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.

Back to listFeb 19, 2026 22:33

Daniel Mastalerz

Score: 5,763

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 19, 2026 21:56	5,730	78,377,934	46,544,000	1,011,000	2,265,088
2	Feb 19, 2026 21:56	5,732	74,737,975	44,540,000	3,036,000	2,330,624
3	Feb 19, 2026 23:26	5,734	74,691,796	45,566,000	2,025,000	2,310,144
4	Feb 19, 2026 22:04	5,736	74,530,987	45,582,000	2,025,000	2,269,184
5	Feb 19, 2026 21:56	5,737	81,422,693	44,577,000	3,039,000	2,265,088
6	Feb 19, 2026 21:56	5,738	79,969,270	44,586,000	3,039,000	2,330,624
7	Feb 19, 2026 21:56	5,739	72,329,025	45,606,000	2,026,000	2,277,376
8	Feb 19, 2026 22:32	5,749	73,704,697	43,743,000	3,976,000	2,310,144
9	Feb 19, 2026 22:04	5,750	78,120,453	43,748,000	3,977,000	2,293,760
10	Feb 19, 2026 21:56	5,759	74,954,668	45,806,000	1,991,000	2,269,184
11	Feb 19, 2026 22:33	5,759	77,458,896	43,819,000	3,983,000	2,330,624
12	Feb 19, 2026 22:33	5,760	77,964,494	44,817,000	2,987,000	2,265,088
13	Feb 19, 2026 23:26	5,760	76,780,677	45,814,000	1,991,000	2,326,528
14	Feb 19, 2026 22:33	5,760	78,606,335	46,816,000	996,000	2,277,376
15	Feb 19, 2026 22:32	5,760	77,942,895	43,824,000	3,984,000	2,330,624
16	Feb 19, 2026 21:56	5,761	80,948,996	44,827,000	2,988,000	2,310,144
17	Feb 19, 2026 21:56	5,761	81,070,394	45,824,000	1,992,000	2,273,280
18	Feb 19, 2026 22:32	5,762	78,350,121	43,836,000	3,985,000	2,277,376
19	Feb 19, 2026 22:32	5,763	80,561,024	45,840,000	1,993,000	2,269,184
20	Feb 19, 2026 22:04	5,763	74,660,697	43,848,000	3,986,000	2,306,048
21	Feb 19, 2026 23:26	5,764	70,601,089	43,858,000	3,987,000	2,277,376
22	Feb 19, 2026 22:32	5,767	69,311,342	43,875,000	3,988,000	2,273,280
23	Feb 19, 2026 22:04	5,811	70,783,792	44,209,000	4,019,000	2,260,992
24	Feb 19, 2026 22:32	5,815	75,116,053	44,242,000	4,022,000	2,265,088
25	Feb 19, 2026 22:33	5,824	71,278,144	44,310,000	4,028,000	2,322,432
26	Feb 19, 2026 21:56	5,832	69,818,638	44,375,000	4,034,000	2,322,432
27	Feb 19, 2026 22:04	5,840	69,455,037	45,447,000	3,029,000	2,269,184
28	Feb 19, 2026 22:04	5,844	76,697,604	45,472,000	3,031,000	2,265,088
29	Feb 19, 2026 22:32	5,846	76,502,075	46,500,000	2,021,000	2,289,664
30	Feb 19, 2026 21:56	5,847	76,840,007	45,499,000	3,033,000	2,265,088
31	Feb 19, 2026 23:26	5,848	78,051,724	45,503,000	3,033,000	2,322,432
32	Feb 19, 2026 23:26	5,850	76,101,021	45,522,000	3,034,000	2,301,952
33	Feb 19, 2026 22:32	5,850	75,197,605	46,534,000	2,023,000	2,269,184
34	Feb 19, 2026 21:56	5,855	75,417,000	44,546,000	4,049,000	2,310,144
35	Feb 19, 2026 22:33	5,876	75,381,047	44,790,000	3,981,000	2,273,280
36	Feb 19, 2026 23:26	5,880	73,995,248	45,818,000	2,988,000	2,310,144
37	Feb 19, 2026 22:33	5,881	78,144,729	45,823,000	2,988,000	2,273,280
38	Feb 19, 2026 22:32	5,886	74,836,966	45,866,000	2,991,000	2,301,952
39	Feb 19, 2026 21:56	5,908	78,109,129	46,035,000	3,002,000	2,326,528

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