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 listDec 6, 2025 16:25

Rajarshi Basu

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 14:27	M-Rochat	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	May 17, 2026 15:16	0	33,154,947	21,756,000	1,032,000	2,113,536	expected "11318049299365247 ", got "81694153673477440 "
2	May 17, 2026 15:16	0	34,981,151	21,836,000	1,035,000	2,113,536	expected "11318049299365247 ", got "81694153673477440 "
3	May 17, 2026 15:16	0	35,092,340	21,158,000	1,033,000	2,113,536	expected "11318049299365247 ", got "81694153673477440 "
4	Dec 6, 2025 16:26	5,895	73,017,957	45,935,000	2,995,000	2,273,280
5	Dec 6, 2025 16:26	5,895	75,049,672	45,932,000	2,995,000	2,289,664
6	Dec 6, 2025 16:25	5,896	70,106,523	46,938,000	1,997,000	2,404,352
7	Dec 6, 2025 16:26	5,901	75,702,050	45,978,000	2,998,000	2,277,376
8	Dec 6, 2025 16:24	5,905	70,586,875	46,011,000	3,000,000	2,289,664
9	Dec 6, 2025 16:24	5,907	74,657,946	46,026,000	3,001,000	2,285,568
10	Dec 6, 2025 16:24	5,907	76,388,452	46,029,000	3,001,000	2,289,664
11	Dec 6, 2025 16:25	5,910	75,072,576	46,048,000	3,003,000	2,277,376
12	Dec 6, 2025 16:26	5,911	71,869,514	47,059,000	2,002,000	2,293,760
13	Dec 6, 2025 16:26	5,915	71,437,308	46,090,000	3,005,000	2,277,376
14	Dec 6, 2025 16:25	5,917	74,443,365	48,111,000	1,002,000	2,289,664
15	Dec 6, 2025 16:24	5,917	72,447,460	47,108,000	2,004,000	2,289,664
16	Dec 6, 2025 16:24	5,922	81,368,390	47,150,000	2,006,000	2,289,664
17	Dec 6, 2025 16:26	5,923	74,530,630	47,153,000	2,006,000	2,277,376
18	Dec 6, 2025 16:26	5,923	74,831,577	47,154,000	2,006,000	2,289,664
19	Dec 6, 2025 16:26	5,927	76,490,689	46,182,000	3,011,000	2,289,664
20	Dec 6, 2025 16:24	5,935	71,476,120	46,248,000	3,016,000	2,269,184
21	Dec 6, 2025 16:26	5,950	70,842,201	46,362,000	3,023,000	2,297,856
22	Dec 6, 2025 16:24	5,958	78,206,490	47,435,000	2,018,000	2,273,280
23	Dec 6, 2025 16:24	5,967	72,640,927	47,502,000	2,021,000	2,289,664
24	Dec 6, 2025 16:24	5,968	70,820,269	47,510,000	2,021,000	2,289,664
25	Dec 6, 2025 16:26	6,031	76,083,837	47,054,000	3,003,000	2,281,472
26	Dec 6, 2025 16:24	6,039	74,115,926	47,118,000	3,007,000	2,293,760
27	Dec 6, 2025 16:26	6,044	72,830,874	47,155,000	3,009,000	2,273,280
28	Dec 6, 2025 16:24	6,050	72,307,450	48,209,000	2,008,000	2,277,376
29	Dec 6, 2025 16:24	6,050	79,391,992	48,205,000	2,008,000	2,273,280
30	Dec 6, 2025 16:25	6,051	73,788,205	47,207,000	3,013,000	2,297,856
31	Dec 6, 2025 16:25	6,056	70,950,196	47,247,000	3,015,000	2,293,760
32	Dec 6, 2025 16:25	6,056	73,393,586	47,252,000	3,016,000	2,289,664
33	Dec 6, 2025 16:26	6,056	73,260,079	47,252,000	3,016,000	2,281,472

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