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 16, 2026 04:19	Kevin Heavey	RUSTrust-1.95.0	Success	3,702
Jul 16, 2026 04:01	Kevin Heavey	RUSTrust-1.95.0	Success	5,479
Jul 16, 2026 03:51	Kevin Heavey	RUSTrust-1.95.0	Success	3,972
Jul 15, 2026 18:40	boop34	CPPg++14.2.0	Success	8,988
Jul 15, 2026 18:37	boop34	CPPg++14.2.0	Success	8,969+8.27 RP
Jul 15, 2026 18:31	boop34	CPPg++14.2.0	Success	9,297
Jul 15, 2026 18:27	boop34	CPPg++14.2.0	Success	9,240
Jul 15, 2026 18:25	boop34	CPPg++14.2.0	Error
Jul 15, 2026 18:23	boop34	CPPg++14.2.0	Success	9,468
Jul 15, 2026 18:14	boop34	CPPg++14.2.0	Success	11,280
Jul 15, 2026 16:26	boop34	CPPg++14.2.0	Success	9,043
Jul 15, 2026 14:51	Jarry Xiao	RUSTrust-1.95.0	Success	11,720
Jul 15, 2026 11:47	boop34	CPPg++14.2.0	Success	9,036+336.21 RP
Jul 15, 2026 11:11	boop34	CPPg++14.2.0	Success	14,242
Jul 15, 2026 11:09	boop34	CPPg++14.2.0	Success	14,439
Jul 15, 2026 10:39	boop34	CPPg++14.2.0	Error
Jul 15, 2026 10:34	boop34	CPPg++14.2.0	Success	13,600
Jul 15, 2026 08:42	boop34	CPPg++14.2.0	Success	12,979+29.84 RP
Jul 15, 2026 08:39	Andrew Tsibin	RUSTrust-1.95.0	Success	4,404+248.42 RP
Jul 15, 2026 04:37	Victor Mercklé	CPPg++14.2.0	Success	34,272
Jul 15, 2026 04:30	Victor Mercklé	CPPg++14.2.0	Success	18,379
Jul 15, 2026 04:24	Victor Mercklé	CPPg++14.2.0	Success	4,098
Jul 15, 2026 02:01	Kevin Heavey	RUSTrust-1.95.0	Success	3,706
Jul 15, 2026 01:57	Kevin Heavey	RUSTrust-1.95.0	Success	3,727
Jul 15, 2026 01:55	Kevin Heavey	RUSTrust-1.95.0	Success	3,918
Jul 15, 2026 01:41	Kevin Heavey	RUSTrust-1.95.0	Success	3,867
Jul 15, 2026 01:20	Kevin Heavey	RUSTrust-1.95.0	Success	3,750
Jul 15, 2026 01:14	Kevin Heavey	RUSTrust-1.95.0	Success	3,721
Jul 15, 2026 01:11	Kevin Heavey	RUSTrust-1.95.0	Success	3,774
Jul 15, 2026 00:58	Kevin Heavey	RUSTrust-1.95.0	Success	3,793
Jul 15, 2026 00:32	Kevin Heavey	RUSTrust-1.95.0	Success	3,755
Jul 15, 2026 00:29	boop34	CPPg++14.2.0	Error
Jul 15, 2026 00:27	boop34	CPPg++14.2.0	Error
Jul 15, 2026 00:26	boop34	CPPg++14.2.0	Error
Jul 15, 2026 00:18	boop34	CPPg++14.2.0	Success	16,905
Jul 15, 2026 00:11	Andrew Tsibin	RUSTrust-1.95.0	Success	4,981
Jul 14, 2026 23:53	Kevin Heavey	RUSTrust-1.95.0	Success	3,740
Jul 14, 2026 23:45	Kevin Heavey	RUSTrust-1.95.0	Success	3,698
Jul 14, 2026 23:41	Kevin Heavey	RUSTrust-1.95.0	Success	3,871
Jul 14, 2026 23:37	Kevin Heavey	RUSTrust-1.95.0	Success	3,702
Jul 14, 2026 23:36	Andrew Tsibin	RUSTrust-1.95.0	Success	5,148
Jul 14, 2026 23:36	Andrew Tsibin	RUSTrust-1.95.0	Success	5,174
Jul 14, 2026 23:35	Andrew Tsibin	RUSTrust-1.95.0	Success	5,178
Jul 14, 2026 23:26	Andrew Tsibin	RUSTrust-1.95.0	Success	5,028
Jul 14, 2026 23:25	Andrew Tsibin	RUSTrust-1.95.0	Success	5,093
Jul 14, 2026 23:25	Andrew Tsibin	RUSTrust-1.95.0	Success	4,945+3.27 RP
Jul 14, 2026 23:24	Andrew Tsibin	RUSTrust-1.95.0	Success	5,482
Jul 14, 2026 23:16	Andrew Tsibin	RUSTrust-1.95.0	Success	5,061
Jul 14, 2026 23:15	Kevin Heavey	RUSTrust-1.95.0	Success	3,799
Jul 14, 2026 23:07	Andrew Tsibin	RUSTrust-1.95.0	Error
Jul 14, 2026 22:54	Kevin Heavey	RUSTrust-1.95.0	Success	3,950
Jul 14, 2026 22:36	Kevin Heavey	RUSTrust-1.97.0	Success	3,709
Jul 14, 2026 22:33	Kevin Heavey	RUSTrust-1.95.0	Success	3,736
Jul 14, 2026 21:31	Kevin Heavey	RUSTrust-1.95.0	Success	3,711
Jul 14, 2026 21:26	Kevin Heavey	RUSTrust-1.95.0	Success	3,904
Jul 14, 2026 21:22	Kevin Heavey	RUSTrust-1.95.0	Success	3,710
Jul 14, 2026 21:17	Kevin Heavey	RUSTrust-1.95.0	Success	3,777
Jul 14, 2026 21:14	Kevin Heavey	RUSTrust-1.95.0	Success	3,763
Jul 14, 2026 21:13	boop34	CPPg++14.2.0	Error
Jul 14, 2026 21:12	boop34	CPPg++14.2.0	Error
Jul 14, 2026 21:11	boop34	CPPg++14.2.0	Success	13,548
Jul 14, 2026 21:10	boop34	CPPg++14.2.0	Success	13,506
Jul 14, 2026 21:08	Kevin Heavey	RUSTrust-1.95.0	Success	3,741
Jul 14, 2026 21:02	Kevin Heavey	RUSTrust-1.95.0	Success	3,711
Jul 14, 2026 21:02	boop34	CPPg++14.2.0	Success	15,291
Jul 14, 2026 21:01	Kevin Heavey	RUSTrust-1.95.0	Success	3,703
Jul 14, 2026 21:00	boop34	CPPg++14.2.0	Success	14,189
Jul 14, 2026 20:58	boop34	CPPg++14.2.0	Success	14,619
Jul 14, 2026 20:50	Kevin Heavey	RUSTrust-1.95.0	Success	3,774
Jul 14, 2026 20:45	Kevin Heavey	RUSTrust-1.95.0	Success	3,710
Jul 14, 2026 20:37	Kevin Heavey	RUSTrust-1.95.0	Success	3,711
Jul 14, 2026 20:32	Kevin Heavey	RUSTrust-1.95.0	Success	3,708
Jul 14, 2026 20:28	Kevin Heavey	RUSTrust-1.95.0	Success	16,172
Jul 14, 2026 20:19	Kevin Heavey	RUSTrust-1.95.0	Success	3,765
Jul 14, 2026 20:16	boop34	CPPg++14.2.0	Success	13,502+1.64 RP
Jul 14, 2026 20:15	boop34	CPPg++14.2.0	Error
Jul 14, 2026 20:13	boop34	CPPg++14.2.0	Error
Jul 14, 2026 20:12	boop34	CPPg++14.2.0	Success	13,532+28.21 RP
Jul 14, 2026 20:06	Kevin Heavey	RUSTrust-1.95.0	Success	3,778
Jul 14, 2026 20:00	boop34	CPPg++14.2.0	Success	14,069+196.88 RP
Jul 14, 2026 17:53	Andrew Tsibin	RUSTrust-1.95.0	Error	+1'529.93 RP
Jul 14, 2026 16:38	Kevin Heavey	RUSTrust-1.95.0	Success	3,721
Jul 14, 2026 15:48	boop34	CPPg++14.2.0	Success	19,867
Jul 14, 2026 15:28	Andrew Tsibin	RUSTrust-1.95.0	Success	20,448+489.05 RP
Jul 14, 2026 15:16	boop34	CPPg++14.2.0	Success	51,136
Jul 14, 2026 14:21	Jarry Xiao	RUSTrust-1.95.0	Success	11,291
Jul 14, 2026 13:55	boop34	CPPg++14.2.0	Success	19,847
Jul 14, 2026 13:44	boop34	CPPg++14.2.0	Success	20,154
Jul 14, 2026 13:04	Катун	CPPg++10.5.0	Success	27,966+235.28 RP
Jul 14, 2026 02:10	Kevin Heavey	RUSTrust-1.95.0	Error	+36.89 RP
Jul 14, 2026 02:03	Kevin Heavey	RUSTrust-1.95.0	Success	3,744+36.84 RP
Jul 14, 2026 01:32	Jarry Xiao	RUSTrust-1.95.0	Success	11,246+52.24 RP
Jul 14, 2026 01:15	Jarry Xiao	RUSTrust-1.95.0	Success	12,996
Jul 14, 2026 00:44	Jarry Xiao	RUSTrust-1.95.0	Success	11,948+1.61 RP
Jul 14, 2026 00:30	Jarry Xiao	RUSTrust-1.95.0	Success	11,986
Jul 14, 2026 00:15	boop34	CPPg++14.2.0	Success	19,847
Jul 14, 2026 00:12	boop34	CPPg++14.2.0	Success	19,851
Jul 14, 2026 00:10	boop34	CPPg++14.2.0	Error
Jul 14, 2026 00:08	boop34	CPPg++14.2.0	Error
Jul 14, 2026 00:07	boop34	CPPg++14.2.0	Error

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