Median

Find the median of a stream of binary integers as fast as possible.

Input: 100 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The median value, printed as a decimal string. The median is defined as the element at index N/2 (i.e., a[50000000]) in the sorted array.

Restrictions:20s512Mb 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.

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Matt Stuchlik

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Nov 10, 2024 11:18	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
2	Nov 10, 2024 11:06	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
3	Nov 10, 2024 11:07	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
4	Nov 10, 2024 11:08	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
5	Nov 10, 2024 11:09	0	0	0	0	0	Error: expected "2116763479 ", got "2116763681 "
6	Nov 10, 2024 11:09	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
7	Nov 10, 2024 11:11	0	0	0	0	0	Error: expected "2184987155 ", got "2184987174 "
8	Nov 10, 2024 11:11	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
9	Nov 10, 2024 11:12	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
10	Nov 10, 2024 11:14	0	0	0	0	0	Error: expected "2198200682 ", got "2198200760 "
11	Nov 10, 2024 11:16	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
12	Nov 10, 2024 11:17	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
13	Nov 10, 2024 11:17	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
14	Nov 10, 2024 11:05	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
15	Nov 10, 2024 11:19	0	0	0	0	0	Error: expected "2193502825 ", got "2193502937 "
16	Nov 10, 2024 11:20	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
17	Nov 10, 2024 11:21	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
18	Nov 10, 2024 11:22	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
19	Nov 10, 2024 11:23	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
20	Nov 10, 2024 11:24	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
21	Nov 10, 2024 11:24	0	0	0	0	0	Error: expected "2232380290 ", got "2232380384 "
22	Nov 10, 2024 11:25	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
23	Nov 10, 2024 11:27	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
24	Nov 10, 2024 11:28	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
25	Nov 10, 2024 11:29	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
26	Nov 10, 2024 11:31	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
27	Nov 10, 2024 11:03	0	0	0	0	0	Error: Exit with code 1: Index out of bounds	stderr
28	Nov 10, 2024 11:01	0	0	0	0	0	Error: No answer to stdout. Died or killed?
29	Nov 10, 2024 11:32	15,624	150,592,654	119,107,000	9,008,000	2,293,760
30	Nov 10, 2024 11:32	16,461	165,505,828	126,982,000	7,998,000	2,351,104
31	Nov 10, 2024 11:32	17,098	166,034,741	129,186,000	11,015,000	2,314,240
32	Nov 10, 2024 11:32	17,795	173,105,906	137,922,000	7,995,000	2,531,328
33	Nov 10, 2024 11:32	17,957	172,372,418	138,236,000	9,015,000	2,375,680
34	Nov 10, 2024 11:32	17,978	169,228,877	137,392,000	10,028,000	2,478,080
35	Nov 10, 2024 11:32	18,355	174,057,492	142,487,000	8,027,000	2,285,568
36	Nov 10, 2024 11:32	18,361	177,165,128	140,527,000	10,037,000	2,412,544
37	Nov 10, 2024 11:32	18,404	176,171,637	144,914,000	5,996,000	2,318,336
38	Nov 10, 2024 11:04	19,920	191,256,437	154,328,000	9,019,000	2,408,448
39	Nov 10, 2024 11:04	20,269	190,636,474	160,202,000	6,007,000	2,379,776
40	Nov 10, 2024 11:02	20,467	196,371,119	159,840,000	7,992,000	2,416,640
41	Nov 10, 2024 11:04	20,469	194,397,156	161,849,000	5,994,000	2,510,848
42	Nov 10, 2024 11:04	20,495	191,027,684	151,051,000	17,005,000	2,310,144
43	Nov 10, 2024 11:04	20,984	196,941,904	156,066,000	16,006,000	2,486,272
44	Nov 10, 2024 11:04	21,927	207,848,371	172,806,000	6,992,000	2,494,464
45	Nov 10, 2024 11:04	21,930	205,974,526	170,835,000	8,991,000	2,281,472
46	Nov 10, 2024 11:04	22,125	207,121,244	170,402,000	11,026,000	2,412,544
47	Nov 10, 2024 11:04	22,743	215,155,847	178,472,000	8,021,000	2,441,216
48	Nov 10, 2024 11:02	22,956	219,098,144	179,232,000	9,011,000	2,285,568
49	Nov 10, 2024 11:02	23,630	219,951,889	184,777,000	8,989,000	2,396,160
50	Nov 10, 2024 11:02	27,780	252,457,858	207,815,000	19,982,000	2,396,160
51	Nov 10, 2024 11:02	27,831	254,596,241	223,208,000	5,004,000	2,408,448
52	Nov 10, 2024 11:02	29,922	277,739,431	231,342,000	14,020,000	2,535,424

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