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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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 6, 2026 18:09	4,316	64,222,133	33,835,000	1,990,000	2,273,280
2	Mar 6, 2026 17:58	4,317	59,675,315	34,836,000	995,000	2,490,368
3	Mar 6, 2026 17:56	4,321	61,428,486	33,876,000	1,992,000	2,273,280
4	Mar 6, 2026 18:02	4,328	60,619,861	33,929,000	1,995,000	2,273,280
5	Mar 6, 2026 18:09	4,331	59,762,234	33,953,000	1,997,000	2,273,280
6	Mar 6, 2026 17:58	4,337	56,958,318	34,001,000	2,000,000	2,273,280
7	Mar 6, 2026 17:58	4,342	53,193,434	34,036,000	2,002,000	2,531,328
8	Mar 6, 2026 17:58	4,343	58,768,886	34,049,000	2,002,000	2,498,560
9	Mar 6, 2026 18:09	4,343	59,579,833	34,048,000	2,002,000	2,273,280
10	Mar 6, 2026 18:10	4,346	56,763,719	34,070,000	2,004,000	2,273,280
11	Mar 6, 2026 18:10	4,348	61,155,157	34,085,000	2,005,000	2,502,656
12	Mar 6, 2026 18:10	4,350	55,290,012	34,103,000	2,006,000	2,527,232
13	Mar 6, 2026 18:10	4,354	55,600,619	34,128,000	2,007,000	2,490,368
14	Mar 6, 2026 17:58	4,354	60,674,812	34,133,000	2,007,000	2,273,280
15	Mar 6, 2026 18:10	4,355	57,754,215	34,138,000	2,008,000	2,502,656
16	Mar 6, 2026 18:10	4,355	59,693,215	34,141,000	2,008,000	2,494,464
17	Mar 6, 2026 17:58	4,359	60,679,084	34,170,000	2,010,000	2,273,280
18	Mar 6, 2026 18:09	4,360	57,310,117	34,182,000	2,010,000	2,490,368
19	Mar 6, 2026 17:58	4,360	57,869,827	34,178,000	2,010,000	2,273,280
20	Mar 6, 2026 17:58	4,365	58,665,686	35,223,000	1,006,000	2,273,280
21	Mar 6, 2026 18:09	4,373	56,797,857	35,285,000	1,008,000	2,494,464
22	Mar 6, 2026 18:10	4,376	55,304,899	35,314,000	1,008,000	2,273,280
23	Mar 6, 2026 18:09	4,378	59,241,254	34,318,000	2,018,000	2,494,464
24	Mar 6, 2026 18:10	4,380	61,069,738	35,348,000	1,009,000	2,502,656
25	Mar 6, 2026 18:10	4,381	57,910,821	35,355,000	1,010,000	2,486,272
26	Mar 6, 2026 18:02	4,383	59,272,184	35,369,000	1,010,000	2,273,280
27	Mar 6, 2026 17:58	4,383	59,322,755	35,369,000	1,010,000	2,494,464
28	Mar 6, 2026 17:56	4,383	62,116,346	35,373,000	1,010,000	2,490,368
29	Mar 6, 2026 17:56	4,384	60,334,679	35,376,000	1,010,000	2,273,280
30	Mar 6, 2026 18:02	4,391	61,234,103	35,431,000	1,012,000	2,273,280
31	Mar 6, 2026 18:09	4,420	64,920,367	35,665,000	1,019,000	2,486,272
32	Mar 6, 2026 18:09	4,472	71,293,196	35,110,000	2,006,000	2,486,272
33	Mar 6, 2026 18:09	4,809	61,169,290	37,916,000	1,995,000	2,531,328

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