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.

Back to listFeb 25, 2026 20:28

Daniel Mastalerz

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 8, 2026 20:13	Adam Folwarczny	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 8, 2026 20:13	0	54,616,901	43,904,000	1,018,000	2,113,536	expected "27617841214539459 ", got "131322149467691525"
2	Jul 8, 2026 20:13	0	54,508,371	43,774,000	1,017,000	2,113,536	expected "27617841214539459 ", got "131322149467691525"
3	Jul 8, 2026 20:13	0	54,502,188	43,771,000	1,017,000	2,113,536	expected "27617841214539459 ", got "131322149467691525"
4	Feb 26, 2026 21:22	5,363	71,183,113	42,492,000	2,023,000	2,293,760
5	Feb 26, 2026 21:22	5,365	68,234,473	41,493,000	3,036,000	2,293,760
6	Feb 25, 2026 20:19	5,366	68,279,324	42,510,000	2,024,000	2,514,944
7	Feb 25, 2026 20:20	5,368	70,719,994	42,527,000	2,025,000	2,293,760
8	Feb 25, 2026 20:19	5,369	70,553,209	42,535,000	2,025,000	2,293,760
9	Feb 26, 2026 21:22	5,371	77,533,880	42,552,000	2,026,000	2,293,760
10	Feb 25, 2026 20:28	5,372	71,200,608	42,565,000	2,026,000	2,293,760
11	Feb 26, 2026 21:22	5,376	75,101,313	42,596,000	2,028,000	2,289,664
12	Feb 26, 2026 21:22	5,378	70,852,781	42,606,000	2,028,000	2,416,640
13	Feb 26, 2026 21:22	5,380	71,744,911	42,623,000	2,029,000	2,293,760
14	Feb 25, 2026 20:20	5,391	75,921,047	41,763,000	2,983,000	2,293,760
15	Feb 26, 2026 21:22	5,401	68,990,726	42,833,000	1,992,000	2,416,640
16	Feb 25, 2026 20:20	5,435	70,323,084	43,103,000	2,004,000	2,293,760
17	Feb 25, 2026 20:28	5,437	69,368,157	43,122,000	2,005,000	2,424,832
18	Feb 26, 2026 21:22	5,440	71,993,977	42,142,000	3,010,000	2,416,640
19	Feb 25, 2026 20:19	5,443	72,981,681	43,167,000	2,007,000	2,285,568
20	Feb 26, 2026 21:22	5,451	68,540,388	42,230,000	3,016,000	2,408,448
21	Feb 25, 2026 20:28	5,452	67,924,022	43,238,000	2,011,000	2,293,760
22	Feb 25, 2026 20:20	5,474	73,021,787	44,429,000	1,009,000	2,412,544
23	Feb 25, 2026 20:19	5,474	70,015,578	44,425,000	1,009,000	2,285,568
24	Feb 25, 2026 20:28	5,476	69,815,092	44,444,000	1,010,000	2,285,568
25	Feb 25, 2026 20:19	5,478	70,592,726	43,445,000	2,020,000	2,416,640
26	Feb 25, 2026 20:19	5,478	77,258,150	43,450,000	2,020,000	2,277,376
27	Feb 25, 2026 20:20	5,493	79,407,442	43,562,000	2,026,000	2,416,640
28	Feb 25, 2026 20:20	5,515	73,110,986	43,783,000	1,990,000	2,424,832
29	Feb 25, 2026 20:28	5,551	69,351,237	44,069,000	2,003,000	2,285,568
30	Feb 25, 2026 20:28	5,557	68,386,290	43,114,000	3,007,000	2,285,568

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