Sum of prime numbers

Compute the sum of all prime numbers in a stream of binary integers as fast as possible.

Input: 1 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The uint64 sum of all values that are prime, printed as a decimal string.

Restrictions:30s256Mb 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 7, 2026 03:54

zielajScore: 3,392Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 6, 2026 04:33	3,324	16,743,118	2,925,000	0	2,347,008
2	Feb 6, 2026 04:30	3,342	17,173,178	1,961,000	980,000	2,347,008
3	Feb 6, 2026 04:29	3,345	20,832,669	2,944,000	0	2,351,104
4	Feb 6, 2026 04:30	3,345	18,305,514	1,963,000	981,000	2,347,008
5	Feb 6, 2026 04:30	3,352	17,839,803	1,967,000	983,000	2,347,008
6	Feb 6, 2026 04:30	3,355	19,702,233	1,968,000	984,000	2,351,104
7	Feb 7, 2026 03:47	3,356	17,154,192	1,969,000	984,000	2,347,008
8	Feb 6, 2026 04:30	3,358	19,892,597	1,970,000	985,000	2,527,232
9	Feb 6, 2026 04:29	3,358	18,641,077	1,970,000	985,000	2,347,008
10	Feb 6, 2026 04:29	3,359	19,600,839	1,971,000	985,000	2,347,008
11	Feb 6, 2026 04:33	3,361	24,794,254	1,972,000	986,000	2,342,912
12	Feb 6, 2026 04:29	3,368	16,553,562	1,976,000	988,000	2,347,008
13	Feb 6, 2026 04:28	3,369	16,458,381	1,977,000	988,000	2,347,008
14	Feb 6, 2026 04:33	3,375	24,458,259	1,980,000	990,000	2,351,104
15	Feb 7, 2026 03:47	3,376	19,958,651	1,981,000	990,000	2,342,912
16	Feb 6, 2026 05:17	3,376	18,981,545	1,981,000	990,000	2,465,792
17	Feb 6, 2026 04:28	3,378	17,352,682	1,982,000	991,000	2,351,104
18	Feb 6, 2026 04:29	3,378	21,078,252	1,982,000	991,000	2,347,008
19	Feb 6, 2026 04:30	3,390	21,223,696	1,989,000	994,000	2,277,376
20	Feb 6, 2026 04:52	3,392	19,173,248	1,990,000	995,000	2,523,136
21	Feb 6, 2026 04:30	3,433	16,050,233	2,014,000	1,007,000	2,338,816
22	Feb 7, 2026 03:20	3,438	18,225,241	2,017,000	1,008,000	2,347,008
23	Feb 6, 2026 04:29	3,453	15,276,260	1,013,000	2,026,000	2,342,912
24	Feb 6, 2026 04:52	3,457	20,980,794	2,028,000	1,014,000	2,347,008
25	Feb 6, 2026 04:29	3,461	20,326,576	1,015,000	2,031,000	2,347,008
26	Feb 6, 2026 05:17	3,461	18,692,570	1,015,000	2,031,000	2,342,912
27	Feb 7, 2026 03:54	3,467	19,369,915	1,017,000	2,034,000	2,347,008
28	Feb 7, 2026 03:20	3,472	16,963,498	2,037,000	1,018,000	2,277,376
29	Feb 7, 2026 03:54	3,474	22,195,816	2,038,000	1,019,000	2,535,424
30	Feb 7, 2026 03:20	3,491	19,790,901	2,048,000	1,024,000	2,342,912
31	Feb 7, 2026 03:54	3,502	15,916,328	2,055,000	1,027,000	2,351,104
32	Feb 6, 2026 04:30	3,502	20,879,367	2,055,000	1,027,000	2,347,008
33	Feb 6, 2026 04:29	3,506	22,848,590	2,057,000	1,028,000	2,351,104
34	Feb 6, 2026 04:29	3,525	20,686,491	2,068,000	1,034,000	2,449,408
35	Feb 6, 2026 04:28	3,823	17,272,106	2,243,000	1,121,000	2,351,104
36	Feb 6, 2026 04:30	4,170	18,867,169	2,447,000	1,223,000	2,342,912
37	Feb 7, 2026 03:47	4,223	19,854,731	3,716,000	0	2,347,008
38	Feb 6, 2026 04:52	4,228	16,819,461	2,481,000	1,240,000	2,334,720
39	Feb 6, 2026 05:17	4,291	23,256,527	3,776,000	0	2,342,912

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