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 17:30	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Jul 6, 2026 17:30	0	36,940,365	27,981,000	1,010,000	2,113,536	expected "74600294196621100 ", got "74833058524271118 "
2	Jul 6, 2026 17:30	0	36,550,099	27,727,000	1,039,000	2,113,536	expected "74600294196621100 ", got "74833064157229019 "
3	Jul 6, 2026 17:30	0	37,884,295	29,057,000	1,018,000	2,113,536	expected "74600294196621100 ", got "74535241539302970 "
4	Apr 19, 2026 06:22	3,577	58,551,751	28,670,000	1,023,000	2,490,368
5	Apr 19, 2026 06:41	3,592	55,648,069	27,823,000	1,987,000	2,277,376
6	Apr 19, 2026 06:41	3,594	59,052,730	28,836,000	994,000	2,486,272
7	Apr 19, 2026 06:48	3,595	61,677,171	27,853,000	1,989,000	2,490,368
8	Apr 19, 2026 06:22	3,595	56,936,325	27,849,000	1,989,000	2,277,376
9	Apr 19, 2026 06:22	3,595	61,228,590	27,852,000	1,989,000	2,277,376
10	Apr 19, 2026 06:41	3,595	61,808,637	27,849,000	1,989,000	2,277,376
11	Apr 19, 2026 06:20	3,596	57,659,810	28,854,000	994,000	2,498,560
12	Apr 19, 2026 06:20	3,596	58,679,469	28,850,000	994,000	2,277,376
13	Apr 19, 2026 06:20	3,596	55,221,997	28,850,000	994,000	2,277,376
14	Apr 19, 2026 06:41	3,596	60,452,031	27,858,000	1,989,000	2,277,376
15	Apr 19, 2026 06:41	3,596	54,935,820	27,854,000	1,989,000	2,490,368
16	Apr 19, 2026 06:21	3,596	56,616,918	27,858,000	1,989,000	2,494,464
17	Apr 19, 2026 06:21	3,597	57,524,334	27,867,000	1,990,000	2,490,368
18	Apr 19, 2026 06:22	3,597	62,389,149	28,860,000	995,000	2,269,184
19	Apr 19, 2026 06:48	3,597	58,527,128	27,863,000	1,990,000	2,498,560
20	Apr 19, 2026 06:20	3,598	56,817,827	27,870,000	1,990,000	2,531,328
21	Apr 19, 2026 06:22	3,598	57,206,151	27,876,000	1,991,000	2,490,368
22	Apr 19, 2026 06:21	3,598	55,437,117	27,872,000	1,990,000	2,494,464
23	Apr 19, 2026 06:21	3,598	51,005,917	28,868,000	995,000	2,277,376
24	Apr 19, 2026 06:20	3,599	53,588,069	28,842,000	1,030,000	2,494,464
25	Apr 19, 2026 06:41	3,599	54,210,787	27,881,000	1,991,000	2,494,464
26	Apr 19, 2026 06:21	3,600	49,990,386	27,891,000	1,992,000	2,277,376
27	Apr 19, 2026 06:41	3,601	56,169,674	27,896,000	1,992,000	2,277,376
28	Apr 19, 2026 06:21	3,601	56,598,200	27,894,000	1,992,000	2,498,560
29	Apr 19, 2026 06:20	3,605	66,310,641	27,928,000	1,994,000	2,531,328
30	Apr 19, 2026 06:21	3,609	50,082,066	27,959,000	1,997,000	2,494,464
31	Apr 19, 2026 06:20	3,614	56,693,541	27,999,000	1,999,000	2,486,272
32	Apr 19, 2026 06:22	3,616	54,593,094	28,012,000	2,000,000	2,277,376
33	Apr 19, 2026 06:41	3,619	51,451,221	28,036,000	2,002,000	2,494,464
34	Apr 19, 2026 06:22	3,621	52,150,391	28,053,000	2,003,000	2,498,560
35	Apr 19, 2026 06:48	3,627	57,392,803	29,099,000	1,003,000	2,277,376
36	Apr 19, 2026 06:41	3,631	54,308,437	28,130,000	2,009,000	2,277,376
37	Apr 19, 2026 06:20	3,632	50,531,318	28,134,000	2,009,000	2,277,376
38	Apr 19, 2026 06:22	3,654	52,318,414	29,319,000	1,011,000	2,482,176
39	Apr 19, 2026 06:21	3,667	55,844,699	29,419,000	1,014,000	2,498,560
40	Apr 19, 2026 06:17	3,667	56,169,850	29,426,000	1,014,000	2,531,328
41	Apr 19, 2026 06:21	3,670	55,262,476	29,450,000	1,015,000	2,486,272
42	Apr 19, 2026 06:17	3,675	62,547,864	29,485,000	1,016,000	2,494,464
43	Apr 19, 2026 06:18	3,676	55,334,026	29,493,000	1,017,000	2,494,464
44	Apr 19, 2026 06:18	3,681	54,577,946	29,535,000	1,018,000	2,478,080
45	Apr 19, 2026 06:20	3,715	59,543,331	28,848,000	1,989,000	2,277,376
46	Apr 19, 2026 06:17	3,729	54,805,535	28,953,000	1,996,000	2,494,464
47	Apr 19, 2026 06:18	3,739	50,034,059	29,035,000	2,002,000	2,269,184
48	Apr 19, 2026 06:17	3,760	57,460,007	29,196,000	2,013,000	2,498,560
49	Apr 19, 2026 06:21	3,772	54,781,317	30,295,000	1,009,000	2,277,376
50	Apr 19, 2026 06:21	3,785	57,967,382	30,400,000	1,013,000	2,273,280
51	Apr 19, 2026 06:21	3,794	54,113,048	30,475,000	1,015,000	2,486,272
52	Apr 19, 2026 06:22	3,798	55,719,068	30,510,000	1,017,000	2,531,328
53	Apr 19, 2026 06:17	3,800	59,215,659	30,523,000	1,017,000	2,494,464
54	Apr 19, 2026 06:17	3,878	51,337,850	30,175,000	2,011,000	2,531,328

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