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.

Back to listFeb 24, 2026 18:53

Daniel Mastalerz

Score: 5,560

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 24, 2026 18:43	5,480	73,576,583	42,452,000	3,032,000	2,310,144
2	Feb 24, 2026 19:17	5,484	65,377,189	43,498,000	2,023,000	2,326,528
3	Feb 24, 2026 18:53	5,487	73,415,754	42,505,000	3,036,000	2,523,136
4	Feb 24, 2026 18:43	5,488	70,145,185	42,514,000	3,036,000	2,326,528
5	Feb 24, 2026 19:17	5,490	70,821,769	42,530,000	3,037,000	2,265,088
6	Feb 24, 2026 18:54	5,491	74,062,753	42,535,000	3,038,000	2,523,136
7	Feb 24, 2026 18:56	5,501	77,217,146	42,616,000	3,044,000	2,363,392
8	Feb 24, 2026 19:17	5,501	75,215,098	42,615,000	3,043,000	2,326,528
9	Feb 24, 2026 18:53	5,503	72,525,972	43,643,000	2,029,000	2,326,528
10	Feb 24, 2026 18:43	5,515	76,207,479	41,791,000	3,980,000	2,314,240
11	Feb 24, 2026 18:56	5,517	72,180,570	43,797,000	1,990,000	2,314,240
12	Feb 24, 2026 18:54	5,519	76,708,523	42,824,000	2,987,000	2,314,240
13	Feb 24, 2026 18:53	5,521	70,410,223	41,841,000	3,984,000	2,265,088
14	Feb 24, 2026 18:56	5,521	75,467,055	41,837,000	3,984,000	2,514,944
15	Feb 24, 2026 18:54	5,522	77,250,717	41,848,000	3,985,000	2,265,088
16	Feb 24, 2026 19:17	5,560	68,309,453	42,139,000	4,013,000	2,514,944
17	Feb 24, 2026 18:43	5,563	70,351,681	42,159,000	4,015,000	2,514,944
18	Feb 24, 2026 18:56	5,572	69,640,250	42,228,000	4,021,000	2,318,336
19	Feb 24, 2026 18:54	5,572	66,663,196	42,225,000	4,021,000	2,363,392
20	Feb 24, 2026 18:56	5,580	69,794,862	43,293,000	3,020,000	2,306,048
21	Feb 24, 2026 18:54	5,581	69,220,027	42,294,000	4,028,000	2,318,336
22	Feb 24, 2026 18:54	5,584	68,694,275	42,316,000	4,030,000	2,285,568
23	Feb 24, 2026 18:53	5,585	74,045,850	42,322,000	4,030,000	2,318,336
24	Feb 24, 2026 18:43	5,587	72,759,112	44,353,000	2,016,000	2,514,944
25	Feb 24, 2026 19:17	5,589	75,407,243	43,361,000	3,025,000	2,285,568
26	Feb 24, 2026 18:43	5,589	73,081,670	43,362,000	3,025,000	2,318,336
27	Feb 24, 2026 18:53	5,604	73,915,003	42,466,000	4,044,000	2,318,336
28	Feb 24, 2026 18:56	5,617	79,115,965	43,583,000	3,040,000	2,260,992
29	Feb 24, 2026 18:53	5,620	74,696,502	43,605,000	3,042,000	2,318,336
30	Feb 24, 2026 19:17	5,622	75,167,249	44,631,000	2,028,000	2,318,336

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