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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Run Statistics

#	Date	Score	Wall Time	CPU User	Memory	Error
1	May 21, 2024 00:11	0	0	0	0	Error: No answer to stdout. Died or killed?
2	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
3	May 20, 2024 20:12	0	0	0	0	Error: expected "2203722409 ", got "0"
4	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
5	May 20, 2024 20:16	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
6	May 20, 2024 20:16	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
7	May 20, 2024 20:17	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
8	May 21, 2024 00:10	0	0	0	0	Error: expected "2196303581 ", got "0"
9	May 21, 2024 00:10	0	0	0	0	Error: No answer to stdout. Died or killed?
10	May 21, 2024 00:10	0	0	0	0	Error: No answer to stdout. Died or killed?
11	May 21, 2024 00:10	0	0	0	0	Error: No answer to stdout. Died or killed?
12	May 21, 2024 00:11	0	0	0	0	Error: No answer to stdout. Died or killed?
13	May 21, 2024 00:11	0	0	0	0	Error: expected "2195150984 ", got "0"
14	May 21, 2024 00:11	0	0	0	0	Error: No answer to stdout. Died or killed?
15	May 21, 2024 00:11	0	0	0	0	Error: No answer to stdout. Died or killed?
16	May 21, 2024 00:11	0	0	0	0	Error: No answer to stdout. Died or killed?
17	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
18	May 21, 2024 00:14	0	0	0	0	Error: No answer to stdout. Died or killed?
19	May 21, 2024 00:14	0	0	0	0	Error: No answer to stdout. Died or killed?
20	May 21, 2024 00:14	0	0	0	0	Error: No answer to stdout. Died or killed?
21	May 21, 2024 00:14	0	0	0	0	Error: No answer to stdout. Died or killed?
22	May 21, 2024 00:14	0	0	0	0	Error: No answer to stdout. Died or killed?
23	May 29, 2024 21:22	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
24	May 29, 2024 21:22	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
25	May 29, 2024 21:23	0	0	0	0	Error: expected "2239349366 ", got "0"	stderr
26	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
27	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
28	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
29	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
30	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
31	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
32	May 29, 2024 21:23	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
33	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
34	May 20, 2024 20:07	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
35	May 20, 2024 20:07	0	0	0	0	Error: expected "2241061484 ", got "0"	stderr
36	May 20, 2024 20:07	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
37	May 20, 2024 20:09	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
38	May 20, 2024 20:09	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
39	May 20, 2024 20:09	0	0	0	0	Error: expected "2226800167 ", got "0"	stderr
40	May 20, 2024 20:09	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
41	May 20, 2024 20:09	0	0	0	0	Error: expected "2202418143 ", got "0"	stderr
42	May 20, 2024 20:09	0	0	0	0	Error: expected "2196943233 ", got "0"	stderr
43	May 20, 2024 20:09	0	0	0	0	Error: expected "2223310972 ", got "0"	stderr
44	May 20, 2024 20:09	0	0	0	0	Error: expected "2247168756 ", got "0"	stderr
45	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
46	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
47	May 20, 2024 20:12	0	0	0	0	Error: expected "2222452146 ", got "0"
48	May 20, 2024 20:12	0	0	0	0	Error: No answer to stdout. Died or killed?
49	May 20, 2024 20:09	0	0	0	0	Error: No answer to stdout. Died or killed?	stderr
50	May 20, 2024 20:09	6,206	115,337,613	50,887,034	2,211,840
51	May 20, 2024 20:12	6,562	112,435,036	53,805,823	2,269,184
52	May 20, 2024 20:07	6,599	133,073,003	54,113,016	2,375,680
53	May 20, 2024 20:12	6,868	131,507,716	56,316,216	2,281,472
54	May 20, 2024 20:09	6,912	118,708,574	56,680,177	2,252,800
55	May 20, 2024 20:09	7,037	113,862,944	57,699,821	2,215,936
56	May 20, 2024 20:12	7,145	108,152,995	58,587,927	2,269,184
57	May 20, 2024 20:07	7,637	137,989,330	62,624,590	2,301,952
58	May 20, 2024 20:07	7,680	130,504,067	62,976,810	2,281,472
59	May 20, 2024 20:07	7,854	141,679,458	64,400,751	2,187,264
60	May 20, 2024 20:07	7,870	124,498,361	64,536,043	2,179,072
61	May 20, 2024 20:06	7,905	131,142,754	64,823,681	2,187,264
62	May 20, 2024 20:07	8,106	128,612,485	66,471,318	2,215,936
63	May 20, 2024 20:06	9,204	142,263,865	75,472,453	2,347,008
64	May 20, 2024 20:06	10,658	158,522,476	87,391,810	2,277,376

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