Fizz Buzz

Perform FizzBuzz on a stream of binary integers as fast as possible.

Input: 30 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: For each number n, print one line:

FizzBuzz if n is divisible by both 3 and 5
Fizz if n is divisible by 3
Buzz if n is divisible by 5
n as a decimal string otherwise

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 listMar 20, 2026 08:51

Dominique GarmierScore: 5,556Success

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	Mar 20, 2026 08:38	5,539	346,239,354	272,882,000	42,824,000	251,842,560
2	Mar 20, 2026 08:09	5,547	346,287,627	271,303,000	44,884,000	252,026,880
3	Mar 20, 2026 08:51	5,547	344,223,574	271,303,000	44,884,000	252,022,784
4	Mar 16, 2026 11:16	5,548	342,115,986	272,354,000	43,895,000	251,842,560
5	Mar 20, 2026 08:51	5,548	341,518,380	273,336,000	42,895,000	252,030,976
6	Mar 16, 2026 11:16	5,549	346,130,680	272,388,000	43,901,000	252,022,784
7	Mar 20, 2026 09:08	5,549	339,501,813	271,393,000	44,899,000	252,022,784
8	Mar 16, 2026 11:16	5,550	338,193,324	272,419,000	43,906,000	251,842,560
9	Mar 16, 2026 11:16	5,550	341,107,176	272,427,000	43,907,000	251,879,424
10	Mar 16, 2026 11:16	5,550	346,723,398	270,458,000	45,908,000	251,842,560
11	Mar 20, 2026 08:09	5,551	342,210,122	273,475,000	42,917,000	252,039,168
12	Mar 20, 2026 03:06	5,552	341,273,193	273,549,000	42,929,000	252,026,880
13	Mar 16, 2026 11:16	5,552	342,822,122	273,514,000	42,923,000	251,887,616
14	Mar 20, 2026 07:59	5,553	346,600,430	274,723,000	41,805,000	251,842,560
15	Mar 20, 2026 08:51	5,554	340,170,792	272,658,000	43,945,000	251,842,560
16	Mar 20, 2026 09:08	5,555	343,024,746	271,673,000	44,946,000	251,842,560
17	Mar 20, 2026 08:25	5,555	343,551,523	270,667,000	45,943,000	252,030,976
18	Mar 20, 2026 07:59	5,555	344,253,939	271,677,000	44,946,000	252,026,880
19	Mar 20, 2026 08:25	5,556	349,306,076	272,740,000	43,958,000	252,026,880
20	Mar 20, 2026 03:06	5,556	343,918,418	271,879,000	44,815,000	251,842,560
21	Mar 20, 2026 07:59	5,557	343,807,221	274,760,000	41,963,000	251,846,656
22	Mar 20, 2026 09:08	5,558	344,296,847	271,960,000	44,828,000	252,022,784
23	Mar 20, 2026 08:51	5,558	343,655,365	274,832,000	41,974,000	251,842,560
24	Mar 20, 2026 08:38	5,558	348,450,327	271,978,000	44,831,000	252,022,784
25	Mar 20, 2026 08:25	5,559	343,706,360	272,018,000	44,838,000	252,014,592
26	Mar 20, 2026 08:51	5,559	342,470,003	271,034,000	45,836,000	251,842,560
27	Mar 20, 2026 08:09	5,559	346,370,983	272,045,000	44,842,000	252,026,880
28	Mar 20, 2026 08:38	5,560	344,212,656	273,925,000	42,988,000	251,883,520
29	Mar 20, 2026 03:06	5,560	341,509,875	275,086,000	41,860,000	252,030,976
30	Mar 20, 2026 08:51	5,560	346,208,544	274,057,000	42,852,000	252,018,688
31	Mar 20, 2026 08:51	5,560	344,934,395	273,064,000	43,849,000	252,030,976
32	Mar 16, 2026 11:16	5,560	342,273,418	275,042,000	41,854,000	252,030,976
33	Mar 16, 2026 11:16	5,561	347,075,270	274,130,000	42,863,000	251,842,560
34	Mar 20, 2026 08:51	5,562	351,068,733	273,178,000	43,868,000	251,842,560
35	Mar 16, 2026 11:16	5,566	344,360,773	271,388,000	45,896,000	251,842,560
36	Mar 20, 2026 08:51	5,569	339,263,165	275,494,000	41,923,000	251,842,560

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