Count uint8

Count the number of bytes equal to 127 in a binary stream as fast as possible.

Input: 250 000 000 uint8 values in binary on STDIN.

Output: The count of elements equal to 127, printed as a decimal string.

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 listMar 28, 2026 20:02

olliecrowScore: 4,359Success

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 28, 2026 20:01	4,330	31,343,665	13,857,000	0	2,502,656
2	Mar 28, 2026 20:03	4,335	34,884,974	12,881,000	990,000	2,281,472
3	Mar 28, 2026 20:04	4,336	31,593,203	12,885,000	991,000	2,498,560
4	Mar 28, 2026 20:04	4,337	28,627,832	12,887,000	991,000	2,281,472
5	Mar 28, 2026 20:05	4,338	32,039,663	12,891,000	991,000	2,281,472
6	Mar 28, 2026 20:01	4,338	43,453,133	13,882,000	0	2,494,464
7	Mar 28, 2026 20:03	4,338	39,154,664	13,881,000	0	2,498,560
8	Mar 28, 2026 20:04	4,338	39,212,869	13,883,000	0	2,490,368
9	Mar 28, 2026 20:03	4,339	26,495,895	12,894,000	991,000	2,281,472
10	Mar 28, 2026 20:05	4,340	32,730,362	12,897,000	992,000	2,494,464
11	Mar 28, 2026 20:03	4,340	26,781,982	12,896,000	992,000	2,494,464
12	Mar 28, 2026 20:03	4,340	34,763,507	12,897,000	992,000	2,498,560
13	Mar 28, 2026 20:03	4,341	49,504,489	13,891,000	0	2,281,472
14	Mar 28, 2026 20:04	4,341	45,046,212	12,898,000	992,000	2,494,464
15	Mar 28, 2026 20:04	4,342	39,790,676	13,893,000	0	2,281,472
16	Mar 28, 2026 20:02	4,342	40,037,597	12,902,000	992,000	2,494,464
17	Mar 28, 2026 20:02	4,343	29,048,843	12,904,000	992,000	2,281,472
18	Mar 28, 2026 20:04	4,343	31,309,953	13,899,000	0	2,494,464
19	Mar 28, 2026 20:03	4,343	31,850,240	12,904,000	992,000	2,281,472
20	Mar 28, 2026 20:02	4,344	31,093,477	13,901,000	0	2,502,656
21	Mar 28, 2026 20:03	4,344	37,623,275	12,908,000	992,000	2,281,472
22	Mar 28, 2026 20:03	4,345	38,384,037	12,912,000	993,000	2,281,472
23	Mar 28, 2026 20:02	4,345	29,332,720	12,912,000	993,000	2,502,656
24	Mar 28, 2026 20:04	4,345	35,816,156	12,910,000	993,000	2,498,560
25	Mar 28, 2026 20:01	4,345	28,265,834	12,911,000	993,000	2,502,656
26	Mar 28, 2026 20:03	4,346	29,073,775	12,915,000	993,000	2,486,272
27	Mar 28, 2026 20:04	4,346	29,525,843	12,913,000	993,000	2,490,368
28	Mar 28, 2026 20:04	4,346	30,530,412	12,915,000	993,000	2,498,560
29	Mar 28, 2026 20:04	4,347	33,375,209	12,916,000	993,000	2,494,464
30	Mar 28, 2026 20:02	4,348	43,193,775	12,921,000	993,000	2,506,752
31	Mar 28, 2026 20:04	4,348	41,483,126	12,919,000	993,000	2,281,472
32	Mar 28, 2026 20:05	4,349	29,071,195	13,918,000	0	2,498,560
33	Mar 28, 2026 20:01	4,351	36,557,339	11,935,000	1,989,000	2,502,656
34	Mar 28, 2026 20:01	4,351	30,029,402	12,929,000	994,000	2,281,472
35	Mar 28, 2026 20:01	4,352	31,153,222	12,931,000	994,000	2,494,464
36	Mar 28, 2026 20:04	4,353	31,259,852	11,940,000	1,990,000	2,486,272
37	Mar 28, 2026 20:02	4,353	32,924,281	11,940,000	1,990,000	2,281,472
38	Mar 28, 2026 20:02	4,354	28,903,600	12,937,000	995,000	2,281,472
39	Mar 28, 2026 20:04	4,356	30,647,404	13,939,000	0	2,502,656
40	Mar 28, 2026 20:02	4,357	34,973,749	12,946,000	995,000	2,281,472
41	Mar 28, 2026 20:03	4,357	38,752,830	12,947,000	995,000	2,494,464
42	Mar 28, 2026 20:04	4,358	35,874,500	11,952,000	1,992,000	2,486,272
43	Mar 28, 2026 20:01	4,358	32,254,796	12,951,000	996,000	2,281,472
44	Mar 28, 2026 20:02	4,359	37,854,117	12,952,000	996,000	2,494,464
45	Mar 28, 2026 20:02	4,359	29,476,615	12,953,000	996,000	2,281,472
46	Mar 28, 2026 20:03	4,359	31,757,622	12,953,000	996,000	2,498,560
47	Mar 28, 2026 20:01	4,361	33,876,994	11,963,000	1,993,000	2,498,560
48	Mar 28, 2026 20:04	4,361	26,316,406	11,962,000	1,993,000	2,281,472
49	Mar 28, 2026 20:03	4,361	32,458,045	12,958,000	996,000	2,490,368
50	Mar 28, 2026 20:03	4,362	41,273,968	11,964,000	1,994,000	2,490,368
51	Mar 28, 2026 20:04	4,362	29,827,459	12,961,000	997,000	2,281,472
52	Mar 28, 2026 20:03	4,365	43,621,656	12,970,000	997,000	2,502,656
53	Mar 28, 2026 20:01	4,365	28,772,033	11,974,000	1,995,000	2,535,424
54	Mar 28, 2026 20:04	4,365	30,046,475	12,970,000	997,000	2,281,472
55	Mar 28, 2026 20:03	4,365	37,591,601	12,972,000	997,000	2,281,472
56	Mar 28, 2026 20:02	4,366	34,248,478	12,973,000	997,000	2,498,560
57	Mar 28, 2026 20:01	4,366	29,138,230	11,976,000	1,996,000	2,281,472
58	Mar 28, 2026 20:01	4,366	37,482,706	11,975,000	1,995,000	2,498,560
59	Mar 28, 2026 20:01	4,366	30,165,862	12,973,000	997,000	2,281,472
60	Mar 28, 2026 20:02	4,367	33,633,630	12,976,000	998,000	2,490,368
61	Mar 28, 2026 20:04	4,367	41,068,145	12,975,000	998,000	2,494,464
62	Mar 28, 2026 20:04	4,367	31,627,036	12,976,000	998,000	2,490,368
63	Mar 28, 2026 20:02	4,367	29,834,188	12,975,000	998,000	2,486,272
64	Mar 28, 2026 20:02	4,367	30,125,572	12,977,000	998,000	2,281,472
65	Mar 28, 2026 20:03	4,368	31,356,264	11,982,000	1,997,000	2,277,376
66	Mar 28, 2026 20:04	4,368	34,727,010	12,979,000	998,000	2,494,464
67	Mar 28, 2026 20:02	4,368	26,686,422	12,980,000	998,000	2,281,472
68	Mar 28, 2026 20:03	4,369	27,863,769	11,985,000	1,997,000	2,281,472
69	Mar 28, 2026 20:02	4,371	33,844,713	12,987,000	999,000	2,494,464
70	Mar 28, 2026 20:03	4,371	29,978,671	12,989,000	999,000	2,498,560
71	Mar 28, 2026 20:02	4,372	30,011,353	12,991,000	999,000	2,281,472
72	Mar 28, 2026 20:03	4,373	36,802,554	12,996,000	999,000	2,486,272
73	Mar 28, 2026 20:03	4,373	27,049,524	12,996,000	999,000	2,486,272
74	Mar 28, 2026 20:01	4,373	36,705,531	12,994,000	999,000	2,281,472
75	Mar 28, 2026 20:04	4,374	41,818,205	12,999,000	999,000	2,494,464
76	Mar 28, 2026 20:04	4,374	49,613,085	12,998,000	999,000	2,281,472
77	Mar 28, 2026 20:03	4,375	31,508,509	13,000,000	1,000,000	2,486,272
78	Mar 28, 2026 20:04	4,376	28,096,014	13,003,000	1,000,000	2,486,272
79	Mar 28, 2026 20:04	4,379	30,703,088	13,013,000	1,001,000	2,494,464
80	Mar 28, 2026 20:02	4,380	35,980,287	12,015,000	2,002,000	2,535,424
81	Mar 28, 2026 20:02	4,381	31,990,968	14,019,000	0	2,281,472
82	Mar 28, 2026 20:02	4,382	31,017,947	13,020,000	1,001,000	2,281,472
83	Mar 28, 2026 20:01	4,384	33,713,584	12,026,000	2,004,000	2,490,368
84	Mar 28, 2026 20:02	4,385	29,806,548	12,029,000	2,004,000	2,535,424
85	Mar 28, 2026 20:03	4,385	32,277,869	13,031,000	1,002,000	2,281,472
86	Mar 28, 2026 20:03	4,386	36,883,956	13,034,000	1,002,000	2,535,424
87	Mar 28, 2026 20:01	4,389	28,538,548	12,038,000	2,006,000	2,498,560
88	Mar 28, 2026 20:02	4,468	37,765,321	12,257,000	2,042,000	2,281,472
89	Mar 28, 2026 20:02	4,496	33,587,427	13,359,000	1,027,000	2,498,560
90	Mar 28, 2026 20:02	4,543	27,986,353	13,500,000	1,038,000	2,281,472

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