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
Jul 5, 2026 12:39	Kevin Heavey	RUSTrust-1.95.0	Success	20,606+5.75 RP
Jul 5, 2026 12:38	Teow Hua Jun	CPPg++10.5.0	Error
Jul 5, 2026 11:54	Kevin Heavey	RUSTrust-1.96.0	Success	22,135
Jul 5, 2026 11:54	Teow Hua Jun	CPPg++10.5.0	Success	13,886+720.15 RP
Jul 5, 2026 11:40	Kevin Heavey	RUSTrust-1.95.0	Success	20,853+267.35 RP
Jul 4, 2026 22:51	Joshua Montross	CPPg++10.5.0	Success	22,889+157.71 RP
Jul 4, 2026 12:40	Joel Chong	CPPg++10.5.0	Success	62,030
Jul 4, 2026 12:38	Joel Chong	CPPg++10.5.0	Success	62,083
Jul 4, 2026 12:37	Joel Chong	CPPg++10.5.0	Success	62,231
Jul 4, 2026 12:36	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:35	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:35	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:34	Joel Chong	CPPg++14.2.0	Error
Jul 4, 2026 12:33	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:31	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:30	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:28	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 12:25	Joel Chong	CPPg++10.5.0	Error
Jul 4, 2026 07:32	ddfkit	CPPg++10.5.0	Success	89,098+112.24 RP
Jul 4, 2026 01:19	Josu San Martin	CPPg++14.2.0	Success	5,252
Jul 4, 2026 01:17	Josu San Martin	CPPg++14.2.0	Success	5,725
Jul 4, 2026 01:13	Josu San Martin	CPPg++14.2.0	Success	5,391
Jul 4, 2026 01:09	Josu San Martin	CPPg++14.2.0	Success	5,333
Jul 4, 2026 01:06	Josu San Martin	CPPclang++20.1.2	Success	5,499
Jul 4, 2026 01:04	Josu San Martin	CPPg++14.2.0	Success	5,230
Jul 4, 2026 01:02	Josu San Martin	CPPg++14.2.0	Success	5,205
Jul 4, 2026 00:59	Josu San Martin	CPPg++14.2.0	Success	5,203
Jul 4, 2026 00:57	Josu San Martin	CPPg++14.2.0	Success	10,181
Jul 4, 2026 00:54	Josu San Martin	CPPg++14.2.0	Success	5,265
Jul 4, 2026 00:51	Josu San Martin	CPPg++14.2.0	Success	5,970
Jul 4, 2026 00:49	Josu San Martin	CPPg++14.2.0	Success	5,334
Jul 4, 2026 00:47	Josu San Martin	CPPg++14.2.0	Success	5,172
Jul 4, 2026 00:45	Josu San Martin	CPPg++14.2.0	Success	5,550
Jul 4, 2026 00:43	Josu San Martin	CPPg++14.2.0	Success	5,381
Jul 4, 2026 00:40	Josu San Martin	CPPg++14.2.0	Success	6,139
Jul 4, 2026 00:38	Josu San Martin	CPPg++14.2.0	Success	9,779
Jul 4, 2026 00:35	Josu San Martin	CPPg++14.2.0	Error
Jul 4, 2026 00:33	Josu San Martin	CPPg++14.2.0	Success	6,080
Jul 4, 2026 00:31	Josu San Martin	CPPg++14.2.0	Success	6,186
Jul 4, 2026 00:27	Josu San Martin	CPPg++14.2.0	Success	6,186
Jul 4, 2026 00:25	zielaj	CPPclang++20.1.2	Error
Jul 4, 2026 00:25	Josu San Martin	CPPg++14.2.0	Success	6,243
Jul 4, 2026 00:24	zielaj	CPPclang++20.1.2	Error
Jul 4, 2026 00:23	zielaj	CPPclang++18.1.3	Success	3,320+25.30 RP
Jul 4, 2026 00:20	Josu San Martin	CPPg++14.2.0	Success	6,416
Jul 4, 2026 00:20	zielaj	CPPclang++18.1.3	Success	3,334+132.84 RP
Jul 4, 2026 00:19	zielaj	CPPclang++20.1.2	Error
Jul 4, 2026 00:17	Josu San Martin	CPPg++14.2.0	Success	8,979
Jul 4, 2026 00:16	zielaj	CPPclang++20.1.2	Success	3,454
Jul 4, 2026 00:15	Josu San Martin	CPPclang++20.1.2	Success	20,691
Jul 4, 2026 00:15	zielaj	CPPclang++20.1.2	Error
Jul 4, 2026 00:13	zielaj	CPPclang++20.1.2	Error
Jul 4, 2026 00:13	Josu San Martin	CPPg++14.2.0	Success	7,052
Jul 4, 2026 00:12	zielaj	CPPg++10.5.0	Error
Jul 4, 2026 00:10	Josu San Martin	CPPg++14.2.0	Success	7,108
Jul 4, 2026 00:07	Josu San Martin	CPPg++14.2.0	Success	7,523
Jul 4, 2026 00:05	Josu San Martin	CPPg++14.2.0	Success	15,801
Jul 4, 2026 00:00	Josu San Martin	CPPg++14.2.0	Success	7,155
Jul 3, 2026 23:59	Josu San Martin	CPPclang++20.1.2	Success	10,000
Jul 3, 2026 23:55	Josu San Martin	CPPg++14.2.0	Success	7,989
Jul 3, 2026 23:52	Josu San Martin	CPPg++14.2.0	Success	7,103
Jul 3, 2026 23:49	Josu San Martin	CPPg++14.2.0	Success	7,450
Jul 3, 2026 23:38	Josu San Martin	CPPg++14.2.0	Success	7,561
Jul 3, 2026 23:33	Josu San Martin	CPPg++14.2.0	Success	7,558
Jul 3, 2026 23:27	Josu San Martin	CPPg++14.2.0	Success	8,100
Jul 3, 2026 23:24	Josu San Martin	CPPclang++20.1.2	Success	10,216
Jul 3, 2026 22:41	Josu San Martin	CPPg++14.2.0	Success	9,493
Jul 3, 2026 22:30	Josu San Martin	CPPg++14.2.0	Success	9,389
Jul 3, 2026 22:28	Josu San Martin	CPPclang++20.1.2	Success	15,369
Jul 3, 2026 22:19	Josu San Martin	CPPg++14.2.0	Success	8,257
Jul 3, 2026 22:14	Josu San Martin	CPPg++14.2.0	Success	13,356
Jul 3, 2026 22:06	Josu San Martin	CPPg++14.2.0	Success	7,443
Jul 3, 2026 22:03	Josu San Martin	CPPclang++20.1.2	Success	18,167
Jul 3, 2026 21:44	Josu San Martin	CPPg++14.2.0	Success	22,201
Jul 3, 2026 21:38	Josu San Martin	CPPg++14.2.0	Success	25,979
Jul 3, 2026 21:05	Josu San Martin	CPPg++14.2.0	Success	8,462
Jul 3, 2026 21:02	Josu San Martin	CPPg++14.2.0	Success	6,442
Jul 3, 2026 21:01	Josu San Martin	CPPg++14.2.0	Success	22,949
Jul 3, 2026 20:57	Josu San Martin	CPPg++14.2.0	Success	8,492
Jul 3, 2026 20:55	Josu San Martin	CPPg++14.2.0	Success	6,405
Jul 3, 2026 20:51	Josu San Martin	CPPg++14.2.0	Success	18,691
Jul 3, 2026 20:48	Josu San Martin	CPPg++14.2.0	Success	8,460
Jul 3, 2026 20:46	Josu San Martin	CPPg++14.2.0	Success	6,424
Jul 3, 2026 20:42	Josu San Martin	CPPg++14.2.0	Success	8,496
Jul 3, 2026 20:36	Josu San Martin	CPPg++14.2.0	Success	8,585
Jul 3, 2026 20:33	Josu San Martin	CPPg++14.2.0	Success	39,977
Jul 3, 2026 20:31	Josu San Martin	CPPg++14.2.0	Success	6,743
Jul 3, 2026 20:28	Josu San Martin	CPPg++14.2.0	Success	12,165
Jul 3, 2026 20:24	Josu San Martin	CPPg++14.2.0	Success	6,485
Jul 3, 2026 20:21	Josu San Martin	CPPg++14.2.0	Success	8,575
Jul 3, 2026 20:17	Josu San Martin	CPPg++14.2.0	Success	16,521
Jul 3, 2026 20:14	Josu San Martin	CPPg++14.2.0	Success	15,286
Jul 3, 2026 20:12	Josu San Martin	CPPg++14.2.0	Success	13,843
Jul 3, 2026 20:08	Josu San Martin	CPPg++14.2.0	Success	6,650
Jul 3, 2026 20:05	Josu San Martin	CPPg++14.2.0	Success	10,389
Jul 3, 2026 20:02	Josu San Martin	CPPg++14.2.0	Success	6,896
Jul 3, 2026 19:58	Josu San Martin	CPPg++14.2.0	Success	15,284
Jul 3, 2026 19:55	Josu San Martin	CPPg++14.2.0	Success	14,984
Jul 3, 2026 19:53	Josu San Martin	CPPg++14.2.0	Success	6,604
Jul 3, 2026 19:50	Josu San Martin	CPPg++14.2.0	Success	15,755

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