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.

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 6, 2026 17:41	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 6, 2026 17:41	0	39,219,804	30,193,000	1,023,000	2,113,536	expected "74600294196621100 ", got "74535530140912730 "
2	Jul 6, 2026 17:41	0	37,263,218	28,253,000	1,068,000	2,113,536	expected "74600294196621100 ", got "74534439506186820 "
3	Jul 6, 2026 17:41	0	39,007,453	30,008,000	1,029,000	2,113,536	expected "74600294196621100 ", got "74535241376924970 "
4	Apr 19, 2026 04:15	3,688	56,669,646	29,589,000	1,020,000	2,531,328
5	Apr 19, 2026 04:25	3,690	55,643,361	29,607,000	1,020,000	2,269,184
6	Apr 19, 2026 04:25	3,691	56,739,350	29,614,000	1,021,000	2,531,328
7	Apr 19, 2026 04:25	3,692	54,001,354	29,625,000	1,021,000	2,494,464
8	Apr 19, 2026 04:25	3,692	57,121,800	29,623,000	1,021,000	2,498,560
9	Apr 19, 2026 04:15	3,693	58,863,431	29,632,000	1,021,000	2,498,560
10	Apr 19, 2026 04:17	3,700	57,529,768	29,687,000	1,023,000	2,494,464
11	Apr 19, 2026 04:25	3,714	57,874,892	29,833,000	994,000	2,531,328
12	Apr 19, 2026 04:25	3,714	53,092,858	28,836,000	1,988,000	2,531,328
13	Apr 19, 2026 04:15	3,715	57,756,124	29,844,000	994,000	2,269,184
14	Apr 19, 2026 04:25	3,715	55,699,133	28,844,000	1,989,000	2,486,272
15	Apr 19, 2026 04:17	3,716	53,541,959	28,854,000	1,989,000	2,494,464
16	Apr 19, 2026 04:15	3,716	57,711,704	28,856,000	1,990,000	2,490,368
17	Apr 19, 2026 04:25	3,716	56,381,785	28,853,000	1,989,000	2,531,328
18	Apr 19, 2026 04:17	3,717	54,602,905	29,853,000	995,000	2,498,560
19	Apr 19, 2026 04:25	3,718	56,718,546	28,867,000	1,990,000	2,531,328
20	Apr 19, 2026 04:15	3,719	58,030,750	28,876,000	1,991,000	2,498,560
21	Apr 19, 2026 04:17	3,721	55,263,861	28,893,000	1,992,000	2,494,464
22	Apr 19, 2026 04:17	3,733	57,225,656	28,986,000	1,999,000	2,494,464
23	Apr 19, 2026 04:25	3,734	54,083,473	28,992,000	1,999,000	2,494,464
24	Apr 19, 2026 04:15	3,740	54,427,266	29,038,000	2,002,000	2,498,560
25	Apr 19, 2026 04:25	3,744	51,294,749	29,071,000	2,004,000	2,531,328
26	Apr 19, 2026 04:15	3,747	54,129,168	29,096,000	2,006,000	2,502,656
27	Apr 19, 2026 04:15	3,753	54,880,852	29,142,000	2,009,000	2,531,328
28	Apr 19, 2026 04:25	3,785	59,111,881	30,405,000	1,013,000	2,531,328
29	Apr 19, 2026 04:17	3,841	53,161,399	29,890,000	1,992,000	2,269,184
30	Apr 19, 2026 04:15	3,877	59,441,700	31,172,000	1,005,000	2,531,328

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