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 listApr 18, 2026 15:48

Yuriy Lyfenko

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Jul 6, 2026 23:46	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 6, 2026 23:46	0	42,551,040	33,577,000	1,082,000	2,117,632	expected "74600294196621100 ", got "22348441450622764 "
2	Jul 6, 2026 23:46	0	41,978,374	33,092,000	1,021,000	2,117,632	expected "74600294196621100 ", got "22348441450622764 "
3	Jul 6, 2026 23:46	0	42,021,365	33,071,000	1,049,000	2,117,632	expected "74600294196621100 ", got "22348441450622764 "
4	Apr 18, 2026 15:48	4,277	54,381,907	34,483,000	1,014,000	2,478,080
5	Apr 18, 2026 15:48	4,278	56,391,818	34,496,000	1,014,000	2,465,792
6	Apr 18, 2026 15:47	4,279	60,646,609	34,502,000	1,014,000	2,473,984
7	Apr 18, 2026 15:47	4,280	59,624,523	34,512,000	1,015,000	2,273,280
8	Apr 18, 2026 15:47	4,280	59,511,674	34,509,000	1,014,000	2,473,984
9	Apr 18, 2026 15:48	4,281	54,452,735	34,519,000	1,015,000	2,535,424
10	Apr 18, 2026 15:48	4,282	55,889,232	34,528,000	1,015,000	2,469,888
11	Apr 18, 2026 15:47	4,282	54,283,015	34,523,000	1,015,000	2,473,984
12	Apr 18, 2026 15:48	4,282	62,152,809	34,524,000	1,015,000	2,473,984
13	Apr 18, 2026 15:47	4,283	60,596,042	34,535,000	1,015,000	2,535,424
14	Apr 18, 2026 15:48	4,284	60,824,028	34,543,000	1,015,000	2,535,424
15	Apr 18, 2026 15:48	4,297	67,381,653	34,643,000	1,018,000	2,457,600
16	Apr 18, 2026 15:48	4,299	59,603,016	34,663,000	1,019,000	2,310,144
17	Apr 18, 2026 15:48	4,299	60,372,776	34,662,000	1,019,000	2,469,888
18	Apr 18, 2026 15:47	4,315	61,146,133	34,817,000	994,000	2,273,280
19	Apr 18, 2026 15:48	4,316	59,031,676	34,831,000	995,000	2,535,424
20	Apr 18, 2026 15:48	4,317	61,960,793	33,843,000	1,990,000	2,473,984
21	Apr 18, 2026 15:47	4,318	60,513,060	33,849,000	1,991,000	2,473,984
22	Apr 18, 2026 15:47	4,319	62,075,172	33,857,000	1,991,000	2,473,984
23	Apr 18, 2026 15:48	4,320	65,769,184	33,863,000	1,991,000	2,535,424
24	Apr 18, 2026 15:48	4,320	62,643,577	33,863,000	1,991,000	2,469,888
25	Apr 18, 2026 15:48	4,321	53,805,535	34,837,000	1,024,000	2,465,792
26	Apr 18, 2026 15:47	4,325	58,980,743	33,902,000	1,994,000	2,535,424
27	Apr 18, 2026 15:48	4,517	64,904,761	37,487,000	0	2,478,080

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