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.

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olliecrow

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Jan 31, 2026 14:57	6,848	83,121,715	55,843,000	997,000	2,441,216
2	Jan 31, 2026 15:07	6,880	84,237,897	55,100,000	2,003,000	2,363,392
3	Jan 31, 2026 15:07	6,892	90,379,987	54,194,000	3,010,000	2,420,736
4	Jan 31, 2026 15:07	6,896	80,219,718	55,228,000	2,008,000	2,428,928
5	Jan 31, 2026 15:07	6,896	80,285,526	55,232,000	2,008,000	2,355,200
6	Jan 31, 2026 14:57	6,897	85,146,123	53,229,000	4,017,000	2,383,872
7	Jan 31, 2026 15:07	6,901	83,369,093	54,267,000	3,014,000	2,400,256
8	Jan 31, 2026 15:07	6,906	83,832,806	55,308,000	2,011,000	2,428,928
9	Jan 31, 2026 14:57	6,918	79,993,591	56,411,000	1,007,000	2,408,448
10	Jan 31, 2026 15:07	6,924	80,535,470	55,452,000	2,016,000	2,387,968
11	Jan 31, 2026 15:07	6,977	86,676,038	55,909,000	1,996,000	2,297,856
12	Jan 31, 2026 15:07	7,011	85,120,533	56,185,000	2,006,000	2,498,560
13	Jan 31, 2026 15:07	7,171	85,585,044	55,481,000	4,035,000	2,449,408
14	Jan 31, 2026 14:57	7,198	85,420,996	55,763,000	3,983,000	2,289,664
15	Jan 31, 2026 15:07	7,216	81,028,636	54,899,000	4,990,000	2,494,464
16	Jan 31, 2026 14:57	7,269	88,903,932	56,311,000	4,022,000	2,519,040
17	Jan 31, 2026 15:07	7,271	85,755,698	57,331,000	3,017,000	2,342,912
18	Jan 31, 2026 15:07	7,272	89,903,640	55,331,000	5,030,000	2,277,376
19	Jan 31, 2026 15:07	7,278	83,868,080	59,401,000	1,006,000	2,383,872
20	Jan 31, 2026 15:07	7,283	87,285,249	57,429,000	3,022,000	2,338,816
21	Jan 31, 2026 14:57	7,291	88,754,582	57,488,000	3,025,000	2,383,872
22	Jan 31, 2026 15:07	7,293	91,983,755	59,526,000	1,008,000	2,314,240
23	Jan 31, 2026 15:07	7,294	89,585,935	56,507,000	4,036,000	2,457,600
24	Jan 31, 2026 15:07	7,385	87,986,417	57,278,000	4,019,000	2,506,752
25	Jan 31, 2026 15:07	8,435	96,902,702	66,012,000	4,000,000	2,445,312
26	Jan 31, 2026 15:07	8,525	99,149,958	66,773,000	3,986,000	2,265,088
27	Jan 31, 2026 15:07	8,540	92,011,595	67,884,000	2,994,000	2,285,568
28	Jan 31, 2026 15:07	8,696	103,561,450	68,169,000	4,009,000	2,301,952
29	Jan 31, 2026 15:07	8,707	100,766,488	68,252,000	4,014,000	2,322,432
30	Jan 31, 2026 15:07	8,728	92,336,858	70,431,000	2,012,000	2,285,568
31	Jan 31, 2026 15:07	8,820	98,622,562	69,196,000	4,011,000	2,392,064
32	Jan 31, 2026 15:07	8,912	101,448,103	69,971,000	3,998,000	2,498,560
33	Jan 31, 2026 15:07	9,073	98,101,070	72,294,000	3,012,000	2,379,776
34	Jan 31, 2026 15:07	9,434	107,295,422	77,300,000	1,003,000	2,383,872
35	Jan 31, 2026 15:07	9,494	105,354,172	75,808,000	2,992,000	2,441,216
36	Jan 31, 2026 15:07	9,581	112,661,996	77,507,000	2,013,000	2,322,432

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