPclang++18.1.3	Success	4,555
Aug 31, 2026 03:17	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 02:53	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 02:31	Josu San Martin	CPPg++14.2.0	Success	4,936
Aug 31, 2026 02:19	Josu San Martin	CPPclang++18.1.3	Success	5,407
Aug 31, 2026 01:44	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 01:43	Josu San Martin	CPPclang++18.1.3	Success	4,236
Aug 31, 2026 01:32	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 01:24	Josu San Martin	CPPclang++18.1.3	Success	5,826
Aug 31, 2026 01:19	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 01:07	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 01:01	Josu San Martin	CPPclang++18.1.3	Success	4,379
Aug 31, 2026 00:41	Josu San Martin	CPPclang++18.1.3	Success	4,879
Aug 31, 2026 00:39	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 00:30	Josu San Martin	CPPclang++18.1.3	Success	4,589
Aug 31, 2026 00:25	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 00:15	Victor Mercklé	CPPg++14.2.0	Error
Aug 31, 2026 00:03	Josu San Martin	CPPclang++18.1.3	Success	4,280
Aug 30, 2026 23:59	Victor Mercklé	CPPg++14.2.0	Error
Aug 30, 2026 23:50	Victor Mercklé	CPPg++14.2.0	Error
Aug 30, 2026 23:32	Josu San Martin	CPPclang++18.1.3	Success	5,456
Aug 30, 2026 23:31	Victor Mercklé	CPPg++14.2.0	Error
Aug 30, 2026 23:20	Victor Mercklé	CPPg++14.2.0	Error
Aug 30, 2026 23:17	Josu San Martin	CPPclang++18.1.3	Success	4,386
Aug 30, 2026 23:00	Josu San Martin	CPPclang++18.1.3	Success	6,164
Aug 30, 2026 22:39	Josu San Martin	CPPclang++18.1.3	Success	4,243
Aug 30, 2026 22:32	Josu San Martin	CPPclang++18.1.3	Success	4,268
Aug 30, 2026 22:27	Josu San Martin	CPPclang++18.1.3	Success	5,853
Aug 30, 2026 22:12	Josu San Martin	CPPclang++18.1.3	Success	4,436
Aug 30, 2026 22:09	Josu San Martin	CPPclang++18.1.3	Success	4,410
Aug 30, 2026 22:06	Josu San Martin	CPPclang++18.1.3	Success	4,249
Aug 30, 2026 22:03	Josu San Martin	CPPclang++18.1.3	Success	4,284
Aug 30, 2026 21:58	Josu San Martin	CPPclang++18.1.3	Success	4,227+0.56 RP
Aug 30, 2026 21:57	Josu San Martin	CPPclang++18.1.3	Success	4,228+7.25 RP
Aug 30, 2026 21:55	Josu San Martin	CPPclang++18.1.3	Success	4,241+0.56 RP
Aug 30, 2026 21:53	Josu San Martin	CPPclang++18.1.3	Success	4,300
Aug 30, 2026 21:51	Victor Mercklé	CPPg++14.2.0	Success	3,808
Aug 30, 2026 21:50	Josu San Martin	CPPclang++18.1.3	Success	4,273
Aug 30, 2026 21:45	Josu San Martin	CPPclang++18.1.3	Success	4,297
Aug 30, 2026 21:43	Josu San Martin	CPPclang++18.1.3	Success	4,263
Aug 30, 2026 21:42	Josu San Martin	CPPclang++18.1.3	Success	4,279
Aug 30, 2026 21:38	Josu San Martin	CPPclang++18.1.3	Success	4,242+13.26 RP
Aug 30, 2026 21:32	Josu San Martin	CPPclang++18.1.3	Success	4,271
Aug 30, 2026 21:29	Josu San Martin	CPPclang++18.1.3	Success	4,284
Aug 30, 2026 21:23	Josu San Martin	CPPclang++18.1.3	Success	4,272
Aug 30, 2026 21:22	Josu San Martin	CPPclang++18.1.3	Success	4,266+9.30 RP
Aug 30, 2026 21:18	Josu San Martin	CPPclang++18.1.3	Success	4,283
Aug 30, 2026 21:17	Josu San Martin	CPPclang++18.1.3	Success	4,283
Aug 30, 2026 21:16	Josu San Martin	CPPclang++18.1.3	Success	4,449
Aug 30, 2026 21:12	Josu San Martin	CPPclang++18.1.3	Success	4,357
Aug 30, 2026 21:11	Josu San Martin	CPPclang++18.1.3	Success	4,298
Aug 30, 2026 21:09	Josu San Martin	CPPclang++18.1.3	Success	4,343
Aug 30, 2026 21:08	Josu San Martin	CPPclang++18.1.3	Success	4,524
Aug 30, 2026 21:06	Josu San Martin	CPPclang++18.1.3	Success	4,490
Aug 30, 2026 21:01	Josu San Martin	CPPclang++18.1.3	Success	4,296
Aug 30, 2026 20:57	Josu San Martin	CPPclang++18.1.3	Success	4,397
Aug 30, 2026 20:44	Josu San Martin	CPPclang++18.1.3	Success	4,620
Aug 30, 2026 20:40	Josu San Martin	CPPclang++18.1.3	Success	4,287
Aug 30, 2026 20:36	Josu San Martin	CPPclang++18.1.3	Success	4,297
Aug 30, 2026 20:32	Josu San Martin	CPPclang++18.1.3	Success	4,296
Aug 30, 2026 20:31	Josu San Martin	CPPclang++18.1.3	Success	4,300
Aug 30, 2026 20:30	Josu San Martin	CPPclang++18.1.3	Success	4,284
Aug 30, 2026 20:29	Josu San Martin	CPPclang++18.1.3	Success	4,283+8.69 RP
Aug 30, 2026 20:28	Josu San Martin	CPPclang++18.1.3	Success	4,743
Aug 30, 2026 20:23	Josu San Martin	CPPclang++18.1.3	Success	4,308
Aug 30, 2026 20:17	Josu San Martin	CPPclang++18.1.3	Success	6,784
Aug 30, 2026 20:13	Josu San Martin	CPPclang++18.1.3	Success	4,299+4.32 RP
Aug 30, 2026 20:09	Josu San Martin	CPPclang++18.1.3	Success	4,312
Aug 30, 2026 20:08	Josu San Martin	CPPclang++18.1.3	Success	4,441
Aug 30, 2026 20:06	Josu San Martin	CPPclang++18.1.3	Success	6,314
Aug 30, 2026 19:59	Josu San Martin	CPPclang++18.1.3	Success	4,344
Aug 30, 2026 19:57	Josu San Martin	CPPclang++18.1.3	Success	4,494
Aug 30, 2026 19:50	Josu San Martin	CPPg++14.2.0	Success	5,157
Aug 30, 2026 19:48	Josu San Martin	CPPclang++18.1.3	Success	4,359
Aug 30, 2026 19:47	Josu San Martin	CPPclang++18.1.3	Success	4,667
Aug 30, 2026 19:46	Josu San Martin	CPPclang++18.1.3	Success	9,041
Aug 30, 2026 19:44	Josu San Martin	CPPclang++18.1.3	Success	4,310
Aug 30, 2026 19:43	Josu San Martin	CPPclang++18.1.3	Success	4,319
Aug 30, 2026 19:42	Josu San Martin	CPPclang++18.1.3	Success	4,640
Aug 30, 2026 19:41	Josu San Martin	CPPclang++18.1.3	Success	4,307+15.00 RP
Aug 30, 2026 19:38	Josu San Martin	CPPclang++20.1.2	Success	4,547
Aug 30, 2026 19:36	Josu San Martin	CPPclang++18.1.3	Success	4,839
Aug 30, 2026 19:34	Josu San Martin	CPPg++10.5.0	Success	4,629
Aug 30, 2026 19:30	Josu San Martin	CPPclang++18.1.3	Success	4,335
Aug 30, 2026 19:23	Josu San Martin	CPPclang++18.1.3	Success	4,706
Aug 30, 2026 19:19	Josu San Martin	CPPclang++18.1.3	Success	4,838

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